【摘要】 目的 探討多層螺旋CT血管造影（MSCTA）對腹部巨大腫塊定位定性的診斷價值。 方法 收集2005年6月-2009年12月98例腹部巨大腫塊，作MSCTA檢查，觀察供血動脈來源和腫塊與血管關系。 結果 98例腫塊發現有主要供血動脈76例，其中惡性腫塊69例，血管受侵改變51例。 結論 由于MSCTA快捷、無創、經濟、方便、空間分辨率高等優點，對腹部巨大腫塊定位定性有較高診斷價值。【Abstract】 Objective To investigate the diagnostic value of multislice CT angiography (MSCTA) to abdominal huge mass from June 2005 to December 2009. The relation among blood vessel and supply origin and tumor was analyzed. Methods MSCTA was performed in 98 cases with abdomenial huge mass. Results The feeding artery of mass was discovered in 76 cases, in which malignant tumors were confirmed in 69 cases, the vessels were encroached on in 51 cases. Conclusion MSCTA may be of high value to diagnose abdominal huge mass because of noninvasiveness, convenience, and high resolution.
【Abstract】 Objective To explore the methods and appl ication value of surface shaded display (SSD) and multiplanarreconstruction (MPR) in the evaluation of acetabular morphology in patients with developmental dysplasia of the hip (DDH) before total hip arthroplasty (THA). Methods From October 2003 to November 2006, 17 patients (3 males and 14 females, aging from 35 years to 61 years) with osteoarthritis secondary to DDH were scanned with spiral CT preoperatively. According to the Crowe standard, 19 dysplasia hips were classified as type I in 4 hips, type II in 9 hips, type III in 6 hips. The obtained hip CT data were developed with SSD and MPR to observe spational position and bone stock of the acetabula. Results The dislocated extent was 25%-89% in these dysplasia hips according to the Crowe method and their sharp angles all exceeded 45°. Bone defect occurred to each of the acetabula, among which it was located in anterosuperior acetabulum in 5 hips, in superolateral acetabulum in 11 hips and in posterosuperior acetabulum in 3 hips. The hip images made with MPR showed that the minimum thickness of the medial wall of acetabula ranged from 2.0 mm to 10.9 mm. Among 15 unilateral dysplasia patients, the opening difference anddepth difference between the dysplasia acetabulum and the contralateral one ranged from 2.7 mm to 19.1 mm and from 2.3 mm to 13.1 mm, respectively. Conclusion SSD and MPR of spiral CT are effective methods in evaluating acetabular morphology preoperation and contribute to intraoperative acetabular reconstruction in patients with DDH performed THA.
【摘要】 目的 探索腹部淋巴結結核在多層螺旋CT（multi-layered screw CT，MSCT）掃描中CT值動態變化規律。 方法 2007年1月—2010年8月，收集經診斷性治療或診斷性活檢確診的17例患者腹部淋巴結結核，記錄腫大淋巴結數量、大小、位置，測量興趣淋巴結中心、次中心、邊緣部平掃及注藥后20、60、120、180、360 s的CT值。 結果 共檢測出腫大淋巴結269個，主要分布在肝十二指腸韌帶、門腔間隙、肝胃韌帶、腸系膜根部和腰3平面以上腹主動脈周圍，CT值（49.2±13.6） Hu；強化淋巴結215個，選擇21個興趣淋巴結，測得注藥20、60、120、180、360 s后強化區CT值分別為（67.7±15.3）、（75.2±14.6）、（76.3±18.7）、（75.6±13.4）、（72.6±17.4） Hu。 結論 腹部淋巴結結核動態CT值表明動脈期明顯強化，靜脈期及延時掃描強化值維持在動脈期水平呈平臺樣改變，反映了淋巴結結核慢性感染的病理狀態。【Abstract】 Objective To explore the changing rule of dynamic CT values for abdominal lymph node tuberculosis in multi-layered screw CT (MSCT) multiphasic scanning. Methods Between January 2007 and August 2010, 17 cases of abdominal lymph node tuberculosis confirmed by diagnosis treatment or diagnosis biopsy were retrospectively analyzed. The quantity, size and position of the lymph nodes were recorded, and CT plain scanning values of the interested lymph node center, subcenter, and the margin of the node, and the CT values 20, 60, 120, 180 and 360 seconds after drug administration were also measured. Results Enlargement was found in 269 lymph nodes which were mainly distributed in the liver duodenum ligament, the gate cavity gap, the hepatogastric ligament, the mesentery root and the nodes in retroperitoneal space above the third lumbar vertebra. The average CT value was (49.2±13.6) Hu. A total of 215 lymph nodes had strengthened manifestations, and 21 interested lymph nodes were chosen for the study. The average CT values for lymph nodes with strengthened manifestations 20 ,60, 120, 180, and 360 seconds after drug administration were respectively (67.7±15.3), (75.2±14.6), (76.3±18.7), (75.6±13.4), and (72.6±17.4) Hu. Conclusion Dynamic CT value of abdominal lymph node tuberculosis shows a strengthening in the arterial phase, and the values in the the venous phase and the delayed phase maintain at the arterial phase level, and do not change, which indicates a pathological state of chronic infection of the lymph node tuberculosis.