Knott P Daniel, Maurer Calvin R, Gallivan Ryan, Roh Hwan-Jung, Citardi Martin J
Head and Neck Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA.
Otolaryngol Head Neck Surg. 2004 Nov;131(5):666-72. doi: 10.1016/j.otohns.2004.03.045.
The objective of this study was to assess registration error due to fiducial configuration for the ENT headsets for the CBYON Suite (CBYON, Mountain View, CA) and InstaTrak (GEMS Navigation and Visualization, Waukesha, WI).
Axial CT scans (1-mm slice thickness) were obtained of for 24 cadaveric heads using the CBYON headset and for 23 cadaveric heads using the GEMS headset. The CBYON and GEMS NAV software were used to calculate the fiducial registration error (FRE). Fiducial localization error (FLE) was estimated from FRE. Theoretical target registration error (TRE) was calculated at 11 targets.
The FRE for CBYON and GEMS NAV was 0.69 mm and 0.27 mm, respectively. The theoretical TRE for CBYON and GEMS NAV was 0.41 mm and 0.30 mm, respectively. The theoretical TRE was greater at targets posterior in the sinus cavities.
Theoretical TRE values for both ENT headsets are less than clinically observed TRE. Clinically observed TRE is likely due to repositioning accuracy.
B-2.
本研究的目的是评估用于CBYON Suite（CBYON，加利福尼亚州山景城）和InstaTrak（GEMS导航与可视化公司，威斯康星州沃基沙）的耳鼻喉科头戴设备因基准配置导致的配准误差。
使用CBYON头戴设备对24个尸体头部进行轴向CT扫描（层厚1毫米），使用GEMS头戴设备对23个尸体头部进行轴向CT扫描。使用CBYON和GEMS NAV软件计算基准配准误差（FRE）。从FRE估计基准定位误差（FLE）。在11个靶点处计算理论目标配准误差（TRE）。
CBYON和GEMS NAV的FRE分别为0.69毫米和0.27毫米。CBYON和GEMS NAV的理论TRE分别为0.41毫米和0.30毫米。鼻窦腔内后部靶点处的理论TRE更大。
两种耳鼻喉科头戴设备的理论TRE值均小于临床观察到的TRE。临床观察到的TRE可能归因于重新定位的准确性。
B - 2。
