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ADV IMG RADIATION ONCOLOGY THERAPY EXAM QUESTIONS AND ANSWERS
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What are the 3 principle modalities used in the treatment of cancer? - Answer-- Radiation Oncology/Therapy - Chemotherapy - Surgery *can used in combination or in different orders Even though these 3 principle modalities may be used in conjunction with each other, about how many percentage...

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ADV IMG RADIATION ONCOLOGY
THERAPY EXAM QUESTIONS AND
ANSWERS
What are the 3 principle modalities used in the treatment of cancer? - Answer--
Radiation Oncology/Therapy
- Chemotherapy
- Surgery

*can used in combination or in different orders

Even though these 3 principle modalities may be used in conjunction with each other,
about how many percentage of cancer patients are treated with radiation. - Answer-75%

However, radiation is generally used after surgery when a patient is deemed to be at
high risk for tumor recurrence in the surgical bed.

This form of treatment is also called radiation therapy. It is One of three primary means
of treating cancer - Answer-Radiation Oncology

A physician who specializes in the treatment of malignant disease with radiation. -
Answer-Radiation Oncologist

Cancer treatment plans consists of: - Answer-Diagnostic: diagnostic radiographs using
xrays, ct, MRI, PET, and sonograms are obtained to acquire info about the location and
anatomic extent of the tumor.

Biopsy: a tissue specimen is removed surgically

Pathology: A pathologist examines the tissue to determine whether the lesion is
cancerous. If cancer is diagnosed, treatment plan is determined by oncologists.

Patient and Oncologist discuss options and choose a course of treatment

Typical course of treatment: - Answer-- Most often delivered on a daily basis (M-F) for
2-8 weeks
- Length and dose are variable, dependent on if it is for cure or palliation treatment.
- Dose can range from 2000 cGy to 7600 cGy
- Delivered by small doses at a time (fractionation)

Fractionation can help minimize the acute toxic effect a patient experiences during
treatment and possible long-term effects of treatment. True or false - Answer-True

, What is consisted of the Radiation Oncology Team? - Answer-- Radiation Oncologist:
prescribes the quantity of radiation & determines the anatomic regions to be treated.

- Medical Physicist: Responsible for calibration and maintenance of the radiation-
producing equipment. Also advises physician about dosage calculations and complex
treatment techniques.

- Dosimetrists: Devises a plan for delivering the treatments in a manner to meet best the
physicians goals or irradiating the tumor while protecting vital normal structures.

- Radiation Therapists: Responsible for obtaining radiographs or CT scans that localize
the area to be treated, administering the treatments, keeping accurate records of dose
delivered each day, and monitoring the PT's physical and emotional well-being.

- Oncology Nurses: Educating patients about potential radiation side effects and
assisting PT with management of these side effects.

What is the goal of radiation oncology? - Answer-Deliver a high dose of radiation to very
specific area (tumor) without harming healthy tissue.

A team of oncologists, physicists, dosimetrists, radiation therapists, oncology nurses
must work together to achieve this.

Significant developments in radiation therapy includes: - Answer-1895 - Rontgen:
Discovery of xrays
1896 - Grubbe: First use of ionizing radiation in
treatment of cancer
Becquerel: Discovery of radiative emissions
by uranium compounds
1898 - M. & P Curie: Discovery of radium
1902 - Skinner: First documented case of cancer
"cure" using ionization radiation.
1906 - Bergonie and Tribondeau: Postulation of
first law of radiation sensitivity
1932 - Lawrence: Invention of Cyclotron
1934 - Joliot & Joliot-Curie: Production of artificial
radioactivity
1939 - Lawrence & Stone: Treatment of cancer PT
with neutron beam from cyclotron
1940 - Kerst: Construction of betatron
1951 : Installation of first cobalt-60
teletherapy units
1952 . : Installation of first linear acceleration

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