The Intervention Centre, Oslo University Hospital, Rikshospitalet, Sognsvannsvn 20, Oslo, Norway.
Clinic for Pediatric Cardiology, Oslo University Hospital, Rikshospitalet, Sognsvannsvn 20, Oslo, Norway.
Eur Heart J Cardiovasc Imaging. 2019 Aug 1;20(8):883-888. doi: 10.1093/ehjci/jey184.
Proof of concept and feasibility study for preoperative diagnostic use of mixed reality (MR) holograms of individual 3D heart models from standard cardiac computed tomography angiograms (CTA) images. Optimal repair for complex congenital heart disease poses high demands on 3D anatomical imagination. Three-dimensional printed heart models are increasingly used for improved morphological understanding during surgical and interventional planning. Holograms are a dynamic and interactive alternative, probably with wider applications.
A 3D heart model was segmented from CTA images in a patient with double outlet right ventricle and transposition of the great arteries (DORV-TGA). The hologram was visualized in the wearable MR platform HoloLens® for 36 paediatric heart team members who filled out a diagnostic and quality rating questionnaire. Morphological and diagnostic output from the hologram was assessed and the 3D experience was evaluated. Locally developed app tools such as hologram rotation, scaling, and cutting were rated. Anatomy identification and diagnostic output was high as well as rating of 3D experience. Younger and female users rated the app tools higher.
This preliminary study demonstrates that MR holograms as surgical planning tool for congenital heart disease may have a high diagnostic value and contribute to understanding complex morphology. The first users experience of the hologram presentation was found to be very positive, with a preference among the female and the younger users. There is potential for improvement of the hologram manipulation tools.
使用标准心脏 CT 血管造影（CTA）图像中的个体 3D 心脏模型的混合现实（MR）全息图对术前诊断进行概念验证和可行性研究。为复杂的先天性心脏病进行最佳修复对 3D 解剖想象力提出了很高的要求。越来越多的三维打印心脏模型用于提高手术和介入计划过程中的形态学理解。全息图是一种动态和交互的替代方法，可能具有更广泛的应用。
从右心室双出口伴大动脉转位（DORV-TGA）患者的 CTA 图像中分割出 3D 心脏模型。将全息图可视化在可穿戴的 MR 平台 HoloLens®上，36 名儿科心脏团队成员填写了诊断和质量评分问卷。评估了全息图的形态学和诊断输出，并评估了 3D 体验。评估了本地开发的应用程序工具，如全息图旋转、缩放和切割。全息图的解剖识别和诊断输出以及 3D 体验的评分都很高。年轻和女性用户对应用程序工具的评价更高。
这项初步研究表明，MR 全息图作为先天性心脏病的手术规划工具可能具有很高的诊断价值，并有助于理解复杂的形态。第一批用户对全息图演示的体验非常积极，女性和年轻用户更喜欢使用全息图。全息图操作工具具有改进的潜力。
