테이블 이동간격 정확도와 위치확인 영상의 정확도 시험용 팬텀의 제작 및 유용성

Usefulness of the Test Phantom for Table Incrementation Accuracy and Scout Localization View in Computed Tomography

Purpose In quality control of computed tomography, a film or ruler is used for patient table incrementation test, and crossed large needle for scout localization view test. However, the methods using these instruments can take a low confidence level for scatter ray, careless manufacture, etc. This study is to lift confidence level and simplicity by a new made phantom. Materials & Methods A phantom to measure table incrementation accuracy and scout localization view together was made in our institute. We made a comparative analysis of results by a film, ruler for a experiment of sliding distance of patient’s table and a 18G needle for scout localization view with a new made phantom. Results In a experiment of table incrementation accuracy, the new made phantom with scale showed a more sharpness and simplicity than a method by a film or ruler. In also a experiment for scout localization view, this new phantom with X shape marker showed a more sharpness. Conclusion For experiment of patient table incrementation test and scout localization view in quality control of computed tomography, method by a standardized phantom show higher confidence level and simplicity than film or ruler, and a 18G needle.