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Related Experiment Video

Updated: Jan 20, 2026

Real-Time Proxy-Control of Re-Parameterized Peripheral Signals using a Close-Loop Interface
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ReconSocket: a low-latency raw data streaming interface for real-time MRI-guided radiotherapy.

P T S Borman1,2, B W Raaymakers2, M Glitzner2

  • 1Department of Radiotherapy, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands.

Physics in Medicine and Biology
|August 29, 2019
PubMed
Summary

ReconSocket enables real-time MRI data streaming for radiotherapy, achieving low latency for motion monitoring. This system facilitates faster, more accurate image reconstructions during treatment, improving patient care.

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Area of Science:

  • Medical Physics
  • Radiotherapy Technology
  • Magnetic Resonance Imaging

Background:

  • Hybrid MRI-guided radiotherapy systems enable continuous intra-fraction motion monitoring.
  • Real-time custom image reconstruction capabilities are often limited.

Purpose of the Study:

  • To present ReconSocket, a low-latency streaming solution for k-space data from MRI to custom reconstruction servers.
  • To evaluate the performance of real-time MRI data streaming and custom reconstruction for radiotherapy applications.

Main Methods:

  • Developed and implemented ReconSocket for low-latency k-space data streaming.
  • Measured streaming latency and jitter using ultra-fast 1D MRI of a moving phantom.
  • Assessed imaging latency for 2D and 3D non-Cartesian acquisitions using an in-house reconstruction server.

Main Results:

  • ReconSocket demonstrated a streaming latency of [Formula: see text] ms with 98% of data packets arriving within a 367 [Formula: see text]s jitter range.
  • Total imaging latency was measured at 221 ms (2D) and 3889 ms (3D).
  • Reconstruction contribution to latency was minor (<10%), with acquisition being the primary factor.

Conclusions:

  • ReconSocket provides reliable real-time MRI data access for MRI-guided radiotherapy.
  • The system supports low-latency custom reconstructions, crucial for intra-fraction motion management.
  • Image acquisition, not reconstruction, is the main bottleneck for total imaging latency in this setup.