Dr. Bhavik N. Patel Profile

Dr. Bhavik N. Patel

at Mayo Clinic

SPIE Involvement:

Author

Publications (9)

SPIE Journal Paper | 9 November 2024

Self-supervised learning for chest computed tomography: training strategies and effect on downstream applications

Amara Tariq, Gokul Ramasamy, Bhavik Patel, Imon Banerjee

JMI, Vol. 11, Issue 06, 064003, (November 2024) https://doi.org/10.1117/12.10.1117/1.JMI.11.6.064003

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Proceedings Article | 3 April 2024 Poster + Paper

Comparative analysis of multiphase CT volumetric kidney segmentation: fine-tuning to domain adaptation

Ramon Correa-Medero, Sam Fathizadeh, Fatima Al Khafaji, Haidar Abdul-Muhsin, Bhavik Patel, Imon Banerjee

Proceedings Volume 12927, 129273A (2024) https://doi.org/10.1117/12.3003574

KEYWORDS: Kidney, Image segmentation, Computed tomography

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Development of kidney segmentation models has largely focused on using contrast-enhanced CT exams. The KiTS segmentation challenge, in particular, has provided a benchmark using 300 annotated arterial phase CT scans. Review of the best performing models identifies 3D Unet models with residual connections as the best performing models for kidney segmentation. Li et al. found a U-net architecture with residual connections to provide the best performance for their segmentation task. Their work focused on segmenting kidney parenchyma alongside kidney stones using a dataset of 257 studies that was recently made available. Yu et al. investigated the ability to train a multi-organ nn-Unet model using simultaneous contrast and non-contrast images. The authors found the model to achieve high dice scores for kidney segmentation with average dice scores of 0.96.4 Inspection of output segmentation found the model to underperform for non-contrast images as measured by smaller quality assessment scores. Tang et al. took a similar approach where early and late arterial phase scans were used to train a patch-based network to segment renal structures. The group found the model to perform adequately on test data, with no distinction between late and early arterial phase performance. Lee et al. attempted to reduce the dependency of labeling multiple phases by using paired samples where only the contrast-enhanced volume was annotated. They were able to outperform existing models but were limited by the need for correct anatomical correspondence between scans. Ananda et al. removed the dependency for paired samples by training a dual discriminator-based network where the model is trained in three phases. One phase ensures the consistency of segmentation of contrast phase images; the following two phases ensure the image encoding and output maps are not significantly different from contrast and non-contrast images. Dinsdale et al. implemented a similar multi-step approach to improve segmentation quality by improving resiliency to agerelated physiological changes in Brain MRI, where cross entropy(CE) loss is utilized for training a discriminator on the patient’s age using features from the bottleneck and segmentation map. In contrast, the final phase uses a confusion loss, penalizing the model for having greater confidence for a particular age.8 Despite all the modeling effort, the application of evaluating patients with impaired kidney function is challenging since variation occurs not only due to phase of contrast but also the level of renal function, and thus the consistency of imaging appearance is not guaranteed. Establishing the need for techniques that would improve the robustness of kidney segmentation models. Within the scope of this work, we proposed various techniques to generate models resilient to different contrast phases and externally validated the models.

Proceedings Article | 2 April 2024 Poster + Paper

A study of relationship between social determinant of health and imaging based age estimation using head CT

Amara Tariq, Bhavik Patel, Imon Banerjee

Proceedings Volume 12926, 129262G (2024) https://doi.org/10.1117/12.3006496

KEYWORDS: Biological research, Biological imaging, Head, Computed tomography, Image processing, Education and training, X-ray computed tomography, Statistical analysis, Performance modeling, Neuroimaging

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Proceedings Article | 2 April 2024 Presentation + Paper

Design, training, and applications of foundation model for chest computed tomography volumes

Amara Tariq, Bhavik Patel, Imon Banerjee

Proceedings Volume 12926, 1292611 (2024) https://doi.org/10.1117/12.3003042

KEYWORDS: Data modeling, Education and training, Lung, Chest, Visual process modeling, Computed tomography, Image segmentation, Performance modeling, Image processing

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SPIE Journal Paper | 12 October 2023

Challenges and solutions of echocardiography generalization for deep learning: a study in patients with constrictive pericarditis

Jiwoong Jeong, Chieh-Ju Chao, Reza Arsanjani, Kihong Kim, Melissa Pelkey, Yi-Chieh Chen, Raheel Ramzan, Mohammad Elbahnasawy, Mohamed Sleem, Chadi Ayoub, Juan Maria Farina, Martha Grogan, Garvan Kane, Bhavik Patel, Jae Oh, Imon Banerjee

JMI, Vol. 10, Issue 05, 054502, (October 2023) https://doi.org/10.1117/12.10.1117/1.JMI.10.5.054502

KEYWORDS: Data modeling, Education and training, RGB color model, Echocardiography, Performance modeling, Deep learning, Motion models, Ablation, 3D modeling, Image classification

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Proceedings Article | 10 April 2023 Presentation + Paper

A robust two-step adversarial debiasing with partial learning: medical image case-studies

Ramon Correa, Jiwoong Jason Jeong, Bhavik Patel, Hari Trivedi, Judy Gichoya, Imon Banerjee

Proceedings Volume 12469, 1246908 (2023) https://doi.org/10.1117/12.2647285

KEYWORDS: Artificial intelligence, Mammography, Breast density, Chest imaging

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SPIE Journal Paper | 23 June 2022

GAN augmentation for multiclass image classification using hemorrhage detection as a case-study

Jiwoong Jeong, Bhavik Patel, Imon Banerjee

JMI, Vol. 9, Issue 03, 035504, (June 2022) https://doi.org/10.1117/12.10.1117/1.JMI.9.3.035504

KEYWORDS: Gallium nitride, Data modeling, Image classification, Computed tomography, Brain, Tissues, Binary data, Performance modeling, Neuroimaging, Medical imaging

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SPIE Journal Paper | 7 September 2021

Quantitative image features from radiomic biopsy differentiate oncocytoma from chromophobe renal cell carcinoma

Akshay Jaggi, Domenico Mastrodicasa, Gregory Charville, R. Brooke Jeffrey, Sandy Napel, Bhavik Patel

JMI, Vol. 8, Issue 05, 054501, (September 2021) https://doi.org/10.1117/12.10.1117/1.JMI.8.5.054501

KEYWORDS: Biopsy, Data modeling, Rubidium, Image segmentation, Performance modeling, Computed tomography, Tumor growth modeling, Scanners, Feature selection, Biological research

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Proceedings Article | 27 February 2018 Paper

Computer-aided classification of breast masses using contrast-enhanced digital mammograms

Gopichandh Danala, Faranak Aghaei, Morteza Heidari, Teresa Wu, Bhavika Patel, Bin Zheng

Proceedings Volume 10575, 105752K (2018) https://doi.org/10.1117/12.2293136

KEYWORDS: Image segmentation, Breast, Mammography, Computer aided diagnosis and therapy, Computer aided design, Image classification, Tumors, Tissues, Digital mammography, Image acquisition, Image contrast enhancement

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Showing 5 of 9 publications

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