Parallelized hybrid TGRAPPA reconstruction for real-time interactive MRI.
Med Image Comput Comput Assist Interv
; 11(Pt 2): 163-70, 2008.
Article
en En
| MEDLINE
| ID: mdl-18982602
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 domain weights providing significant decrease in computation. The weight calculation was decoupled from the real-time image reconstruction as a parallel processing thread which was updated in an adaptive manner to speed convergence in the event of interactive change in scan plane. The computation was parallelized and implemented on a general purpose multi-core architecture. Reconstruction speeds of 65-70 frames per second were achieved with a matrix of 192 x 144 with 15 coils.
Buscar en Google
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Algoritmos
/
Interfaz Usuario-Computador
/
Reconocimiento de Normas Patrones Automatizadas
/
Inteligencia Artificial
/
Imagen por Resonancia Magnética
/
Interpretación de Imagen Asistida por Computador
Tipo de estudio:
Diagnostic_studies
Idioma:
En
Revista:
Med Image Comput Comput Assist Interv
Asunto de la revista:
DIAGNOSTICO POR IMAGEM
/
INFORMATICA MEDICA
Año:
2008
Tipo del documento:
Article
País de afiliación:
Estados Unidos
Pais de publicación:
Alemania