Cytosine bonds only with which of the following nitrogenous organic bases? - Answers guanine
This target volume accounts for internal organ movement, such as breathing. - Answers ITV - Internal
Target Volume
RNA varies from DNA in composition as it has ________ instead of thymine. - Answers uracil
What is the dose-tissue response, at conventional fractionation, for Lhermitte's Sign? - Answers 2000 to
3000 cGy
This is the treatment port for what cancer? - Answers Whole brain
What is the dose-tissue response, at conventional fractionation, for laryngitis? - Answers 5000 cGy
What is the dose-tissue response, at conventional fractionation, for erythema? - Answers 20 Gy
To reduce the severity of any head and neck complication, the patient should be encouraged to avoid all
the following except: - Answers Room temperature and smooth foods and drinks
What is the dose-tissue response, at conventional fractionation, for dry mouth? - Answers 10 to 20 Gy
Multiple tumor types are included in the head and neck region. Which type of primary tumor is most
common? - Answers Squamous cell carcinoma
Identify the lymph node chain, with reference to breast cancer Tx, numbered 1. - Answers Internal
mammary
Which of the following are functions of the cell membrane?
1.protecting the contents of the cell form its environment
2.controlling the passage of water and other materials into the cell
3.allowing all substances to pass - Answers 1 and 2
"Interphase" consists of which of the following? - Answers G1, S, and G2
The "side rails" of the DNA molecule are composed of: - Answers sugars and phosphates
What is the end point when the TD 5/5 for the optic nerve is exceeded? - Answers Blindness
What healthy tissue is at most risk of radiation damage with treatment to the maxillary antrum? -
Answers Eye
The most common sign or symptom of oral cancer is: - Answers Ulceration
, For patients with carious teeth, when is dental work recommended when anticipating oral cavity
irradiation? - Answers Before treatment
Which is the most common type of cancer in the brain? - Answers Metastasis
Why is radiation therapy indicated in the majority of H&N cancers? - Answers Because the cancer is
often inaccessible by surgery
What is morbidity in the context of treatment modalities, such as radiation therapy and/or surgery, of
the H&N region? - Answers A diseased condition or state, and the adverse effects caused by medical
treatment
This is the expansion volume to account for uncertainty about tumor extent. It doesn't usually cross
natural body interfaces, unless invasion is suspected. - Answers CTV - Clinical Target Volume
Which is the most common primary brain tumor in adults? - Answers Glioma
Identify the lymph node chain, with reference to breast cancer Tx, numbered 2. - Answers
Supraclavicular
This is the volume that accounts for geometric (set-up variation) uncertainty about tumor extent. -
Answers PTV - Planning Target Volume
What is the end point when the TD 5/5 for the ear is exceeded? - Answers Serous otitis
If the cervical nodes are to be treated, as part of a H&N plan, which of the following techniques can be
employed to avoid beam entrance into the shoulders? - Answers Angle the treatment couch to avoid the
shoulders
What does the oropharynx region include?
1. base of tongue
2. tonsil
3. soft palate - Answers 1, 2, and 3
95% of oropharynx lesions are ... - Answers Squamous cell carcinoma
When treating oral cancers, the mouth stent or tongue blade (AKA: bite block) is used for multiple
reasons. The most common reason, to use a tongue blade, is to: - Answers Depress the tongue from
treatment
What is the most common site of a spinal cord compression? - Answers Thoracic spine
90 to 95% of cases of SVC Syndrome are caused by which of the following:
1. Lung Cancer