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자기공명영상을 이용한 두개부내 표적의 3차원적 위치결정

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Author(s)
최태진김옥배주양구서수지손은익
Keimyung Author(s)
Choi, Tae JinJoo, Yang GuSuh, Soo JhiSon, Eun Ik
Department
Dept. of Radiation Oncology (방사선종양학)
Dept. of Radiology (영상의학)
Dept. of Neurosurgery (신경외과학)
Journal Title
의학물리
Issued Date
1996
Volume
7
Issue
2
Abstract
Purpose: To get a 3-D coordinates of intracranial target position was investicated in axial, sagittal and coronal magnetic resonance imaging with a preliminary experimented target localizer. Material and methods : In preliminal experiments, the localizer is made of engineering plastic to avoid the distrubance of magnetic field during the MR image scan. The MR localizer displayed the 9 points in three different axial tomogram. The bright signal of localizer was obtjained from 0.1~0.3% of paramagnetic gadolinium/DTPA solution in T1WI or T2WI. In this study, the 3-D position of virtual targets were examined from three different axial MR images and the streotactic position was compared to that of BRW stereotactic system in CT scan with same targets. Results: This study provided the actual target position could be obtained from single scan with MRI localizer which has inverse N-typed 9 bars. This experiment was accomplished with shimming test for detection of image distortion in MR image. However we have not found the image distortion in axial scan. The maximum error of target positions showed 1.0 mm in axial, 1.3 mm for sagittal and 1.7 mm for coronal image, respectivelly. The target localization in MR localizer was investicated with spherical virtual target in skull cadaver. Furthermore, the target position was confirmed with CRW stereotactic system showed a 1.3 mm in discrepancy. Summary : The intracranial target position was determined within 1.7 mm of discrepancy with designed MR localizer. We found the target position from axial image has more small discrepancy than that of sagittal and coronal image.
Alternative Title
Determination of Stereotactic Target Position with MR Localizer
Keimyung Author(s)(Kor)
최태진
주양구
서수지
손은익
Publisher
School of Medicine
Citation
최태진 et al. (1996). 자기공명영상을 이용한 두개부내 표적의 3차원적 위치결정. 의학물리, 7(2), 67–77.
Type
Article
ISSN
1226-5829
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/36839
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Neurosurgery (신경외과학)
1. School of Medicine (의과대학) > Dept. of Radiation Oncology (방사선종양학)
1. School of Medicine (의과대학) > Dept. of Radiology (영상의학)
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