IONIZATION CHAMBER INVESTIGATIONS ON THE DETERMINATION OF THE ISODOSES IN PENDULUM IRRADIATION WITH ULTRAHARD X RAYS OF A 15-Mev ELECTRON ACCELERATOR BETATRON. III. INVESTIGATION ON THE "HORIZONTAL" PHANTOM FOR THE OBTENTION OF A LARGER IRRADIATION FIELD

Journal Article · Sun Jan 01 04:00:00 EST 1961 · Strahlentherapie (West Germany)

OSTI ID:4091746

Heinzler, F; Mohr, H L

For the enlargement of the irradiation field of the 15.5Mev x radiation of the betatron the field of the "block" in the water phantom was measured. With filter 3 the relatively large field is sufficiently homogenized with a pendulum angle of 90 ts and a pendulum axis of 10 cm; resulting in an increased immigration of the dose maximum and an enlargement of the 80% isodose. With a pendulum angle of 60 ts there is with filter 3, corresponding to the widening of the field, an enlarging of the 80% isodose. The possibilities of using these fields are briefly discussed. The calculation of the focal dose from the position of the dose maximum by corresponding pendulum angles by means of roentgen value, filter, and depth dose factor can from earlier reported statements be made with sufficient exactitude. (auth)

• Research Organization: Klinik fur Medizinische Strahlenkunde, Medizinische Akademie, Dusseldorf
• NSA Number: NSA-15-009155
• OSTI ID: 4091746
• Journal Information: Strahlentherapie (West Germany), Journal Name: Strahlentherapie (West Germany) Vol. Vol: 114; ISSN STRAA
• Country of Publication: Country unknown/Code not available
• Language: German

Related Subjects

BETATRONS
ELECTRONS
ENGINEERING AND EQUIPMENT
FILTERS
IONIZATION CHAMBERS
MATHEMATICS
MEASURED VALUES
MOCKUP
PHANTOMS
RADIATION DOSES
RADIOTHERAPY
WATER
X RADIATION