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Single breath-hold whole heart coronary MRA with isotropic spatial resolution using highly-accelerated parallel imaging with a 32-element coil array
© Xu et al; licensee BioMed Central Ltd. 2010
Published: 21 January 2010
Whole heart coronary MRA (CMRA) is typically performed with navigator gating because of the extensive data acquisition needed to achieve an isotropic spatial resolution on the order of 1-2 mm3 with full anatomic coverage (10-16 cm). Previous studies have shown that whole heart CMRA can be performed with either a single  or double [2, 3] breath-hold (BH) approach using highly-accelerated parallel imaging. The single breath-hold approach  acquires the coil sensitivity data immediately before and after the coronary MRA data within the same cardiac cycle, whereas the double BH approach acquires coil sensitivity data in a separate BH. The single BH approach lengthens the time between the T2 and fat suppression pulses to the image acquisition, and the double BH approach may suffer from misregistration. We propose to acquire the coil sensitivity and coronary MRA data in two separate cardiac phases (early systole and mid diastole, respectively) both within a single BH, in order to circumvent the aforementioned problems.
To develop a robust single BH whole heart CMRA scan with isotropic spatial resolution.
We demonstrate the feasibility of performing single BH whole heart CMRA with isotropic spatial resolution. Compared with the double BH approach, the new single BH approach yielded less "pseudo-noise" artifacts in the GRAPPA reconstruction. This approach has the potential to improve diagnostic accuracy for rapid volumetric CMRA.
- Jaeseaok Park et al: High-resolution steady-state free precession coronary magnetic resonance angiography within a breath-hold: parallel imaging with extended cardiac data acquision. Magnetic Resonance in Medicine. 2005, B54B: 1100-1106.Google Scholar
- Thoralf Niendorf et al: Toward a single breath-hold whole-heart coverage coronary MRA using highly accelerated parallel imaging with a 32-channel MR system. Magnetic Resonance in Medicine. 2006, 56: 167-176. 10.1002/mrm.20923.View ArticleGoogle Scholar
- Jian Xu et al: Feasibility of five-minute comprehensive cardiac MR examination using highly accelerated parallel imaging with a 32-element coil array. ISMRM Honolulu. 2009, 725-Google Scholar
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