Cinematic rendering of CT angiography for visualization of complex vascular anatomy after hybrid endovascular aortic aneurysm repair
Stefan L Zimmerman, Steven P Rowe, Elliot K Fishman
Emerg Radiol . 2021 Aug;28(4):839-843. doi: 10.1007/s10140-021-01922-5. Epub 2021 Mar 2.
The purpose of this study is to demonstrate the utility of cinematic rendering (CR) techniques for imaging of patients who have undergone hybrid repair of thoracoabdominal aortic aneurysms that are difficult to assess given anatomic complexity, particularly in the emergency setting. In this pictorial essay, we will explain why CR techniques are uniquely suited to improving anatomic visualization in patients with complex postoperative vascular anatomy. Verification of vessel patency is critical to optimal care of these patients in any setting, particularly in the emergency patient when clinical history may be lacking. Cinematic rendering (CR) is a recently developed CT post-processing technique for creating photorealistic anatomic visualization. Hybrid abdominal aortic aneurysm repairs involve the use of multiple tortuous and overlapping grafts to preserve blood flow to visceral arteries, which are difficult to adequately evaluate using standard orthogonal planes and with traditional VR techniques. Several examples of complex aortic repairs show the utility of CR for improved visualization of these structures. CR improves upon standard 3D volumetric techniques through improved depiction of the spatial relationships of anatomic structures in 3D space, permitting near life-like visualization that allows the imager to simplify the visualization of highly complex anatomy.