HTGRAPPA: Real-time B 1 -weighted image domain TGRAPPA reconstruction
نویسندگان
چکیده
منابع مشابه
Parallelized Hybrid TGRAPPA Reconstruction for Real-Time Interactive MRI
Real-time parallel MRI reconstruction was demonstrated using a hybrid implementation of the TGRAPPA algorithm. The GRAPPA coefficients were calculated in k-space and applied in the image domain after appropriate transformation, thereby achieving improved speed and excellent image quality. Adaptive B1-weighted combining of the per coil images permitted use of pre-calculated composite image domai...
متن کاملA Reconfigurable Real-time Image Reconstruction Engine for Parallel MRI
Parallel MRI acquisitions are generally reconstructed into images off-line, on PCs and computer clusters. Here, we present an innovative single-FPGA engine that performs realtime 2D-FFT image reconstruction from arrays of up to 16 coils. Partial reconfiguration enables rapid switching of FPGA modules for maximal flexibility and lower hardware cost. If the engine is integrated on to an FPGA-base...
متن کاملReal-time 3D image reconstruction guidance in liver resection surgery.
BACKGROUND Minimally invasive surgery represents one of the main evolutions of surgical techniques. However, minimally invasive surgery adds difficulty that can be reduced through computer technology. METHODS From a patient's medical image [US, computed tomography (CT) or MRI], we have developed an Augmented Reality (AR) system that increases the surgeon's intraoperative vision by providing a...
متن کاملReal-Time Spiral Image Reconstruction Using Fixed-Point Calculations
INTRODUCTION Among fast MRI methods, spiral imaging method has long been considered as an alternative to echo planar imaging (EPI). This is mainly due to the fact that the image quality of spiral imaging is better than EPI when motion is presented. In real-time imaging applications such as fluoroscopy, the superior motion property of spiral proves to be an advantage. On the other hand, spiral i...
متن کاملVariable Weighted Ordered Subset Image Reconstruction Algorithm
We propose two variable weighted iterative reconstruction algorithms (VW-ART and VW-OS-SART) to improve the algebraic reconstruction technique (ART) and simultaneous algebraic reconstruction technique (SART) and establish their convergence. In the two algorithms, the weighting varies with the geometrical direction of the ray. Experimental results with both numerical simulation and real CT data ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2009
ISSN: 0740-3194
DOI: 10.1002/mrm.21922