RADIATION THERAPY EXAM 1 UPDATED QUESTIONS AND ANSWERS
What is the Goal of Radiation Therapy - CORRECT ANSWER✅✅Is to sterilize a targeted tumor
completely while preserving the integrity of surrounding normal structures.
Principles of Radiation Therapy - CORRECT ANSWER✅✅High-energy ionizing radiation destroys the
cancer cell's ability to grow and multiply. Some cells are directly damaged by the ionizing rays or
particles. More cells are indirectly affected when the ionizing rays or particles penetrate the cell's
nucleus and interact with the water content of the nucleus to form oxygen radicals.
Radiosensitivity of Cancer Cells - CORRECT ANSWER✅✅Radiosensitivity of cells depend on several
factors:
Type of Cell
Phase of the Cell Cycle
Division rate of the cell
Degree of differentiation
Oxygenation
Radiation Therapy Limitations - CORRECT ANSWER✅✅Body tissues have limits to the amount of
radiation that can be tolerated. Exceeding those limits can result in serious complications.
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Principles of Radiation Therapy - CORRECT ANSWER✅✅Radiation dose is determined by:
Radiosensitivity of the tumor.
Normal tissue tolerance.
Volume of tissue to be irradiated.
- CORRECT ANSWER✅✅Radiation generates highly reactive free radical molecules that irreparably alter
the cell's DNA structure, thereby rendering the cell incapable of proliferation.
Radiation Therapy - CORRECT ANSWER✅✅Factors which decide the choice of modality to be used:
, General condition of patient
Extent of Disease
Histologic nature of tumor
What are the treatment types - CORRECT ANSWER✅✅Types of Treatment
Radical - Curative - Definitive
Combined modality
Prophylaxis
Palliative
Radical -Curative -Definitive - CORRECT ANSWER✅✅An attempt to remove all of the malignancy
present.
Early stages (I and II)
Some stage III
Seven Factors in the Decision To Treat for Cure - CORRECT ANSWER✅✅Type of tumor
Condition of patient
Age of patient
Stage of tumor
Extent of disease
Availability of treatment facilities
Patient's consent
Palliative Radiation Therapy - CORRECT ANSWER✅✅Shorter courses
Lower doses
Symptom relief
bone pain
What is the Goal of Radiation Therapy - CORRECT ANSWER✅✅Is to sterilize a targeted tumor
completely while preserving the integrity of surrounding normal structures.
Principles of Radiation Therapy - CORRECT ANSWER✅✅High-energy ionizing radiation destroys the
cancer cell's ability to grow and multiply. Some cells are directly damaged by the ionizing rays or
particles. More cells are indirectly affected when the ionizing rays or particles penetrate the cell's
nucleus and interact with the water content of the nucleus to form oxygen radicals.
Radiosensitivity of Cancer Cells - CORRECT ANSWER✅✅Radiosensitivity of cells depend on several
factors:
Type of Cell
Phase of the Cell Cycle
Division rate of the cell
Degree of differentiation
Oxygenation
Radiation Therapy Limitations - CORRECT ANSWER✅✅Body tissues have limits to the amount of
radiation that can be tolerated. Exceeding those limits can result in serious complications.
Emami Article
Qualtrex
Principles of Radiation Therapy - CORRECT ANSWER✅✅Radiation dose is determined by:
Radiosensitivity of the tumor.
Normal tissue tolerance.
Volume of tissue to be irradiated.
- CORRECT ANSWER✅✅Radiation generates highly reactive free radical molecules that irreparably alter
the cell's DNA structure, thereby rendering the cell incapable of proliferation.
Radiation Therapy - CORRECT ANSWER✅✅Factors which decide the choice of modality to be used:
, General condition of patient
Extent of Disease
Histologic nature of tumor
What are the treatment types - CORRECT ANSWER✅✅Types of Treatment
Radical - Curative - Definitive
Combined modality
Prophylaxis
Palliative
Radical -Curative -Definitive - CORRECT ANSWER✅✅An attempt to remove all of the malignancy
present.
Early stages (I and II)
Some stage III
Seven Factors in the Decision To Treat for Cure - CORRECT ANSWER✅✅Type of tumor
Condition of patient
Age of patient
Stage of tumor
Extent of disease
Availability of treatment facilities
Patient's consent
Palliative Radiation Therapy - CORRECT ANSWER✅✅Shorter courses
Lower doses
Symptom relief
bone pain
