medric medric
[닫기]
잠시만 기다려 주세요. 로딩중입니다.

Electromagnetic tracking-based ultrasound/computed tomography fusion imaging in dogs: preliminary application to ocular and periocular regions

Journal of Veterinary Science 2019년 20권 5호 p.51 ~ 51
 ( Choi Ji-Hye ) - Chonnam National University College of Veterinary Medicine Department of Veterinary Medical Imaging

 ( Lee Sang-Kwon ) - Chonnam National University College of Veterinary Medicine Department of Veterinary Medical Imaging
 ( Park Seung-Jo ) - Chonnam National University College of Veterinary Medicine Department of Veterinary Medical Imaging

Abstract


In ultrasound/computed tomography (CT) fusion images, ultrasound allows visualization of the target in real time. CT provides a navigation for ultrasound scanning and improves the overview in areas of limited visualization with ultrasound. This study was performed to investigate the feasibility of ultrasound/CT fusion based on an electromagnetic tracking technique using external fiducial markers for canine ocular and periocular regions. In 7 Beagle dogs, contrast-enhanced CT images of the head were obtained with placing external fiducial markers over the frontal region and both sides of the forepaws of the dog. Ultrasonography was performed under a magnetic field by installing a position sensor in the linear probe, without changing the dog's position. The positions of the external fiducial markers were adjusted and matched, based on the CT images. The execution time of co-registration and the distance between the regions of interest and the co-registration points, the frontal bone, cornea, retina, and optic nerve, were estimated. Approximately 60% of external fiducial markers were properly recognized in all dogs. After adjustment, all external fiducial markers were precisely matched. The co-registration execution time was less than 1 min. The distances between the regions of interest and co-registration points were less than 3 mm in all dogs. The electromagnetic tracking technique using external fiducial markers was a simple and applicable method for fusion imaging of a canine head using real-time ultrasonography and CT. This technique can be useful for interventional procedures of retrobulbar and periorbital lesions.

키워드

Co-registration; electromagnetic tracking technique; external fiducial markers; ocular and periocular; ultrasound/CT fusion
원문 및 링크아웃 정보
   
등재저널 정보