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Whole-heart coronary MRA datasets were acquired from nine healthy subjects using a diaphragmatic NAV and using 3D-LOC. There was no significant difference between the subjective image score of NAV and 3D-LOC in three main coronary branches. The vessel sharpness of 3D-LOC was higher than NAV in the right (0.44?��?0.08 vs. 0.49?��?0.08; P?=?0.055) and left circumflex arteries (0.49?��?0.05 vs. 0.52?��?0.04; P?=?0.039). Scan time for 3D-LOC was significantly shorter than NAV (4.3?��?0.6 vs. 8.3?��?2.3 min; P?=?0.004). Compared to NAV gating, 3D-LOC for coronary MRA reduces scan time by nearly 50% without compromising image quality. Magn Reson Med 71:2118�C2126, 2014. ? 2013 Wiley Periodicals, Inc. ""MR myocardial perfusion imaging is dependent on reliable electrocardiogram (ECG) triggering for accurate measurement of myocardial http://www.selleckchem.com/products/pirfenidone.html blood flow (MBF). A non�CECG-triggered http://www.selleck.cn/products/Paclitaxel(Taxol).html method for quantitative first-pass imaging may improve clinical feasibility in patients with poor ECG signal. The purpose of this study is to evaluate the feasibility of a non�CECG-triggered method for myocardial perfusion imaging in a single slice. The proposed non�CECG-triggered technique uses a saturation-recovery magnetization preparation and golden-angle radial acquisition for integrated arterial input function (AIF) measurement. Image based self-gating with a temporal resolution of 42.6 ms is used to generate a first-pass image series with consistent cardiac phase. The AIF is measured using beat-by-beat T1 estimation of the ventricular blood pool. The proposed http://www.selleckchem.com/products/Maraviroc.html technique was performed on 14 healthy volunteers and compared against a conventional ECG-triggered dual-bolus acquisition. The proposed method produced MBF with no significant difference compared with ECG-triggered technique (mean of 0.63?��?0.22 mL/min/g to 0.73?��?0.21 mL/min/g). We have developed a non�CECG-triggered perfusion imaging method with T1 based measurement of the AIF in a single slice. In this preliminary study, our results demonstrate that MBF measured using the proposed method is comparable to the conventional ECG-triggered method. Magn Reson Med, 2014. ? 2014 Wiley Periodicals, Inc. ""We examined whether a magnetic field comparable to one of the fields produced during MRI induced steady-state changes in brain electrical activity while the field was applied (called a presence effect to distinguish it from evoked potentials). The electroencephalogram was measured from standard scalp locations in the presence and absence of 100-200 ��T, 60 Hz, and the effect of the field was evaluated by nonlinear (recurrence analysis) and linear techniques; individual subjects served as their own controls. Using recurrence analysis, changes in brain activity lasting 1 sec (the longest interval considered) were found in 21 of 22 subjects (P