Accuracy of prostate measurements on MRI with and without an endorectal coil
Abstract Purpose To assess accuracy of prostate measurements with and without endorectal coil (ERC). Materials and methods Anteroposterior (AP), transverse (TX) and craniocaudal (CC) measurements were recorded from 49 prostate magnetic resonance images (MRIs) done both with and without ERC. Prostate...
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Published in | Clinical imaging Vol. 39; no. 1; pp. 85 - 88 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
United States
Elsevier Inc
2015
Elsevier Limited |
Subjects | |
Online Access | Get full text |
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Summary: | Abstract Purpose To assess accuracy of prostate measurements with and without endorectal coil (ERC). Materials and methods Anteroposterior (AP), transverse (TX) and craniocaudal (CC) measurements were recorded from 49 prostate magnetic resonance images (MRIs) done both with and without ERC. Prostate weight was calculated as follows: AP*TX*CC* π /6. Prostate dimensions and weight were obtained from radical prostatectomy pathology report. Results After ERC placement, AP decreased by 0.71 cm [95% confidence interval (CI) 0.80–0.61], TX and CC increased by 0.26 cm (95% CI 0.18–0.33) and 0.25 cm (95% CI 0.16–0.35), respectively. Agreement between weight on pathology and MR was excellent: intraclass correlation coefficient (ICC) without ERC=0.96, ICC with ERC=0.90. Conclusion Although ERC distorts measurements and despite a tendency to underestimate the prostate weight, absolute agreement between prostate weight on pathology and MRI is excellent, both with and without ERC. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0899-7071 1873-4499 |
DOI: | 10.1016/j.clinimag.2014.09.003 |