Monolithic U-shaped crystal design for TOF-DOI detectors: a flat top versus a tapered top.

• Tác giả: Han Gyu Kang, Miho Kiyokawa, Taiga Yamaya
• Ngôn ngữ: eng
• Ký hiệu phân loại: 004.2 Systems analysis and design, computer architecture, performance evaluation
• Thông tin xuất bản: England : Biomedical physics & engineering express , 2025
• Bộ sưu tập: NCBI
• ID: 54410

Tóm tắt

For brain-dedicated positron emission tomography (PET) scanners, depth-of-interaction (DOI) information is essential to achieve uniform spatial resolution across the field-of-view (FOV) by minimizing parallax error. Time-of-flight (TOF) information can enhance the image quality. In this study, we proposed a novel monolithic U-shaped crystal design that had a tapered geometry to achieve good coincidence timing resolution (CTR) and DOI resolution simultaneously. We compared a novel tapered U-shaped crystal design with a conventional flat-top geometry for PET detectors. Each crystal had outer dimensions of 5.85 × 2.75 × 15 mm