Low radiation dose ECG-gated chest CT angiography on a 256-slice multidetector CT scanner

被引：2
作者：
Tariq A. Hameed
Shawn D. Teague
Mani Vembar
Ekta Dharaiya
Jonas Rydberg
机构：
[1] Indiana University School of Medicine,Department of Radiology
[2] Philips Healthcare,CT Clinical Science
来源：
The International Journal of Cardiovascular Imaging | 2009年 / 25卷
关键词：
Computed tomography; 256-slice MDCT; CT angiography; Chest; Aorta; ECG-gated imaging; Prospectively gated axial CT imaging;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Computed tomography angiography (CTA) of the thorax other than cardiac CTA, is utilized for a multitude of conditions and ranges in application from a diagnostic test, to presurgical planning and postsurgical follow-up. Helical CTA without electrocardiogram (ECG) gating has been routinely utilized for the evaluation of thoracic vasculature. However, its applicability can be limited in the evaluation of the thoracic aorta and pulmonary vasculature because of the artifacts resulting from cardiac motion. Traditional retrospective ECG-gated helical scans address this issue but at the price of a high radiation dose to the patient. In this paper we review CTA dose reduction strategies for non-coronary indications, examine field of view requirements, and discuss breath hold challenges for ECG-gated acquisitions. In addition, we present clinical examples performed using low-dose prospective gating technique for evaluation of the aorta acquired on a 256-slice multidetector computed tomography system.
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页码：267 / 278
页数：11
相关论文
共 96 条
[1]  
Rubin G(1997)Helical CT angiography if the thoracic aorta J Thorac Imaging 12 128-149
[2]  
Remy-Jardin M(1999)Spiral CT angiography of the pulmonary circulation Radiology 212 615-636
[3]  
Remy J(2002)Subsegmental pulmonary emboli: improved detection with thin-collimation multi-detector row spiral CT Radiology 222 483-490
[4]  
Schoepf U(2004)Imaging of aortic dissection by helical computed tomography Eur Radiol 14 1999-2008
[5]  
Holzknecht N(2001)Imaging of aortic aneurysms and dissection: CT and MRI J Thorac Imaging 16 35-46
[6]  
Helmberger T(2007)Diagnosis of blunt traumatic aortic injury 2007: still a nemesis Eur J Radiol 64 27-40
[7]  
Willoteaux S(2006)Pilot study of dynamic cine CT angiography for the evaluation of abdominal aortic aneurysms: implications for endograft treatment J Endovasc Ther 13 139-144
[8]  
Lions C(2002)Electrocardiographically gated multi-detector row CT for Assessment of valvular morphology and calcification in aortic stenosis Radiology 225 120-128
[9]  
Gaxotte V(1999)Motion artifacts of the aorta simulating aortic dissection on spiral CT J Comput Assist Tomogr 23 1-6
[10]  
Hartnell GG(1995)Aortic motion: a potential pitfall in CT imaging of dissection in the ascending aorta J Comput Assist Tomogr 19 569-572
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