Single breath-hold 3D contrast-enhanced method for assessment of cardiac function

Autor:	A V, Barger, T M, Grist, W F, Block, C A, Mistretta
Rok vydání:	2000
Předmět:	Fourier Analysis Reference Values Contrast Media Feasibility Studies Humans Gadolinium Heart Magnetic Resonance Imaging
Zdroj:	Magnetic resonance in medicine. 44(6)
ISSN:	0740-3194
Popis:	Cardiac MRI function measurements are typically performed using 2D sequences and require multiple breath-holds to image the entire heart. A single 3D acquisition using a T(1)-shortening agent has many potential advantages over techniques that acquire multiple 2D images, including more consistent contrast and precise slice coverage. However, 3D techniques currently require much longer than a single breath-hold to complete. It has been shown that for MR angiography undersampled projection reconstruction can acquire much higher resolution per unit time than Fourier imaging with acceptable artifacts. By employing a gated, undersampled projection technique, high-resolution 3D multiphase volumes of the heart can be acquired in a single breath-hold. Short repetition times result in good myocardial suppression and a temporal aperture of 60 ms.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=pmid________::5ee07a7f8ce2abdcb3f1d28a6aba836f https://pubmed.ncbi.nlm.nih.gov/11108617 Zobrazit plný text záznamu Plný text