Determining the suitability of EVAR for AAAs. Diagram depicting the measurements necessary for EVAR planning. a, aortic neck diameter; b, aortic neck diameter 15 mm distal to the lowest renal artery; c, aortic neck length; d, aneurysm diameter; e, lowest renal artery to aortic bifurcation length; f, aortic bifurcation diameter; g, right common iliac artery diameter; h, left common iliac artery diameter; i, right external iliac artery diameter; j, left external iliac artery diameter; k, lower renal to right internal iliac artery length; l, lower renal to left internal iliac artery length; m, right iliac artery sealing lengths; n, left iliac artery sealing lengths. ‡, aortic neck angle (in red). (Reprinted, with minor adaptations, with permission from Goshima S, Kanematsu M, Kondo H, et al. Preoperative planning for endovascular aortic repair of abdominal aortic aneurysms: feasibility of nonenhanced MR angiography versus contrast-enhanced CT angiography. Radiology 2013;267(3):948–955.)