Development of a motion detecting system for respiratory-gated PET using laser optical displacement sensor
Development of a motion detecting system for respiratory-gated PET using laser optical displacement sensor
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使用激光光学位移传感器开发呼吸门控 PET 运动检测系统
DOI：
10.1109/nssmic.2003.1352255
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
Byung‐Tae Kim
中科院分区：
文献类型：
--
作者：
S. Woo;T. Song;Joon Yong Choi;K. Hong;Yong Choi;Kyung;Byung‐Tae Kim
全身成像期间的呼吸运动已被认为是图像退化的来源，并在正电子发射断层扫描（PET）研究中引起失真。本研究的目的是利用肺模拟器评估呼吸运动，并开发一种使用光学激光传感器的呼吸运动检测系统。我们利用市售的激光光学传感器来检测PET扫描期间的呼吸运动。每个呼吸周期被分成4个区间，定义为患者呼吸运动内的平均峰值间隔和不规则峰值。时间仓内的采集数据对应于呼吸周期内的不同位置，并被存储用于运动后校正。用体模研究评价呼吸运动的稳定性。在人体图像中，由于呼吸运动引起的模糊伪影被我们的检测系统分割。该技术改善了被呼吸运动扭曲的示踪剂的定量比活度。
A respiratory motion during whole-body imaging has been recognized as a source of image degradation and induces distortions in positron emission tomography (PET) study. The aim of this study is to evaluate respiratory motion using lung simulator and to develop a respiratory motion detecting system using optical laser sensor. We utilized a commercially available laser optical sensor to detect respiratory motion during PET scanning. Each respiratory cycle is divided into 4 bins defined as average peak interval and irregular peak within the patient's breathing motion. The acquired data within the time bins correspond to different positions within the breathing cycle and stored for the post motion correction. Artifact of breathing motion was evaluated with the phantom study. In the images of a human subject, the blurring artifact due to breathing motion was divided by our detecting system. This technique improves the quantitative specific activity of the tracer which is distorted by the respiratory motion.