[Dosimetric studies of 192Ir line sources and the mathematical presentation of the dose distribution].
The dose distribution of a "line-shaped" 192Ir-source was measured in 1,152 measuring points in a water phantom. Using regression analysis the analytical description of dose distribution was obtained. Accomplished comparison measurings with a solid phantom of miramide in 45 measuring points show that the dose distribution can be reproduced well by solid phantom measurings. Taking an ideal line source distribution as a basis, the r-dependence of correction factor, obtained by regression analysis, refers to a dispersion effect. The angle-dependent deviation of dose distribution from the ideal line source can be described by cos-terms with the single and double angle between line source axis and measuring point.
Günther
R
R
Walter
W
W
Kloetzer
K H
KH
Kob
D
D
Schindler
J
J
D001918:Brachytherapy; D005260:Female; D005833:Genital Neoplasms, Female / Q000532:radiotherapy*; D006801:Humans; D007496:Iridium Radioisotopes / Q000627:therapeutic use*; D008961:Models, Structural; D011879:Radiotherapy Dosage
D007496:Iridium Radioisotopes
Dosimetrische Untersuchungen der "linienförmigen" 192Ir-Quelle und die mathematische Darstellung der Dosisverteilung.