Radiation Therapy Beam Modulation Techniques

  • Arthur L. Boyer
Part of the Cancer Treatment and Research book series (CTAR, volume 93)


The label conformal therapy has been applied to a wide variety of three-dimensional treatment planning and delivery procedures. The original concept for conformai therapy was to limit the normal tissue dose by conforming the treatment field to the beam’s-eye view (BEV) projection of the target volume under continuous rotation of the gantry [1]. A multileaf collimator (MLC) is generally used to efficiently collimate the multiple fields. Initial clinical trials are in progress with a form of fixed-field conformai therapy that relies on BEV field shaping of six or more fixedgantry fields to reduce the volume of normal tissue irradiated around a target volume [2–4].


Monitor Unit Multileaf Collimator Gantry Angle Leaf Pair Conformal Therapy 
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© Springer Science+Business Media New York 1998

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  • Arthur L. Boyer

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