Use of intra-arterial multi-detector row CT angiography for the evaluation of an ischaemic limb in a patient with renal impairment.
The vastly improved scanning speed and z-axis resolution afforded by multi-detector technology has allowed CT to refine its traditional roles and to explore many new applications in imaging. We present a case report of a patient with renal failure and an ischaemic leg, which illustrates a useful new CT vascular imaging application. By carrying out 16-channel multi-detector row CT angiography through a sheath introduced into the common femoral artery, we obtained a high-quality angiographic image of the affected leg, using only 30 mL of iodinated contrast material. The examination definitively showed the number, distribution and patency of the tibial run-off arteries, with significant influence on the patient's subsequent clinical management. This simple and relatively minimally invasive technique is useful in peripheral vascular imaging, when conventional CT angiography using a large volume of i.v. contrast and MR angiography are unsuitable or unavailable.
Bell
K W
KW
Department of Radiology, Western Hospital, Melbourne, Victoria, Australia. kevin.bell@wh.org.au
Heng
R C
RC
Atallah
J
J
Chaitowitz
I
I
D000368:Aged; D015901:Angiography, Digital Subtraction; D000075202:Contraindications; D003287:Contrast Media / Q000008:administration & dosage; D005260:Female; D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D007472:Iohexol / Q000008:administration & dosage / Q000031:analogs & derivatives; D007511:Ischemia / Q000000981:diagnostic imaging*; D007676:Kidney Failure, Chronic / Q000150:complications*; D007866:Leg / Q000098:blood supply*; D014057:Tomography, X-Ray Computed
D003287:Contrast Media; D007472:Iohexol; C038192:iopromide