Intra-arterial catheterization
We mostly scanned the left forelimb; however, when catheterization in the left was unavailable, we scanned the right forelimb in left lateral recumbency due to facility limitations − five of fifty-four CT scans. In the first phase, after one CT scan, one horse experienced damage to the left artery; however, ultrasound during the second phase revealed recovery of the artery after three months. In the second phase, ultrasonography identified a damaged left medial palmar artery after a CT scan of 300 mg I/s of IDR at a rate of 6 mL/s, wherein the maximal pressure was 118 psi. The horse showed no soft-tissue edema or lameness following CT scans. The other horses did not show any complications associated with intra-arterial catheterization.