Is a simple Dash application that broadcasts the daily QA test results, so they can be inspect from the comfort of your browser.

DQA_MONITOR is currently live at https://damp-austin-uclh.koyeb.app/

• The size of the circles is proportional to the standard deviation of the noise image.
  A large circle indicates a sub-optimal image subtraction, which can be due to excessive movement of the liquid inside the phantom.

• The length of the whiskers represent the standard deviation of the SNR measured. Long whiskers indicate a large variation in the SNR across the imaged volume, and that is okay. It is expected that each coil tested will have different SNR variation (as the coil elements can be closer or further away from the source of the signal, depending on the geometry of the test).

In order to evaluate the performance of rf-coils over time, it is critical that every coil is always tested using the same methodology (same protocol, same FOV, same phantom position, etc).

• In an ideal test, a well performing coil should appear as a flat band on the graph, with constant NSNR and standar deviation over time.
• In an ideal test, an under-performing coil should appear as a descending slope, (if the SNR is gradually worsening) or as a step reduction in the event of a sudden loss in SNR.