The lateral ventricles are located within the:
The area of the cerebrum responsible for sensory and association is the
The sense of smell is conveyed by the
Olfactory nerve (cranial nerve I)
A glioma spreads by means of
Which of the following brain tumors is seen more frequently in adults
Which of the following tumors ave the tendency to spread via CSF
(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?
The primary management modality for primary brain tumors:
which of the following are symptoms of pituitary adenomas?
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:
The tolerance dose TD5/5 for the lens of the eye is:
The tolerance dose TD5/5 for the optic nerve or chiasm is:
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.
During primary brain irradiation, dose to normal brain tissue should be kept below:
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?
- field size
- field size factor
- prescribed dose
- attenuating factors(WF,TF, CF, etc)
- TAR, or TMR