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- W2363383732 abstract "Objective: To analyze the MRI finding of rectal carcinoma and to evaluate its diagnostic value.Methods:Thirty eight patients (27 men and 11 women,aged 17～76 years) with rectal carcinoma were examined with MRI using body coil before surgery.The sequences used T1 weighted spin echo(T1W SE),T2 weighted spin echo(T2W SE),and T2 weighted gradient echo (T2W GRE).All 38 cases underwent surgery and the diagnosis was confirmed by pathologic examination.Results:The positive rate of rectal carcinoma by MRI was 96.4%(37/38). The accuracy rate of perirectal fat invasion, lymphnode metastasis, adjacent organ invasion on SE were 84.2%(32/38),81.6%(31/38), 89.5%(34/38), respectively; while on GRE, they were 89.5%(34/38), 86.8%(33/38),and 92.1%(35/38), respectively.The staging by MRI in this series was 63.2%(24/38) with SE and 73.7%(28/38) with GRE.Combination of the two sequences,however,showed an accuracy rate of 78.9% (30/38).The tumors were isointensity signal on SE T1WI,hyperintensity signal on SE,T2WI and sharp high intensity signal on T2W GRE,compared with intensity signal of pelvic muscle.Conclusion:MRI has high value in the diagnosis and staging of rectal carcinoma,compared with SE.GRE would not be superior in displaying rectal carcinoma.The combination of the two sequences could increase the accuracy rate of rectal carcinoma on MRI." @default.
- W2363383732 created "2016-06-24" @default.
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- W2363383732 date "2003-01-01" @default.
- W2363383732 modified "2023-09-26" @default.
- W2363383732 title "MRI Diagnosis of Rectal Carcinoma" @default.
- W2363383732 hasPublicationYear "2003" @default.
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