Related Experiment Video
Updated: Apr 3, 2026
Three-dimensional Super Resolution Microscopy of F-actin Filaments by Interferometric PhotoActivated Localization Microscopy iPALM
Published on: December 1, 2016
Autonomy for MRI Field Cameras: Synchronization, Self-Calibration, and Sequence Detection
Oskar Björkqvist1, Klaas P Pruessmann1
1Institute for Biomedical Engineering, ETH Zurich and University of Zurich, Zurich, Switzerland.
Purpose:
This work aims to provide a workflow for operating NMR field probes in MR scanners independently of pulse programming, scanner TTL trigger pulses and dedicated calibration sequences.
Methods:
An independent timing system and limited prior knowledge about relative probe positions enable synchronous field measurement, probe position calibration, and sequence parsing.
Results:
The proposed procedures were implemented and tested by measurement in a 3 T MRI system. They were found to achieve field-probe and field-camera functionality fully independently, without connection to or communication with the scanner. Autonomous position calibration deviated from the conventional method by less than 300 μm. Self-synchronization permitted the recording of sequence schematics and targeted measurement of sequence features of interest.
Conclusion:
Magnetic field sensing in MRI systems can be rendered autonomous and self-reliant for independent measurement. This capability paves the way for platform-agnostic field cameras and could readily integrate with existing systems.
