2021年6月16日 · Using a conventional PET scanner, a whole-body scan is acquired by moving the patient bed through the gantry. This is needed because of the limited axial field of view (FOV) of 15 to 25 cm of conventional scanners.

2020年3月26日 · 最大的好处就是通过简单的物理性增加轴向视野 (FOV)，进而直接获得更高灵敏度。 因为以往影响PET灵敏度的最大因素有两个：覆盖和噪声。 在同一时间只有差不多1/8的部位在扫描视野中，大量信号没有对成像产生贡献，被浪费掉了；于此同时，真正对成像能够产生贡献的信号，却只有最多3%-5%被采集到了，最可惜的是它们大幅度受到衰减和散射的影响，变成了各种的噪声，尤其是在临床计数条件下【3】。 这两个问题，第二个需要从晶体探测器技术本身 …

2025年2月1日 · LAFOV PET is significantly more sensitive than conventional SAFOV PET and allows simultaneous acquisition of data from most or all body systems. LAFOV PET reduces scan acquisition time, administered activity of radiopharmaceutical and improves scan quality.

2025年1月1日 · Total-body (TB) positron emission tomography (PET) scanners are classified by their axial field of view (FOV). Long axial field of view (LAFOV) PET scanners can capture images from eyes to thighs in a one-bed position, covering all …

2013年6月21日 · The aim of this study is to understand the trade-off between crystal thickness and scanner axial field-of-view FOV (AFOV) for clinical PET imaging. Clinical scanner design has evolved towards 20-25 mm thick crystals and 16-22 cm long scanner AFOV, as well as time-of-flight (TOF) imaging.

2023年12月2日 · Short-axial field-of-view (SAFOV) PET-scanner: any scanner that needs more than one bed position to scan most of the population from vertex to thighs. Long-axial field-of-view (LAFOV) PET-scanner: any scanner that can image vertex to thighs in most of the population in a single-bed position

Many of these advances in scanner technology directly impacted the design of recently developed long (≥70 cm) axial field-of-view (AFOV) PET scanners. In this chapter, we will discuss aspects of scanner design of long AFOV systems and how these choices affect system performance.

The introduction of long (>60 cm) axial field-of-view (LAFOV) PET systems has shown their potential for clinical and research applications. LAFOV scanners are expensive, so there is interest in designing systems with longer axial coverage while ...

Nowadays, the newest generation of commercially available PET-CT scanners provides a long axial field of view (LAFOV), ranging approximately between 1 and 2 m, and offers several advantages as compared with the older scanners with a more limited FOV of about 15–25 cm, enabling, apart from the achievement of larger anatomical coverage, an ...

为了满足这些需求，我们开发了一种新的高分辨率、大 FOV 小动物 PET，即 Mirai-PET。 该设备最突出的特点是十字线光共享探测器；长度为 15 毫米的快速 LGSO 晶体以 1.6 毫米的间距排列，并且相互作用深度信息被解码为三层。