Update on multiparametric MRI of urinary bladder cancer

Journal of Magnetic Resonance Imaging : JMRI
Christian B van der PolNicola Schieda

Abstract

While many institutions perform MRI during the work-up of urinary bladder cancer, others use MRI rarely if at all, possibly due to a variation in the reported staging accuracy and unfamiliarity with the potential benefits of performing MRI. Through increased application of functional imaging techniques including diffusion-weighted imaging (DWI) and dynamic contrast-enhanced (DCE) imaging, there has been a resurgence of interest regarding evaluation of bladder cancer with MRI. Several recent meta-analyses have shown that MRI is accurate at differentiating between ≤T1 and T2 disease (with pooled sensitivity/specificity of ∼90/80%) and differentiating between T2 and ≥T3 disease. DWI and DCE, in combination with high-resolution T2 -weighted images, improves detection and possibly local staging accuracy of bladder cancer. High b value echo-planar DWI is particularly valuable for tumor detection. Zoomed field of view and segmented readout DWI techniques improve image quality by reducing susceptibility artifact, while methods to extract calculated high b value images save time and improve the contrast-to-noise ratio. DCE traditionally required imaging of the pelvis with high temporal but lower spatial resolution; however, advances in ...Continue Reading

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Citations

Jan 25, 2020·Journal of Magnetic Resonance Imaging : JMRI·Satheesh KrishnaRonaldo Hueb Baroni
Mar 1, 2020·Journal of Magnetic Resonance Imaging : JMRI·Iztok CaglicTristan Barrett
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Feb 17, 2021·Cancer Research and Treatment : Official Journal of Korean Cancer Association·Hongzhe ShiJianzhong Shou

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