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Abstract #3839

Method for Estimating K-T Sensitivity from Under-Sampled Data with No Training Scans

Hidenori Takeshima1, Shuhei Nitta1, Taichiro Shiodera1, Tomoyuki Takeguchi1, Masao Yui2, Shigehide Kuhara2

1Corporate Research & Development Center, Toshiba Corporation, Kawasaki, Kanagawa, Japan; 2MRI Systems Division, Toshiba Medical Systems Corporation, Otawara-shi, Tochigi, Japan

The number of calibration samples is relatively high when the number of phase encodes is small or when the reduction factor is high. To reduce the acquisition time, we have developed a novel method for estimating k-t coil sensitivity maps from only the k-t data to be reconstructed. The images reconstructed by the proposed method are as clear as those reconstructed by k-t SENSE. The processing time of the proposed method is about 11.6 seconds for data scanned with reduction factor R = 4, 256 readout encoding steps, 96/R phase encoding steps, 32 coils, and 96 frames.

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Keywords

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