DSpace About DSpace Software 日本語

01 奈良県立医科大学 >
012 大学院 >
0122 学位請求論文 >
01221 博士論文(医学) >
2020年度 >

Please use this identifier to cite or link to this item: http://hdl.handle.net/10564/3755

Title: Accuracy of magnetic resonance imaging in predicting dentate line invasion in low rectal cancer.
Other Titles: 下部直腸癌におけるMRIを用いた歯状線浸潤の診断精度
Authors: Tatsumoto, Shota
Itoh, Takahiro
Takahama, Junko
Marugami, Nagaaki
Minamiguchi, Kiyoyuki
Tanaka, Toshihiro
Koyama, Fumikazu
Morita, Kohei
Kichikawa, Kimihiko
Keywords: Anal canal
Dentate line
Magnetic resonance imaging
Rectal cancer
Issue Date: Jun-2020
Publisher: Springer
Citation: Japanese journal of radiology Vol.38 No.6 p.539-546 (2020 Jun)
Abstract: Purpose: To retrospectively assess the accuracy of magnetic resonance imaging (MRI) in predicting dentate line invasion in low rectal cancer. Materials and methods: Eighty-one patients with primary rectal cancer were assessed by dynamic contrast-enhanced MRI. The location of the dentate line was assessed on MRI in 27 patients with upper-mid rectal cancer. Two observers independently evaluated the distance between the distal tumor edge and the MRI-defined dentate line in 54 patients with low rectal cancer, and the imaging and histological findings were compared. Results: The MRI-defined dentate line was 24.0 ± 3.8 mm above the anal verge in patients with upper-mid rectal cancer. The dentate line invasion status agreed with the histological findings in 49/54 (91%) patients (κ = 0.72 [95% CI 0.50-0.95]) for observer 1, and in 51/54 (94%) patients (κ = 0.83 [0.65-1.00]) for observer 2 in patients with low rectal cancer. Interobserver agreement was good (κ = 0.83 [0.65-1.00]). The MRI-derived distance between the distal tumor edge and the dentate line had significant correlation with the histological distance (r = 0.86 for reader 1 and 0.75 for observer 2). Conclusion: MRI demonstrates high accuracy in predicting dentate line invasion in low rectal cancer.
Description: 博士(医学)・甲第748号・令和2年6月30日
© Japan Radiological Society 2020
© 2020 Springer Nature Switzerland AG. Part of Springer Nature.
This is a post-peer-review, pre-copyedit version of an article published in Japanese journal of radiology. The final authenticated version is available online at: http://dx.doi.org/10.1007/s11604-020-00933-5.
URI: http://hdl.handle.net/10564/3755
ISSN: 18671071
Academic Degrees and number: 24601A748
Degree-granting date: 2020-06-30
Degree name: 博士(医学)
Degree-granting institutions: 奈良県立医科大学
Appears in Collections:2020年度

Files in This Item:

File Description SizeFormat
01甲748本文の要旨.pdf甲748本文の要旨1.14 MBAdobe PDFView/Open
02甲748審査要旨.pdf甲748審査要旨965.49 kBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback