What type of study is this?

This is a Quantitative Study study.

September 17, 2025

Application of diffusion kurtosis imaging for differentiating T0-T1 from T2 rectal tumors

Key Points

Diffusivity in T0-T1 rectal tumors was significantly higher than in T2 tumors, improving diagnostic accuracy.
The study found an AUC of 0.810 for diffusivity in T0-T1 tumors, with a sensitivity of 70.0% and specificity of 82.7%.
Using diffusion kurtosis imaging, the evaluation included 138 patients with pathologically proven T0-T2 rectal tumors.
These findings imply that diffusivity could be a key biomarker for early rectal tumor assessment and treatment decisions.

Abstract

Motivation: Accurate MRI-based staging of early rectal tumors is crucial for decision-making in an era of organ-sparing treatment strategies. Goal(s): To investigate the value of DKI for distinguishing between T0-T1 and T2 rectal tumors. Approach: 138 patients with pathologically proven T0-T2 rectal tumors were evaluated with HR-T2WI, kurtosis and diffusivity from DKI, and ADC from DWI. Results: Diffusivity in pT0-T1 rectal tumors was significantly higher compared to pT2 rectal tumors and exhibited the highest diagnostic value in determining pT0-T1 rectal tumors, with an AUC of 0.810, a sensitivity of 70.0%, and a specificity of 82.7%. Impact: Diffusivity obtained from DKI has the potential to serve as a biomarker for early rectal tumor assessment, providing valuable information for selecting appropriate patients for organ preservation surgery.

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