Dr. Brett A. Johnson Profile

Dr. Brett A. Johnson

at Univ of Texas Southwestern Medical Ctr at Dallas

SPIE Involvement:

Author

Publications (10)

Proceedings Article | 1 April 2024 Poster + Paper

Feature extraction of ultrasound radiofrequency data for the classification of the peripheral zone of human prostate

Teja Pathour, Ling Ma, Douglas Strand, Jeffrey Gahan, Brett Johnson, Shashank Sirsi, Baowei Fei

Proceedings Volume 12932, 129321F (2024) https://doi.org/10.1117/12.3008643

KEYWORDS: Prostate, Ultrasonography, Radiomics, Feature extraction, Tissues, Tunable filters, Image segmentation, Prostate cancer, Image filtering, Acoustics

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Proceedings Article | 29 March 2024 Presentation + Paper

Dense surface reconstruction using a learning-based monocular vSLAM model for laparoscopic surgery

James Yu, Kelden Pruitt, Nati Nawawithan, Brett Johnson, Jeffrey Gahan, Baowei Fei

Proceedings Volume 12928, 129280J (2024) https://doi.org/10.1117/12.3008768

KEYWORDS: Laparoscopy, Cameras, Light sources and illumination, Video, 3D modeling, Surgery, Education and training, Depth maps, Tissues, Reconstruction algorithms

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Proceedings Article | 29 March 2024 Presentation + Paper

An augmented reality-guided biopsy system using a high-speed motion tracking and real-time registration platform

Patric Bettati, Jeff Young, Armand Rathgeb, Nati Nawawithan, Jeffrey Gahan, Brett Johnson, Ryan Aspenleiter, Fintan Browne, Aditi Chaudhari, Aditya Guin, Varin Sikand, Grant Webb, Jeremy Sherey, Alsadiq Shammet, Baowei Fei

Proceedings Volume 12928, 129281G (2024) https://doi.org/10.1117/12.3008573

KEYWORDS: Biopsy, Augmented reality, Prostate, Calibration, Imaging systems, 3D modeling, Visualization, Optical tracking, Holograms, Computed tomography

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Proceedings Article | 29 March 2024 Presentation + Paper

An augmented reality and high-speed optical tracking system for laparoscopic surgery

Nati Nawawithan, Jeff Young, Patric Bettati, Armand Rathgeb, Kelden Pruitt, Jordan Frimpter, Henry Kim, Jonathan Yu, Davis Driver, Amanuel Shiferaw, Aditi Chaudhari, Brett Johnson, Jeffrey Gahan, James Yu, Baowei Fei

Proceedings Volume 12928, 129280E (2024) https://doi.org/10.1117/12.3008448

KEYWORDS: Laparoscopy, Surgery, Augmented reality, 3D modeling, Autoregressive models, Holograms, Video, Cameras, Motion models, Imaging systems

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Proceedings Article | 13 March 2024 Presentation + Paper

A dual-camera hyperspectral laparoscopic imaging system

Kelden Pruitt, Armand Rathgeb, Jeffrey Gahan, Brett Johnson, Douglas Strand, Baowei Fei

Proceedings Volume 12831, 1283107 (2024) https://doi.org/10.1117/12.3005893

KEYWORDS: Tissues, Imaging systems, Reflectivity, Laparoscopy, Hyperspectral imaging, Cameras, Spectroscopy, Tunable filters, Optical filters, Calibration

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Proceedings Article | 3 April 2023 Presentation + Paper

A high-speed hyperspectral laparoscopic imaging system

Kelden Pruitt, Brett Johnson, Jeffrey Gahan, Ling Ma, Baowei Fei

Proceedings Volume 12466, 1246608 (2023) https://doi.org/10.1117/12.2653922

KEYWORDS: Tissues, Imaging systems, Reflectivity, Laparoscopy, Hyperspectral imaging, Cameras, Spatial resolution, Calibration, Liver, Kidney

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Proceedings Article | 4 April 2022 Poster + Presentation + Paper

A low-cost PVC-based dual-modality kidney phantom

Jeff Young, Maysam Shahedi, James Dormer, Brett Johnson, Jeffrey Gahan, Baowei Fei

Proceedings Volume 12034, 120342Q (2022) https://doi.org/10.1117/12.2611592

KEYWORDS: Kidney, Silicon, Tissues, X-ray imaging, 3D image processing, Liquids, Biopsy, 3D printing, X-ray computed tomography, X-rays, Ultrasound real time imaging

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Proceedings Article | 16 March 2020 Presentation + Paper

A complex dual-modality kidney phantom for renal biopsy studies

Jose Vargas, Phuc Le, Maysam Shahedi, Jeffrey Gahan, Brett Johnson, James Dormer, Sarah Shahub, Matthew Pfefferle, Blake Judson, Yasmeen Alshara, Qinmei Li, Baowei Fei

Proceedings Volume 11319, 113190J (2020) https://doi.org/10.1117/12.2549892

KEYWORDS: Kidney, Ultrasonography, Image segmentation, Biopsy, 3D modeling, Computed tomography, 3D image processing, Tissues, SolidWorks, Standards development

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Proceedings Article | 16 March 2020 Paper

Renal biopsy under augmented reality guidance

Matthew Pfefferle, Sarah Shahub, Maysam Shahedi, Jeffrey Gahan, Brett Johnson, Phuc Le, Jose Vargas, Blake Judson, Yasmeen Alshara, Qinmei Li, Baowei Fei

Proceedings Volume 11315, 113152W (2020) https://doi.org/10.1117/12.2550593

KEYWORDS: Ultrasonography, Image registration, Biopsy, Augmented reality, Computed tomography, 3D image processing, Kidney, Image segmentation, Magnetic tracking, Holograms

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Proceedings Article | 1 March 2017 Paper

Integrative analysis on histopathological image for identifying cellular heterogeneity

Young Hwan Chang, Guillaume Thibault, Brett Johnson, Adam Margolin, Joe Gray

Proceedings Volume 10140, 101400T (2017) https://doi.org/10.1117/12.2250428

KEYWORDS: Image processing, Image segmentation, Tissues, Image analysis, Tumors, Analytical research, Biological research, Statistical analysis, Medical imaging, Computer simulations

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Showing 5 of 10 publications

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