In 2008, CT colonography was approved by the American Cancer Society as a technique for screening for colorectal cancer. This approval should be considered an important step in the recognition of the technique, which although still relatively new is already changing some diagnostic algorithms. This update about CT colonography reports the quality parameters necessary for a CT colonographic study to be diagnostic and reviews the technical innovations and colonic preparation for the study. We provide a brief review of the signs and close with a discussion of the current indications for and controversies about the technique.
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| http://dx.doi.org/10.1016/j.rx.2011.01.009 | DOI Listing |
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G-SET-DCL: a guided sequential episodic training with dual contrastive learning approach for colon segmentation.
Int J Comput Assist Radiol Surg
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Purpose: This article introduces a novel deep learning approach to substantially improve the accuracy of colon segmentation even with limited data annotation, which enhances the overall effectiveness of the CT colonography pipeline in clinical settings.
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Background: Recent studies have focused on evaluating the biomarker value of textural features in radiological images. Our study investigated whether or not a texture analysis of computed tomographic colonography (CTC) images could be a novel biomarker for colorectal cancer (CRC).
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Colomb Med (Cali)
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Bezmi Alem Vakif University, Faculty of Medicine, Istanbul, Turkey Bezmi Alem Vakif University Bezmi Alem Vakif University Faculty of Medicine Istanbul Turkey.
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Article Synopsis
- This study examines whether a new method of CT colonography (CTC) using Auto-kVp selection, higher preset ASIR-V, and noise index can effectively reduce radiation dose while accurately detecting colorectal tumors.
- Ninety patients underwent two types of CTC: standard dose (SDCTC) and ultra-low dose (ULDCTC), with results showing significantly lower radiation exposure for ULDCTC while maintaining or improving image quality.
- Both CTC methods demonstrated high rates of tumor detection and consistent tumor location results when compared with surgical findings, suggesting that the new method is a viable option for safer colorectal cancer screening.
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