Haustral fold detection method for CT colonography based on difference filter along colon centerline

Masahiro Oda; Takayuki Kitasaka; Kensaku Mori; Yasuhito Suenaga; Tetsuji Takayama; Hirotsugu Takabatake; Masaki Mori; Hiroshi Natori; Shigeru Nawano

doi:10.1117/12.812403

3 March 2009 Haustral fold detection method for CT colonography based on difference filter along colon centerline

Masahiro Oda, Takayuki Kitasaka, Kensaku Mori, Yasuhito Suenaga, Tetsuji Takayama, Hirotsugu Takabatake, Masaki Mori, Hiroshi Natori, Shigeru Nawano

Author Affiliations +

Proceedings Volume 7260, Medical Imaging 2009: Computer-Aided Diagnosis; 72602M (2009) https://doi.org/10.1117/12.812403
Event: SPIE Medical Imaging, 2009, Lake Buena Vista (Orlando Area), Florida, United States

Abstract

This paper presents a haustral fold detection method from 3D abdominal CT images. CT colonography (CTC) or virtual colonoscopy is a new colon diagnostic method to examine the inside of the colon. CTC system can visualize the interior of the colon from any viewpoint and viewing direction based on CT images of a patient. Both the supine and the prone positions of CT images are used for colon diagnosis to improve sensitivity of lesion detection. Registration of the supine and the prone positions of a patient is needed to improve efficiency of diagnosis using CT images in the two positions. Positions of haustral folds are utilizable as landmarks to establish correspondence between these two positions. We present a haustral fold detection method for registration of the supine and the prone positions. Haustral folds protrude almost perpendicular to a centerline of the colon. We designed new difference filter of CT values that can detect haustral folds. The difference filter calculates difference values of CT values along the colon centerline. It outputs high values in the haustral folds. False positive elimination is performed using two feature values including output value of the difference filter and volume of connected component. As the results of experiments using 12 cases of CT images, we confirmed that the proposed method can detect haustral folds satisfactorily. From evaluation using haustral folds ⪆ 3 [mm] in height and thickness, sensitivity of our method was 90.8% with 6.1 FPs/case.

Citation Download Citation

Masahiro Oda, Takayuki Kitasaka, Kensaku Mori, Yasuhito Suenaga, Tetsuji Takayama, Hirotsugu Takabatake, Masaki Mori, Hiroshi Natori, and Shigeru Nawano "Haustral fold detection method for CT colonography based on difference filter along colon centerline", Proc. SPIE 7260, Medical Imaging 2009: Computer-Aided Diagnosis, 72602M (3 March 2009); https://doi.org/10.1117/12.812403

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