Multi-parametric MRI in Patients of Bladder Cancer

Status Recruiting

Clinical Trial Summary

Accurate preoperative detection of muscle-invasive bladder cancer remains a clinical challenge. The investigators aimed to develop and validate a knowledge-guided causal diagnostic network for the detection of muscle-invasive bladder cancer with multiparametric magnetic resonance imaging(MRI).

Clinical Trial Description

Patients who underwent bladder MRI were retrospectively collected at three centers between January 2013 and September 2023. The investigators first constructed a nnUNet to segment causal region where muscle-invasive bladder cancer may occur. Subsequently, the investigators explored a causal network based on a modified ResNet3d-18 by striking a fine balance between nnUNet awareness and a self-supervised learning (SSL) model, which steered model to emulate diagnostic acumen of expert in staging muscle-invasive bladder cancer at MRI. Model was trained in center 1, and independently tested in center 1, center 2 and center 3. Ablation test was performed among all 13 Ablation-Test models using either single or multi-parametric MRI. Benefit was tested in six radiologists using vesical imaging-reporting and data system (VI-RADS) versus network-adjusted VI-RADS. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT06362330
Study type	Observational
Source	The First Affiliated Hospital with Nanjing Medical University
Contact
Status	Recruiting
Phase
Start date	July 1, 2021
Completion date	June 30, 2024

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