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Low-Risk Prostate Cancer: The Accuracy of Multiparametric MR Imaging for Detection

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Affiliated Author(s)
김시형김영환이희정김미정최미선
Alternative Author(s)
Kim, See HyungKim, Young HwanLee, Hee JungKim, Mi JeongChoe, Mi Sun
Journal Title
Radiology
ISSN
0033-8419
Issued Date
2014
Abstract
Purpose: To retrospectively determine diagnostic performance with multiparametric magnetic resonance (MR) imaging for detection of cancer of different tumor volumes and Gleason grades in patients with clinically low-risk prostate cancer.
Materials and Methods: The local ethical committee and institutional review board approved this study. Consecutive patients with clinically determined low-risk cancer (n = 100) were examined with multiparametric MR imaging (T2 weighted, diffusion weighted, and dynamic contrast material enhanced) by using a 3.0T imager before prostatectomy. Two radiologists independently assessed the likelihood of cancer per sextant. Cancers with a volume of 0.5 cm3 or more identified at histopathologic examination were compared with multiparametric MR images. Cancer detection with multiparametric MR imaging was assessed for tumors of different volumes and Gleason grades by using a logistic generalized estimating equation model with 95% confidence intervals (CIs) with two optimal dichotomized cutoff scores.
Results: For cancers greater than or equal to 0.5cm3, with respect to cancer volume and Gleason grade, multiparametric MR imaging showed high diagnostic performance for the detection of cancer. Diagnostic accuracy with multiparametric
MR imaging was significantly higher for cancers with a volume greater than 1 cm3 than for those with a volume of 0.5–1cm3 (87.7%; 95% CI: 82.4%, 94.3% vs 82.6%; 95% CI: 79.0%, 88.7%; P=.02) and for cancers with Gleason grades of 7 or more than for those with grades of 6 or less (89.2%; 95% CI: 85.4%, 93.8% vs 80.6%; 95% CI: 71.2%, 89.8%; P=.01). Detection rates for cancers with a volume more than 1 cm3 and a Gleason grade of 7 or more were significantly higher than for those with a volume of 0.5–1 cm3 and a Gleason grade of 6 or less(87.8%; 95% CI: 85.3%, 93.7% vs 82.0%; 95% CI: 75.6%, 86.1%; P=.01).
Conclusion: Detection of prostate cancer in patients with clinically low-risk cancer with multiparametric MR imaging is highly accurate, and larger cancer volume and higher Gleason grade are associated with higher detection accuracy.
Department
Dept. of Radiology (영상의학)
Dept. of Pathology (병리학)
Publisher
School of Medicine
Citation
Jin Young Kim et al. (2014). Low-Risk Prostate Cancer: The Accuracy of Multiparametric MR Imaging for Detection. Radiology, 271(2), 435–444. doi: 10.1148/radiol.13130801
Type
Article
ISSN
0033-8419
DOI
10.1148/radiol.13130801
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/34322
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Pathology (병리학)
1. School of Medicine (의과대학) > Dept. of Radiology (영상의학)
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