Endometrial carcinoma detection with 3.0 Tesla imaging: which sequence is more useful

Area of Science:

• Radiology
• Oncology
• Medical Imaging

Background:

• Endometrial cancer (EC) detection is critical for effective pre-operative management.
• Magnetic resonance imaging (MRI) plays a key role in evaluating EC, but the optimal sequence remains debated.

Purpose of the Study:

• To determine the most reliable MRI sequence for evaluating endometrial cancer.
• To compare different MRI sequences against histopathological results as the gold standard.

Main Methods:

• A retrospective study of 62 women with EC using 3 Tesla MRI.
• MRI sequences included diffusion-weighted imaging (DWI), T2-weighted imaging (T2WI), dynamic contrast-enhanced T1-weighted imaging (DCE-T1WI), and ZOOMit DWI.
• Apparent diffusion coefficient (ADC) maps were analyzed, and all sequences were compared to post-hysterectomy histopathology.

Main Results:

• No significant differences in myometrial invasion were found between DWI, ZOOMit DWI, and DCE-T1WI (p=0.054, p=0.039).
• Strong correlations were observed between DWI and ZOOMit DWI (0.943) and between ZOOMit DWI and DCE-T1WI (0.949).
• No statistically significant differences in tumor size were found between sequences or compared to histopathology. ZOOMit DWI's ADC values differentiated EC histological subtypes.

Conclusions:

• All MRI sequences are valuable, with varying priorities based on information needs.
• ZOOMit and conventional DWI are most valuable for assessing myometrial invasion in EC.
• T2WI and DCE-T1WI are more valuable for determining EC tumor size.