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Radiological Diagnosis of Cancer of Sigmoid Colon: Routine X-ray examination of colon with Gyroscope K. Matsuura 1 , N. Takeda 1 , T. Nakayama 1 , Y. Shimoda 1 , S. Yoshimoto 2 1Department of Radiology, Faculty of Medicine, Kyushu University 2Department of Radiology, Kyushu University Hospital pp.169-182
Published Date 1977/2/25
DOI https://doi.org/10.11477/mf.1403112475
  • Abstract
  • Look Inside

 The recently developed gyroscope is particularly useful for the examination of the colon. Even the Sigmoid colon which has been considered as a blind spot by the conventional method can be evaluated easily. However, special attention should be paid to decreasing the exposure dose since the gonads are directly irradiated in this examination. On the other hand, it is essential to delineate as fully as possible the fine mucosal detail.

 To achieve this, we have developed a method using a gyroscope in addition to the automation of the examination. By this method the fluoroscopy time has been shortened with the decreased exposure dose as a result. The measured gonadal dose was 190~205 mR in a female and 55 mR in a male.

 The diagnostic capability of this method for cancers and polyps of the sigmoid colon were as follows;

 1) All of the 13 cancers including early cancer were detected.

 2) Twenty-three of 24 polyps were discovered. One measuring only 5 mm in the greatest diameter could not be detected.

 Particular care is needed in the long Sigmoid colon since even an advanced cancer can be hidden from view. An overdiagnosis of small polyps increases the false positive rate. Meticulous attention should be paid to adequate preparation for the examination of the colon and the interpretation of the films.


Copyright © 1977, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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