Mini MRI

Mini MRI

The Mini MRI project was a special senior project during Winter Semester 2003. Eight team members participated in building an imaging controller on an FPGA, writing software for downloading RF and gradient waveforms, designing RF and gradient coils, as well as designing and implementing an RF transmitter/receiver.

FPGA Digital Controller

The digital controller receives arbitrary RF and gradient waveforms downloaded from a PC through a USB interface. It stores these waveforms in memory, then outputs them to DACs that are connected to the RF transmitter and gradients. The controller also receives the signal from the RF receiver and transmits it back to the PC.

Inhomogeneous Field Imaging

The main problem with the permanent magnet used for this project is the inhomogeneity of its field. However, this allows for researching inhomogeneous imaging methods.

Analog Hardware

An RF transmitter and and RF recevier were also designed and implemented for this project. The receiver was designed to take a microvolt signal and amplify it to a useful level for A/D conversion. Gradients will be added later. This project is still in progress.

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