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

• Published in: Magnetic resonance in medicine Vol. 44; no. 6; pp. 821 - 824
• Main Authors: Barger, A.V., Grist, T.M., Block, W.F., Mistretta, C.A.
• Format: Journal Article
• Language: English
• Published: New York John Wiley & Sons, Inc 01-12-2000; Williams & Wilkins
• Subjects: Biological and medical sciences; Cardiovascular system; Contrast Media; fast magnetic resonance imaging; Feasibility Studies; Fourier Analysis; Gadolinium; Heart - anatomy & histology; Heart - physiology; Humans; Investigative techniques, diagnostic techniques (general aspects); Magnetic Resonance Imaging - instrumentation; Magnetic Resonance Imaging - methods; Magnetic Resonance Imaging - statistics & numerical data; Medical sciences; MR cardiac imaging; projection reconstruction; Radiodiagnosis. Nmr imagery. Nmr spectrometry; Reference Values; Human; Evaluation; Cardiac performance; High resolution; Rapid technique; Apnea; 3D imaging; Image processing; Artefact; Technique; Nuclear magnetic resonance imaging; Image reconstruction
• ISSN: 0740-3194; 1522-2594
• DOI: 10.1002/1522-2594(200012)44:6<821::AID-MRM1>3.0.CO;2-S

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 T1‐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. Magn Reson Med 44:821–824, 2000. © 2000 Wiley‐Liss, Inc.