-
The lateral ventricles are located within the:
Cerebral hemispheres
-
The area of the cerebrum responsible for sensory and association is the
parietal area
-
The sense of smell is conveyed by the
Olfactory nerve (cranial nerve I)
-
A glioma spreads by means of
local invasion
-
Which of the following brain tumors is seen more frequently in adults
Glioma
-
Which of the following tumors ave the tendency to spread via CSF
Medulloblastoma
(also ependymoma and pineal)
-
Single dose stereotactic radiosurgery is most appropriate for:
solitary 2 cm primary brain tumors
-
Which of the following is not a symptom of intracranial tumors?
Headache
ICP
seizures
Nocturia
- Headache
- ICP
- seizures
- Nocturia
-
The primary management modality for primary brain tumors:
surgery
-
which of the following are symptoms of pituitary adenomas?
a)Uncontrollable diabetes
b)Visual disturbances
c)sinus pressure
d)a and b only
e)all of the above
- a)Uncontrollable diabetes
- b)Visual disturbances
- c)sinus pressure
- d)a and b only
- e)all of the above
-
A primary spinal cord tumor located in the lumbo-sacral region may be demonstrated by:
- incontinence, impotence
- radiating pain down the legs
-
Facial pain could be associated with primary CNS tumor near cranial nerve:
VII(facial)
-
The tolerance dose TD5/5 for the lens of the eye is:
5-10 Gy
-
The tolerance dose TD5/5 for the optic nerve or chiasm is:
50 Gy
-
Local hair loss and erythema are expected side effects from cranial irradiation-patients should be advised to:
- Use mild shampoo or water only for washing
- (NO razor, hot towels,, keratosis cream)
-
Symptoms of brain tumors commonly include dizziness, diplopia, and seizures. Patients should be advised to come to RT with______.
someone to accompany each treatment
-
Involvement of cranial nerve____may manifest as dysphagia.
IX(glossopharyngeal)
-
During primary brain irradiation, dose to normal brain tissue should be kept below:
60 Gy
-
Why don't primary brain tumors spread outside the CNS while several primary tumors from other sites metastasize to the brain?
CNS is self contained and mostly protected by blood-brain barrier. However, primary tumors from outside the CNS can travel to the brain via blood.
-
Noncoplanar beam arrangements are useful in treating pituitary adenomas. What is the advantage or traditional coplanar arrangements?
Non coplanar beam arrangements allow for more conformal dose
-
Why is metastatic brain treatment for whole brain while primary brain is with a 2 cm margin?
Metastatic brain tumors, unlike primary brain tumors, are multi-focal and subclinical disease is assumed present throughout the whole brain.
-
If manual calcs are performed, what information is needed?
- output
- field size
- field size factor
- prescribed dose
- attenuating factors(WF,TF, CF, etc)
- TAR, or TMR
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