Comparison of 3 Tesla Whole Heart Coronary MRA (WHCA) with 1.5 Tesla
نویسندگان
چکیده
منابع مشابه
Feasibility of Whole-Heart Coronary MRA on 3 Tesla Using Ultrashort-TR SSFP VIPR
Introduction: Coronary magnetic resonance angiography (MRA) has been performed on 3.0T to generate higher SNR compared to 1.5T. In addition, high blood-to-myocardium contrast could be achieved using the SSFP technique [1]. However, SSFP is highly sensitive to field inhomogeneities. In particular, signal nulls occur every 1/TR in resonance frequency, producing “banding” artifacts in images. With...
متن کاملIsotropic non-contrast whole-heart lumen only coronary MRA using local re-inversion and 2D-SENSE at 3 Tesla
Introduction Double-inversion recovery MRI with a cylindrical reinversion prepulse has been presented for selective visualization of the coronaries [1]. Local re-inversion (LoReIn [1]) labels the blood in the ascending aorta and LV, and acquires images after a labeling delay providing coronary MRA(cMRA) of the blood flow with excellent suppression of myocardial signal. LoReIn was now implemente...
متن کاملWhole-Heart Coronary MRA
Background MRI was first reported to visualize the ostia of the coronary arteries in the late 1980’s (1, 2). Tremendous progress has been made in coronary MRA ever since. One of the milestones was the acquisition of k-space data in a segmented mode (3, 4), allowing collection of an entire data set within multiple heartbeats. Early coronary MRA studies used two-dimensional (2D) technique to acqu...
متن کاملSpiral magnetic resonance coronary angiography--direct comparison of 1.5 Tesla vs. 3 Tesla.
BACKGROUND MR coronary angiography (MRCA) has been demonstrated successfully at 3 Tesla (T). However, the advantages remain unclear. No systematic comparison of MRCA between 1.5 T and 3 T has been performed. Therefore, anatomic coverage, image quality, signal-to-noise ratio (SNR), contrast-to-noise ration (CNR), and susceptibility artifacts were compared in 23 subjects. METHODS AND RESULTS Id...
متن کاملCardiovascular magnetic resonance perfusion imaging at 3-tesla for the detection of coronary artery disease: a comparison with 1.5-tesla.
OBJECTIVES This study was designed to establish the diagnostic accuracy of cardiovascular magnetic resonance (CMR) perfusion imaging at 3-Tesla (T) in suspected coronary artery disease (CAD). BACKGROUND Myocardial perfusion imaging is considered one of the most compelling applications for CMR at 3-T. The 3-T systems provide increased signal-to-noise ratio and contrast enhancement (compared wi...
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ژورنال
عنوان ژورنال: Japanese Journal of Radiological Technology
سال: 2008
ISSN: 0369-4305,1881-4883
DOI: 10.6009/jjrt.64.1540