Comparison of Multidetector CT and Gadobutrol-Enhanced MR Imaging for Evaluation of Small, Solid Pancreatic Lesions.
10.3348/kjr.2016.17.4.509
- Author:
Tae Won CHOI
1
;
Jeong Min LEE
;
Jung Hoon KIM
;
Mi Hye YU
;
Joon Koo HAN
;
Byung Ihn CHOI
Author Information
1. Department of Radiology, Seoul National University Hospital, Seoul 03080, Korea. jmsh@snu.ac.kr
- Publication Type:Original Article
- Keywords:
Pancreas;
CT;
MRI
- MeSH:
Adenocarcinoma;
Diagnosis;
Humans;
Magnetic Resonance Imaging*;
Multidetector Computed Tomography;
Pancreas;
Pancreatic Ducts;
Sensitivity and Specificity
- From:Korean Journal of Radiology
2016;17(4):509-521
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVE: To compare multidetector computed tomography (MDCT) and MRI for lesion conspicuity, as well as the detection and characterization of small solid pancreatic lesions (SPLs). MATERIALS AND METHODS: 193 patients with small SPLs (< 3 cm) and 52 patients with normal pancreas who underwent both multiphasic MDCT and gadobutrol-enhanced MRI were included in our study. Two radiologists blinded to the pathologic diagnoses independently reviewed those images, and determined the detection of "SPL per se" and "SPL in consideration of secondary features", the lesion conspicuity, the probability of pancreatic ductal adenocarcinoma (PDAC), and the most likely specific diagnosis. RESULTS: The sensitivity of MRI for "detection of SPL per se" was significantly higher than that of CT in both reviewers: 92.7% (179/193) and 97.9% (189/193), respectively, for reviewer 1 (p = 0.031) and 90.7% (175/193) and 99.5% (192/193), respectively, for reviewer 2 (p < 0.001). In addition, MRI provided better lesion conspicuity than MDCT for both reviewers (p < 0.001). However, CT and MRI did not show significant difference in sensitivity for "detection of SPL in consideration of secondary features", specificity for SPL detection, and differentiation of PDAC vs. non-PDAC (p > 0.05). The accuracies of CT and MRI for making a specific diagnosis were as follows: 85.7% (210/245) vs. 86.9% (213/245), respectively, for reviewer 1 (p = 0.736), and 91.8% (225/245) vs. 93.5% (229/245), respectively, for reviewer 2 (p = 0.454). CONCLUSION: MRI showed better lesion conspicuity than MDCT, but did not show significantly different diagnostic performance compared with MDCT for detecting and characterizing small SPLs.
