MR-guided breast tumor ablation and temperature imaging system
US7542793B2 · kind B2 · utility
12Cited by
24References
19Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 22, 2002 |
| Grant date | Jun 2, 2009 |
| Priority date | — |
| Expiry date | Jun 2, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/4804
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An MRI system is employed to aim an ultrasonic transducer at tissues to be treated and to produce images which enable the treatment of the tissues to be monitored. A pulse sequence is used which produces both a spin-echo NMR signal and a gradient-echo NMR signal and changes in phase between these two signals is measured and used to produce a temperature map. Changes in amplitude of the spin-echo NMR signal from a reference spin-echo NMR signal is used to produce images which indicate temperature changes in both fat and water. These temperature maps may be used to aim the heat treatment device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.