X omat 5 films

The Ir-192 source used in this study is 3.5 mm long with a diameter of 0.6 mm. It is covered by stainless steel with an outer diameter of 1.1 mm. The source is attached to a remote after-loading machine (MicroSelectron HDR, Nucletron, Netherlands) by a stainless steel wire. Fig. 1 shows the geometric diagram of the source. Fig. 2 shows the Henschke applicator, which comprises of a tandem and ovoid son its two sides. The applicator functions as the translation pathway for the source during cervical cancer treatment. The ovoid contains tungsten alloy as a shielding material with a density of 17.0 g/cm³, the composition of which is 91% tungsten, 4.5% nickel, and 4.5% iron. Kodak X-Omat V films are used to capture the shielding structure and layout inside the ovoid of the Henschke applicator. MCNPX code is used to simulate the Henschke applicator and Ir-192 source. With the aid of MCNPX Visual Editor, the applicator model set up is shown in Fig. 2.

The ¹⁹²Ir source used in this study had an active length of 3.6 mm, a diameter of 0.65 mm, and a density of 22.42 g/cm³; it was encapsulated by a stainless steel outer cover with an outer diameter of 0.9 mm that was welded to a steel cable for attachment to a remote after-loading machine (microSelectron-HDR v2, Nucletron, The Netherlands). The air kerma strength of this source is 45,730 cGy.cm²/h (11.2 Ci) when first installed, and the GENIE TPS (microSelectron, Nucletron) was used. In the Henschke tandem and ovoid applicator, the ovoid contains tungsten alloy as a shielding material with a density of 17.0 g/cm³ and the following atomic composition: 91% W, 4.5% Ni, and 4.5% Fe. The geometry of the shielding structure inside the ovoid was obtained with the aid of Kodak X-Omat V films.