Value of an early arteriographic acquisition for evaluating the splanchnic vessels as an adjunct to biphasic CT using a multislice scanner
Value of an early arteriographic acquisition for evaluating the splanchnic vessels as an adjunct to biphasic CT using a multislice scanner
复制标题
使用多层扫描仪作为双相 CT 辅助手段进行早期动脉造影采集评估内脏血管的价值
DOI：
10.1007/s00330-002-1566-0
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发表时间：
2003
影响因子：
5.9
通讯作者：
F. Musante
中科院分区：
文献类型：
--
作者：
F. Zandrino;P. Curone;L. Benzi;F. Musante
我们的目的是评估早期动脉扫描在多层计算机断层扫描中评估疑似原发性或转移性高血管肝病患者肝脏和肠系膜血管的临床价值。在42名患者中，在标准的动脉和门静脉扫描之前进行了非常早期的动脉造影扫描。早期采集的技术参数为：图像厚度2.5 mm；床速15 mm/S；螺距6；120 kVP；300 mA；扫描时间8.9-S；头尾采集方向；图像间隔1.25 mm；注射含碘造影剂5g/L后延迟16次S扫描；扫描体积聚焦于肝、脾和肠系膜上动脉。标准动脉、门静脉期扫描，层厚5 mm，床速15 mm/S，螺距6，8~10层S扫描时间，30层和70层S延迟扫描。这三个阶段是在三个不同的屏气过程中进行的。对轴位、多平面重建、最大密度投影和体积再现图像进行评估。对图像质量进行评分，并记录血管异常。17例行数字减影血管造影(DSA)。42例患者中，36例获得了高质量的CT血管成像。9例中发现血管异常12例，均经DSA证实：肝右动脉起源于SMA 3例，肝左动脉起源于胃动脉2例，SMA狭窄2例，肝脾动脉独立起源1例，动静脉瘘2例，肝总动脉和SMA动脉瘤2例。这项技术可以增加有关血管内脏解剖的重要信息，这对外科医生和介入放射科医生特别有用。
Our objective was to assess the clinical value of an early arterial scan for assessing the hepatic and mesenteric vasculature in patients with suspected primary or metastatic hypervascular liver disease undergoing multislice computed tomography. In 42 patients a very early arteriographic scan was performed before standard arterial and portal venous scans. Technical parameters of the very early acquisition were: 2.5-mm image thickness; table speed 15 mm/s; pitch 6; 120 kVp; 300 mA; 8.9-s scan time; cranio-caudal acquisition direction; 1.25-mm image interval reconstruction;16-s delay after injection of 110 ml of iodinated contrast agent at 5 ml/s; scan volume focused to image hepatic, splenic, and superior mesenteric arteries (SMA). Standard arterial and portal venous phases were performed with 5-mm image thickness, 15-mm/s table speed, pitch 6, 8- to 10-s scan time, 30- and 70-s delay. The three phases were performed during three different breath-holds. Axial, multiplanar reformatted, maximum intensity projection, and volume-rendering images were evaluated. Image quality was scored, and vascular abnormalities were recorded. Digital subtraction angiography (DSA) was performed in 17 patients. In 36 of 42 patients good-quality CT angiograms were obtained. In 9 patients 12 vascular abnormalities were found, all confirmed at DSA: 3 right hepatic arteries originating from the SMA, 2 left hepatic arteries from the gastric artery, 2 stenoses of the SMA, 1 independent origin of the hepatic and splenic arteries, 2 arteriovenous fistulas, and 2 aneurysms of the common hepatic artery and the SMA. This technique could add important information about vascular splanchnic anatomy which would be particularly useful for surgeons and interventional radiologists.