Compressional wave hyperthermia treating method and apparatus
US4875487A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 2, 1986 |
| Grant date | Oct 24, 1989 |
| Priority date | — |
| Expiry date | May 2, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/22028
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A wide bandwidth compressional wave transducer array obtains information concerning tissue of a subject being treated and supplies hyperthermia compressional wave treating energy to a treated region of the subject. The array transducers are pulsed on and off with an on duty cycle portion of less than one. An array of compressional wave imaging transducers is in the center of the array of compressional wave hyperthermia focused far field transducers used to analyze and treat. The power and duty cycle of the compressional wave hyperthermia focused far field are varied to control the energy incident on certain regions in a treated subject. The ultrasonic frequencies of hyperthermia beams derived from individual transducers are randomly angle modulated so the energy of adjacent far field focused beams overlaps to a greater extent than focused coherent beams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.