Angiography

Trans-femoral angiography is an invasive procedure involving the direct puncture of the common femoral artery, passage of a catheter into the distal aorta and injection of a contrast medium (Fig. 15.7). The images are stored digitally and processed to eliminate the images of everything except the contrast-filled arteries (digital subtraction angiography). Angiography is not without complications: haemorrhage, false aneurysm formation, arterial thrombosis and peripheral embolisation. With the increased diagnostic accuracy of duplex ultrasonography and CT angiography, direct arterial puncture is usually now reserved for when a synchronous intervention (e.g. angioplasty) is planned.

Figure 15.6. CT angiography of abdominal aorta.

Figure 1S.7. Digital subtraction angiogram of superficial femoral artery.

Figure 15.6. CT angiography of abdominal aorta.

Figure 1S.7. Digital subtraction angiogram of superficial femoral artery.

Figure 15.8. External iliac stenosis.
Figure 15.9. External iliac stenosis following transluminal angioplasty.

needle. This wire is then used to position the catheter in the appropriate place in the arterial circulation.

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