ABSTRACT
The technologies of delivering intensity modulated radiation therapy (IMRT) in slices are known as rotation IMRT or tomotherapy. Purists may argue about the precise terminology but serial tomotherapy and spiral tomotherapy are related and usually reviewed together. The tomotherapy machine of the University of Wisconsin is a purpose-designed technology which also uses a multivane intensity-modulating collimator (MIMiC)-like collimator to deliver a single slit of variable modulation with the variation controlled by the dwell time of the vanes. K. Ruchala et al have described how megavoltage computed tomography images can be obtained on the University of Wisconsin tomotherapy workbench using the radiation which is also used for treatment. T. Kron et al have compared plans created for tomotherapy with IMRT plans created using the Theraplan Plus treatment-planning system. The NOMOS MIMiC technique for IMRT with its associated planning system, originally known as PEACOCKPLAN, as CORVUS, was introduced 12 years ago in 1992.
