IntensityModulated
Intensity-modulated refers to the deliberate variation of the strength of a beam or signal across its cross-section or over time. In medical physics, the term is most commonly encountered as intensity-modulated radiation therapy (IMRT), a cancer treatment technique that shapes the delivered dose to the tumor while sparing surrounding healthy tissue.
IMRT achieves modulation by adjusting beam fluence with multileaf collimators, dynamic shaping, and sometimes changing the
Clinical advantages include improved target coverage with sharper dose gradients and reduced exposure of normal tissues,
Limitations include increased planning complexity, longer or more involved quality assurance, and sensitivity to patient setup
Outside radiotherapy, the concept of intensity modulation appears in optics and imaging to adjust light distribution,