Using Focused Ultrasound to Treat Tumors
Author Information
Author(s): Price Sebastian E. N., Gjennestad Magnus Aa., Kjelstrup Signe, Hansen Rune
Primary Institution: The Norwegian University of Science and Technology (NTNU)
Hypothesis
Can acoustic streaming be induced in tumors without exceeding safe temperature limits?
Conclusion
The study suggests that it is possible to achieve effective acoustic streaming in tumors while keeping temperatures below harmful levels.
Supporting Evidence
- Simulations indicated that higher frequencies and larger probe radii resulted in shorter treatment times.
- Treatment times for streaming a distance of 50 μm in the breast case ranged from less than one and a half hour to 93 hours.
- The temperature rise during treatment was fitted to a logarithmic equation for predictions over longer treatment times.
Takeaway
Doctors can use sound waves to help deliver medicine to tumors without overheating them.
Methodology
Simulations were conducted for breast and abdomen tumors to assess acoustic streaming and temperature rise under various ultrasound settings.
Limitations
The study assumes homogeneity in tumor tissue and neglects the effects of perfusion, which could influence results.
Digital Object Identifier (DOI)
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