https://clinicaltree.github.io/posts/validation-of-feasibility-of-magnetic-resonance-imaging-for-the-measurement-of-depth-of-tumor-invasi/
Validation of Feasibility of Magnetic Resonance Imaging for the Measurement of Depth of Tumor Invasion in Distal Bile Duct Cancer According to the New American Joint Committee on Cancer Staging System - Radiology Tree