Table of

.................................................................................................................................................... VII ACKNOWLEDGMENTS .................................................................................................................................... IX LIST OF FIGURES ...............................................................................

An algorithm has been developed to calculate the collimator jaw motions required to generate intensity-modulated fields far use in conformal radiotherapy. The dynamic technique allows arbitrary intensity profiles to he generated using a single unidirectional sweep of the collimators. The collimator jaws have independent motion, so that an aperture of variable width is scanned across the field. ...

Angiosarcoma of the scalp is a rare aggressive tumor that affects elderly patients. Chemoradiation is the treatment of choice for multicentric and extensive disease. The shape of the scalp represents a dosimetric challenge in terms of achieving a homogeneous concave dose distribution with coverage of the entire target volume and an acceptable organs-at-risk sparing. We report a case of an 81-ye...

abstract background: chest wall irradiation for early breast cancer affects forced vital capacity (fvc), forced expiratory volume in the first second of expiration (fev1) and may change peripheral oxygen saturation (spo2). in our institute chest wall is irradiated with a four field technique: two tangential and two oppositional anterior and posterior supraclavicular fields. regional recurrence ...