Multiparametric Magnetic Resonance Imaging for Bladder Cancer: Development of VI-RADS (Vesical Imaging-Reporting And Data System).
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Date
2018-09-01Author
Panebianco, V
Narumi, Y
Altun, E
Bochner, BH
Efstathiou, JA
Hafeez, S
Huddart, R
Kennish, S
Lerner, S
Montironi, R
Muglia, VF
Salomon, G
Thomas, S
Vargas, HA
Witjes, JA
Takeuchi, M
Barentsz, J
Catto, JWF
Type
Journal Article
Metadata
Show full item recordAbstract
CONTEXT: Management of bladder cancer (BC) is primarily driven by stage, grade, and biological potential. Knowledge of each is derived using clinical, histopathological, and radiological investigations. This multimodal approach reduces the risk of error from one particular test, but may present a staging dilemma when results conflict. Multiparametric magnetic resonance imaging (mpMRI) may improve patient care through imaging of the bladder with better resolution of the tissue planes than computed tomography and without radiation exposure. OBJECTIVE: To define a standardized approach to imaging and reporting mpMRI for BC, by developing a VI-RADS score. EVIDENCE ACQUISITION: We created VI-RADS (Vesical Imaging-Reporting And Data System) through consensus using existing literature. EVIDENCE SYNTHESIS: We describe standard imaging protocols and reporting criteria (including size, location, multiplicity, and morphology) for bladder mpMRI. We propose a five-point VI-RADS score, derived using T2-weighted MRI, diffusion-weighted imaging, and dynamic contrast enhancement, which suggests the risks of muscle invasion. We include sample images used to understand VI-RADS. CONCLUSIONS: We hope that VI-RADS will standardize reporting, facilitate comparisons between patients, and in future years, will be tested and refined if necessary. While we do not advocate mpMRI for all patients with BC, this imaging may compliment pathology or reduce radiation-based imaging. Bladder mpMRI may be most useful in patients with non-muscle-invasive cancers, in expediting radical treatment or for determining response to bladder-sparing approaches. PATIENT SUMMARY: Magnetic resonance imaging (MRI) scans for bladder cancer are becoming more common and may provide accurate information that helps improve patient care. Here, we describe a standardized reporting criterion for bladder MRI. This should improve communication between doctors and allow better comparisons between patients.
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Subject
Humans
Contrast Media
Image Interpretation, Computer-Assisted
Observer Variation
Diffusion Magnetic Resonance Imaging
Neoplasm Staging
Reproducibility of Results
Predictive Value of Tests
Consensus
Urinary Bladder Neoplasms
Data Systems
Research team
Clinical Academic Radiotherapy (Huddart)
Language
eng
Date accepted
2018-04-26
License start date
2018-09
Citation
European urology, 2018, 74 (3), pp. 294 - 306
Publisher
ELSEVIER SCIENCE BV