Quantification of left ventricular function with magnetic resonance images acquired in real time

Autor:	R M, Setser, S E, Fischer, C H, Lorenz
Rok vydání:	2000
Předmět:	Adult Fourier Analysis Echo-Planar Imaging Systole Cardiac Volume Magnetic Resonance Imaging Cine Reproducibility of Results Stroke Volume Image Enhancement Sensitivity and Specificity Ventricular Function Left Electrocardiography Computer Systems Image Processing Computer-Assisted Humans
Zdroj:	Journal of magnetic resonance imaging : JMRI. 12(3)
ISSN:	1053-1807
Popis:	The application of real-time magnetic resonance imaging (MRI) techniques to cardiac imaging is particularly attractive because current MR examinations of left ventricular (LV) function can be prohibitively long and are dependent on electrocardiographic triggering. We conducted a study of the minimum spatial and temporal resolution requirements necessary for real-time ventricular function MR imaging to quantify LV volumes accurately, both at resting conditions and during cardiac stress tests. In addition, we implemented a real-time segmented echoplanar imaging pulse sequence and used it to quantify LV volume in 10 healthy volunteers. We compared these results with those obtained using conventional gradient-echo cine imaging and found good agreement throughout the cardiac cycle (mean difference -0.8 +/- 10.6 ml). In conclusion, real-time cardiac MR imaging can be used to quantify LV volumes accurately throughout the cardiac cycle, over the physiologic range of heart rates, thereby decreasing the time required for a complete functional cardiac examination. J. Magn. Reson. Imaging 2000;12:430-438.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=pmid________::e74ad99bec6be65b3090a1d3566a743b https://pubmed.ncbi.nlm.nih.gov/10992310 Zobrazit plný text záznamu Plný text