Differentiating atypical hemangiomas and vertebral metastases: a field-of-view (FOV) and FOCUS intravoxel incoherent motion (IVIM) diffusion-weighted imaging (DWI) study

European spine journal

article

Jibin Cao¹  Sijia Gao¹  Chenying Zhang¹  Yinxia Zhang²  Wenge Sun¹  Lingling Cui¹ 

[1] Department of Radiology, The First Hospital of China Medical University;Department of Radiology, Zhengzhou University Affiliated Zhengzhou Central Hospital

关键词: Intravoxel incoherent motion;    IVIM;    Difusion magnetic resonance imaging;    DWI;    Vertebral metastases;   

DOI  :  10.1007/s00586-020-06632-z

来源: Springer

【 摘 要 】

Some atypical vertebral hemangiomas (VHs) may mimic metastases on routine MRI and can result in misdiagnosis and ultimately to additional imaging, biopsy and unnecessary costs. The purpose of this study is to assess the utility of intravoxel incoherent motion (IVIM) diffusion-weighted imaging (DWI) on account of field-of-view optimized and constrained undistorted single shot (FOCUS) in distinguishing atypical VHs and vertebral metastases. A total of 25 patients with vertebral metastases and 25 patients with atypical VHs were confirmed by clinical follow-up or pathology. IVIM-DWI imaging was performed at different b values (0, 30, 50, 100, 150, 200, 400, 600, 800, 1000 mm2/s). IVIM parameters [the true diffusion coefficient (D), pseudodiffusion coefficient (D*), standard apparent diffusion coefficient (ADC), and perfusion fraction (f)] were calculated and compared between two groups by using Student’s t test. A receiver operating characteristic analysis was performed. Quantitative analysis of standard ADC and D parameters showed significantly lower values in vertebral metastases when compared to atypical hemangiomas [ADC value: (0.70 ± 0.12) × 10–3 mm2/s vs (1.14 ± 0.28) × 10–3 mm2/s; D value: (0.47 ± 0.07) × 10–3 mm2/s vs (0.76 ± 0.14) × 10–3 mm2/s, all P < 0.01]. The sensitivity and specificity of D value were 93.8% and 92.3%, respectively. The standard ADC value and D value may be used as an indicator to distinguish vertebral metastases from atypical VHs. FOCUS IVIM-derived parameters provide potential value in the quantitatively differentiating vertebral metastases from vertebral atypical hemangiomas.

【 授权许可】

Unknown