在猪心脏模型中使用1.0 T的磁共振成像进行体外测定心室容积。
In vitro determination of cardiac ventricular volumes using MRI at 1.0 T in a porcine heart model.
作者信息
Koch J A, Poll L W, Godehardt E, Korbmacher B, Jung G, Mödder U
机构信息
Department of Diagnostic Radiology, Heinrich-Heine-University, Düsseldorf, Germany.
出版信息
Int J Cardiovasc Imaging. 2001 Jun;17(3):237-42. doi: 10.1023/a:1010621126727.
PURPOSE
To determine the accuracy of a 1.0 T MR system with a standard gradient system for quantification of left and right ventricular volumes. A porcine heart model in vitro was used.
METHODS
In eight explanted porcine hearts the atria were removed and the aorta and the pulmonary truncus were cannulated. Defined volumes were injected into the ventricles. Magnetic resonance imaging (MRI): FFE-EPI (Multishot EPI) was used. Papillary muscles and trabeculae were excluded. True volumes and MR measurements were analysed separately for both ventricles and by both investigators.
RESULTS
The correlation of the true volumes and MR measurements was >0.99. MRI was found to be investigator independent in assessing right and left ventricular volumes in vitro.
CONCLUSIONS
MRI at 1.0 T using standard equipment can be used to quantitate cardiac ventricular volumes in vitro with high accuracy.
目的
使用标准梯度系统的1.0 T磁共振（MR）系统测定左、右心室容积的准确性。采用体外猪心模型。
方法
在8个离体猪心中，切除心房，插管至主动脉和肺动脉干。向心室内注入确定的容积。磁共振成像（MRI）：采用FFE-EPI（多次激发EPI）。排除乳头肌和小梁。两位研究者分别对两个心室的真实容积和MR测量值进行分析。
结果
真实容积与MR测量值的相关性>0.99。发现在体外评估右心室和左心室容积时，MRI与研究者无关。
结论
使用标准设备的1.0 T MRI可用于体外高精度定量测定心室容积。
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