Advanced Brachytherapy Physics - Vienna 2016

The MC method … Choosing interaction site. The probability that a photon interacts within dx after travelling a distance x is μexp( μx) so that: -

Choosing interaction type. Interaction type is a discrete random variable of i values so that P i =μ i /μ total . So given r, I choose interaction j so that:

j= min{ j:

}

Figure from: Venselaar Baltas Meigooni Hoskin (Eds) , , , , Comprehensive Brachytehrapy: physical and clinical aspects. CRC Press, Taylor & Francis, © 2013