Motion Correction with Propeller MRI: Application to Head Motion
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چکیده
منابع مشابه
Motion correction with PROPELLER MRI: application to head motion and free-breathing cardiac imaging.
A method for motion correction, involving both data collection and reconstruction, is presented. The PROPELLER MRI method collects data in concentric rectangular strips rotated about the k-space origin. The central region of k-space is sampled for every strip, which (a) allows one to correct spatial inconsistencies in position, rotation, and phase between strips, (b) allows one to reject data b...
متن کاملPROPELLER MRI: clinical testing of a novel technique for quantification and compensation of head motion.
While head motion is considered a significant problem in magnetic resonance imaging (MRI), there is no data to quantify its extent, severity, or effect on image quality. PROPELLER (Periodically Rotated Overlapping ParallEL Lines with Enhanced Reconstruction) MRI offers a novel means of quantifying and compensating for head motion. We performed axial T2-weighted PROPELLER (motion corrected: P-CR...
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PROPELLER technique is widely used in MRI examinations for being motion insensitive, but it prolongs scan time and is restricted mainly to T2 contrast. Parallel imaging can accelerate PROPELLER and enable more flexible contrasts. Here, we propose a multi-step joint-blade (MJB) SENSE reconstruction to reduce the noise amplification in parallel imaging accelerated PROPELLER. MJB SENSE utilizes th...
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Background and Objectives: In the last two decades, the prevalence of neck pain has been increasing and now it is considered the second musculoskeletal disorder after back pain. The general purpose of this research is to compare the effect of a course of posture correction and strength exercises with emphasis on the head and neck position on Pain, weakness of neck muscles and range of motion of...
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AbstractObjective: To investigate the impact of respiratory motion on localization, and quantification lung lesions for the Gross Tumour Volume utilizing an in-house developed Auto3Dreg programme and dynamic NURBS-based cardiac-torso digitised phantom (NCAT). Methods: Respiratory motion may result in more than 30% underestimation of the SUV values of lung, liver and kidney tumour lesions. The m...
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تاریخ انتشار 2004