Diagnosis
4
Figure 2. Suggested algorithm for anatomic imaging
in patients with CLTI who are candidates for
revascularization
a
Image arterial
anatomy
NO
Duplex ultrasound
a
In some cases, it may be appropriate to proceed directly to angiographic imaging (computed
tomography angiography [CTA], magnetic resonance angiography [MRA], or catheter) rather than
to duplex ultrasound (DUS) imaging.
Diagnostic catheter
angiography
CTA
(not recommended
for detailed
infrapopliteal
visualization)
Adequate imaging
Adequate
imaging of tibial
and foot vessels
Define preferred
target arterial
pathway
Adequate
imaging of tibial
and foot vessels
Detailed foot
MRA
(if available)
YES
YES
YES
NO
NO
MRA
(depending on
availability and
expertise)
