Flashcards in Monitoring room and patient Deck (22)
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1
Where are emergency procedures posted?
At the machine
2
What are the states of operational status of the control console?
-stand by
-prep
-ready
-beam on
3
Why are interlocks used?
designed to protect patient, staff, and equipment
4
True/ False
More electrons are used during photon mode
true
5
In what time can 2Gy be given?
.03 sec @ 4,000/ min
6
True/ False
Treatment w/o a flattening filter is much faster
true
7
What kinds of new technologies are there?
-conformal therapy (older)
-multileaf collimation/ wedge
-Electronic portal imaging (epid)
-on board imagers
-stereotactic rad therapy
-IMRT
-tomotherapy
-IGRT
8
Conformal
-dose profile
-arc therapy
--treatment at many angles, less dose per angle
-IMRT: inverse planning system
9
MLC
usually made of tungsten
-smaller= more precise
-rounded on the end
10
Dynamic edge
upper collimator replaces the wedge
-curved with divergence of the beam
11
Epid
MV
12
OBI
KV
13
Stereotactic
radiosurgery
-can be up to 3-8 hours
-very precise treatment
*AVM can be treated with rad
14
Tomotherapy
bimodal: either open or shut
6 MV
treat with high radiation
very conformal
somewhat limited
15
Rapid arc treatment plan
varian
usually 1-3 arcs
*more time
16
IGRT
Image Guided Radiation Therapy
infrared tracking
track real time during treatment
*put images over each other to show how to shift
17
Record and verify
Allows pt info in machine from treatment planning to treatment machine
-therapist checks it
-helps catch incorrect set ups
-record pt set up data
-helps reduce errors
--import and export data
18
classes of hazards
class 1 and class 2
-defined by the FDA
19
Class 1-
causing death or serious injury
20
class 2
hazards, serious injury low
21
d max depth=?
point of equilibrium
22
