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Questions related from Avinash Rao Kuppa
I would like to understand if an Monty Carlo simulation is made for an External beam radiotherapy system (6 MeV) only with primary and secondary collimators, will the flatness vary because of not...
02 August 2016 9,235 5 View
Can any one help me if a DRR (Digitally reconstructed radiograph) image will be provided by TPS ? If yes then will there be a DICOM tag no for such images. If TPS doesn't provide DRR image where...
14 December 2015 9,028 5 View
When an IMRT treatment is planned for 20 fractions and if we want to check the cumulative DVH delivered after 10 fractions such that we can do an off line adaptive planning. What is the standard...
12 June 2015 874 5 View
In the current radiotherapy machines which deliver VMAT, IMRT, SRS or SBRT, what is the role of field light. In a conventional 3D-CRT it is understood the requirement of field light, where you get...
26 March 2015 7,692 7 View
On a LINAC for flattening the field a flattening filter is used. And for different energy levels we require different flatteners which is understandable. But why do we require different flattening...
15 May 2014 1,509 13 View
The majority of stereotactic imaging units combined with a LINAC use two sets of KV beams which are placed 90 degrees apart for getting a stereotactic image. If the angle between the KV beam...
15 April 2014 6,204 3 View
Usually all conventional radiotherapy LINAC have a collimator rotation, like varian elekta etc. But in the recent machines like Tomotherapy or VERO brain lab, the collimatort rotation is missing....
12 February 2014 8,401 5 View
I would like to know how to design a bow tie filter for CBCT, the material to be used for the same.
03 February 2014 7,094 1 View
