Application of DSA volumetric imaging technology in achieving high-precision visualization of stents in neurointerventional treatment
CHEN Ying-chun
FENG Juan-juan
FANG Yan
SHENG Liu-qing
YE Jian-feng
BIE Bi-zhou
WANG Zhi-zhong
ZHANG Qing
WANG Sheng-bo
LI Jun
Abstract：Objective To investigate the application efficacy of DSA volumetric imaging technology in achieving high-precision visualization of stents during neurointerventional treatment.Methods A retrospective analysis was performed on the clinical data of 68 patients with cerebrovascular diseases who underwent stent implantation from April 2021 to June 2022.During or after the complete release of the stents,DSA volumetric imaging technology was employed for small-field scanning,and post-processing such as metal artifact removal and three-dimensional reconstruction were conducted on the images to evaluate the visualization effect of the stents and their post-release status.The specific evaluation criteria were as follows:clear display of the fine structure of the stent was rated as excellent in visualization effect;clear identification of the stent contour but not the fine structure was rated as good in visualization effect;inability to clearly identify the stent contour was rated as poor in visualization effect.The visualization results were fed back to the neurosurgeons to facilitate the adjustment and improvement of the stent treatment methods.Results A total of 71 stents were utilized,including 48 Enterprise stents,1 Neuroform EZ stent,8 Neuroform Atlas stents,5 Lvis stents,1 Leo stent,and 8 Tubridge stents.Among them,55 stents had excellent visualization effects,12 had good visualization effects,and 4 had poor visualization effects,with an excellent and good rate of 94.4%.DSA volumetric imaging could clearly display the fine structures of Enterprise,Neuroform EZ,Neuroform Atlas,Lvis,and Leo stents.However,due to the fine mesh and mutual interference of the braided wires of the Tubridge stent,its fine mesh structure could not be clearly displayed,but the reconstruction effect of its metal wires was favorable,and the entire contour of the stent could be clearly displayed.The main factor contributing to the poor fine visualization of the stent was the metal artifact of the coils.Conclusion When using stents to treat cerebrovascular diseases,DSA volumetric imaging technology can precisely determine the states such as opening,wall-adhering,and folding of the stents after implantation,and has a favorable display effect on low-visibility stents.It serves as an important basis for evaluating the treatment effect.
Keywords：Cerebrovascular diseaseInterventional therapyDSA volumetric imagingFine stent visualization
Publication Date：2024-11-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 646-649 )