Table 1.

Definitions used to grade calcifications of the supplying arteries of the gastric tube seen on preoperative CT images by van Rossum et al9

Artery	Score 0	Score 1	Score 2
Aortaa	Absent	Minor calcifications: <9 foci and ≤3 foci extending over ≥3 sections	Major calcifications: >9 foci or >3 foci extending over ≥3 sections
Celiac axis	Absent	Minor calcifications: extending over <3 sections or MCSD of single focus ≤10 mm	Major calcifications: extending over ≥3 sections and MCSD of single focus >10 mm or involving both the proximal (aortoceliac) and distal (hepatosplenic bifurcation) parts
Right postceliac arteriesb	Absent	≥1 calcifications	Not applicable
Left postceliac arteriesc	Absent	≥1 calcifications	Not applicable

Notes:

^aAorta defined as descending part of thoracic aorta and abdominal part of aorta above celiac level.

^bRight postceliac arteries defined as common hepatic artery, gastroduodenal artery and right gastroepiploic artery.

^cLeft postceliac arteries defined as splenic artery and left gastroepiploic artery. Adapted with permission from van Rossum PS, Haverkamp L, Verkooijen HM, et al. Calcification of arteries supplying the gastric tube: a new risk factor for anastomotic leakage after esophageal surgery. Radiology. 2015;274(1):124–132.9

Abbreviations: CT, computed tomography; MCSD, maximum cross-sectional diameter.