| Theme |
CT Colonography 2019 -- Recent Advances, Current Status and Its Evaluation as a Modality for Organized Cancer Screening |
| Title |
Ischemic Enteritis |
| Author |
Shigeyoshi Kijima |
Department of Radiology, School of Medicine, Jichi Medical University |
| Author |
Kenichi Utano |
Department of Coloproctology, Department of Radiology, Aizu Medical Center, Fukushima Medical University |
| Author |
Takahiro Sasaki |
Department of Radiology, School of Medicine, Jichi Medical University |
| Author |
Hideki Kanazawa |
Department of Radiology, School of Medicine, Jichi Medical University |
| Author |
Hiroyuki Fujii |
Department of Radiology, School of Medicine, Jichi Medical University |
| Author |
Hideharu Sugimoto |
Department of Radiology, School of Medicine, Jichi Medical University |
| [ Summary ] |
Innovative development in CT scanner technology has enabled CT colonography. The spiral CT technology with multiple parallel rows of detectors could reduce scan times and acquire data for several image slices simultaneously. Workstations with 3D application are available to aid evaluation. Advanced 3D visualization techniques such as virtual dissection and panoramic view are probably more time-efficient than conventional 3D images. It should also improve the lesions in blind spots. However the distortion and the increased amount of image information could have a negative impact. Conventional 3D evaluation is important at this time. Computer aided detection (CAD) improves sensitivity for polyp detection. There are still limitations such as failure to detect difficult lesions which results in false negative or confusing normal colon structures, stool, and artifacts with polyps causing false positives. Efforts have been devoted to developing techniques to make software smarter. |