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24 January 2000 Magnetic resonance techniques for real-time assessment of thermal treatment
Thaddeus V. Samulski
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Proceedings Volume 10297, Matching the Energy Source to the Clinical Need: A Critical Review; 102970G (2000) https://doi.org/10.1117/12.375217
Event: Digital Optical Computing, 1990, Los Angeles, United States
Abstract
This paper reviews the application of MRI as a non-invasive technique for accessing temperature in thermal therapies. Two MR parameters, T1 relaxation and proton resonance frequency (PRF), have shown temperature sensitivity that is measurable with MRI. A third temperature dependent parameter associated with the self-diffusion of water, referred to as the apparent diffusion coefficient (ADC), is not intrinsic to nuclear magnetic resonance (NMR), but can be measured using MRI. These three parameters have been useful for quantitatively mapping temperature distributions in vivo. Each requires a tailored imaging technique. Each has pros and cons with regard to a given application. At this point in the development of MR image guided temperature mapping, the PRF shift technique is preferable, particularly with regard to non-invasive thermal ablation procedures. This approach has problems with stability and motion in procedures that require heating for extended time periods. Further development of MRI thermometry is required for long duration procedures.
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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Thaddeus V. Samulski "Magnetic resonance techniques for real-time assessment of thermal treatment", Proc. SPIE 10297, Matching the Energy Source to the Clinical Need: A Critical Review, 102970G (24 January 2000); https://doi.org/10.1117/12.375217
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KEYWORDS
Magnetic resonance imaging
Magnetism
Diffusion
In vivo imaging
Temperature metrology
Therapeutics
Thermometry
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