Semi-automatic staging system for rectal cancer using spatially oriented unwrapped endorectal ultrasound

John R. Warmath; Zhujiang Cao; Philip Bao M.D.; Alan J. Herline; Robert L. Galloway Jr.

doi:10.1117/12.595263

12 April 2005 Semi-automatic staging system for rectal cancer using spatially oriented unwrapped endorectal ultrasound

John R. Warmath, Zhujiang Cao, Philip Bao M.D., Alan J. Herline, Robert L. Galloway Jr.

Proceedings Volume 5744, Medical Imaging 2005: Visualization, Image-Guided Procedures, and Display; (2005) https://doi.org/10.1117/12.595263
Event: Medical Imaging, 2005, San Diego, California, United States

Abstract

Endorectal ultrasound is currently the gold standard for the staging of rectal cancer; however, the accurate staging of the disease requires extensive training and is difficult, especially for those clinicians who do not see a large number of patients per year. Therefore, there is a need for a semi-automatic staging system to assist the clinicians in the accurate staging of rectal cancer. We believe that the unwrapping of the circular ERUS images captured by a spatially tracked ERUS system is a step in this direction. The steps by which a 2D image can be unwrapped are described thereby allowing the circular layers of the rectal wall to be displayed as flat layers stacked on top of each other. We test the unwrapping process using images from a cylindrical rectal phantom and a human rectum. The process of unwrapping endorectal ultrasound images qualitatively provides good visualization of the layers of the rectal wall and rectal tumors and supports the continual study of this novel staging system.

Citation Download Citation

John R. Warmath, Zhujiang Cao, Philip Bao M.D., Alan J. Herline, and Robert L. Galloway Jr. "Semi-automatic staging system for rectal cancer using spatially oriented unwrapped endorectal ultrasound", Proc. SPIE 5744, Medical Imaging 2005: Visualization, Image-Guided Procedures, and Display, (12 April 2005); https://doi.org/10.1117/12.595263

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