Magnetic resonance imaging apparatus and method with wireless transmission of compressed echo signals that are expanded and extracted at the receiver

摘要

According to one embodiment, an MRI apparatus includes a probe unit and a control/imaging unit. The probe unit includes a probe, a converter, a compressor and a transmitter. The control/imaging unit includes a receiver, an expander and a reconstructor. The probe detects an RF echo signal generated in a subject by a magnetic resonance phenomenon. The converter digitizes the detected signal. The compressor compresses the digitized signal in accordance with a predetermined compression parameter to obtain a compressed signal. The transmitter generates a transmission signal to wirelessly transmit the compressed echo signal and sends the transmission signal to a radio channel. The receiver receives the transmission signal and extracts the compressed signal from the received signal. The expander expands the extracted compressed signal in accordance with the parameter to obtain the RF echo signal. The reconstructor generates a video signal regarding the subject on the basis of the obtained signal.

主权项

1. A magnetic resonance imaging apparatus comprising a probe unit and a control/imaging unit,
the probe unit including: an RF probe which detects an RF echo signal generated in a subject by a magnetic resonance phenomenon; an analog-digital converter which digitizes the RF echo signal detected by the RF probe; an echo compressor which acquires a compressed echo signal by decimating samples of the RF echo signal that was digitized by the analog-digital converter in accordance with a predetermined compression parameter; and a first transmitter which generates a first transmission signal in order to wirelessly transmit the compressed echo signal and sends the first transmission signal to a first radio channel, the control/imaging unit including: a first receiver which receives the first transmission signal transmitted via the first radio channel and extracts the compressed echo signal from the received first transmission signal; an echo expander which expands the compressed echo signal extracted by the first receiver in accordance with the compression parameter in order to obtain the RF echo signal; and an image reconstructor which generates a video signal regarding the subject on the basis of the RF echo signal obtained by the echo expander.