Development of Sensitivity-Enhanced Detector using Pixelization of Block Scintillator with 3D Laser Engraving

• 영문명: Development of Sensitivity-Enhanced Detector using Pixelization of Block Scintillator with 3D Laser Engraving
• 발행기관: 한국방사선학회
• 저자명: Seung-Jae Lee Cheol-Ha Baek
• 간행물 정보: 『한국방사선학회 논문지』 제13권 제2호, 313~318쪽, 전체 6쪽
• 주제분류: 공학 > 기타공학
• 파일형태: PDF
• 발행일자: 2019.04.30

영문 초록

To improve the sensitivity, a detector using a block scintillator was developed. In the pixelated scintillator, a reflector is located between pixels to move the light generated from the scintillator to the photosensor as much as possible, and sensitivity loss occurs in the reflector portion. In order to improve the sensitivity and to have the characteristics of the pixelated scintillator, the block scintillator was processed into a scintillator in pixel form through three-dimensional laser engraving. The energy spectra and energy resolution of each pixel were measured, and sensitivity analysis of block and pixel scintillator was performed through GATE simulation. The measured global energy resolution was 20.7%, and the sensitivity was 18.5% higher than that of the pixel scintillator. When this detector is applied to imaging devices such as gamma camera and positron emission tomography, it will be possible to shorten the imaging time and reduce the dose of patient by using less radiation source.

목차

Ⅰ . INTRODUCTION

Ⅱ. MATERIAL AND METHODS

Ⅲ. RESULT

Ⅳ. DISCUSSION

Ⅴ. CONCLUSION

키워드

Block scintillator sensitivity three-dimensional laser engraving pixelated scintillator