Cardiac-respiratory self-gated cine ultra-short echo time (UTE) cardiovascular magnetic resonance for assessment of functional cardiac parameters at high magnetic fields

Hoerr, Verena; Nagelmann, Nina; Nauerth, Arno; Kuhlmann, Michael; Stypmann, Jörg; Faber, Cornelius

doi:10.1186/1532-429x-15-59

Cited by 37 publications

(31 citation statements)

References 44 publications

(38 reference statements)

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“…Because at HF ECG signal is often degraded by the magnetohydrodynamic effects, RF pulses, and gradient switching during scanning [53], alternative techniques to the classical gating have been reported for rodents, using optimized gating strategies with cardiorespiratory monitoring [6,33] or complete monitoring-free approaches [63][64][65]103]. Optimized approaches developed to speed up image acquisitions are developed in ''Improving imaging speed: parallel imaging, compressed sensing (CS) and cryoprobes''.…”

Section: Animal Handling and Gating Strategiesmentioning

confidence: 99%

High field magnetic resonance imaging of rodents in cardiovascular research

et al. 2016

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Transgenic and gene knockout rodent models are primordial to study pathophysiological processes in cardiovascular research. Over time, cardiac MRI has become a gold standard for in vivo evaluation of such models. Technical advances have led to the development of magnets with increasingly high field strength, allowing specific investigation of cardiac anatomy, global and regional function, viability, perfusion or vascular parameters. The aim of this report is to provide a review of the various sequences and techniques available to image mice on 7-11.7 T magnets and relevant to the clinical setting in humans. Specific technical aspects due to the rise of the magnetic field are also discussed.

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Section: Animal Handling and Gating Strategiesmentioning

confidence: 99%

High field magnetic resonance imaging of rodents in cardiovascular research

et al. 2016

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“…The basic idea of self-gating is extracting the information of cardiac cycle from the k-space measurements without extra operators or equipment [5]. Some researcher are working on the respiratory self-gated research [6] [7] [8].…”

Section: Instructionmentioning

confidence: 99%

Automated cardiac self-gated radial CMRI

Yang

Zheng

2015

2015 IEEE International Symposium on Medical Measurements and Applications (MeMeA) Proceedings

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Distortions in electrocardiogram (ECG) signals affect the image quality and increase scan time of Cardiac Magnetic Resonance Imaging (CMRI) exams. This study proposes an alternative method of acquiring CMRI cine images in mouse heart using a self-gated Ultra-short Echo Time (UTE) protocol. In our method, a bandpass filter and a lowpass filter are adopted to extract the self-gated signals from the center of the raw no-gated k-space measurements, A live mouse has been tested as the example to verify the method. The results demonstrated that this method could be used for reconstruction of the no-gated UTE CMRI measurements without using of external ECG signals.Index Terms-Self-Gated (SG), bandpass filter, radial CMRI.This full text paper was peer-reviewed at the direction of IEEE Instrumentation and Measurement Society prior to the acceptance and publication.978-1-4799-6477-2/15/$31.00 ©2015 IEEE

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“…Ultrashort echo time (UTE) imaging of very short T2 components in tissues may allow detection of fibrosis and calcification in the myocardium and atherosclerotic plaques [176][177][178]. Stress perfusion imaging may also be combined with arterial spin labeling (ASL), or mapping techniques in addition to BOLD imaging to avoid gadolinium administration.…”

Section: Latest Technical Developments and Future Trendsmentioning

confidence: 99%