Wittram Conrad
Department of Thoracic Radiology, Massachusetts General Hospital, Founders 202, 55 Fruit St., Boston, MA 02114, USA.
AJR Am J Roentgenol. 2007 May;188(5):1255-61. doi: 10.2214/AJR.06.1104.
The purpose of this article is to describe the techniques to improve motion artifacts, vascular enhancement, flow artifacts, body habitus image noise, vascular opacification in parenchymal lung disease, streak artifacts, and the indeterminate CT pulmonary angiogram. In addition, this article will illustrate the diagnostic criteria of acute and chronic pulmonary emboli.
Pulmonary embolism is the third most common acute cardiovascular disease, after myocardial infarction and stroke, and it leads to thousands of deaths each year because it often goes undetected. For the more than 25 years that the direct signs of pulmonary embolism have been available to the radiologist on CT, this noninvasive technique has produced a paradigm shift that has raised the standard of care for patients with this disease.
本文旨在描述改善运动伪影、血管强化、血流伪影、体型图像噪声、实质性肺疾病中的血管显影、条纹伪影以及不确定的CT肺血管造影的技术。此外，本文还将阐述急性和慢性肺栓塞的诊断标准。
肺栓塞是仅次于心肌梗死和中风的第三大常见急性心血管疾病，由于其常常未被发现，每年导致数千人死亡。在CT上放射科医生能够看到肺栓塞直接征象的25多年来，这种非侵入性技术带来了范式转变，提高了对该疾病患者的治疗标准。
