A Consensus Mechanism to Improve Prediction of Cortical Bone Properties using Ultrafast Ultrasound Acquisition

Journal article


Abdelreheem, H., Grisan, E., Dryburgh, P., Peralta, L. and Harput, S. (2024). A Consensus Mechanism to Improve Prediction of Cortical Bone Properties using Ultrafast Ultrasound Acquisition. IEEE Access. https://doi.org/10.1109/ACCESS.2024.3404644
AuthorsAbdelreheem, H., Grisan, E., Dryburgh, P., Peralta, L. and Harput, S.
Abstract

Human bone microarchitecture is complex and density-based bone assessment modalities cannot fully capture bone strength or health. Ultrasound can be used to assess bone microstructure, but it is hindered by the dense and acoustically diverse nature of cortical bone. This study proposes a methodology for predicting cortical bone thickness and porosity through a novel approach utilizing convolutional neural networks (CNNs), processing multi-frequency radiofrequency (RF) data obtained from ultrafast ultrasound, and implementing a consensus mechanism to enhance reliability. Received ultrasound RF signals are processed using a CNN with a mutual consensus mechanism, which is used to discard received RF data when measurement variation is over a certain threshold. The feasibility of the proposed method is demonstrated through realistic simulations and an ex vivo animal bone study using an ultrafast ultrasound scanner. The preliminary findings of this study demonstrate an enhancement in overall accuracy, with an increase from 92% to 95.6% for thickness and an increase from 73.4% to 88.4% for porosity classification, without and with consensus respectively. The implemented mutual consensus mechanism increases the accuracy of the thickness and porosity estimations both in silico and ex vivo. Ultrafast ultrasound scanners can capture thousands of RF signals within seconds, which results in availability of large datasets for implementation of artificial intelligence and machine learning algorithms. Here, we propose a new approach for ultrafast ultrasound data processing that values data quality over quantity by discarding noisy measurements using a consensus mechanism to improve the final estimation reliability.

KeywordsBones , Ultrasonic imaging , Cortical bone , Radio frequency , Ultrasonic variables measurement , Consensus protocol , Computed tomography , Convolutional neural networks , Biomedical imaging
Year2024
JournalIEEE Access
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
ISSN2169-3536
Digital Object Identifier (DOI)https://doi.org/10.1109/ACCESS.2024.3404644
Web address (URL)https://ieeexplore.ieee.org/document/10537175
Publication dates
Online23 May 2024
Publication process dates
Deposited04 Jun 2024
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Open
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Ali, S, Daul, C, Rittscher, J, Stoyanov, D and Grisan, E (2020). Preface to: EndoCV2020Computer Vision in Endoscopy. CEUR Workshop Proceedings. 2595.
An assay system to evaluate riboflavin/UV-A corneal phototherapy efficacy in a porcine corneal organ culture model
Perazzi, A, Gomiero, C, Corain, Livio, Iacopetti, Ilaria, Grisan, Enrico, Lombardo, Marco, Lombardo, Giuseppe, Salvalaio, Gianni, Contin, Roberta, Patruno, Marco, Martinello, Tiziana and Peruffo, Antonella (2020). An assay system to evaluate riboflavin/UV-A corneal phototherapy efficacy in a porcine corneal organ culture model. Animals. 10, pp. 1-16. https://doi.org/10.3390/ani10040730
An objective comparison of detection and segmentation algorithms for artefacts in clinical endoscopy
Ali, S., Zhou, F., Braden, B., Bailey, A., Yang, S., Cheng, G., Zhang, P., Li, X., Kayser, M., Soberanis-Mukul, R., Albarqouni, S., Wang, X., Wang, C., Watanabe, S., Oksuz, I., Ning, Q., Yang, S., Khan, M.A., Gao, X., Realdon, S., Loshchenov, M., Schnabel, J., East, J., Wagnieres, G., Loschenov, V., Grisan, E., Daul, C., Blondel, W. and Rittscher, J. (2020). An objective comparison of detection and segmentation algorithms for artefacts in clinical endoscopy. Scientific Reports. 10, p. 2748. https://doi.org/10.1038/s41598-020-59413-5
Photoacoustic Super-Resolution Imaging using Laser Activation of Low-Boiling-Point Dye-Coated Nanodroplets in vitro and in vivo
Zhang, G, Dunsby, C, Bamber, J, Tang, MX, Harput, S, Shah, A, Hernandez-Gil, J, Zhu, J, Christensen-Jeffries, K, Brown, J, Long, NJ and Eckersley, RJ (2019). Photoacoustic Super-Resolution Imaging using Laser Activation of Low-Boiling-Point Dye-Coated Nanodroplets in vitro and in vivo. 2019 IEEE International Ultrasonics Symposium (IUS). 06 - 09 Oct 2019 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2019.8926179
Minimization of Nanodroplet Activation Time using Focused-Pulses for Droplet-Based Ultrasound Super-Resolution Imaging
Zhang, G, Harput, S, Zhu, J, Christensen-Jeffries, K, Brown, J, Leow, CH, Dunsby, C, Eckersley, RJ and Tang, MX (2019). Minimization of Nanodroplet Activation Time using Focused-Pulses for Droplet-Based Ultrasound Super-Resolution Imaging. 2019 IEEE International Ultrasonics Symposium (IUS). 06 - 09 Oct 2019 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2019.8926067
Acoustic Wave Sparsely-Activated Localization Microscopy (AWSALM): In Vivo Fast Ultrasound Super-Resolution Imaging using Nanodroplets
Zhang, G, Weinberg, P, Dunsby, C, Tang, MX, Harput, S, Toulemonde, M, Broughton-Venner, J, Zhu, J, Riemer, K, Christensen-Jeffries, K, Brown, J and Eckersley, RJ (2019). Acoustic Wave Sparsely-Activated Localization Microscopy (AWSALM): In Vivo Fast Ultrasound Super-Resolution Imaging using Nanodroplets. 2019 IEEE International Ultrasonics Symposium (IUS). 06 - 09 Oct 2019 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2019.8926069
Activation and 3D Imaging of Phase-change Nanodroplet Contrast Agents with a 2D Ultrasound Probe
Harput, S, Zhang, G, Toulemonde, M, Zhu, J, Christensen-Jeffries, K, Brown, J, Eckersley, RJ, Dunsby, C and Tang, MX (2019). Activation and 3D Imaging of Phase-change Nanodroplet Contrast Agents with a 2D Ultrasound Probe. 2019 IEEE International Ultrasonics Symposium (IUS). 06 - 09 Oct 2019 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2019.8925892
In-vivo Barretts esophagus digital pathology stage classification through feature enhancement of confocal laser endomicroscopy
Ghatwary, N, Ahmed, A, Grisan, E, Jalab, H, Bidaut, L and Ye, X (2019). In-vivo Barretts esophagus digital pathology stage classification through feature enhancement of confocal laser endomicroscopy. J Med Imaging (Bellingham). 6 (1). https://doi.org/https://www.doi.org/10.1117/1.JMI.6.1.014502
Real-time diameter of the fetal aorta from ultrasound
Savioli, Nicolò, Grisan, Enrico, Visentin, Silvia, Cosmi, Erich, Montana, Giovanni and Lamata, Pablo (2019). Real-time diameter of the fetal aorta from ultrasound. Neural Computing and Applications. https://doi.org/10.1007/s00521-019-04646-3
Does Quantification of Carotid Plaque Surface Irregularities Better Detect Symptomatic Plaques Compared to the Subjective Classification?
Rafailidis, V., Chryssogonidis, I., Grisan, E., Xerras, C., Cheimariotis, G-A., Tegos, T., Rafailidis, D., Sidhu, P. and Charitanti-Kouridou, A. (2019). Does Quantification of Carotid Plaque Surface Irregularities Better Detect Symptomatic Plaques Compared to the Subjective Classification? Journal of Ultrasound in Medicine. 38 (12), pp. 3163-3171. https://doi.org/10.1002/jum.15017
An ultrasonographic multiparametric carotid plaque risk index associated with cerebrovascular symptomatology: A study comparing color Doppler imaging and contrast-enhanced ultrasonography
Rafailidis, V., Chryssogonidis, I., Xerras, C., Grisan, E., Cheimariotis, G-A., Tegos, T., Rafailidis, P.S., Sidhu, P.S. and Charitanti-Kouridou, A. (2019). An ultrasonographic multiparametric carotid plaque risk index associated with cerebrovascular symptomatology: A study comparing color Doppler imaging and contrast-enhanced ultrasonography. American Journal of Neuroradiology. 40 (6), pp. 1022-1028. https://doi.org/10.3174/ajnr.A6056
The motor cortex of the sheep: laminar organization, projections and diffusion tensor imaging of the intracranial pyramidal and extrapyramidal tracts
Peruffo, A., Corain, L., Bombardi, C., Centelleghe, C., Grisan, E., Graïc, J-M, Bontempi, P., Grandis, A. and Cozzi, B. (2019). The motor cortex of the sheep: laminar organization, projections and diffusion tensor imaging of the intracranial pyramidal and extrapyramidal tracts. Brain Structure and Function. 224 (5), pp. 1933-1946. https://doi.org/10.1007/s00429-019-01885-x
Building a reduced dictionary of relevant perfusion patterns from CEUS data for the classification of testis lesions
Favaron, T., Huang, D.Y., Christensen-Jeffries, K., Eckersley, R., Sidhu, P.S. and Grisan, E. (2019). Building a reduced dictionary of relevant perfusion patterns from CEUS data for the classification of testis lesions. 2019 IEEE 16th International Symposium on Biomedical Imaging. Venice, Italy 08 - 11 Apr 2019 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ISBI.2019.8759528
Deep Convolutional Neural Network for Survival Estimation of Amyotrophic Lateral Sclerosis patients
Grisan, E., Zandon`a, A. and Di Camillo, B. (2019). Deep Convolutional Neural Network for Survival Estimation of Amyotrophic Lateral Sclerosis patients. European Symposium on Artificial Neural Networks, Computational Intelligence and Machine Learning. Bruges, Belgium 24 - 26 Apr 2019 i6doc.
Prediction of Adverse Glycemic Events from Continuous Glucose Monitoring Signal
Gadaleta, M., Facchinetti, A., Grisan, E. and Rossi, M. (2019). Prediction of Adverse Glycemic Events from Continuous Glucose Monitoring Signal. IEEE Journal of Biomedical and Health Informatics. 23 (2). https://doi.org/10.1109/JBHI.2018.2823763
Sparse Image Reconstruction for Contrast Enhanced Cardiac Ultrasound using Diverging Waves
Stanziola, A., Toulemonde, M., Papadopoulou, V., Corbett, R., Duncan, N., Grisan, E. and Tang, M-X. (2019). Sparse Image Reconstruction for Contrast Enhanced Cardiac Ultrasound using Diverging Waves. IEEE International Ultrasonics Symposium 2019. Glasgow 09 2009 - 06 Oct 2019 Institute of Electrical and Electronics Engineers (IEEE).
Poisson Statistical Model of Ultrasound Super-Resolution Imaging Acquisition Time
Christensen-Jeffries, K., Brown, J., Harput, S., Zhang, G., Zhu, J., Tang, M-X., Dunsby, C. and Eckersley, R.J. (2019). Poisson Statistical Model of Ultrasound Super-Resolution Imaging Acquisition Time. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. https://doi.org/10.1109/tuffc.2019.2916603
High frame rate contrast enhanced ultrasound imaging for slow flow: influence of ultrasound pressure and flow rate on bubble disruption and image persistence
Zhu, J., Lin, S., Leow, C.H., Rowland, E.M., Riemer, K., Harput, S., Weinberg, P.D. and Tang, M-X. (2019). High frame rate contrast enhanced ultrasound imaging for slow flow: influence of ultrasound pressure and flow rate on bubble disruption and image persistence. Ultrasound in Medicine and Biology. 45 (9), pp. 2456-2470. https://doi.org/10.1016/j.ultrasmedbio.2019.05.016
Super resolution ultrasound image filtering with machine learning to reduce the localization error
Harput, S., Fong, L.H., Stanziola, A., Zhang, G., Toulemonde, M., Zhou, J., Christensen-Jeffries, K., Brown, J., Eckersley, R., Grisan, E., Dunsby, C. and Tang, M. (2019). Super resolution ultrasound image filtering with machine learning to reduce the localization error. IEEE International Ultrasonics Symposium 2019. Glasgow 09 2009 - 06 Oct 2019 Institute of Electrical and Electronics Engineers (IEEE).
High frame rate tri-plane echocardiography with spiral arrays: from simulation to real-time implementation
Ramalli, A., Harput, S., Bizy, S., Boni, E., Eckersley, R.J., Tortoli, P. and D'hooge, J. (2019). High frame rate tri-plane echocardiography with spiral arrays: from simulation to real-time implementation. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 67 (1). https://doi.org/10.1109/TUFFC.2019.2940289
3-D Super-Resolution Ultrasound Imaging with a 2-D Sparse Array
Harput, S., Christensen-Jeffries, K., Ramalli, A., Brown, J., Zhu, J., Zhang, G., Leow, C-H., Toulemonde, M., Boni, E., Tortoli, P., Eckersley, R.J., Dunsby, C. and Tang, M-X. (2019). 3-D Super-Resolution Ultrasound Imaging with a 2-D Sparse Array. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 67 (2), pp. 269-277. https://doi.org/10.1109/TUFFC.2019.2943646
3D Super-Resolution US Imaging of Rabbit Lymph Node Vasculature in Vivo by Using Microbubbles
Zhu, J., Rowland, E.M., Harput, S., Riemer, K., Leow, C.H., Clark, B., Lim, A., Christensen-Jeffries K, Zhang, G., Brown, J., Dunsby, C., Eckerslet, R.J., Weinberg, P.D. and Tang, M.X (2019). 3D Super-Resolution US Imaging of Rabbit Lymph Node Vasculature in Vivo by Using Microbubbles. Radiology. 291 (3), pp. 642-650. https://doi.org/10.1148/radiol.2019182593
Investigation of Microbubble Detection Methods for Super-Resolution Imaging of Microvasculature
Brown, J., Christensen-Jeffries, K., Harput, S., Zhang, G., Zhu, J., Dunsby, C., Tang, M-X. and Eckersley, R.J. (2019). Investigation of Microbubble Detection Methods for Super-Resolution Imaging of Microvasculature. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 66 (4), pp. 676-691. https://doi.org/10.1109/TUFFC.2019.2894755
Fast acoustic wave sparsely activated localization microscopy (fast-AWSALM): ultrasound super-resolution using plane-wave activation of nanodroplets
Zhang, G., Harput, S., Hu, H., Christensen-Jeffries, K., Zhu, J., Brown, J., Leow, C.H., Eckersley, R., Dunsby, R. and Tang, M-X. (2019). Fast acoustic wave sparsely activated localization microscopy (fast-AWSALM): ultrasound super-resolution using plane-wave activation of nanodroplets. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 66 (6), pp. 1039-1046. https://doi.org/10.1109/TUFFC.2019.2906496
Temporal Convolution Networks for Real-Time Abdominal Fetal Aorta Analysis with Ultrasound
Savioli, N., Visentin, S., Cosmi, E., Grisan, E., Lamata, P. and Montana, G. (2018). Temporal Convolution Networks for Real-Time Abdominal Fetal Aorta Analysis with Ultrasound. Artificial Neural Networks and Machine Learning – ICANN 2018. Rhodes, Greece 04 - 07 Oct 2018 Springer. https://doi.org/10.1007/978-3-030-01421-6_15
3D Ultrasound Image Guidance and Therapy Through the Rib Cage with a Therapeutic Random Phased Array
Zubair, M., Harput, S. and Dickinson, R. J. (2018). 3D Ultrasound Image Guidance and Therapy Through the Rib Cage with a Therapeutic Random Phased Array. 2018 IEEE International Ultrasonics Symposium (IUS). Kobe, Japan 22 - 25 Oct 2018 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2018.8579835
New Denoising Unsharp Masking Method for Improved Intima Media Thickness Measurements with Active Contour Segmentation
Moubark, A.M., Cowell, D.M.J., Harput, S. and Freear, S. (2018). New Denoising Unsharp Masking Method for Improved Intima Media Thickness Measurements with Active Contour Segmentation. 2018 IEEE International Ultrasonics Symposium (IUS). Kobe, Japan 22 - 25 Oct 2018 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2018.8579733
Fast Acoustic Wave Sparsely Activated Localization Microscopy (Fast-AWSALM) Using Octafluoropropane N Anodroplets
Zhang, G., Harput, S., Hu, H., Christensen-Jeffries K, Zhu, J., Brown, J., Leow, C.H., Dunsby, C., Eckersley, R.J. and Tang, M.X. (2018). Fast Acoustic Wave Sparsely Activated Localization Microscopy (Fast-AWSALM) Using Octafluoropropane N Anodroplets. 2018 IEEE International Ultrasonics Symposium (IUS). Kobe, Japan 22 - 25 Oct 2018 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2018.8580192
Development of Simultaneous Optical Imaging and Super-Resolution Ultrasound to Improve Microbubble Localization Accuracy
Harput, S. (2018). Development of Simultaneous Optical Imaging and Super-Resolution Ultrasound to Improve Microbubble Localization Accuracy. 2018 IEEE International Ultrasonics Symposium (IUS). Kobe, Japan 22 - 25 Oct 2018 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2018.8580212
3D in Vitro Ultrasound Super-Resolution Imaging Using a Clinical System
Christensen-Jeffries, K, Harput, S., Brown, J., Zhang, G., Zhu, J., Tang, M.X., Dunsby, C. and Eckersley, R. (2018). 3D in Vitro Ultrasound Super-Resolution Imaging Using a Clinical System. 2018 IEEE International Ultrasonics Symposium (IUS). Kobe, Japan 22 - 25 Oct 2018 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2018.8580144
Combining Acoustic Trapping with Plane Wave Imaging for Localized Microbubble Accumulation in Large Vessels
Nie, L., Harput, S., Cowell, D.M.J., Carpenter, T.M., Mclaughlan, J.R. and Freear, S. (2018). Combining Acoustic Trapping with Plane Wave Imaging for Localized Microbubble Accumulation in Large Vessels. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 65 (7), pp. 1193-1204. https://doi.org/10.1109/TUFFC.2018.2838332
Acoustic wave sparsely-activated localization microscopy (AWSALM): super-resolution ultrasound imaging using acoustic activation and deactivation of nanodroplets
Zhang, G., Harput, S., Lin, S., Christensen-Jeffries, K, Leow, C.H., Brown, J., Dunsby, C., Eckersley, R. and Tang, M. (2018). Acoustic wave sparsely-activated localization microscopy (AWSALM): super-resolution ultrasound imaging using acoustic activation and deactivation of nanodroplets. Applied Physics Letters. 113.
Two-stage motion correction for super-resolution ultrasound imaging in human lower limb
Harput, S., Christensen-Jeffries, K., Brown, J., Yuanwei, L., Williams, K.J., Davies, A.H., Eckersley, R., Dunsby, C.W. and Tang, M. (2018). Two-stage motion correction for super-resolution ultrasound imaging in human lower limb. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 65 (5), pp. 803-814. https://doi.org/10.1109/TUFFC.2018.2824846
3-D super-resolution ultrasound (SR-US) imaging using a 2-D sparse array with high volumetric imaging rate
Harput, S., Christensen-Jeffries, K., Brown, J., Zhu, J., Zhang, G., Leow, C.H., Toulemonde, M., Ramalli, A., Boni, E., Tortoli, P., Eckersley, R.J., Dunsby, C. and Tang, M. (2018). 3-D super-resolution ultrasound (SR-US) imaging using a 2-D sparse array with high volumetric imaging rate. 2018 IEEE International Ultrasonics Symposium (IUS). Kobe, Japan 22 - 25 Oct 2018 Institute of Electrical and Electronics Engineers (IEEE).
3-D motion correction for volumetric super-resolution ultrasound (SR-US) imaging
Harput, S., Christensen-Jeffries, K, Brown, J., Zhu, J., Zhang, G., Eckersley, R.J., Dunsby C. and Tang, M. (2018). 3-D motion correction for volumetric super-resolution ultrasound (SR-US) imaging. 2018 IEEE International Ultrasonics Symposium (IUS). Kobe, Japan 22 - 25 Oct 2018 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2018.8580145
Quantitative imaging by pixel-based contrast-enhanced ultrasound reveals a linear relationship between synovial vascular perfusion and the recruitment of pathogenic IL-17A-F+IL-23+ CD161+ CD4+ T helper cells in psoriatic arthritis joints
Fiocco, U, Stramare, R, Martini, V, Coran, A, Caso, F, Costa, L, Felicetti, M, Rizzo, G, Tonietto, M, Scanu, A, Oliviero, F, Raffeiner, B, Vezzù, M, Lunardi, F, Scarpa, R, Sacerdoti, D, Rubaltelli, L, Punzi, L, Doria, A and Grisan, E (2017). Quantitative imaging by pixel-based contrast-enhanced ultrasound reveals a linear relationship between synovial vascular perfusion and the recruitment of pathogenic IL-17A-F+IL-23+ CD161+ CD4+ T helper cells in psoriatic arthritis joints. Clinical Rheumatology. 36 (2), pp. 391-399. https://doi.org/10.1007/s10067-016-3500-x
New improved unsharp masking methods compatible with ultrasound B-mode imaging
Moubark, AM, Carpenter, TM, Cowell, DMJ, Harput, S and Freear, S (2017). New improved unsharp masking methods compatible with ultrasound B-mode imaging. 2017 IEEE International Ultrasonics Symposium (IUS). 06 - 09 Sep 2017 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2017.8092244
High frame rate contrast enhanced ultrasound imaging of lymphatic vessel phantom
Zhu, J, Lin, S, Harput, S, Toulemonde, M, Leow, CH and Tang, MX (2017). High frame rate contrast enhanced ultrasound imaging of lymphatic vessel phantom. 2017 IEEE International Ultrasonics Symposium (IUS). 06 - 09 Sep 2017 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2017.8092326
Boosting the Battery Life of Wearables for Health Monitoring Through the Compression of Biosignals
Hooshmand, M, Zordan, D, Del Testa, D, Grisan, E and Rossi, M (2017). Boosting the Battery Life of Wearables for Health Monitoring Through the Compression of Biosignals. IEEE Internet of Things Journal. 4, pp. 1647-1662. https://doi.org/10.1109/JIOT.2017.2689164
Detection of a slow-flow component in contrast-enhanced ultrasound of the synovia for the differential diagnosis of arthritis
Rizzo, G, Tonietto, M, Castellaro, M, Raffeiner, B, Coran, A, Fiocco, U, Stramare, R and Grisan, E (2017). Detection of a slow-flow component in contrast-enhanced ultrasound of the synovia for the differential diagnosis of arthritis. SPIE Medical Imaging. Orlando, FL, USA 11 - 16 Feb 2017 SPIE. https://doi.org/10.1117/12.2250818
Improving the quantification of contrast enhanced ultrasound using a Bayesian approach
Rizzo, G, Tonietto, M, Castellaro, M, Raffeiner, B, Coran, A, Fiocco, U, Stramare, R and Grisan, E (2017). Improving the quantification of contrast enhanced ultrasound using a Bayesian approach. SPIE Medical Imaging. Orlando, FL , USA 16 2016 - 11 Feb 2017 SPIE. https://doi.org/10.1117/12.2250195
Superpixel-based classification of gastric chromoendoscopy images
Boschetto, D and Grisan, E (2017). Superpixel-based classification of gastric chromoendoscopy images. SPIE Medical Imaging. Orlando, FL, USA 11 - 16 Feb 2017 SPIE. https://doi.org/10.1117/12.2254187
Boosted learned kernels for data-driven vesselness measure
Grisan, E (2017). Boosted learned kernels for data-driven vesselness measure. Proceedings Volume 10137, Medical Imaging 2017: Biomedical Applications in Molecular, Structural, and Functional Imaging; 101370Z (2017). Orlando, FL, USA 11 - 16 Feb 2017 SPIE. https://doi.org/10.1117/12.2250370
Cortical Thickness variability in Multiple Sclerosis: The role of lesion segmentation and filling
Palombit, A, Castellaro, M, Calabrese, M, Romualdi, C, Pizzini, FB, Montemezzi, S, Grisan, E and Bertoldo, A (2017). Cortical Thickness variability in Multiple Sclerosis: The role of lesion segmentation and filling. 2017 IEEE 14th International Symposium on Biomedical Imaging (ISBI 2017). Melbourne, VIC, Australia 18 - 21 Apr 2017 pp. 792-795 https://doi.org/10.1109/ISBI.2017.7950637
From macro to nano: Linking quantitative CEUS perfusion parameters to CD4+ T cells subtypes in spondyloarthtitis
Grisan, E, Rizzo, G, Tonietto, M, Coran, A, Raffeiner, B, Scanu, A, Martini, V, Stramare, R and Fiocco, U (2017). From macro to nano: Linking quantitative CEUS perfusion parameters to CD4+ T cells subtypes in spondyloarthtitis. 2017 IEEE 14th International Symposium on Biomedical Imaging (ISBI 2017). Melbourne, VIC, Australia 17 - 21 Apr 2017 Institute of Electrical and Electronics Engineers (IEEE). pp. 899-902 https://doi.org/10.1109/ISBI.2017.7950661
Grade and location of power doppler are predictive of damage progression in rheumatoid arthritis patients in clinical remission by anti-tumour necrosis factor α
Raffeiner, B, Grisan, E, Botsios, C, Stramare, R, Rizzo, G, Bernardi, L, Punzi, L, Ometto, F and Doria, A (2017). Grade and location of power doppler are predictive of damage progression in rheumatoid arthritis patients in clinical remission by anti-tumour necrosis factor α. Rheumatology (United Kingdom). 56, pp. 1320-1325. https://doi.org/10.1093/rheumatology/kex084
Bayesian Quantification of Contrast-Enhanced Ultrasound Images with Adaptive Inclusion of an Irreversible Component
Rizzo, G, Tonietto, M, Castellaro, M, Raffeiner, B, Coran, A, Fiocco, U, Stramare, R and Grisan, E (2017). Bayesian Quantification of Contrast-Enhanced Ultrasound Images with Adaptive Inclusion of an Irreversible Component. IEEE Transactions on Medical Imaging. 36, pp. 1027-1036. https://doi.org/10.1109/TMI.2016.2637698
Tcf7l2 plays pleiotropic roles in the control of glucose homeostasis, pancreas morphology, vascularization and regeneration
Facchinello, N, Tarifeño-Saldivia, E, Grisan, E, Schiavone, M, Peron, M, Mongera, A, Ek, O, Schmitner, N, Meyer, D, Peers, B, Tiso, N and Argenton, F (2017). Tcf7l2 plays pleiotropic roles in the control of glucose homeostasis, pancreas morphology, vascularization and regeneration. Scientific Reports. 7. https://doi.org/10.1038/s41598-017-09867-x
Growth abnormalities of fetuses and infants
Cosmi, E, Grisan, E, Fanos, V, Rizzo, G, Sivanandam, S and Visentin, S (2017). Growth abnormalities of fetuses and infants. BioMed Research International. 2017. https://doi.org/https://www.doi.org/10.1155/2017/3191308
A possible new approach in the prediction of late gestational hypertension: The role of the fetal aortic intima-media thickness
Visentin, S, Londero, AP, Camerin, M, Grisan, E and Cosmi, E (2017). A possible new approach in the prediction of late gestational hypertension: The role of the fetal aortic intima-media thickness. Medicine (United States). 96. https://doi.org/https://www.doi.org/10.1097/MD.0000000000005515
A phase velocity filter for the measurement of lamb wave dispersion
Adams, C., Harput, S., Cowell, D. and Freear, S. (2017). A phase velocity filter for the measurement of lamb wave dispersion. 2016 IEEE International Ultrasonics Symposium (IUS). Tours, France 18 - 21 Sep 2016 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2016.7728797
The dynamic excitation of a granular chain: Contact mechanics finite element analysis and experimental validation
Gélat, P, Yang, J., Akanji, O., Thomas, P.J., Hutchins, D., Harput, S., Freear, S. and Saffari, N. (2017). The dynamic excitation of a granular chain: Contact mechanics finite element analysis and experimental validation. The Journal of the Acoustical Society of America. https://doi.org/10.1121/1.4983466
Acoustic microbubble trapping in blood mimicking fluid
Nie, L., Harput, S., McLaughlan, J.R., Cowell, D.M.J., Carpenter, T. and Freear, S. (2017). Acoustic microbubble trapping in blood mimicking fluid. 2017 IEEE International Ultrasonics Symposium (IUS). Washington, DC, USA 06 - 09 Sep 2019 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2017.8092590
Elevation resolution enhancement in 3D photoacoustic imaging using FDMAS beamforming
Alshaya, A., Harput, S., Cowell, D.M.J., Carpenter, T., McLaughlan, J. and Freear, S. (2017). Elevation resolution enhancement in 3D photoacoustic imaging using FDMAS beamforming. 2017 IEEE International Ultrasonics Symposium (IUS). Washington, DC, USA 06 - 09 Sep 2019 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2017.8092412
Microbubble Axial Localization Errors in Ultrasound Super-Resolution Imaging
Christensen-Jeffries, K, Harput, S., Brown, J., Wells, P.N.T., Aljabar, P., Dunsby, C.W., Tang, M. and Eckersley, R.J. (2017). Microbubble Axial Localization Errors in Ultrasound Super-Resolution Imaging. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 64 (11), p. 2017. https://doi.org/10.1109/TUFFC.2017.2741067
Generation of ultrasound pulses in water using granular chains with a finite matching layer
Harput, S., McLaughlan, J., Cowell, D.M.J., Gelat, P., Saffari, N., Yang, J., Akanji, O., Thomas, P.J, Hutchins, D.A. and Freear, S. (2017). Generation of ultrasound pulses in water using granular chains with a finite matching layer. Physical Review Applied. 8 (054032). https://doi.org/10.1103/PhysRevApplied.8.054032
Two Stage Sub-Wavelength Motion Correction in Human Microvasculature for CEUS Imaging
Harput, S., Christensen-Jeffries, K., Li, Y., Brown, J., Eckersley, R.J., Dunsby, C. and Tang, M-X. (2017). Two Stage Sub-Wavelength Motion Correction in Human Microvasculature for CEUS Imaging. 2017 IEEE International Ultrasonics Symposium (IUS). Washington, DC, USA 06 - 09 Sep 2019 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2017.8091703
Ultrasound Super-Resolution with Microbubble Contrast Agents
Harput, S., Christensen-Jeffries, K, Brown, J., Eckersley, R.J., Dunsby, C. and Tan, M-X. (2017). Ultrasound Super-Resolution with Microbubble Contrast Agents. IEEE SENSORS. Glasgow, UK 29 Oct - 01 Nov 2017 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ICSENS.2017.8234244
Localisation of Multiple Non-Isolated Microbubbles with Frequency Decomposition in Super-Resolution Imaging
Harput, S., Christensen-Jeffries, K., Brown, J., Eckersley, R.J., Dunsby, C. and Tang, M-X. (2017). Localisation of Multiple Non-Isolated Microbubbles with Frequency Decomposition in Super-Resolution Imaging. 2017 IEEE International Ultrasonics Symposium (IUS). Washington, DC, USA 06 - 09 Sep 2019 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2017.8091553
Automatic classification of small bowel mucosa alterations in celiac disease for confocal laser endomicroscopy
Boschetto, D, Di Claudio, G, Mirzaei, H, Leong, R and Grisan, E (2016). Automatic classification of small bowel mucosa alterations in celiac disease for confocal laser endomicroscopy. Medical Imaging 2016: Biomedical Applications in Molecular, Structural, and Functional Imaging. San Diego, United States 27 Feb - 03 Mar 2016 SPIE. https://doi.org/10.1117/12.2217183
Automatic classification of endoscopic images for premalignant conditions of the esophagus
Boschetto, D, Gambaretto, G and Grisan, E (2016). Automatic classification of endoscopic images for premalignant conditions of the esophagus. Medical Imaging 2016: Biomedical Applications in Molecular, Structural, and Functional Imaging. San Diego, United States 27 Feb - 03 Mar 2016 https://doi.org/10.1117/12.2216826
Superpixel-based automatic segmentation of villi in confocal endomicroscopy
Boschetto, D, Mirzaei, H, Leong, RWL and Grisan, E (2016). Superpixel-based automatic segmentation of villi in confocal endomicroscopy. 2016 IEEE-EMBS International Conference on Biomedical and Health Informatics (BHI). Las Vegas, NV, USA 24 - 27 Feb 2016 pp. 168-171 https://doi.org/10.1109/BHI.2016.7455861
Analysis of solitary wave impulses in granular chains using ultrasonic excitation
Yang, J., Hutchins, D.A., Akanji, O., Thomas, P.J., Davis, L.A.J., Harput, S., Gelat, P., Freear, S. and Saffari, N. (2016). Analysis of solitary wave impulses in granular chains using ultrasonic excitation. Physical Review E - Statistical, Nonlinear, and Soft Matter Physics. 93 (063001). https://doi.org/10.1103/PhysRevE.93.063002
Performance of Switched Mode Arbitrary Excitation using Harmonic Reduction Pulse Width Modulation (HRPWM) in Array Imaging Applications
Cowell, D.M.J., Carpenter, T., Smith, P., Adams, C., Harput, S. and Freear, S. (2016). Performance of Switched Mode Arbitrary Excitation using Harmonic Reduction Pulse Width Modulation (HRPWM) in Array Imaging Applications. 2016 IEEE International Ultrasonics Symposium (IUS). Tours, France 18 - 21 Sep 2016 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2016.7728816
The dynamic excitation of a granular chain for biomedical ultrasound applications: contact mechanics finite element analysis and validation
Gelat, P., Yang, J., Thomas, P.J., Hutchins, D.A., Akanji, O., Davis, L.A.J., Freear, S., Harput, S. and Saffari, N. (2016). The dynamic excitation of a granular chain for biomedical ultrasound applications: contact mechanics finite element analysis and validation. Journal of Physics: Conference Series. 684 (1). https://doi.org/10.1088/1742-6596/684/1/012005
Characterisation of Liposome-Loaded Microbubble Populations for Subharmonic Imaging
McLaughlan, J.R., Harput, S., Abou-Saleh, R.H., Payman, S.A., Evans, S. and Freear, S. (2016). Characterisation of Liposome-Loaded Microbubble Populations for Subharmonic Imaging. Ultrasound in Medicine and Biology. 43 (1), pp. 346-356. https://doi.org/10.1016/j.ultrasmedbio.2016.09.011
Velocity estimation error reduction in stenosis areas using a correlation correction method
Nie, L., Harput, S., Cowell, D.M.J. and Freear, S. (2016). Velocity estimation error reduction in stenosis areas using a correlation correction method. 2016 IEEE International Ultrasonics Symposium (IUS). Tours, France 18 - 21 Sep 2016 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2016.7728627
Clutter noise reduction in B-Mode image through mapping and clustering signal energy for better cyst classification
Moubark, A.M., Harput, S., Cowell, D.M.J. and Freear, S. (2016). Clutter noise reduction in B-Mode image through mapping and clustering signal energy for better cyst classification. 2016 IEEE International Ultrasonics Symposium (IUS). Tours, France 18 - 21 Sep 2016 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2016.7728860
Plane wave imaging challenge
Moubark, A.M., Harput, S. and Cowell, D.M.J. (2016). Plane wave imaging challenge. 2016 IEEE International Ultrasonics Symposium (IUS). Tours, France 18 - 21 Sep 2016 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2016.7728893
Enhancement of contrast and resolution of B-mode plane wave imaging (PWI) with non-linear filtered delay multiply and sum (FDMAS) beamforming
Moubark, A.M., Alomari, Z., Harput, S., Cowell, D.M.J. and Freear, S. (2016). Enhancement of contrast and resolution of B-mode plane wave imaging (PWI) with non-linear filtered delay multiply and sum (FDMAS) beamforming. 2016 IEEE International Ultrasonics Symposium (IUS). Tours, France 18 - 21 Sep 2016 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2016.7728536
Improved shear wave-front reconstruction method by aligning imaging beam angles with shear-wave polarization: Applied for shear compounding application
Hyder, S., Harput, S., Alomari, Z., Cowell, D.M.J., McLaughlan, J. and Freear, S. (2016). Improved shear wave-front reconstruction method by aligning imaging beam angles with shear-wave polarization: Applied for shear compounding application. 2016 IEEE International Ultrasonics Symposium (IUS). Tours, France 18 - 21 Sep 2016 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2016.7728536
Simultaneous trapping and imaging of microbubbles at clinically relevant flow rates
Harput, S., Nie, L., Cowell, D.M.J., Carpenter, T., Raiton, B., McLaughlan, J. and Freear, S. (2016). Simultaneous trapping and imaging of microbubbles at clinically relevant flow rates. 2016 IEEE International Ultrasonics Symposium (IUS). Tours, France 18 - 21 Sep 2016 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2016.7728393
Coupling of wideband impulses generated by granular chains into liquids for biomedical applications
Harput, S., Freear, S., Gelat, P., Saffari, N., Yang, J., Akanji, O., Thomas, P.J. and Hutchins, D.A. (2016). Coupling of wideband impulses generated by granular chains into liquids for biomedical applications. 2016 IEEE International Ultrasonics Symposium (IUS). Tours, France 18 - 21 Sep 2016 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2016.7728481
Spatial Resolution and Contrast Enhancement in Photoacoustic Imaging with Filter Delay Multiply and Sum Beamforming Technique
Alshaya, A., Harput, S., Moubark, A.M., Cowell, D.M.J., McLaughlan, J. and Freear, S. (2016). Spatial Resolution and Contrast Enhancement in Photoacoustic Imaging with Filter Delay Multiply and Sum Beamforming Technique. 2016 IEEE International Ultrasonics Symposium (IUS). Tours, France 18 - 21 Sep 2016 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2016.7728682
Specimen-agnostic guided wave inspection using recursive feedback
Adams, C., Harput, S., Cowell, D., Freear, S. and Charutz, D.M. (2016). Specimen-agnostic guided wave inspection using recursive feedback. 2016 IEEE International Ultrasonics Symposium (IUS). Tours, France 18 - 21 Sep 2016 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ULTSYM.2016.7728811
The Effect of Boundary Conditions on Resonant Ultrasonic Spherical Chains
Akanji, O, Yang, J., Hutchins, D., Thomas, P.J., Davis, L.A.J., Harput, S., Freear, S., Gelat, P.N. and Saffari, N. (2016). The Effect of Boundary Conditions on Resonant Ultrasonic Spherical Chains. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 63 (11), pp. 1957-1966. https://doi.org/10.1109/TUFFC.2016.2576563
An adaptive array excitation scheme for the unidirectional enhancement of guided waves
Adams, C., Harput, S., Cowell, D., Carpenter, T.M., Charutz, D.M. and Freear, S. (2016). An adaptive array excitation scheme for the unidirectional enhancement of guided waves. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 64 (2), pp. 441-451. https://doi.org/10.1109/TUFFC.2016.2628100
Quantification of kidneys from 3D ultrasound in pediatric hydronephrosis
Cerrolaza, J.J., Grisan, E., Safdar, N., Myers, E., Jago, J., Peters, C.A. and Linguraru, M.G. (2015). Quantification of kidneys from 3D ultrasound in pediatric hydronephrosis. Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/embc.2015.7318324
Contrast-enhanced ultrasound imaging with chirps: Signal processing and pulse compression
Harput, S., McLaughlan, J., Cowell, D. and Freear, S. (2015). Contrast-enhanced ultrasound imaging with chirps: Signal processing and pulse compression. 2015 IEEE International Ultrasonics Symposium (IUS). Taipei, Taiwan 21 Oct - 24 Nov 2015 https://doi.org/10.1109/ULTSYM.2015.0160
Ultrasonic propagation in finite-length granular chains
Hutchins, D.A., Yang, J., Akanji, O., Thomas, P.J., Davis, L.A.J., Freear, S., Harput, S., Saffari, N. and Gelat, P. (2015). Ultrasonic propagation in finite-length granular chains. Ultrasonics. 69, pp. 215-223. https://doi.org/10.1016/j.ultras.2015.10.018
Superharmonic imaging with chirp coded excitation: filtering spectrally overlapped harmonics
Harput, S., McLaughlan, J. and Cowell, D. M. J. (2014). Superharmonic imaging with chirp coded excitation: filtering spectrally overlapped harmonics. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 61 (11), pp. 1802-1814. https://doi.org/10.1109/TUFFC.2014.006424
Ultrasonic Phased Array Device for Acoustic Imaging in Air
Harput, S. and Bozkurt, A. (2008). Ultrasonic Phased Array Device for Acoustic Imaging in Air. IEEE Sensors Journal. 8 (11), pp. 1755 - 1762. https://doi.org/10.1109/JSEN.2008.2004574