使用锥形束计算机断层扫描记录自然头位。
Recording Natural Head Position Using Cone Beam Computerized Tomography.
机构信息
Department of Computer Science, Chu Hai College of Higher Education, Tuen Mun, Hong Kong, China.
Faculty of Dentistry, The University of Hong Kong, Pokfulam, Hong Kong, China.
出版信息
Sensors (Basel). 2021 Dec 8;21(24):8189. doi: 10.3390/s21248189.
The purpose of this study was to develop a technique to record the natural head position (NHP) of a subject using the scout images of cone beam computerized tomography (CBCT) scans. The first step was to align a hanging mirror with the vertical (XY) plane of the CBCT field-of-view (FOV) volume. Then, two scout CBCT images, at frontal and at sagittal planes, were taken when the subject exhibited a NHP. A normal CBCT scan on the subject was then taken separately. These scout images were used to correct the orientation of the normal CBCT scan. A phantom head was used for validation and performance analysis of the proposed method. It was found that the orientation detection error was within 0.88°. This enables easy and economic NHP recording for CBCT without additional hardware.
本研究旨在开发一种使用锥形束计算机断层扫描（CBCT）扫描的定位像记录受试者自然头位（NHP）的技术。第一步是将悬挂镜与 CBCT 视场（FOV）体积的垂直（XY）平面对齐。然后，当受试者呈现 NHP 时，拍摄正面和矢状面的两个定位像 CBCT 图像。然后单独对受试者进行常规 CBCT 扫描。这些定位像用于校正常规 CBCT 扫描的方向。使用一个头颅模型对头影进行验证和方法性能分析。结果发现，方向检测误差在 0.88°以内。这使得无需额外硬件即可轻松、经济地对 CBCT 进行 NHP 记录。
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