Related Experiment Video
Updated: May 29, 2026
Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging
Published on: December 9, 2021
Bending the curve: preoperative determination of bypass graft length and trajectory with curved planar reformatted
Jeffrey C Markham1, Christopher S Eddleman, David Uhrbrock
1Department of Radiology , UT Southwestern Medical Center, Dallas, Texas 75390, USA.
Insights
Curved planar reformation of CT angiography offers a novel, cost-effective method for planning cerebral revascularization. This technique precisely determines bypass graft length and recipient vessel suitability, enhancing surgical outcomes.
Area of Science:
- Neurosurgery
- Radiology
- Vascular Surgery
Background:
- Cerebral revascularization is crucial for cerebrovascular and vaso-occlusive diseases.
- Accurate graft selection and length are vital for successful, tension-free anastomosis.
- Computed tomography (CT) angiography aids in evaluating graft paths and recipient vessels.
Observation:
- A patient with left hemispheric deficit required high-flow cerebral revascularization.
- A radial artery graft from the vertebral artery to the middle cerebral artery was planned.
- Preoperative CT angiography was used to determine optimal graft length and placement.
Findings:
- Curved planar reformation (CPR) of CT angiography data enables precise graft length and path determination.
- CPR facilitates efficient evaluation of suitable recipient vessels for cerebral bypass.
- This technique offers a novel, inexpensive, and efficient preoperative planning solution.
Implications:
- CPR can improve the accuracy and success rates of cerebral bypass surgeries.
- This method enhances preoperative planning for complex neurovascular procedures.
- It provides a valuable tool for surgeons performing cerebral revascularization.
Background And Importance:
Cerebral revascularization continues to be an important technique for the treatment of cerebrovascular and vaso-occlusive diseases, and determination of appropriate graft sources and recipients is paramount to the success of the procedure. A tension-free anastomosis requires that harvested grafts be of an appropriate length to avoid complications. Volume-rendered contrast-enhanced computed tomography data sets may be useful in determining the desired length and path of the bypass graft and in the evaluation of appropriate recipient vessels. Curved planar reformation techniques may allow these properties to be determined in a novel, inexpensive, and efficient manner.
Clinical Presentation:
A 63-year-old patient with a left hemispheric perfusion deficit and without an external carotid artery was in need of high-flow cerebral revascularization. A radial artery graft spanning from the vertebral artery to the middle cerebral artery was proposed. Preoperative determination of graft length necessary and most efficient subcutaneous placement was desired. A standard computed tomography angiogram of the head and neck was obtained and imported into a computer workstation with curved planar reformatting capabilities.
Conclusion:
Curved planar reformation technique can be used for preoperative planning of cerebral bypass procedures and is a novel, inexpensive, and efficient means of determining the desired length and path of the bypass graft and in the evaluation of appropriate recipient vessels.
