The diagnostic value of dual energy CT displaying knee joint torn ligament

VernacularTitle:双能CT对膝关节韧带损伤的诊断价值
Author: Qiang FENG ; Zhijun MA ; Huanjiu XI ; Hong YU ; Lishan TIAN ; Chuanming CHENG ; Yanjun GAO ; Yi XIN ; Wanwei ZHANG
Publication Type:Journal Article
Keywords: Tomography,X-ray computed; Radiography,dual-energy scanned projection; Knee joint; Posterior cruciate ligament
From: Chinese Journal of Postgraduates of Medicine 2009;32(23):15-17
CountryChina
Language:Chinese
Abstract: Objective To explore the value of dual energy CT displaying knee joint torn posterior cruciate ligament (PCL). Methods Ten cases with single knee joint torn PCL were scanned by 1.5 TMR and dual energy CT. By the use of postprocessing technique of muhiplanar reformation (MPR) and volume rendering technique (VRT), the CT value,length,thickness of PCL were assessed by paired t test respectively. Results MPR and VRT clearly displayed the PCL. The CT value of the patient sides and normal sides were(60.10±3.21), (72.98±7.35) HU(t=4.33,P=0.006), the length were(4.42±0.56),(4.14±0.49) cm (t=-1.20,P=0.285), the thickness of the attachment site and middle sire were (0.88±0.19), (0.58±0.10), (0.38±0.12) cm and (0.43±0.07), (0.39±0.03), (0.43±0.12) cm (t=-6.89,P=0.001;t=-4.38,P=0.007;t=0.85,P=0.587) respectively. Conclusion Dual energy CT can demonstrate clearly the ligament with three-dimension display,and may provide important information for diagnosis and per-surgical evaluation.