Stomach frame-count-based attenuation correction of dynamic posterior view gastric emptying scintigraphy with continuous acquisition in children.
Stomach frame-count-based attenuation correction of dynamic posterior view gastric emptying scintigraphy with continuous acquisition in children.
复制标题
基于胃帧计数的儿童连续采集动态后视胃排空闪烁扫描的衰减校正。
DOI：
10.1007/s00247-017-3917-7
复制
发表时间：
2017
影响因子：
2.3
通讯作者：
Fahey,FredericH
中科院分区：
文献类型：
--
作者：
Cao,Xinhua;Xu,Xiaoyin;Drubach,Laura;Fahey,FredericH
背景在对儿童进行连续采集动态胃排空造影时，一个单一的后视图采集是首选，因为它允许年轻患者更容易与父母或技术人员互动，即使这种方法往往高估胃排空。方法：建立了一种基于帧计数的后视图胃排空造影术（AC），并对AC的测量结果进行了分析（后AC法）。我们回顾性分析了122项使用前后结合视图对儿童进行的胃排空研究，并评估了仅后验和后验之间的统计学差异以几何平均值法为参考标准，比较后验AC（无AC）和后验AC的残差值。（P=0.813）与使用几何平均值的值相比，而仅使用后验的值有显著差异（P<0.001）。结论该方法可以取代几何平均值法来估计胃排空残余分数。友好的后视图，在连续采集的1小时胃排空造影中无显著差异。
BackgroundWhen performing dynamic gastric emptying scintigraphy with continuous acquisition in children, a single posterior view acquisition is preferred because it allows the young patient to more easily interact with a parent or technologist even though this method tends toward overestimating gastric emptying.ObjectivesThe objective of our study was to develop a new attenuation correction (AC) method to improve the accuracy of the time activity curve and the measurement of residual gastric emptying from 1-h posterior images of gastric emptying scintigraphy with continuous acquisition.Materials and methodsWe developed a frame-count-based AC for gastric emptying scintigraphy from the posterior view (posterior AC method). We retrospectively reviewed 122 gastric emptying studies performed in children using conjugated posterior and anterior views, and evaluated the statistical differences between posterior only (without AC) and posterior AC using the geometric mean method as a reference standard.ResultsThe residual values obtained using posterior AC were not significantly different (P=0.813) compared to those using the geometric mean while the values using the posterior only were significantly different (P<0.001) from the geometric mean.ConclusionThe proposed method can replace the geometric mean method to estimate gastric emptying residual fraction using patient-friendly posterior view without a significant difference in 1-h gastric emptying scintigraphy with continuous acquisition.