Imaging features of magnetic resonance imaging-diffusion weighted imaging on spinal tuberculosis and spinal metastatic tumor(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2018年第6期
- Page:
- 676-679
- Research Field:
- 医学影像物理
- Publishing date:
Info
- Title:
- Imaging features of magnetic resonance imaging-diffusion weighted imaging on spinal tuberculosis and spinal metastatic tumor
- Author(s):
- ZHANG Zhenxian; SONG Peng
- Department of CT Diagnosis, Yan’an People’s Hospital, Yan’an 716000, China
- Keywords:
- ; spinal tuberculosis; spinal metastatic tumor; magnetic resonance; diffusion-weighted imaging
- PACS:
- R445.2
- DOI:
- DOI:10.3969/j.issn.1005-202X.2018.06.011
- Abstract:
- : Objective To evaluate the clinical value of magnetic resonance imaging-diffusion weighted imaging (MRI-DWI) in the differential diagnosis of spinal tuberculosis and spinal metastatic tumor. Methods From January 2015 to August 2016, 48 patients with pathologically confirmed spinal tuberculosis and 62 patients with pathologically confirmed spinal metastatic tumor were selected. All patients underwent MRI-DWI examination. The imaging data of patients in the two groups were assessed for discussing the clinical value of MRI-DWI in the differential diagnosis of spinal tuberculosis and spinal metastatic tumor. Results At b=500 s/mm2, no statistical significance was found in the apparent diffusion coefficient (ADC) value of normal vertebral body between spinal tuberculosis group and spinal metastatic tumor group (P>0.05), while the ADC values of vertebral focus, bone marrow edema and paravertebral lesion were obviously higher in tuberculosis group as compared with spinal metastatic tumor group, with statistical differences (P<0.05). Tuberculosis group and spinal metastatic tumor group didn’t showed any statistical differences in signal-to-noise ratio (P>0.05). The SAR of tuberculosis group was remarkably higher than that of spinal metastatic tumor group (P<0.05). The sensitivity, specificity, rate of missed diagnosis and misdiagnosis rate of MRI-DWI in the differential diagnosis of spinal tuberculosis and spinal metastatic tumor were 93.55%, 93.75%, 6.45% and 6.25%, respectively, and the diagnostic kappa value was 0.871. Conclusion MRI-DWI has a high sensitivity and specificity in the differential diagnosis of spinal tuberculosis and spinal metastases, and the diagnostic results are highly consistent with pathological results.
Last Update: 2018-06-22