A simple simultaneous geometric and intensity correction method for echo-planar imaging by EPI-based phase modulation.

A technique, based on echo planar imaging (EPI)-based phase modulation factor maps, is described for correction of EPI distortions resulting from field inhomogeneity. In this paper, a phase modulation factor was employed to remove the distortions. The phase modulation factor was obtained experimenta...

Полное описание

Библиографические подробности
Опубликовано в::	IEEE Transactions on medical imaging 22, 2 (2003).
Главный автор:	Jr-Yuan Chiou
Формат:	Статья
Язык:	English
Предметы:	EPI distortions. EPI-based phase modulation factor maps. Distortions. Echo-planar imaging. Estimation error. External noise. fMRI. Field inhomogeneity. Geometric correction method. Intensity correction method. Inter-echo time interval. Interpolation method. K-space data. Severely distorted images. Simple simultaneous method. Spin-echo images. Spin-echo spacing. Whole brain images.