| 摘要 |
A system for ablating tissue lining a body cavity, comprises a source of diffusive medium including a plurality of scattering particles suspended therein and a medium introduction device coupled to the source of diffusive medium, a distal end of the medium introduction device being insertable into the body cavity for introduction of the diffusive medium thereinto in combination with a source of radiation energy which, when the system is in an operative configuration, remains outside the body and a wave guide coupled to the source of radiation energy to transmit the radiation energy from the source of radiation energy into the diffusive medium, a frequency of the radiation energy being matched with optical characteristics of the diffusive medium and scattering particles so that the radiation energy passes through the diffusive medium with out substantial absorption therein and is reflected from the scattering particles without substantial absorption therein.
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