Title Page
Abstract
Contents
I. INTRODUCTION 10
II. MATERIALS AND METHODS 13
A. Patients and simulation 13
B. MVCT scanning and image-registration process 14
C. Data correction and analysis 15
III. RESULTS AND DISCUSSION 18
IV. CONCLUSIONS 27
REFERENCES 28
국문요약 31
Table 1. Patient characteristics of the five groups in this study. 14
Table 2. Average and standard deviation of systematic errors (σ) for the translational directions (㎜) between different image-registration components of the five groups. 19
Table 3. Average and standard deviation of systematic errors (σ) for the rotational angles (˚) between different image-registration components of the five groups (one-way ANOVA). 21
Table 4. Overall (Μ) of translational directions (㎜) and rotational angles (˚) between different image-registration components of the five groups. 22
Figure 1. View of the TomoTherapy operation station to check for translational and rotational set-up errors. Left figure shows the kVCT (gray color) and MVCT (green color) in a head-and-neck patient. 15
Figure 2. View of the overall automatic rigid image-registration process of data collection and analysis. 17
Figure 3. Overall mean values (Μ) of translational directions (㎜) between different image-registration components of the five groups. 23
Figure 4. Overall mean values (Μ) of rotational angles (˚) between different image-registration components of the five groups. 24