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Keywords:
Pathology, Cancer, Computer Applications-Virtual imaging, Colonography MR, Colonography CT, MR, Image manipulation / Reconstruction, CT, Gastrointestinal tract, Colon, Abdomen
Authors:
M. Suzuki, H. Kanazawa, K. Utano, S. Kijima, T. Sasaki, Y. Miyakura, H. Horie, H. Sugimoto; Shimotsuke/JP
DOI:
10.1594/ecr2015/C-0811
Aims and objectives
The incidence rate of colorectal cancer in Japan has risen for both sexes [1].
Optical colonoscopy (OC) has been established as a preoperative examination for colorectal cancer and for screening [2].
Computed tomography colonography (CTC) is a new post-processing imaging technique of the colon and rectum that is used to screen for colorectal cancer and other intracolonic lesions [3-5].
Conventional CT has been used to evaluate the invasion depth of colorectal tumors.
T- staging consists of evaluating the tumor invasion depth using CTC,
which is thought to have an important role in preoperative evaluation [6].
On the other hand,
rectal magnetic resonance imaging (MRI) is another modality for evaluating tumor invasion depth for primary staging or restaging after neoadjuvant therapy [7].
A previous study showed no significant difference in the accuracy of T-staging between endoscopic ultrasonography (EUS) and MRI [8].
There have been no previous comparative studies examining detectability and coincidence rates among CTC,
MRI,
and OC.
For these reasons,
the aim of this study was to compare the detectability and coincidence rates of rectal cancer tumor invasion depth between CTC and OC,
and between rectal MRI and OC performed as preoperative examinations for patients with colon cancer.