GTV Study guides, Class notes & Summaries

What is the TD 5/5 for the kidney? - Answer-23 Gy What would a QA level 1 action item require? - Answer-Inspection, but treatment can continue What is the backscatter factor at the level of Dmax? - Answer-Tissue Air Ratio (TAR) What technique can be used to accomplish forced shallow breathing? - Answer-Gating What are the parts of the oral cavity? - Answer-Floor of the mouth, retromolar trigone, gingiva, anterior 2/3 of tongue, hard palate What is the tolerance for gantry & collimator angl...

Goal of radiation Correct Answer: - to irradiate a predefined target volume while minimizing exposure to adjacent normal tissues. - Radiation oncologists and medical oncologists collaborate to determine overall goals and treatment approaches. - Multiple diagnostic procedures are employed to define the tumor volume and prescribe the correct dose of radiation. - Radiation physicists, dosimetrists, oncologists, and therapists use sophisticated hardware and software to model geometric an...

SBRT lung fractionation - ANS 6-30 Gy in 1-5fx 5 Fx x 10 Gy 4 Fx x 12 Gy 3 Fx x 20 Gy Dose heterogeneity - ANS 1. Overlapping beams with tight margin will put high doses in the center of the target. 2. High Doses in Center may not help radiobiologically but there is no particular disadvantage. 3. Higher dose of radiation administered anywhere within the tumor will enhance the composite cytotoxic effect of and increase the TCP. 4. EUD (Equivalent Uniform Dose) is more rob...

What is the TD 5/5 for the kidney? - correct answer 23 Gy What would a QA level 1 action item require? - correct answer Inspection, but treatment can continue What is the backscatter factor at the level of Dmax? - correct answer Tissue Air Ratio (TAR) What technique can be used to accomplish forced shallow breathing? - correct answer Gating What are the parts of the oral cavity? - correct answer Floor of the mouth, retromolar trigone, gingiva, anterior 2/3 of tongue, hard palate W...

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