Electromagnetic position detection of high-dose rate brachytherapy applicator

摘要

The shrubbery possible applicator in order to guide the radioactivity seed or source 66 in the target territory has one guide channel 12 at least. Plural image pickup possible standards 40, adjoining to the target territory, in order to be installed in the patient, it is constituted. Electromagnetic sensor 18, 20, 22, 20 ' and 42, is loaded onto the applicator and image pickup possible standard. The electromagnetic tracking system, applicator on-board sensor decides the relative position of 18, 20, 22, 20 ' and standard tower sensor 42. Position specific processor 52 is combined with the high resolution picture, (56) the map of the sensor is formed. Is change in sensor position, or watches relative processor 70, modification (74) forms the modification 72 of the movement correction which is done in the planned picture 76 which the planned picture is modified. Small radiation source medical therapy remedy processor 60, in order to control the autoloader 64 which makes radioactive source or seed move 66 via the channel 12 of applicator 10, the planned picture or from the planned picture which is modified, forms remedy plan 60a.