The most commonly occurring cancer in the United States is
lung cancer
When an immobilization device is needed, it is best to first determine the _______, and then________.
first determine beam orientation THEN build the device
It is important to reproduce the patient's position as it was during________.
the simulation procedure
Opposed anterior and posterior fields in the chest invariably cause a (higher/lower?) dose near the (cephalad/caudal) margin of than at the ______.
higher dose near the cephalad margin of the CAX
A lung boost is often delivered via_____
opposed oblique fields
Treatment fields in the chest should be designed with_______in mind.
respiratory motion
Tumors in the lower 2/3 of the esophagus can be boosted via_________
A posterior and two anterior obliques
Aligning two points separated by a long distance (is/is not?) a reliable method to reproduce a patient's position.
Is a reliable method
In setting up opposed oblique fields to treat a lung tumor it is important to know_______.
The SSD for each field
The number of US women who will develop breast cancer is approximately one in ______.
1/10
The regional lymph nodes in breast cancer are:
internal mammary
supraclavicular
axillary
In most breast treatment techniques, field matching is a problem between:
Between the internal mammary and the tangential field
Between the tangential and the supraclavicular fields
The couch angle necessary to avoid bean divergence from the tangential fields into the SCV field depends on the(list 2 things)
1)length of the tangential field in the direction of the SCV field
2)distance
To avoid beam divergence into the tangential fields into the SCV field the (foot/head) of the couch is turned(towards/away) from the collimator(gantry).
foot of couch is turned AWAY from the collimator
To avoid beam divergence into the lung by tangential fields the CAXs can be separated by slightly(more/less?) than _______degrees.
separated by slightly MORE than 180 degrees
Multiple adjacent electron fields to treat a chest wall recurrence should be considered ONLY if _______is available.
proper dosimetry
A boost is sometimes delivered to the tumor bed in breast cancer using
an electron beam or an interstitial implant
(also Accuboost)
Cardiac toxicity from breast irradiation is __________.
sometimes a serious problem
The internal mammary nodes are sometimes treated in a separate field using an electron or photon beam or are_______;
included in the tangential fields
The most important considerations to avoid radiation-induced pneumonitis is(name 3):
10total dose
2)fractionation schedule
3)volume of irradiated lung
Author
jaxkaty5437
ID
239834
Card Set
Treatment Planning Chapter 11-Thorax and Breast (Bentel)