Comparison of T2-weighted imaging, diffusion-weighted imaging and contrast-enhanced T1-weighted MR imaging for evaluating perianal fistulas.
Clin Imaging 2017;
44:16-21. [PMID:
28395191 DOI:
10.1016/j.clinimag.2017.03.019]
[Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 03/01/2017] [Accepted: 03/29/2017] [Indexed: 12/18/2022]
Abstract
PURPOSE
To compare the lesion conspicuity and diagnostic performance of three imaging data sets (T2WI, combined T2WI and DWI [combined DWI], contrast-enhanced (CE)-T1WI) in assessing perianal fistulas.
METHODS
Two radiologists with 7 and 15years of experience assessed 28 fistulas from 24 patients in each image set.
RESULTS
The lesion conspicuity was improved for only one reader after reading the combined DWI (P=0.0039) and CE-T1WI (P=0.0215). The accuracy was stationary for fistula type (reader 1, all 93%; reader 2, all 89%) or for direction of internal opening (96% for all sets; 92% for CE-T1WI).
CONCLUSION
Although combined DWI and CE-T1WI might improve fistula conspicuity, they showed comparable diagnostic performance to T2WI.
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