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Applicability of a single camera-based catheter navigation system using teeth arch as an anatomical landmark for superselective intraarterial infusion in advanced oral cancer treatment
Medical & Biological Engineering & Computing ( IF 3.2 ) Pub Date : 2021-02-16 , DOI: 10.1007/s11517-021-02326-w
Ken Yanagida 1 , Takashi Ohya 1 , Junchen Wang 2, 3 , Toshinori Iwai 1 , Toshiharu Izumi 4 , Etsuko Kobayashi 2 , Ichiro Sakuma 2 , Kenji Mitsudo 1
Affiliation  

Superselective intraarterial infusion chemoradiotherapy is a modality of oral cancer therapy in which the artery feeding the tumor is catheterized. 3D information about the carotid artery is required to enable the surgeon to judge whether to advance, retract, or rotate the catheter. For this purpose, we proposed and conducted a model experiment to assess a new method of catheterization that applies a tracking system using registration with a monocular camera using the maxillary arch as the anatomical landmark. In this method, the preoperative 3D computer tomography angiographic image of the carotid artery that the catheter will be passed through is overlaid on the 2D video image. The mean TRE was 0.96 ± 0.36 mm and 0.88 ± 0.31 mm and 1.12 ± 0.46 mm when images were registered with the anterior and posterior teeth as the landmarks, respectively; the difference was not significant (p = 0.21). This tracking system that enables markerless registration simply by taking images of the maxillary anterior teeth with a single camera was convenient and effective for catheterization. In this study, we propose the new application of this tracking system and a novel method of catheterization for superselective intraarterial infusion chemoradiotherapy for oral cancer.

Graphical abstract



中文翻译:

使用牙弓作为解剖标志的基于单摄像头的导管导航系统在晚期口腔癌治疗中进行超选择性动脉内输注的适用性

超选择性动脉内灌注放化疗是口腔癌治疗的一种方式,其中导管插入肿瘤供血动脉。需要有关颈动脉的 3D 信息,以使外科医生能够判断是否推进、缩回或旋转导管。为此,我们提出并进行了一个模型实验,以评估一种新的导管插入方法,该方法应用跟踪系统,该方法使用单目相机进行配准,使用上颌弓作为解剖标志。在这种方法中,导管将穿过的颈动脉的术前 3D 计算机断层扫描血管造影图像叠加在 2D 视频图像上。当图像以前牙和后牙为界标时,平均 TRE 分别为 0.96 ± 0.36 mm 和 0.88 ± 0.31 mm 和 1.12 ± 0.46 mm;p  = 0.21)。这种跟踪系统只需使用单个摄像头拍摄上颌前牙的图像即可实现无标记配准,对于导管插入术而言既方便又有效。在这项研究中,我们提出了这种跟踪系统的新应用和一种新的导管插入方法,用于口腔癌的超选择性动脉内灌注放化疗。

图形概要

更新日期:2021-02-17
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