Accuracy of prostate measurements on MRI with and without an endorectal coil

Victoria Chernyak; Milana Flusberg; Teodora Kurteva; Reza Ghavamian; Alla M. Rozenblit

doi:10.1016/j.clinimag.2014.09.003

Accuracy of prostate measurements on MRI with and without an endorectal coil

Victoria Chernyak, Milana Flusberg, Teodora Kurteva, Reza Ghavamian, Alla M. Rozenblit

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

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.

Original language	English (US)
Pages (from-to)	85-88
Number of pages	4
Journal	Clinical Imaging
Volume	39
Issue number	1
DOIs	https://doi.org/10.1016/j.clinimag.2014.09.003
State	Published - Jan 1 2015

Keywords

Edorectal coil
Prostate MRI
Prostate gland
Prostate measurement

ASJC Scopus subject areas

Radiology Nuclear Medicine and imaging

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10.1016/j.clinimag.2014.09.003

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title = "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 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.",

keywords = "Edorectal coil, Prostate MRI, Prostate gland, Prostate measurement",

author = "Victoria Chernyak and Milana Flusberg and Teodora Kurteva and Reza Ghavamian and Rozenblit, {Alla M.}",

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AU - Chernyak, Victoria

AU - Flusberg, Milana

AU - Kurteva, Teodora

AU - Ghavamian, Reza

AU - Rozenblit, Alla M.

PY - 2015/1/1

Y1 - 2015/1/1

N2 - 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.

AB - 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.

KW - Edorectal coil

KW - Prostate MRI

KW - Prostate gland

KW - Prostate measurement

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Accuracy of prostate measurements on MRI with and without an endorectal coil

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