Journal Article10.1097/RLI.0B013E3181A7C6CB
Three-dimensional imaging of pulmonary veins by a novel steady-state free-precession magnetic resonance angiography technique without the use of intravenous contrast agent: initial experience.
Mayil S. Krishnam,Anderanik Tomasian,Sachin Malik,Aparna Singhal,Alex Sassani,Gerhard Laub,J. Paul Finn,Stefan G. Ruehm +7 more
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TL;DR: 3D depiction of PVs without intravenous contrast is feasible with nonslice-selective SSFP MRA, and this novel MRA technique may be used in certain patients with atrial fibrillation to assess the number and size of PV ostia draining to the left atrium prior to radiofrequency ablation.
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Abstract: Purpose:To evaluate the feasibility of 3-dimensional (3D) steady-state free-precession (SSFP) magnetic resonance angiography (MRA) using nonselective radiofrequency excitation for imaging of pulmonary veins (PVs) without intravenous gadolinium chelate and to correlate the results with conventional c
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Citations
Noncontrast MR angiography: An update.
TL;DR: The motivations for using noncontrast MRA, potential contrast mechanisms, imaging techniques, advantages, and drawbacks with respect to CTA and CEMRA, and the level of evidence for using the various MRA techniques are considered.
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Unenhanced MR Angiography of the Thoracic Aorta: Initial Clinical Evaluation
Christopher J. François,David Tuite,Vibhas S. Deshpande,Renate Jerecic,Peter Weale,James C. Carr +5 more
TL;DR: In patients in whom contrast material is contraindicated, unenhanced MRA using a 3D SSFP technique can be performed, and the quality of the images of the aortic root and the presence of cardiovascular and noncardiovascular pathology were independently determined.
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Current technological advances in magnetic resonance with critical impact for clinical diagnosis and therapy.
TL;DR: The last 5 years of technological advances with major impact on clinical magnetic resonance (MR) are discussed, with greater emphasis on those that are most recent, and the impact of this examination on screening for and evaluation and treatment of breast carcinoma is substantial.
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Accelerated noncontrast-enhanced pulmonary vein MRA with distributed compressed sensing
Mehmet Akcakaya,Peng Hu,Michael L Chuang,Thomas H. Hauser,Long Ngo,Warren J. Manning,Vahid Tarokh,Reza Nezafat +7 more
TL;DR: To investigate the efficacy of distributed compressed sensing to accelerate free‐breathing, electrocardiogram (ECG)‐triggered noncontrast pulmonary vein (PV) magnetic resonance angiography (MRA) Magnetic Resonance Angiography is studied.
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Noncontrast SSFP pulmonary vein magnetic resonance angiography: impact of off-resonance and flow.
Peng Hu,Christian T. Stoeck,Christian T. Stoeck,Jouke Smink,Dana C. Peters,Long Ngo,Beth Goddu,Kraig V. Kissinger,Lois A Goepfert,Jonathan Chan,Thomas H. Hauser,Neil M. Rofsky,Warren J. Manning,Reza Nezafat +13 more
TL;DR: To investigate pulmonary vein off‐resonance and blood flow as causes of signal void artifacts in noncontrast steady‐state‐free‐precession (SSFP) PV magnetic resonance angiography (MRA).
References
Spontaneous Initiation of Atrial Fibrillation by Ectopic Beats Originating in the Pulmonary Veins
Michel Haïssaguerre,Pierre Jaïs,D. C. Shah,Atsushi Takahashi,Mélèze Hocini,G Quiniou,S. Garrigue,A Le Mouroux,P Le Métayer,Jacques Clementy +9 more
TL;DR: The pulmonary veins are an important source of ectopic beats, initiating frequent paroxysms of atrial fibrillation and these foci respond to treatment with radio-frequency ablation.
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Generalized autocalibrating partially parallel acquisitions (GRAPPA).
Mark A. Griswold,Peter M. Jakob,Robin M. Heidemann,Mathias Nittka,Vladimir Jellus,Jianmin Wang,Berthold Kiefer,Axel Haase +7 more
TL;DR: This technique, GeneRalized Autocalibrating Partially Parallel Acquisitions (GRAPPA) is an extension of both the PILS and VD‐AUTO‐SMASH reconstruction techniques and provides unaliased images from each component coil prior to image combination.
Initiation of Atrial Fibrillation by Ectopic Beats Originating From the Pulmonary Veins Electrophysiological Characteristics, Pharmacological Responses, and Effects of Radiofrequency Ablation
Shih Ann Chen,Ming Hsiung Hsieh,Ching Tai Tai,Chin Feng Tsai,V. S. Prakash,Wen Chung Yu,Tsui Lieh Hsu,Yu An Ding,Mau Song Chang +8 more
TL;DR: Electrophysiological characteristics of PVs are different from those in the atria, and careful mapping and elimination of these ectopic foci can cure paroxysmal AF.
Cine MR angiography of the heart with segmented true fast imaging with steady-state precession.
TL;DR: Segmented cine true FISP MR imaging generated high-contrast MR images of the heart in healthy subjects and in patients with heart disease and produced image quality superior to that with cine FLASH MR imaging.
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High prevalence of nephrogenic systemic fibrosis in chronic renal failure patients exposed to gadodiamide, a gadolinium-containing magnetic resonance contrast agent.
TL;DR: The risk of NSF is unacceptably high among stage 5 CKD patients exposed to gadodiamide, particularly among patients with milder degrees of renal insufficiency.
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