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- W1928649265 endingPage "e0134938" @default.
- W1928649265 startingPage "e0134938" @default.
- W1928649265 abstract "Mild hyperthermia has been successfully employed to induce reversible physiological changes that can directly treat cancer and enhance local drug delivery. In this approach, temperature monitoring is essential to avoid undesirable biological effects that result from thermal damage. For thermal therapies, Magnetic Resonance Imaging (MRI) has been employed to control real-time Focused Ultrasound (FUS) therapies. However, combined ultrasound imaging and therapy systems offer the benefits of simple, low-cost devices that can be broadly applied. To facilitate such technology, ultrasound thermometry has potential to reliably monitor temperature. Control of mild hyperthermia was previously achieved using a proportional-integral-derivative (PID) controller based on thermocouple measurements. Despite accurate temporal control of heating, this method is limited by the single position at which the temperature is measured. Ultrasound thermometry techniques based on exploiting the thermal dependence of acoustic parameters (such as longitudinal velocity) can be extended to create thermal maps and allow an accurate monitoring of temperature with good spatial resolution. However, in vivo applications of this technique have not been fully developed due to the high sensitivity to tissue motion. Here, we propose a motion compensation method based on the acquisition of multiple reference frames prior to treatment. The technique was tested in the presence of 2-D and 3-D physiological-scale motion and was found to provide effective real-time temperature monitoring. PID control of mild hyperthermia in presence of motion was then tested with ultrasound thermometry as feedback and temperature was maintained within 0.3°C of the requested value." @default.
- W1928649265 created "2016-06-24" @default.
- W1928649265 creator A5013037422 @default.
- W1928649265 creator A5038873196 @default.
- W1928649265 date "2015-08-05" @default.
- W1928649265 modified "2023-10-18" @default.
- W1928649265 title "Spatial and Temporal Control of Hyperthermia Using Real Time Ultrasonic Thermal Strain Imaging with Motion Compensation, Phantom Study" @default.
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- W1928649265 doi "https://doi.org/10.1371/journal.pone.0134938" @default.
- W1928649265 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4526517" @default.
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- W1928649265 hasPublicationYear "2015" @default.
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