Augmented reality guidance in cerebrovascular surgery using microscopic video enhancement

Healthcare Technology Letters

article

Reid Vassallo¹  Hidetoshi Kasuya³  Benjamin W.Y. Lo⁴  Terry Peters¹  Yiming Xiao² 

[1] School of Biomedical Engineering, Western University;Robarts Research Institute, Western University;Department of Neurosurgery, Tokyo Women's Medical University Medical Centre East;Montreal Neurological Hospital

关键词: biomedical ultrasonics;    spectral analysis;    medical image processing;    neurophysiology;    blood vessels;    blood;    brain;    augmented reality;    surgery;    image enhancement;    video signal processing;    image motion analysis;    AVM;    aneurysm;    augmented reality guidance;    cerebrovascular surgery;    microscopic video enhancement;    vessel abnormalities;    brain;    spinal cord;    arteriovenous malformations;    accurate classification;    blood vessel types;    intraoperative identification;    injected dyes;    Doppler ultrasound;    spectral analysis;    surgical microscopic view;    preoperative images;    motion magnification;   

DOI  :  10.1049/htl.2018.5069

学科分类：肠胃与肝脏病学

来源: Wiley

【 摘 要 】

Cerebrovascular surgery treats vessel abnormalities in the brain and spinal cord, including arteriovenous malformations (AVMs) and aneurysms. These procedures often involve clipping the vessels feeding blood to these abnormalities, making accurate classification of blood vessel types (feeding versus draining) important during surgery. Previous work to guide the intraoperative identification of the vessels included augmented reality (AR) using pre-operative images, injected dyes, and Doppler ultrasound, but each with their drawbacks. The authors propose and demonstrate a novel technique to help differentiate vessels by enhancing short videos of a few seconds from the surgical microscope using motion magnification and spectral analysis, and constructing AR views that fuse the analysis results as intuitive colourmaps and the surgical microscopic view. They demonstrated the proposed technique retrospectively with two real cerebrovascular surgical cases: one AVM and one aneurysm. The results showed that the proposed technique can help characterise different vessel types (feeding and draining the abnormality), which agree with those identified by the operating surgeon.

【 授权许可】

CC BY|CC BY-ND|CC BY-NC|CC BY-NC-ND