CTP/TP 1 Final (Exam 1&2 material) Questions with Detailed Verified Answers

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CTP/TP 1 Final (Exam 1&2 material)
Questions with Detailed Verified
Answers

Question:The slice thickness for CT obtained for Radiation Oncology are
typically:


Ans: 2.5 - 3mm


Question: CT Number for fat is:


Ans: -50


Question: CT number for water is:


Ans: 0


Question: CT numbers should be accurate within how many HU?


Ans: 3HU


Question: T or F. Helical CT typically will result in more motion artifact.


Ans: False


Question: T or F. Systematic errors include treatment preparation errors.

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Ans: True


Question: T or F. Random errors influence all fractions.


Ans: False


Question: T or F. Random errors include treatment execution errors.


Ans: True


Question: T or F. Systematic errors influence all fractions.


Ans: True


Question: T or F. Variation in patient positioning is typically not a problem
with the uncertainty of dose delivery.


Ans: False


Question: T or F. CT disadvantages include little soft tissue contrast.


Ans: True


Question: T or F. An advantage of Multi-Slice CT is less motion artifact.


Ans: True


Question: T or F. CT images provide better biochemical information than MRI.