Fig. 2

a Front view of the CT angiography. The irregularities of the SMA due to vasospasm were observed. The MCA could not be detected by CT angiography, and the narrowing of the ICA was observed. The RCA could not be detected. Although the IMA was patent, the left colic artery was also undetectable. There was no abnormality in the SMV. b In 2D axial view, compared to the SMV, narrowing of the SMA, MCA, and ICA was observed. No thrombosis was detected in the SMA and SMV. ICA ileocolic artery, MCA middle colic artery, IMA inferior mesenteric artery, SMA superior mesenteric artery, SMV superior mesenteric vein