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Single-chip pulse programmer for magnetic resonance imaging using a 32-bit microcontroller.

Shinya Handa¹, Thierry Domalain, Katsumi Kose

¹Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki, Japan.

The Review of Scientific Instruments

|September 4, 2007

Summary

A new magnetic resonance imaging (MRI) pulse programmer was developed using a single-chip microcontroller. This advancement enables precise MRI pulse sequence generation with high time resolution.

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Area of Science:

Medical Imaging
Biomedical Engineering
Embedded Systems

Background:

Developing efficient pulse programmers is crucial for advancing magnetic resonance imaging (MRI) capabilities.
Existing systems may face limitations in terms of integration, cost, or performance.

Purpose of the Study:

To design and implement a novel MRI pulse programmer utilizing a single-chip microcontroller.
To evaluate the performance and effectiveness of the developed pulse programmer for MRI applications.

Main Methods:

A single-chip microcontroller (ADmicroC7026) integrating CPU, memory, timers, and converters was employed.
An evaluation board connected to a host PC, MRI transceiver, and gradient driver facilitated system integration.
Embedded and host PC programs were developed for MRI pulse sequence generation.

Main Results:

The pulse programmer achieved a nominal time resolution of approximately 100 nanoseconds.
A minimum time delay between successive events of approximately 9 microseconds was realized.
Successful imaging experiments validated the developed pulse programmer's effectiveness.

Conclusions:

The single-chip microcontroller-based MRI pulse programmer offers a viable and effective solution.
This approach demonstrates potential for enhanced MRI system performance and integration.
The developed system successfully generated MRI pulse sequences, proving its practical utility.