Dataset Information

Defining the incremental value of 3D T2-weighted imaging in the assessment of prostate cancer extracapsular extension.

ABSTRACT:

Objectives

To assess the added value of 3D T2-weighted imaging (T2WI) over conventional 2D T2WI in diagnosing extracapsular extension (ECE).

Methods

Seventy-five patients undergoing 3-T MRI before radical prostatectomy were included. PI-RADS ??4 lesions were assessed for ECE on 2D T2W images using a 5-point Likert scale (1?=?no ECE, 5?=?definite ECE) and the length of tumour prostatic capsular contact. A second read using 3D T2W images and reformats evaluated ECE and the maximal 3D capsular contact length and surface.

Results

One hundred six lesions were identified at MRI. ECE was confirmed by histology in 54% (57/106) of lesions and 64% (48/75) of patients. Sensitivity and specificity for 3D T2 reads were 75.4% versus 64.9% (p?=?0.058), respectively, and 83.7% versus 85.7% (p?=?0.705) for 2D T2 reads, respectively. 3D T2W reads showed significantly higher mean subjective Likert scores of 3.7?±?1.4 versus 3.3?±?1.4 (p?=?0.001) in ECE-positive lesions and lower mean Likert score of 1.5?±?1 versus 1.6?±?0.9 (p?=?0.27) in ECE-negative lesions compared with 2D T2W reads. 3D contact significantly increased sensitivity from 59.6 to 73.7% (p?=?0.03), whilst maintaining the same specificity of 87.8% (p?=?1). High-grade group tumours (? Gleason 4?+?3) showed significantly higher ECE prevalence than low-grade tumours (88% versus 44%, p?Conclusions3D T2WI significantly increases sensitivity and confidence in calling ECE. The capsular contact length threshold differed between low- and high-grade cancers.

Key points

• 3D capsular contact length and 3D surface contact significantly increased sensitivity in diagnosing ECE. • 3D T2W reads significantly increased reader confidence in calling ECE. • Thresholds for capsular contact length differed between low-grade and high-grade cancers.

SUBMITTER: Caglic I

PROVIDER: S-EPMC6719333 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature

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Publications

Defining the incremental value of 3D T2-weighted imaging in the assessment of prostate cancer extracapsular extension.

Caglic Iztok I Povalej Brzan Petra P Warren Anne Y AY Bratt Ola O Shah Nimish N Barrett Tristan T

European radiology 20190318 10

<h4>Objectives</h4>To assess the added value of 3D T2-weighted imaging (T2WI) over conventional 2D T2WI in diagnosing extracapsular extension (ECE).<h4>Methods</h4>Seventy-five patients undergoing 3-T MRI before radical prostatectomy were included. PI-RADS ≥ 4 lesions were assessed for ECE on 2D T2W images using a 5-point Likert scale (1 = no ECE, 5 = definite ECE) and the length of tumour prostatic capsular contact. A second read using 3D T2W images and reformats evaluated ECE and the maximal 3 ...[more]

PMID: 30887192

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Dataset Information

Defining the incremental value of 3D T2-weighted imaging in the assessment of prostate cancer extracapsular extension.

Objectives

Methods

Results

Key points

Publications

Defining the incremental value of 3D T2-weighted imaging in the assessment of prostate cancer extracapsular extension.

Similar Datasets

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