Naka Takanori, Kaneko Marika, Hori Hiroki, Minami Hiroaki
Department of Radiology, Kawasaki Saiwai Hospital.
FUS Center, Moriyama Cranial Nerves Center Hospital.
Nihon Hoshasen Gijutsu Gakkai Zasshi. 2022 Dec 20;78(12):1445-1450. doi: 10.6009/jjrt.2022-1266. Epub 2022 Nov 8.
In recent years, gadolinium ethoxybenzyl diethylenetriamine pantaacetic acid (Gd-EOB-DTPA) has been commonly used in magnetic resonance imaging (MRI) for liver contrast studies. The purpose of this study was to investigate the effect of Hyper SENSE factor on contrast in the Gd-EOB-DTPA hepatocyte phase. The subjects were 21 patients [16 males and 5 females, aged 50-94 years (mean age 68±12years)] who underwent hepatic contrast-enhanced MRI with Gd-EOB-DTPA from March 2021 to December 2021. The contrast ratios (CRs) of liver/spleen and liver/tumor were measured when the Hyper SENSE factor was changed to 1.0, 1.4 and 1.8. As a result, there was no statistically significant difference in signal intensity and CR with the change in the Hyper SENSE factor. In this study, the acquisition time can be shortened without decreasing the CR; therefore, it was suggested to improve MR images to avoid motion artifact.
近年来，钆塞酸二钠（Gd-EOB-DTPA）已普遍用于肝脏对比研究的磁共振成像（MRI）。本研究的目的是探讨高灵敏度因子对Gd-EOB-DTPA肝细胞期对比度的影响。研究对象为2021年3月至2021年12月期间接受Gd-EOB-DTPA肝脏增强MRI检查的21例患者[16例男性和5例女性，年龄50 - 94岁（平均年龄68±12岁）]。当高灵敏度因子分别变为1.0、1.4和1.8时，测量肝脏/脾脏和肝脏/肿瘤的对比率（CR）。结果，随着高灵敏度因子的变化，信号强度和CR没有统计学上的显著差异。在本研究中，在不降低CR的情况下可以缩短采集时间；因此，建议改善磁共振图像以避免运动伪影。
