| 摘要 |
<p>A method, a radiation power profile (P M (t)) and an apparatus for phototherapy of tissue are provided, in or by which a first pulse (8) of radiation with a phototherapeutic wavelength is applied to the tissue. The emitted power level of the first pulse is controlled to apply a radiation dose to the tissue with a predetermined radiation power profile (P M (t)). The first pulse comprises at least a first power level (P 8A ) for a first portion (T 8A ) and a second power level (P 8B ), different from the first, for a second portion (T 8B ) of the first pulse. The first and second power levels define at least a portion of said radiation power profile. A series of micropulses (9) is provided to obtain and define the first pulse (8) as a macropulse (8). The micropulses have a number of pulse parameters selected from a group comprising pulse power (P m ), pulse power density (p m ), pulse energy (E m ), pulse duration (T m ) and interpulse interval (DT µ ). A variation of at least one of said pulse parameters in at least a portion of said series of micropulses is controlled to define said predetermined radiation power profile (P M (t)) of said macropulse.</p> |
