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Coronary magnetic resonance angiography

Matthias Stuber, Robert G. Weiss
2007 Journal of Magnetic Resonance Imaging  
Imaging sequences used for coronary MRA In general, coronary MRA consists of a motion suppression module (ECG triggering, short acquisition interval, navigators…), a magnetization preparation module (fat  ...  To compensate for respiratory motion, breath-holding was implemented early to allow for suppression of respiratory motion.  ... 
doi:10.1002/jmri.20949 pmid:17610288 fatcat:lk6b5hzo2zgihmwl62uk4hvlqe

A 3D balanced-SSFP Dixon technique with group-encoded k-space segmentation for breath-held non–contrast-enhanced MR angiography

Manojkumar Saranathan, Ersin Bayram, Pauline W. Worters, James F. Glockner
2012 Magnetic Resonance Imaging  
GUINNESS was evaluated for breath-held non-contrast-enhanced MR angiography of the renal arteries on 18 subjects (6 healthy volunteers, 12 patients) at 3.0 T.  ...  The method provided high signal-to-noise and contrast renal angiograms with homogeneous fat and background suppression in short breathholds on the order of 20 seconds with high spatial resolution and coverage  ...  Introduction Contrast-enhanced MR angiography (CEMRA) is commonly used in the diagnosis and evaluation of renal artery stenosis (RAS) [1] [2] .  ... 
doi:10.1016/j.mri.2011.09.013 pmid:22055852 pmcid:PMC3414056 fatcat:safn5w3ktbhpphwvvb34ybxfn4

Dark blood cardiovascular magnetic resonance of the heart, great vessels, and lungs using electrocardiographic-gated three-dimensional unbalanced steady-state free precession

Robert R. Edelman, Nondas Leloudas, Jianing Pang, Ioannis Koktzoglou
2021 Journal of Cardiovascular Magnetic Resonance  
Breath-holding was used in 29 subjects and navigator gating in 2 subjects.  ...  To test the feasibility of this approach, we performed a pilot study in healthy subjects and patients undergoing cardiovascular magnetic resonance (CMR).  ...  Previous reports using other imaging techniques demonstrated that ECG gating improved Fig. 8 Example of dark blood imaging of the lungs using non-contrast, breath-hold 3D uSSFP.  ... 
doi:10.1186/s12968-021-00808-2 pmid:34724939 pmcid:PMC8559409 fatcat:bt32g6gh3zbdtdcjladiyo6lxy

Imaging of the pulmonary vasculature in congenital heart disease without gadolinium contrast: Intraindividual comparison of a novel Compressed SENSE accelerated 3D modified REACT with 4D contrast-enhanced magnetic resonance angiography

Lenhard Pennig, Anton Wagner, Kilian Weiss, Simon Lennartz, Jan-Peter Grunz, David Maintz, Kai Roman Laukamp, Tilman Hickethier, Claas Philip Naehle, Alexander Christian Bunck, Jonas Doerner
2020 Journal of Cardiovascular Magnetic Resonance  
(modified REACT-non-contrast-enhanced magnetic resonance angiography (modified REACT-non-CE-MRA)) with standard non-ECG-triggered time-resolved 4D CE-MRA for imaging of the pulmonary arteries and veins  ...  In this study, we compared a novel Compressed SENSE accelerated (factor 9) electrocardiogram (ECG)- and respiratory-triggered 3D modified Relaxation-Enhanced Angiography without Contrast and Triggering  ...  Nevertheless, the majority of time-resolved MRA uses some form of data sharing across time, making them sensitive to respiratory motion artifacts; therefore the majority is performed during a breath-hold  ... 
doi:10.1186/s12968-019-0591-y pmid:31969137 pmcid:PMC6977250 fatcat:k7cg4uk2e5d2bj53w3l7nri4h4

Nonenhanced MR angiography of the pulmonary arteries using single-shot radial quiescent-interval slice-selective (QISS): a technical feasibility study

Robert R. Edelman, Robert I. Silvers, Kiran H. Thakrar, Mark D. Metzl, Jose Nazari, Shivraman Giri, Ioannis Koktzoglou
2017 Journal of Cardiovascular Magnetic Resonance  
For evaluation of the pulmonary arteries in patients suspected of pulmonary embolism, CT angiography (CTA) is the first-line imaging test with contrast-enhanced MR angiography (CEMRA) a potential alternative  ...  In subjects with atrial fibrillation, single-shot radial QISS consistently depicted the pulmonary artery branches, whereas navigator-gated 3D balanced steady-state free precession showed motion artifacts  ...  bSSFP: Balanced steady-state free precession; CE: Contrast enhanced; CTA: Computed tomography angiography; ECG: Electrocardiogram; MRA: Magnetic resonance angiography; PE: Pulmonary embolism; QISS: Quiescent-interval  ... 
doi:10.1186/s12968-017-0365-3 pmid:28662717 pmcid:PMC5492118 fatcat:eawwt3es6zc3nbnuu3a5tshwg4

Cardiac MR Assessment of Coronary Arteries

Ahmed Hamdy, Masaki Ishida, Hajime Sakuma
2017 Cardiovascular Imaging Asia  
Coronary magnetic resonance angiography (MRA) is now performed mostly as a whole heart, free breathing, three-dimensional study.  ...  The use of coronary MRA is well established in coronary artery anomalies and aneurysms.  ...  MRA: magnetic resonance angiography.  ... 
doi:10.22468/cvia.2016.00066 fatcat:zp7shphcnbdnnols4ifwlrdsgq

Radial-based acquisition strategies for pre-procedural non-contrast cardiovascular magnetic resonance angiography of the pulmonary veins

Pascale Aouad, Ioannis Koktzoglou, Bastien Milani, Ali Serhal, Jose Nazari, Robert R. Edelman
2020 Journal of Cardiovascular Magnetic Resonance  
Background Computed tomography angiography (CTA) or contrast-enhanced (CE) cardiovascular magnetic resonance angiography (CMRA) is often obtained in patients with atrial fibrillation undergoing evaluation  ...  We therefore explored the potential utility of both breath-holding and free-breathing non-contrast CMRA, using radial k-space trajectories that are known to be less sensitive to flow and motion artifacts  ...  Computed tomography angiography (CTA) and contrast-enhanced (CE) cardiovascular magnetic resonance angiography (CE-CMRA) are currently well accepted modalities for pre-procedural PV imaging [3] .  ... 
doi:10.1186/s12968-020-00685-1 pmid:33256791 pmcid:PMC7702691 fatcat:vlo37b2ouzhpzp54pnxkg7js6q

Free-breathing renal MR angiography with steady-state free-precession (SSFP) and slab-selective spin inversion: Initial results

Marcus Katoh, Arno Buecker, Matthias Stuber, Rolf W. Günther, Elmar Spuentrup
2004 Kidney International  
The aim of our study was the investigation of a novel navigator-gated three-dimensional (3D) steady-state free-precession (SSFP) sequence for free-breathing renal magnetic resonance angiography (MRA) without  ...  Renal MRA was performed using three navigator-gated free-breathing cardiac-triggered 3D SSFP sequences [repetition time (TR) = 4.4 ms, echo time (TE) = 2.2 ms, flip angle 85 • , spatial resolution 1.25  ...  These include time-of-flight [1] [2] [3] and phase-contrast [4, 5] magnetic resonance angiography (MRA).  ... 
doi:10.1111/j.1523-1755.2004.00882.x pmid:15327427 fatcat:45gmwqdtr5g2zh47nszuiewgge

Whole-heart 3D Late Gadolinium-enhanced MR Imaging: Investigation of Optimal Scan Parameters and Clinical Usefulness

Misako YORIMITSU, Kenichi YOKOYAMA, Toshiaki NITATORI, Hideaki YOSHINO, Sachiko ISONO, Shigehide KUHARA
2012 Magnetic Resonance in Medical Sciences  
Purpose: Whole-heart 3-dimensional (3D) late-gadolinium-enhanced magnetic resonance (MR) imaging (WH-LGE) uses respiratory gating combined with acquisition of 3D data for the entire heart in a single scan  ...  Results: Results in volunteers showed optimal scan parameters of 129‰ip angle, fat suppression turned oŠ in combination, and interleaved ordering.  ...  However, the current 3D scan method (conventional method) permits data acquisition in only a single direction during one breath-hold, so patients must be instructed to hold their breath several times for  ... 
doi:10.2463/mrms.11.9 pmid:22450382 fatcat:e35s6bf2ffhp7jivvfl6yc474m

First-Pass and Steady-State MR Angiography of Thoracic Vasculature in Children and Adolescents

Claas P. Naehle, Michael Kaestner, Andreas Müller, Winfried W. Willinek, Juergen Gieseke, Hans H. Schild, Daniel Thomas
2010 JACC Cardiovascular Imaging  
Standard first-pass (FP)-MRA uses a 3-dimensional MRA sequence with an extracellular contrast agent, in which spatial resolution is limited by breath-hold duration, and image quality (IQ) is limited by  ...  Magnetic resonance angiography (MRA) is an established noninvasive imaging modality for detection and evaluation of vascular pathologies in children with congenital heart disease.  ...  and respiratory motion artifacts. 3D ‫؍‬ 3-dimensional CMR ‫؍‬ cardiac magnetic resonance ECG ‫؍‬ electrocardiogram FP ‫؍‬ first-pass MRA ‫؍‬ magnetic resonance angiography SS ‫؍‬ steady-state ), 5 ϭ  ... 
doi:10.1016/j.jcmg.2009.12.015 pmid:20466346 fatcat:arv6sty57je6ze7wc73dep6oai

Magnetic resonance imaging in children: common problems and possible solutions for lung and airways imaging

Pierluigi Ciet, Harm A. W. M. Tiddens, Piotr A. Wielopolski, Jim M. Wild, Edward Y. Lee, Giovanni Morana, Maarten H. Lequin
2015 Pediatric Radiology  
Children usually have problems with long breath-holds and with the concept of quiet breathing.  ...  Despite its drawbacks, MRI also has advantages over CT, which justifies its further development and clinical use.  ...  Pulmonary magnetic resonance angiography Magnetic resonance angiography (MR angiography) of the chest can be obtained with or without the intravenous administration of contrast.  ... 
doi:10.1007/s00247-015-3420-y pmid:26342643 pmcid:PMC4666905 fatcat:3pzoxstvo5ajzcbt6pnggcpvny

Advances in Coronary MRA from Vessel Wall to Whole Heart Imaging

2007 Magnetic Resonance in Medical Sciences  
Since its introduction, magnetic resonance (MR) imaging has undergone continued technical and methodological development and found numerous practical clinical applications.  ...  We discuss planning procedure, contrast preparation mechanisms and MR sequences, motion correction, high-resolution coronary artery and vessel wall imaging, and fast volumetric scanning techniques.  ...  Whole heart coronary magnetic resonance angiography (CMRA) in healthy volunteers.  ... 
doi:10.2463/mrms.6.157 pmid:18037796 fatcat:u2mlzt6hsvfflkppwvbzvt6gwm

Inversion-recovery-prepared dixon bSSFP: Initial clinical experience with a novel pulse sequence for renal MRA within a breathhold

Pauline W. Worters, Manojkumar Saranathan, Alan Xu, Shreyas S. Vasanawala
2011 Journal of Magnetic Resonance Imaging  
Purpose-To evaluate the capability of a new breath-hold non-contrast-enhanced MRA method (Non-contrast Outer Radial Inner Square k-space Scheme, NORISKS) to visualize renal arteries by comparing the method  ...  Conclusion-We have demonstrated a promising non-CE MRA method for acquiring renal angiograms within a breath-hold without any compromise in spatial resolution or coverage.  ...  Other breath-hold non-contrast-enhanced MRA methods have been proposed for renal angiography but these were often achieved at a cost of limited spatial coverage, limited resolution, or using multiple breath-holds  ... 
doi:10.1002/jmri.23503 pmid:22095672 pmcid:PMC3290713 fatcat:mbsfsjw2ebgwxgwmkyurpxrxli

mDixon ECG-gated 3-dimensional cardiovascular magnetic resonance angiography in patients with congenital cardiovascular disease

Soultana Kourtidou, Marty R. Jones, Ryan A. Moore, Justin T. Tretter, Nicholas J. Ollberding, Eric J. Crotty, Mantosh S. Rattan, Robert J. Fleck, Michael D. Taylor
2019 Journal of Cardiovascular Magnetic Resonance  
Cardiovascular magnetic resonance (CMR) angiography (CMRA) is an important non-invasive imaging tool for congenital heart disease (CHD) and aortopathy patients.  ...  We sought to compare the respiratory navigated and electrocardiogram (ECG) gated modified Dixon (mDixon) CMRA sequence to conventional non-gated dynamic multi-phase contrast enhanced CMRA (CE-CMRA) and  ...  Enhanced (CE)-Cardiovascular Magnetic Resonance Angiography (CMRA)-bSSFP (b), CE-CMRA-mDixon (c); Signal-to-Noise Ratio (SNR) (d) and Contrast-to-Noise Ratio (CNR) (e) between bSSFP-mDixon.  ... 
doi:10.1186/s12968-019-0554-3 pmid:31391061 pmcid:PMC6686451 fatcat:jdrg4lqdlbeppadznh5xdcuq4e

Guidelines and protocols for cardiovascular magnetic resonance in children and adults with congenital heart disease: SCMR expert consensus group on congenital heart disease

Sohrab Fratz, Taylor Chung, Gerald F Greil, Margaret M Samyn, Andrew M Taylor, Emanuela R Valsangiacomo Buechel, Shi-Joon Yoo, Andrew J Powell
2013 Journal of Cardiovascular Magnetic Resonance  
Cardiovascular magnetic resonance (CMR) has taken on an increasingly important role in the diagnostic evaluation and pre-procedural planning for patients with congenital heart disease.  ...  Variations in practice are highlighted and expert consensus recommendations are provided. Indications and appropriate use criteria for CMR examination are not specifically addressed.  ...  The Society of Cardiovascular Magnetic Resonance funded a large portion of the telephone communications during the drafting process.  ... 
doi:10.1186/1532-429x-15-51 pmid:23763839 pmcid:PMC3686659 fatcat:qwejhg37irckvpqcybhysug7da
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