Improved Detection of Iron-Loaded Cells by Combining Balanced Steady-State Free Precession (bSSFP) Imaging with Susceptibility Weighted Imaging (SWI) Processing
نویسندگان
چکیده
منابع مشابه
Balanced steady-state free precession fMRI with intravascular susceptibility contrast agent.
One major challenge in echo planar imaging-based functional MRI (fMRI) is the susceptibility-induced image distortion. In this study, a new cerebral blood volume-weighted fMRI technique using distortion-free balanced steady-state free precession (bSSFP) sequence was proposed and its feasibility was investigated in rat brain at 7 Tesla. After administration of intravascular susceptibility contra...
متن کاملUltrahigh-resolution imaging of the human brain with phase-cycled balanced steady-state free precession at 7 T.
OBJECTIVES The objectives of this study were to acquire ultra-high resolution images of the brain using balanced steady-state free precession (bSSFP) at 7 T and to identify the potential utility of this sequence. MATERIALS AND METHODS Eight volunteers participated in this study after providing informed consent. Each volunteer was scanned with 8 phase cycles of bSSFP at 0.4-mm isotropic resolu...
متن کاملMagnetic resonance imaging of knee cartilage using a water selective balanced steady-state free precession sequence.
PURPOSE To compare an optimized water selective balanced steady-state free precession sequence (WS-bSSFP) with conventional magnetic resonance (MR) sequences in imaging cartilage of osteoarthritic knees. MATERIALS AND METHODS Flip angles of sagittal and axial WS-bSSFP sequences were optimized in three volunteers. Subsequently, the knees of 10 patients with generalized osteoarthritis were imag...
متن کاملPhysiological and Functional Magnetic Resonance Imaging Using Balanced Steady-state Free Precession
Balanced steady-state free precession (bSSFP) is a highly efficient pulse sequence that is known to provide the highest signal-to-noise ratio per unit time. Recently, bSSFP is getting increasingly popular in both the research and clinical communities. This review will be focusing on the application of the bSSFP technique in the context of probing the physiological and functional information. In...
متن کاملResting-State fMRI Using Passband Balanced Steady-State Free Precession
OBJECTIVE Resting-state functional MRI (rsfMRI) has been increasingly used for understanding brain functional architecture. To date, most rsfMRI studies have exploited blood oxygenation level-dependent (BOLD) contrast using gradient-echo (GE) echo planar imaging (EPI), which can suffer from image distortion and signal dropout due to magnetic susceptibility and inherent long echo time. In this s...
متن کامل