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- W2368845583 abstract "Objective:Using 64-slice spiral CT perfusion technique to investigate tumor vascularity in rectal carcinoma and to analyze the perfusion parameters correlated with preoperative primary tumor,local recurrence and scar tissue.(Methods:)Perfusion CT of rectal carcinoma was performed with 64-slice spiral CT in 20 patients with T_3 or T_4 rectal carcinoma before surgery and about 6 months after surgery.All the patients were confirmed by endoscopy before surgery.A dynamic study(cine mode) was acquired through the lesion following intravenous contrast administration and the data were acquired and analyzed by using commercial software(ADW 4.2) to calculate tissue blood flow(BF),blood volume(BV),mean transit time(MTT),and vascular permeability surface(PS).The perfusion parameters of normal rectal tissue,pre-(operative) primary tumor,local soft tissue density after surgery(recurrence or scar tissue) were compared.Results:The primary rectal carcinoma and the recurrence lesion showed higher BF and shorter MTT compared with those of normal rectum.The scar tissue showed significant reduction in BF and increase in MTT compared with those of primary rectal carcinoma and the recurrence.There was a significant difference in BF and MTT values between the recurrence lesion and scar tissue.Conclusion:64-slice spiral CT perfusion study is useful in evaluating postoperative local recurrence and scar tissue,with significant difference in BF and MTT value,and it is very helpful in the diagnosis of local recurrence of rectal carcinoma." @default.
- W2368845583 created "2016-06-24" @default.
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- W2368845583 date "2006-01-01" @default.
- W2368845583 modified "2023-09-24" @default.
- W2368845583 title "Perfusion Technique Using 64-slice Spiral CT in the Study of Post-surgical Local Recurrence or Scar Tissue of Rectal Carcinoma" @default.
- W2368845583 hasPublicationYear "2006" @default.
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