Yadav Harsh, Khanduri Sachin, Yadav Poonam, Pandey Sushma, Yadav Vivek Kumar, Khan Shahla
Department of Radiodiagnosis, Era's Lucknow Medical College and Hospital, Lucknow, Uttar Pradesh, India.
Indian J Radiol Imaging. 2020 Jan-Mar;30(1):59-63. doi: 10.4103/ijri.IJRI_59_19. Epub 2020 Mar 30.
Bone marrow edema is assumed to be caused as a result of trabecular microfractures that are detected by MRI. As MRI is not widely available in countries like India, this study aims to encourage the use of DECT in detection of bone edema as evidence with comparable efficiency to MRI.
To assess the diagnostic accuracy of dual-energy CT in detecting bone marrow edema in patients of trauma of lower limb and correlate it with MRI.
It is a cross-sectional study.
The study included 40 patients of age 15-70 years irrespective of sex. All the patients of lower extremity trauma underwent DECT and MRI evaluation after clinical evaluation. All the images were postprocessed on a work station and were further evaluated by a radiologist.
Mean attenuation at fractured site observed by Dual energy CT was found to be significantly higher as compared to that at adjacent site (170.75 ± 33.99 vs. 19.73 ± 22.50 HU). The sensitivity and specificity of dual energy CT as compared to MRI in detecting bone marrow edema were 94.1% and 91.3%, respectively. Of the 40 cases enrolled in the study, agreement of MRI and Dual energy CT was observed in 37 (92.5%).
Dual energy CT can be an effective alternative to MRI in the detection of bone marrow edema in patients of lower limb trauma. Dual energy CT can also be used in patients in whom MRI is contraindicated.
骨髓水肿被认为是由MRI检测到的小梁微骨折引起的。由于MRI在印度等国家尚未广泛普及，本研究旨在鼓励使用双能CT检测骨水肿，其效率与MRI相当。
评估双能CT在检测下肢创伤患者骨髓水肿中的诊断准确性，并与MRI进行对比。
这是一项横断面研究。
本研究纳入40例年龄在15至70岁之间、不限性别的患者。所有下肢创伤患者在临床评估后均接受了双能CT和MRI检查。所有图像均在工作站上进行后处理，并由放射科医生进一步评估。
双能CT观察到的骨折部位平均衰减值明显高于相邻部位（170.75±33.99 vs. 19.73±22.50 HU）。与MRI相比，双能CT检测骨髓水肿的敏感性和特异性分别为94.1%和91.3%。在本研究纳入的40例病例中，MRI与双能CT的一致性为37例（92.5%）。
在检测下肢创伤患者的骨髓水肿方面，双能CT可以成为MRI的有效替代方法。双能CT也可用于MRI禁忌的患者。
