Streamoscope: A Low-Cost, Open-Source, USB-3-Capable Streaming Data Acquisition System for Low-Field MRI
Name
feld-feldj-meng-eecs-2024-thesis.pdf
Description
Thesis PDF
Size
8.22 MB
Format
Adobe PDF
Checksum (MD5)
651db22fc470581d9032a18c0c4b1bdf
Author(s)
Feld, Joseph W.
Advisor(s)
White, Jacob K.
Date Issued
September 2024
Publisher
Massachusetts Institute of Technology
Abstract
Magnetic Resonance Imaging (MRI) is a powerful, safe imaging technique based on using magnetism to provide contrast between soft tissues. Portable, low-field MRI is a growing area that has already demonstrated value in both educational and clinical domains. Low-field MRI systems need to acquire data with sample rates in the tens of megahertz, which can make the data acquisition system the bulk of the overall cost of low-cost systems. This work presents the Streamoscope: an open-source data acquisition system designed for low-field MRI that streams two 14-bit resolution channels at 60 megasamples per second over USB-3 into Python. It is approximately $300 in parts, about a quarter of the price of the cheapest data acquisition system on the market that would work in our case study. The Streamoscope can stream full-sample-rate raw MRI data into a computer to be processed in Python, enabling real time imaging. The system has been validated by generating 2D images of a phantom on a system with an 8 MHz Larmor frequency.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
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