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Abstract #4894

Characterizing the Temperature Dependence of T2 in Phantoms using an Ethylene Glycol Reference

Adrienne G. Siu1, Boyan Ivanov1, Alex K. Smith1, Matthew D. Robson1, and Roberto Salvati1
1Perspectum, Oxford, United Kingdom

Synopsis

Keywords: Relaxometry, Phantoms, TemperaturePhantom vials of varying T2 were calibrated as a function of temperature, where the temperature was measured via multi-echo gradient echo imaging of ethylene glycol in a phantom vial. The temperature calibrations were used to adjust T2 to a reference temperature, achieving T2 deviations to within [-3.2, 2.0] ms [-3.1%, 2.9%] on Siemens 3T (16.7ºC – 25.1ºC) and [-3.5, 1.4] ms [-3.4%, 0.8%] on GE 1.5T (16.5ºC – 23.7ºC). This demonstrates that corrections for T2 due to temperature can be performed while measuring temperature from gradient-echo imaging of ethylene glycol.

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