Clinical evaluation of a breathing protocol for PET/CT
Clinical evaluation of a breathing protocol for PET/CT
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DOI：
10.1007/s00330-003-2174-3
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发表时间：
2004-06-01
影响因子：
5.9
通讯作者：
Goerres, GW
中科院分区：
文献类型：
--
作者：
de Juan, R;Seifert, B;Goerres, GW
本研究的目的是评估在修改CT扫描的呼吸方案之前和之后，在联合PET/CT扫描仪上采集的共配准正电子发射断层扫描/计算机断层扫描（PET/CT）图像上呼吸诱导的曲线呼吸伪影（RICA）的频率和严重程度，回顾性分析了两组100例患者，在执行呼吸协议之前和之后，在正常呼气位置屏气（BH）以采集CT图像。CT数据被用作衰减图和图像配准。由两名观察员一致使用0 - 3的量表对共配准PET/CT和PET图像（包括最大强度投影）进行评级。0表示RICA不可见，1、2和3描述了严重程度增加的伪影。两组RICA发生率有显著性差异（p
The aim of this study was to assess the frequency and severity of respiration-induced curvilinear respiration artifacts (RICA) on co-registered positron emission tomography/computed tomography (PET/CT) images acquired on a combined PET/CT scanner before and after modifying the respiration protocol for CT scanning, with retrospective analysis of two groups of 100 patients each, before and after implementing a respiration protocol with breath-hold (BH) in the normal expiration position for the acquisition of the CT images. The CT data were used as attenuation map and for image co-registration. A ranking of co-registered PET/CT and PET images (including maximum intensity projection) was done by two observers in consensus using a scale from 0 to 3. Zero indicated that no RICA was visible and 1, 2, and 3 described artifact with increasing severity. A significant difference in RICA occurrence was found between the two groups (p