What is patient QA radiotherapy?
Background. Patient-specific intensity-modulated radiotherapy (IMRT) quality assurance (QA) is critically important to the successful implementation of IMRT. It ensures correct machine-sided delivery of the prescribed dose by checking the accuracy of dose calculation, plan transfer, and treatment delivery.
Why is QA needed in radiotherapy?
Each step in the integrated process of RT needs quality control and quality assurance (QA) to prevent errors and to give high confidence that patients will receive the prescribed treatment correctly.
What techniques are used in radiotherapy?
6.2 Radiotherapy Techniques
- Interstitial radiotherapy (brachytherapy) This technique is usually reserved for accessible, small tumours often in the mouth or oropharynx.
- External beam radiotherapy.
- 3-D conformal and stereotactic radiotherapy.
- Intensity modulated radiotherapy (IMRT)
What is a radiation treatment summary?
Radiation therapy (also called radiotherapy) is a cancer treatment that uses high doses of radiation to kill cancer cells and shrink tumors. At low doses, radiation is used in x-rays to see inside your body, as with x-rays of your teeth or broken bones.
What is patient QA?
A patient-specific quality assurance (QA) test is conducted to verify the accuracy of dose delivery. It generally consists of three verification processes: the absolute point dose difference, the planar dose differences at each gantry angle, and the planar dose differences by 3D composite irradiation.
What is patient specific QA?
A patient specific quality assurance program has been developed to facilitate the clinical implementation of intensity modulated radiotherapy (IMRT) delivered using a micro-multileaf collimator. The methodology includes several dosimetric tasks that are performed prior to the treatment of each patient.
What are advanced radiotherapy techniques?
We have made major contributions to modern high-precision radiotherapy techniques, such as intensity-modulated radiotherapy (IMRT) and image-guided radiation therapy (IGRT). These target radiation doses precisely to the shape of tumours, reducing toxicity and side-effects.
What is 3d CRT radiotherapy?
A procedure that uses a computer to create a 3-dimensional picture of the tumor. This allows doctors to give the highest possible dose of radiation to the tumor, while sparing the normal tissue as much as possible. Also called 3-dimensional conformal radiation therapy and 3-dimensional radiation therapy.
What is Gamma evaluation?
Abstract. The gamma-evaluation method is a tool by which dose distributions can be compared in a quantitative manner combining dose-difference and distance-to-agreement criteria.