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- W2381302520 abstract "Objective To evaluate the accuracy of CT imaging as compared with MR in preoperative staging in recal carcinoma by comparison with the pathologic findings.Methods The study included 106 histopathologically proven rectal carcinoma patients.Plain and contrast scanning were perfomed with a row CT scanner(GE Light Speed Pro 32).All MR examinations were performed on a 1.5 Tesla Simens Avanto unit.Different techniques had been proposed for phased-array surface coil MR imaging in both plain and contrast examinations.The relationship between MR and CT imaging results were tested.Results The accuracy of CT for overall T,T1-2,T3 and T4 stage was 75.5%,50.0%,88.2%,81.1% respectively;the accuracy of MR for overall T,T1-2,T3 and T4 stage was 92.5%,92.6%,94.1%,90.9%.The accuracy of MR for T1-2 was superior to CT(P0.05,Fisher exact test).The difference was not statisticly significant for T3,T4 stage(χ2=0.366,0.772,P0.05).The overall accuracy of CT,MR without DWI and MR with DWI were respectively 56.6%,58.5% and 73.6%.Analyzed by statistics of χ2,MR with DWI had medium relationship with pathologic results and kappa value was 13.927(P0.01).No statistic relationship between the definition of the involved lymph node using CT and MR without DWI and pathologic results was found.The Kappa values were respectively 1.128 and 1.585(P0.05).Conclusion MR and CT were accurate in predicting the stage of bowel wall penetration in rectal carcinoma.Preoperative staging of tumor penetration was performed better with MR as compared with CT.MR could be as the first choice for preoperative T staging in rectal carcinoma.MR with DWI is more accurate than CT and MR for definition of the involved lymph node in patients with rectal cancer." @default.
- W2381302520 created "2016-06-24" @default.
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- W2381302520 date "2010-01-01" @default.
- W2381302520 modified "2023-09-26" @default.
- W2381302520 title "Comparative study between preoperative staging by MR and computed tomography in rectal carcinoma" @default.
- W2381302520 hasPublicationYear "2010" @default.
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