Journal of Medical Physics
ORIGINAL ARTICLE
Year
: 2015  |  Volume : 40  |  Issue : 1  |  Page : 13--17

Monte Carlo-based dose calculation for 32 P patch source for superficial brachytherapy applications


Sridhar Sahoo1, Selvam T Palani1, SK Saxena1, D A R Babu2, A Dash2 
1 Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai, Maharashtra, India
2 Isotope Production and Applications Division, Bhabha Atomic Research Centre, Mumbai, Maharashtra, India

Correspondence Address:
Sridhar Sahoo
Radiological Physics and Advisory Division, CT CRS Building, Bhabha Atomic Research Centre, Mumbai 400 094,
India

Skin cancer treatment involving 32 P source is an easy, less expensive method of treatment limited to small and superficial lesions of approximately 1 mm deep. Bhabha Atomic Research Centre (BARC) has indigenously developed 32 P nafion-based patch source (1 cm Χ 1 cm) for treating skin cancer. For this source, the values of dose per unit activity at different depths including dose profiles in water are calculated using the EGSnrc-based Monte Carlo code system. For an initial activity of 1 Bq distributed in 1 cm 2 surface area of the source, the calculated central axis depth dose values are 3.62 Χ 10 -10 GyBq -1 and 8.41 Χ 10 -11 GyBq -1 at 0.0125 and 1 mm depths in water, respectively. Hence, the treatment time calculated for delivering therapeutic dose of 30 Gy at 1 mm depth along the central axis of the source involving 37 MBq activity is about 2.7 hrs.


How to cite this article:
Sahoo S, Palani ST, Saxena S K, Babu D, Dash A. Monte Carlo-based dose calculation for 32 P patch source for superficial brachytherapy applications.J Med Phys 2015;40:13-17


How to cite this URL:
Sahoo S, Palani ST, Saxena S K, Babu D, Dash A. Monte Carlo-based dose calculation for 32 P patch source for superficial brachytherapy applications. J Med Phys [serial online] 2015 [cited 2021 Dec 1 ];40:13-17
Available from: https://www.jmp.org.in/article.asp?issn=0971-6203;year=2015;volume=40;issue=1;spage=13;epage=17;aulast=Sahoo;type=0