Usefulness of Magnetic Resonance Imaging Early After Acute Myocardial Infarction

Kramer, Christopher M.; Rogers, W. Todd; Geskin, Gennady; Power, Thomas P.; Theobald, Therese M.; Hu, Yong-Lin; Reichek, Nathaniel

doi:10.1016/s0002-9149(97)00496-7

Cited by 41 publications

(19 citation statements)

References 29 publications

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“…The signal of saturation recovery SSFP sequence S TFL is (15) [2] where ␣ is the RF flip angle, TI is the saturation time (the time between center of saturation pulse to that of data acquisition), and M 0 is the equilibrium magnetization; E1 ϭ exp(ϪTR/T 1 ) and E2 ϭ exp(ϪTR/T 2 ). The signal of SR segmented EPI sequence was not simulated separately because of its similar behavior as SR spoiled GRE in Eq.…”

Section: Computer Simulationsmentioning

confidence: 99%

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Myocardial first pass perfusion: Steady‐state free precession versus spoiled gradient echo and segmented echo planar imaging

Wang

Moin

Akinboboye

et al. 2005

Magnetic Resonance in Med

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The imaging sequences used in first pass (FP) perfusion to date have important limitations in contrast-to-noise ratio (CNR), temporal and spatial resolution, and myocardial coverage. As a result, controversy exists about optimal imaging strategies for FP myocardial perfusion. Since imaging performance varies from subject to subject, it is difficult to form conclusions without direct comparison of different sequences in the same subject. The purpose of this study was to directly compare the saturation recovery SSFP technique to other more commonly used myocardial first pass perfusion techniques, namely spoiled GRE and segmented EPI. Differences in signal-to-noise ratio (SNR), CNR, relative maximal upslope (RMU) of signal amplitude, and artifacts at comparable temporal and spatial resolution among the three sequences were investigated in computer simulation, contrast agent doped phantoms, and 16 volunteers. The results demonstrate that SSFP perfusion images exhibit an improvement of approximately 77% in SNR and 23% in CNR over spoiled GRE and 85% SNR and 50% CNR over segmented EPI. Mean RMU was similar between SSFP and spoiled GRE, but there was a 58% increase in RMU with SSFP versus segmented EPI. Magn Reson Med 54:1123-1129, 2005.

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Section: Computer Simulationsmentioning

confidence: 99%

“…Blood pool and myocardial signals for spoiled GRE and SSFP at different flip angles were simulated according to Eqs. [1] and [2], respectively.…”

Section: Computer Simulationsmentioning

confidence: 99%

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Myocardial first pass perfusion: Steady‐state free precession versus spoiled gradient echo and segmented echo planar imaging

Wang

Moin

Akinboboye

et al. 2005

Magnetic Resonance in Med

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“…Furthermore, we can assess regional contractile function directly by visual interpretation of cine loops or by wall motion and thickness measurement (68) . Following acute MI, cine CMR with low-dose dobutamine can be used to assess viability (69) . Highdose dobutamine stress CMR has high predictive value in identifying LV wall motion abnormalities due to coronary stenosis (70) .…”

Section: Cine Imagingmentioning

confidence: 99%

The Role of Cardiac MRI In Coronary Heart Disease Management

Al-kaiem¹,

Mera²

2017

IAM

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“…Hier scheint jedoch eine Darstellung nur der Nekrosezone, nicht jedoch des gesamten ischämischen Areals vorzuliegen [16]. Eine andere Methode zur Infarktgröûenbestim-mung ist der Nachweis des resultierenden Funktionsverlusts durch Cine-oder Tagging-Techniken [17]. Aus der Vielzahl der genannten Möglichkeiten wird deutlich, dass ein anerkannter Goldstandard zur Infarktgröûenbestimmung am Menschen fehlt.…”

Section: Diskussionunclassified