Document Detail

Gadolinium-enhanced dynamic magnetic resonance imaging with endorectal coil for local staging of rectal cancer.
MedLine Citation:
PMID:  20512547     Owner:  NLM     Status:  MEDLINE    
PURPOSE: The aim of this study was to evaluate the accuracy of dynamic gadolinium (Gd)-enhanced magnetic resonance imaging (MRI) with endorectal coil for assessing tumor invasion based on simple classification criteria. MATERIALS AND METHODS: A total of 58 patients with operable primary rectal cancer underwent preoperative MRI. An enhancement pattern in Gd-enhanced dynamic MRI with regard to tumor penetration was clarified. Retrospectively, two observers independently scored T2-weighted MRI and T2-weighted MRI combined with Gd-enhanced dynamic MRI for tumor penetration using the following criteria: With Gd-enhanced dynamic MRI, T1 tumors showed an early enhanced line around the tumor as rim enhancement; T2 tumors appeared as black lines or double layers, as the muscularis propria kept its integrity; T3 tumors showed partial discontinuity of the muscularis propria as a dotted line and a perforated area as an interrupted line. A confidence level scoring system was used, and receiver operating characteristic curves were generated. RESULTS: There were no significant differences at the T1 stage. There were significant differences for observer 1 (P = 0.001 for observer 1) at the T2 stage. There were significant differences for both observers (P = 0.001 for observer 1 and P = 0.005 for observer 2) at the T3 stage. CONCLUSION: Our criteria for Gd-enhanced dynamic MRI were effective for T3 stage tumors.
Mitsuharu Tamakawa; Yuriko Kawaai; Ryuji Shirase; Taishi Satoh; Hidenari Akiba; Hideki Hyodoh; Masato Hareyama; Tomohisa Furuhata; Koichi Hirata; Tadashi Hasegawa
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Publication Detail:
Type:  Journal Article     Date:  2010-05-29
Journal Detail:
Title:  Japanese journal of radiology     Volume:  28     ISSN:  1867-108X     ISO Abbreviation:  Jpn J Radiol     Publication Date:  2010 May 
Date Detail:
Created Date:  2010-05-31     Completed Date:  2010-09-16     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101490689     Medline TA:  Jpn J Radiol     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  290-8     Citation Subset:  IM    
Department of Radiology, Sapporo Medical University, S1 W16 Chuo-ku, Sapporo, 060-8543, Japan.
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MeSH Terms
Aged, 80 and over
Contrast Media / diagnostic use*
Gadolinium DTPA / diagnostic use*
Image Interpretation, Computer-Assisted
Magnetic Resonance Imaging / instrumentation*,  methods*
Middle Aged
Neoplasm Staging
Predictive Value of Tests
ROC Curve
Rectal Neoplasms / pathology*
Retrospective Studies
Sensitivity and Specificity
Reg. No./Substance:
0/Contrast Media; 80529-93-7/Gadolinium DTPA

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