Essays about: "ımrt"

Showing result 16 - 20 of 21 essays containing the word ımrt.

1. 16. Dose Calculation Accuracy for a Flattening-Filter Free Photon Beam Implemented into Oncentra MasterPlan

   University essay from Lunds universitet/Sjukhusfysikerutbildningen

   Author : Sacha af Wetterstedt; [2008]
   Keywords : Strålterapi; Medicine and Health Sciences;

   Abstract : "Introduction For IMRT treatments, removing the flattening filter could be beneficial, as it would decrease the beam-on time required for delivering a certain dose. The aim of this work has been to assess the calculation accuracy obtained when implementing flattening filter free beam data into the treatment planning system Oncentra MasterPlan. READ MORE

3. 17. Independent Monitor Unit Calculations in Intensity Modulated Radiotherapy

   University essay from Lunds universitet/Sjukhusfysikerutbildningen

   Author : Helena Ramsing; [2007]
   Keywords : Strålterapi; Medicine and Health Sciences;

   Abstract : Independent dose calculations in radiotherapy are important as they help assure that the dose given to the patient is the same as the prescribed. The current version of software Radiation Verification Programme, RVP, does not take into account the effects that occur when a beam from a linear accelerator is moved off-axis. READ MORE

4. 18. Dosimetric pre-treatment verification with an electronic portal imaging device

   University essay from Medicinsk strålningsfysik (tills m KI)

   Author : Erik Wåhlin; [2006]
   Keywords : EPID dosimetry; IMRT pre-treatment verification; amorphous silicon;

   Abstract : A commercially available amorphous silicon electronic portal imaging device (EPID) was studied with regard to its dosimetric properties and to determine its usefulness as a tool for dosimetric pre-treatment verification of radiotherapy treatment fields. The dosimetric properties that were studied include reproducibility over time, linearity with dose, dose rate dependence and ghosting effects. READ MORE

5. 19. Dosimetric Verification of Intensity Modulated Radiotherapy Treatment Plans with Radiographic Film

   University essay from Lunds universitet/Sjukhusfysikerutbildningen

   Author : Sonny La; [2004]
   Keywords : Strålterapi; Medicine and Health Sciences;

   Abstract : "Intensity modulated radiation therapy (IMRT) is a fairly new modality in the treatment of cancer with radiotherapy. The original idea is Swedish and has existed for more than 20 years. But it is only in recent years that clinics have implemented the IMRT technique. READ MORE

6. 20. Intensity Modulated Radiotherapy Treatment Planning with OTP/TMS for Head&Neck Carcinomas in the ARTSCAN study

   University essay from Lunds universitet/Sjukhusfysikerutbildningen

   Author : Petra Ambolt; [2004]
   Keywords : Strålterapi; Medicine and Health Sciences;

   Abstract : Cancer är en otrevlig sjukdom, som drabbar många människor. Man söker ständigt nya och bättre sätt att bota patienter eller åtminstone lindra sjukdomens framfart. Ett vanligt sätt att behandla cancer är med strålning. Strålningen kan bestå av sk fotoner. READ MORE