Detecting Distant Metastases in Prostate Cancer Using Whole-body MR Imaging Together with DWIBS (Diffusion-weighted...

Area of Science:

• Radiology and Medical Imaging
• Oncology
• Medical Technology

Background:

• Whole-body MRI (WB-MRI) has become a key noninvasive technique for detecting prostate cancer metastases over the last two decades.
• Diffusion-weighted imaging (DWI) has significantly expanded WB-MRI's utility, especially for identifying bone metastases.
• WB-MRI provides radiation-free, whole-body coverage in about 30 minutes, enabling serial examinations for metastasis detection and treatment response assessment.

Purpose of the Study:

• To review the evolution and current applications of WB-MRI in prostate cancer management.
• To highlight the role of diffusion-weighted imaging in assessing tumor burden.
• To discuss the potential of deep learning and quantitative imaging to address current limitations and integrate WB-MRI as a next-generation standard.

Main Methods:

• Review of advancements in WB-MRI technology, including diffusion-weighted imaging with background body signal suppression.
• Discussion of semi-quantitative assessment using total tumor diffusion volume.
• Exploration of emerging deep learning and quantitative imaging techniques for automated analysis.

Main Results:

• WB-MRI is effective for detecting distant metastases, particularly bone metastases, in prostate cancer.
• Diffusion-weighted imaging allows for semi-quantitative assessment of tumor burden.
• Comparative studies suggest WB-MRI and PSMA PET are complementary imaging modalities.

Conclusions:

• WB-MRI is a valuable tool for prostate cancer metastasis detection and treatment evaluation.
• Deep learning and quantitative imaging are poised to overcome current limitations, enhancing standardization and automation.
• Integrating WB-MRI with other modalities like PSMA PET can improve diagnostic accuracy and personalize treatment, establishing WB-MRI as a future standard.