Differentiating benign from malignant vertebral fractures using T1 -weighted dynamic contrast-enhanced MRI

Area of Science:

• Radiology
• Medical Imaging
• Oncology

Background:

• Distinguishing pathologic from benign vertebral fractures is clinically significant.
• Vertebral fractures require accurate characterization for appropriate management.
• Dynamic contrast-enhanced MRI (DCE-MRI) offers potential for noninvasive assessment.

Purpose of the Study:

• To evaluate the efficacy of DCE-MRI in differentiating pathologic from benign vertebral fractures.
• To compare perfusion parameters between different fracture types (pathologic, benign acute, benign chronic).

Main Methods:

• Retrospective review of 47 vertebral fractures in patients who underwent DCE-MRI, biopsy, and kyphoplasty.
• Analysis of perfusion parameters including plasma volume (Vp), K(trans), wash-in slope, peak enhancement, and area under the curve (AUC).
• Statistical comparison of parameters between pathologic, acute benign, and chronic benign fractures using Mann-Whitney U-test.

Main Results:

• Pathologic fractures exhibited significantly higher perfusion parameters (Vp, K(trans), wash-in slope, peak enhancement, AUC) than benign fractures (P < 0.01).
• Significant differences in all parameters were observed between chronic and acute benign fractures (P < 0.001).
• Vp and K(trans) effectively differentiated pathologic from acute benign fractures (P < 0.01).

Conclusions:

• T1-weighted DCE-MRI shows promise in differentiating vertebral fracture types.
• DCE-MRI can distinguish between pathologic vs. benign, acute vs. chronic fractures.
• This technique aids in the crucial differentiation of benign acute from pathologic vertebral fractures.