High-Resolution 3D Isotropic Black-Blood Imaging with T2prep Inversion Recovery: Comparison between FSE and SSFP
نویسندگان
چکیده
INTRODUCTION: T2prep Inversion Recovery [1] (T2IR) is a hybrid magnetization preparation technique that combines two well-known preparations, T2prep and Inversion Recovery, to provide contrast between tissues with similar T1 but different T2 relaxation times. This unique property has been utilized in vessel wall imaging where the wall-lumen contrast needs to be maximized for accurate diagnosis. Recently, it was demonstrated [2,3] that T2IR can provide flow-insensitive global black-blood (BB) suppression and is therefore suited for peripheral vessel wall MRI where slow blood flow presents a major challenge for flow-sensitive BB techniques such as double inversion recovery and spatial saturation. However, this significant advantage comes at the expense of reduced wall signal-to-noise ratio (SNR), thus requiring prohibitively long scan times when 2D imaging is used [4]. The purpose of this study was to develop an SNR efficient 3D T2IR sequence for high-resolution volumetric imaging of the popliteal artery and to optimize the data acquisition by comparing fast spin echo (FSE) and balanced steady-state free precession (SSFP) sampling strategies at 1.5 Tesla.
منابع مشابه
3D flow-insensitive vessel wall imaging using T2PREP PSIR with SSFP
Introduction Double Inversion Recovery (DIR) [1] and Flow Sensitive Dephasing (FSD) [2] have been used to suppress arterial signal in vessel wall imaging. However, the “black blood” effect of DIR and FSD depends on blood flow, which makes these techniques less effective with slow or in-plane flow. In this work, T1 and T2 differences between blood and vessel wall were exploited using a T2-prepar...
متن کاملDiffusion-prepared segmented steady-state free precession: Application to 3D black-blood cardiovascular magnetic resonance of the thoracic aorta and carotid artery walls.
This work developed a three-dimensional (3D) diffusion-prepared segmented steady-steady free precession (DP-SSFP) cardiovascular magnetic resonance (CMR) sequence for black-blood (BB) thoracic aortic and carotid wall visualization. In 14 healthy volunteers, BB CMR of the thoracic aorta (n = 7) and carotid arteries (n = 7) was performed over 12 cm and 3 cm of transversal coverage, respectively, ...
متن کاملBreast MRI Using a Balanced Steady-State Free Precession Imaging with a Two-Point Dixon Fat-Water Reconstruction Algorithm: Preliminary Experience and Comparison with 2D FSE
INTRODUCTION: Balanced steady-state free precession (b-SSFP) techniques yielding high SNR images in short scan times with T2-like image contrast have several appealing attributes for clinical breast MRI [1]. Clinical T2 imaging in the breast is routinely performed using a fat suppressed 2D Fast Spin Echo (FSE) pulse sequence with high in-plane spatial resolution. The 3-5 mm slice thickness obsc...
متن کاملNon-contrast-enhanced MR Portography using spin labeling technique: comparison of balanced SSFP and half-Fourier FSE sequence
PURPOSE Several MRA techniques have been implemented for non-invasive imaging of the portal vein. A time-spatial labeling inversion pulse (time-SLIP) technique was reported using a free hand spatial selection and tag-on and tag-off alternating scan and MIP processing to only depict the marked blood while canceling the background signals at any specified inversion time [1]. The purpose of this s...
متن کامل3D whole-heart phase sensitive inversion recovery CMR for simultaneous black-blood late gadolinium enhancement and bright-blood coronary CMR angiography
BACKGROUND Phase sensitive inversion recovery (PSIR) applied to late gadolinium enhancement (LGE) imaging is widely used in clinical practice. However, conventional 2D PSIR LGE sequences provide sub-optimal contrast between scar tissue and blood pool, rendering the detection of subendocardial infarcts and scar segmentation challenging. Furthermore, the acquisition of a low flip angle reference ...
متن کامل