ReconSocket: a low-latency raw data streaming interface for real-time MRI-guided radiotherapy.

ReconSocket: a low-latency raw data streaming interface for real-time MRI-guided radiotherapy.
Phys Med Biol. 2019 Aug 27;:
Authors: Borman PTS, Raaymakers BW, Glitzner M
Abstract
With the recent advent of hybrid MRI-guided radiotherapy systems, continuous intra-fraction MR imaging for motion monitoring has become feasible. The ability to perform real-time custom image reconstructions is however often lacking. In this work we present a low-latency streaming solution, ReconSocket, which provides a real-time stream of k-space data from the MRI to custom reconstruction servers. 
 
 We determined the performance of the data streaming by measuring the streaming latency (i.e., non-zero time delay due to data transfer and processing) and jitter (i.e., deviations from periodicity) using an ultra-fast 1D MRI acquisition of a moving phantom. Simultaneously, its position was recorded with near-zero time delay. The feasibility of low-latency custom reconstructions was tested by measuring the imaging latency (i.e., time delay between physical change and appearance of that change on the image) for several non-Cartesian 2D and 3D acquisitions using an in-house implemented reconstruction server. 
 
 The measured streaming latency of the ReconSocket interface was 3.18±1.67ms. 98% of the incoming data packets arrived within a jitter range of 367μs. This shows that the ReconSocket interface can provide ...

Source: Physics in Medicine and Biology - August 26, 2019 Category: Physics Authors: Borman PTS, Raaymakers BW, Glitzner M Tags: Phys Med Biol Source Type: research