Effect of the rate of gadolinium injection on magnetic resonance pulmonary perfusion imaging

被引：21

作者：

Matsuoka, S ^{[1
]}

Uchiyama, K ^{[1
]}

Shima, H ^{[1
]}

Terakoshi, H ^{[1
]}

Oishi, S ^{[1
]}

Nojiri, Y ^{[1
]}

Ogata, H ^{[1
]}

机构：

[1] Teikyo Univ, Sch Med, Ichihara Hosp, Dept Radiol, Chiba 2990111, Japan

来源：

JOURNAL OF MAGNETIC RESONANCE IMAGING | 2002年 / 15卷 / 01期

关键词：

pulmonary; lung perfusion; magnetic resonance imaging (MRI); contrast agent injection rate; pulmonary circulation;

D O I：

10.1002/jmri.10038

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

Purpose: To determine whether the injection rate of contrast agent affects the dynamics of enhancement of the pulmonary parenchyma on magnetic resonance (MR) pulmonary perfusion imaging. Materials and Methods: Fifteen healthy volunteers underwent enhanced MR pulmonary perfusion imaging, to evaluate the effects of different injection rates. Injection rates were 1, 3, or 5 mL/second. Regions of interest (ROIs) were chosen in the lung and aorta to analyze the change in signal intensity over time. Results: As the injection rate increased, the peak enhancement occurred significantly earlier (P = 0.0012), but the peak enhancement signal-to-noise ratio (SNR) value was not affected (P = 0.25). With the 3- and 5-mL/second injection rates, images of both the pulmonary circulation and systemic circulation were obtained separately. However, with 1 mL/second, higher enhancement of the aorta was overlapped with peak enhancement of the lung tissue. Conclusion: The injection rate affects the enhancement profiles of the pulmonary parenchyma.

引用

页码：108 / 113

页数：6