Feasibility of multi-slice black-blood double inversion-recovery imaging
نویسندگان
چکیده
TI(N), SNR in CA f P for SNR in CA as SI(N)ISI(l) in ms SD compared to N=l muscle 691 1.36*0.17 1 469 1.393~ 0.24 0.34 0.91 346 1.39+0.29 0.62 0.82 272 1.46f0.21 0.10 0.75 224 1.47i0.23 0.06 0.68 190 1.45+0.24 0.11 0.64 A multi-slice acquisition technique was proposed for double inversionrecovery (DIR) black-blood imaging. The method utilizes short inversion time providing an acquisition of several slices within the repetition time (TR), while the signal readout for each slice corresponds to the zero point of blood magnetization. The sliceselective inversion in DIR pulse pair is applied to the entire slice pack. An available number of slices per TR-interval is limited by the saturation of steady tissues and the incomplete outflow from an imaging volume. In high-resolution carotid artery imaging, the method can be safely applied for obtaining 3-4 slices per TR=2-2.5 s.
منابع مشابه
DANTE preparation for black-blood coronary wall imaging
Background Double inversion recovery (DIR) pre-pulses combined with ECG gating are often used [1] in black blood imaging. However, the inversion time is often too long. Also, the blood suppression is often insufficient in multi-slice studies. DANTE is a novel black-blood technique that has been shown to maintain SNR and CNR similar to single-slice DIR in ungated carotid artery studies [2] and i...
متن کاملVolumetric black-blood imaging of aortic dissection using T2 prepared inversion recovery
Background Aortic dissection is a life threatening condition, and the commonest presentation of the acute aortic syndrome, occurring in 80-90% of such cases. Identification of intimal tears is important to enable the success of an interventional procedure. MRI allows for black-blood contrast to depict the aortic vessel wall and intimal flap with positive contrast which help delineate tear and i...
متن کاملImproved 2D slice-interleaved flow-independent cardiac black blood imaging using Ferumoxytol
Background Double inversion recovery (DIR) is the most commonly used black blood (BB) preparation method. However its single slice nature makes the acquisition inefficient and flow-dependence causes insufficient blood suppression when stagnant blood or in-plane blood flow is present. In this work, we propose to use ferumoxytol, an FDA approved iron oxide particle for treating iron deficiency an...
متن کاملComparison of Gated and Ungated Black-Blood Fast Spin-echo MRI of Carotid Vessel Wall at 3T
PURPOSE Multi-slice ungated double inversion recovery has been proposed as an alternative time-efficient and effective sequence for black-blood carotid imaging. The purpose of this study is to evaluate the comparative repeatability of this multi-contrast sequence with respect to a single slice double inversion recovery prepared gated sequence. MATERIALS AND METHODS Ten healthy volunteers and ...
متن کاملMulti-Slice Breathhold Phase-Sensitive Coronary Vessel Wall Imaging at 3T
Introduction Black-blood coronary vessel wall imaging is a powerful non-invasive tool for the quantitative assessment of positive arterial remodeling. Although dual-inversionrecovery (DIR) is the current standard for non-invasive coronary vessel wall imaging, optimal lumen-vessel wall contrast is sometimes difficult to obtain and the time-window available for imaging is limited due to the compe...
متن کامل