Heating of Polymer Films Induced by High-Intensity Focused Ultrasound: Study of Acoustic and Thermal Effects.

08:00 EDT 11th September 2019 | BioPortfolio

Summary of "Heating of Polymer Films Induced by High-Intensity Focused Ultrasound: Study of Acoustic and Thermal Effects."

This paper presents the study of the thermal and acoustic effects occurring in polymer samples of different thicknesses receiving high-intensity focused ultrasound (HIFU). Whereas the heating mechanisms in polymer plates immersed in water are well known, the physical mechanisms enabling the heating of polymer films using a solid waveguide transducer remain not fully understood. A coupled acousto-thermal finite element simulation is conducted to model the sound field and the heat generation inside polymer samples of different thicknesses. To validate the acoustic model, the acoustic particle velocities at the transducer waveguide tip are measured by vibrometry and compared to the simulation results. The heating effects in the samples are monitored using an infrared thermography system and compared to the measured particle velocities and to the acoustic and thermal simulation results. Correlations between particle velocities, sound intensity and polymer heating are investigated. A qualitative and quantitative correlation between simulation and measurement results is found. Experiments show that the heating effects depend on the sample thickness. In samples thinner than 1 mm, the maximum temperature is lower than the one observed in samples thicker than 1mm but rises faster. The simulation shows that the sound intensity in polymer samples thinner than 1mm decreases sharply with the decrease of the sample thickness. This study contributes to understand the challenges in heating thin polymer films by HIFU in dry environment, using only a force to couple the transducer to the polymer films.


Journal Details

This article was published in the following journal.

Name: IEEE transactions on ultrasonics, ferroelectrics, and frequency control
ISSN: 1525-8955


DeepDyve research library

PubMed Articles [29899 Associated PubMed Articles listed on BioPortfolio]

Comparative Study of Pulsed Versus Continuous High-Intensity Focused Ultrasound Ablation Using in vitro and in vivo Models.

To compare the efficacy of pulsed high-intensity focused ultrasound (PHIFU) versus continuous high-intensity focused ultrasound (CHIFU) ablation at identical doses.

A study of efficacy and safety of high-intensity focused ultrasound for the treatment of melasma in Asians: A single-blinded, randomized, split-face, pilot study.

A recent report suggested potential of high-intensity focused ultrasound in improving UVB-induced hyperpigmentation in patients with Fitzpatrick skin type IV, but reports regarding its efficacy in oth...

Efficacy of high-intensity focused ultrasound in facial and neck rejuvenation.

High-intensity focused ultrasound (HIFU) has recently been introduced in the treatment of facial wrinkles and laxity.

High-Intensity Focused Ultrasound in the Treatment of Abdominal Wall Endometriosis.

To evaluate high-intensity focused ultrasound (HIFU) ablation therapy for abdominal wall endometriosis.

Is High-Intensity Focused Ultrasound (HIFU) effective for the treatment of Adenomyosis? A systematic review and meta-analysis.

To systematically review the literature regarding the efficacy of High-Intensity Focused Ultrasound (HIFU) in reducing adenomyotic lesion, patient's pain and bleeding symptoms and impact on patient's ...

Clinical Trials [12264 Associated Clinical Trials listed on BioPortfolio]

High-Intensity Focused Ultrasound Therapy in Treating Patients With Localized Prostate Cancer

RATIONALE: High-intensity focused ultrasound energy may be able to kill tumor cells by heating them without affecting normal tissue. PURPOSE: This phase II trial is studying how well high...

High-Intensity Focused Ultrasound Ablation in Treating Patients With Localized Prostate Cancer

RATIONALE: Highly focused ultrasound energy may be able to kill tumor cells by heating the tumor without affecting the surrounding tissue. PURPOSE: This phase II trial is studying the sid...

High-Intensity Focused Ultrasound in Treating Participants With Intermediate and High-risk Prostate Cancer

This phase II trial studies how well high-intensity focused ultrasound works in treating participants with intermediate and high-risk prostate cancer. High-intensity focused ultrasound use...

Targeted Vessel Ablation of Type 3 Uterine Fibroids With Magnetic Resonance Guided High Intensity Focused Ultrasound

So-called type 1 and 2 uterine fibroids are well treatable with Magnetic Resonance guided High Intensity Focused Ultrasound (MR-HIFU). The other type, type 3 fibroids, however, are known f...

High-Intensity Focused Ultrasound Focal Ablation in Treating Patients With Progressive Prostate Cancer

RATIONALE: High-intensity focused ultrasound focal ablation uses high-energy sound waves to kill tumor cells. PURPOSE: This phase II trial is studying the side effects of high-intensity f...

Medical and Biotech [MESH] Definitions

The use of focused, high-frequency sound waves to destroy tissue. It is sometimes used in conjunction with but is distinct from INTERVENTIONAL ULTRASONOGRAPHY.

Tissue ablation of the PROSTATE performed by ultrasound from a transducer placed in the RECTUM. The procedure is used to treat prostate cancer (PROSTATIC NEOPLASMS) and benign prostatic hypertrophy (PROSTATIC HYPERPLASIA).

The use of HIGH-ENERGY SHOCK WAVES, in the frequency range of 20-60 kHz, to cut through or remove tissue. The tissue fragmentation by ultrasonic surgical instruments is caused by mechanical effects not heat as with HIGH-INTENSITY FOCUSED ULTRASOUND ABLATION.

Abnormally high temperature intentionally induced in living things regionally or whole body. It is most often induced by radiation (heat waves, infra-red), ultrasound, or drugs.

The application of high intensity ultrasound to liquids.

Quick Search

DeepDyve research library

Relevant Topic

Radiology is the branch of medicine that studies imaging of the body; X-ray (basic, angiography, barium swallows), ultrasound, MRI, CT and PET. These imaging techniques can be used to diagnose, but also to treat a range of conditions, by allowing visuali...

Searches Linking to this Article