Campep Credit Quiz -- Practical Guidelines For Tps Commissioning And Qa
Please take this quiz if you would like to receive 1 CAMPEP credit for attending the webinar, Practical Guidelines for TPS Commissioning and QA. A score of 8/10 or higher is required to receive credit. If you score below 80%, hit the "Try Again" button when your results appear. Contact [email protected] Com with any questions.
- 1.1.TG-244 generally covers issues related to...
- A.
Beam, IGRT and mechanical component quality assurance
- B.
Beam data acquisition techniques
- C.
Dosimetric commissioning including beam data acquisition, modeling and validation
- D.
Evaluation of heterogeneity correction accuracy
- 2.For IMRT/VMAT verification, TG-244 recommends using...
- A.
Any dosimeter available to the physicist
- B.
Ion chambers and electronic arrays with sufficient resolution
- C.
Ion chamber arrays only
- D.
Ion chamber and film only
- 3.What initial data set would you use when commissioning a new dose algorithm?
- A.
Collect minimum data according to vendor’s guidelines
- B.
Use vendor-provided golden data
- C.
Collect a subset of vendor-recommended data to spot-check golden data
- D.
Collect vendor-recommended data set plus extra for validation comparisons
- 4.You would expect dose measured in water at a depth of 5 cm , 2 cm off-axis in a 20x20 cm2 field to agree with the TPS no worse than to within...
- A.
1%
- B.
2%
- C.
3%
- D.
4%
- E.
5%
- 5.You would expect dose measured in water at a depth of 5 cm , 2 cm off-axis in a 20x20 cm2 field with a 60° physical wedge to agree with the TPS no worse than to within
- A.
1%
- B.
2%
- C.
3%
- D.
4%
- E.
5%
- 6.TG-244 minimum expectation of TPS dose accuracy outside the primary field is...
- A.
2% of the central axis dose
- B.
3% of the central axis dose
- C.
2% of the local dose
- D.
3% of the local dose
- 7.TG-244 assumes that for dose calculations in the presence of inhomogeneities (Lung), the user will *not* use which algorithm:
- A.
Pencil beam
- B.
Collapsed Cone convolution
- C.
Analytical Anisotropic Algorithm
- D.
Grid-Based Boltzmann Solver
- E.
None of the above – any inhomogeneity correction is sufficiently accurate in practice
- 8.To validate the inhomogeneity correction portion of the algorithm, TG-244 asks the user at a minimum...
- A.
To compare the TPS dose to a well-benchmarked Mote-Carlo code for a variety of clinical conditions.
- B.
To perform measurements in an anthropomorphic thoracic phantom with film and ion chamber for a variety of clinical conditions.
- C.
To perform a set of off-axis dose measurements in a simple heterogeneous phantom for a 30x30cm2 beam.
- D.
To spot-check inhomogeneity correction on a central axis in a simple phantom for a smaller (eg 5x5 cm2 beam).
- E.
Cite a reference on inhomogeneity correction accuracy for a same type algorithm in the commissioning report.
- 9.While validating IMRT/VMAT, TG-244 mandates the gamma analysis passing rate of at least 90% for the following criteria combination:
- A.
1% dose-error / 1mm distance to agreement
- B.
2%/2mm
- C.
3%/3mm
- D.
5%/3mm
- E.
None of the above
- 10.For routine QA, a plan is recalculated and should agree with the reference dose distribution to within...
- A.
1% dose-error / 1mm distance to agreement
- B.
2%/2mm
- C.
3%/3mm
- D.
5%/3mm
- E.
None of the above
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