Whole-heart cine MRI using real-time respiratory self-gating.

Full Abstract

Two-dimensional (2D) breath-hold cine MRI is used to assess cardiac anatomy and function. However, this technique requires cooperation from the patient, and in some cases the scan planning is complicated. Isotropic nonangulated three-dimensional (3D) cardiac MR can overcome some of these problems because it requires minimal planning and can be reformatted in any plane. However, current methods, even those that use undersampling techniques, involve breath-holding for periods that are too long for many patients. Free-breathing respiratory gating sequences represent a possible solution for realizing 3D cine imaging. A real-time respiratory self-gating technique for whole-heart cine MRI is presented. The technique enables assessment of cardiac anatomy and function with minimum planning or patient cooperation. Nonangulated isotropic 3D data were acquired from five healthy volunteers and then reformatted into 2D clinical views. The respiratory self-gating technique is shown to improve image quality in free-breathing scanning. In addition, ventricular volumetric data obtained using the 3D approach were comparable to those acquired with the conventional multislice 2D approach.

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Author information

Author/s: Uribe, Sergio (S); Muthurangu, Vivek (V); Boubertakh, Redha (R); Schaeffter, Tobias (T); Razavi, Reza (R); Hill, Derek L G (DL); Hansen, Michael S (MS);

Affiliation: Center for Medical Image Computing, University College London, London, UK.

Journal and publication information

Publication Type: Journal Article; Research Support, Non-U.S. Gov't

Journal: Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine (Magn Reson Med), published in United States. (Language: eng)

Reference: 2007-Mar; vol 57 (issue 3) : pp 606-13

Dates: Created 2007/03/05; Completed 2007/12/20;

PMID: 17326164, status: MEDLINE (last retrieval date: 12/26/2008)

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Heart - anatomy & histology
Humans
Imaging, Three-Dimensional
Magnetic Resonance Imaging, Cine - methods
Male
Respiration

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