Technical considerations for lower limb multidetector computed tomographic angiography.
Multidetector computed tomography (MDCT) enables imaging of the entire arterial tree non-invasively. Optimal technical considerations for performing MDCT angiography (MDCTA) are essential for accurate diagnosis and atherosclerotic disease stratification. This review article focuses on the various technical aspects necessary for peripheral computed tomographic angiography (CTA) acquisition. Common clinical indications for peripheral MDCTA and the latest scan protocols are described. The essential issue of radiation dose reduction is discussed, along with methods of optimal contrast bolus detection and delivery. Post-processing techniques are also presented. Previously, digital subtraction angiography was the only established reliable imaging technique to quantify atherosclerotic disease load; however, MDCTA may now challenge this old gold standard, along with other non-invasive techniques such as magnetic resonance angiography (MRA).
Department of Radiology, Division of Cardiovascular Imaging, Northwestern Memorial Hospital, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA. aoifekeeling@hotmail.com
Aoife N
AN
Keeling
Cormac
C
Farrelly
James C
JC
Carr
Vahid
V
Yaghmai
D000792:Angiography / Q000379:methods*; D015901:Angiography, Digital Subtraction; D003287:Contrast Media / Q000008:administration & dosage; D005260:Female; D006801:Humans; D007866:Leg / Q000098:blood supply; D018810:Magnetic Resonance Angiography; D008297:Male; D058729:Peripheral Arterial Disease / Q000175:diagnosis / Q000000981:diagnostic imaging*; D011857:Radiographic Image Interpretation, Computer-Assisted; D013679:Technology, Radiologic; D014057:Tomography, X-Ray Computed / Q000379:methods*
D003287:Contrast Media