Sökning: "Model-Based Dose Calculation Algorithms"

Hittade 2 uppsatser innehållade orden Model-Based Dose Calculation Algorithms.

1. 1. Investigation of a Collapsed Cone Superposition Algorithm for dosimetry in brachytherapy

   Master-uppsats, Stockholms universitet/Fysikum

   Författare :Freja Alpsten; [2021]
   Nyckelord :Brachytherapy; Collapsed Cone; Model-Based Dose Calculation Algorithms; Radiotherapy;

   Sammanfattning : Background & Purpose: The current standard dosimetry in brachytherapy treatment planning, the TG-43 formalism, ignore the presence of non-water media and finite patient dimensions. This can cause clinically relevant errors in dose estimates. LÄS MER

3. 2. Three material decomposition in dual energy CT for brachytherapy using the iterative image reconstruction algorithm DIRA : Performance of the method for an anthropomorphic phantom

   Master-uppsats, Institutionen för medicinsk teknik; Tekniska högskolan

   Författare :Robin Westin; [2013]
   Nyckelord :DECT; Iterative reconstruction; Tissue decomposition; Numerical stability; Uncertainty propagation;

   Sammanfattning : Brachytherapy is radiation therapy performed by placing a radiation source near or inside a tumor. Difference between the current water-based brachytherapy dose formalism (TG-43) and new model based dose calculation algorithms (MBSCAs) can differ by more than a factor of 10 in the calculated doses. LÄS MER