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- Title
Rapid multiplanar abdominal survey using MRI with the steady-state free-precession technique.
- Authors
Dutka, Michael V.; Bergin, Diane; O'Kane, Patrick L.; Frangos, Andrea J.; Parker, Laurence; Mitchell, Donald G.
- Abstract
Purpose To retrospectively evaluate the sensitivity, specificity, and positive and negative predictive values of steady-state free-precession (SSFP) survey MRI of the abdomen. Materials and Methods A total of 375 consecutive outpatients underwent abdominal MRI at 1.5T. Excluding diffuse metastatic disease, 110 patients had at least one other clinically important finding. The SSFP survey included contiguous 5-mm-thick axial, sagittal, and coronal slices (total 90 slices) obtained during a total of 90 seconds of free breathing. Studies were reviewed by two experienced MRI readers independently, randomized, blinded, and at different sittings. The chi-squared test was used to compare SSFP to full MRI for showing clinically important findings. In a subset of 30 patients, confidence intervals (CI) were calculated to compare the accuracy of SSFP and full MRI as predictors of biopsy result. Results SSFP detected 87.3% of clinically important findings and 93.3% of malignancies reported on the full MRI, with a 1.5% false-positive rate. Significant association was shown between SSFP and full MRI for clinically important findings ( P < 0.0001). Compared to biopsy, accuracy of SSFP was high (85% ± 12.7%), though not as high as full MRI (93.3% ± 8.8%). Conclusion SSFP provides a rapid survey of the abdomen, with good sensitivity and few false positives. J. Magn. Reson. Imaging 2007. © 2007 Wiley-Liss, Inc.
- Publication
Journal of Magnetic Resonance Imaging, 2008, Vol 27, Issue 1, p198
- ISSN
1053-1807
- Publication type
Article
- DOI
10.1002/jmri.21213