MTR302/A - R302F/A - R302L/A DHHS
MANUALE ISTRUZIONI / INSTRUCTION MANUAL
Modello/Model R302/A
Compliance Verification
3
R302/A
- Compliance V
erification
Ralco
srl
(273 mm - 10.75"). Place the input area of the RAD-CHECK at an equal distance from the
collimator window. Collimate the beam to an area slightly larger than the detector.
b) Select a tube potential of 100 kVp and appropriate mA and seconds, with no added filtration
in the beam make an exposure and record the reading. Using a set of several sheets of 1100
Aluminium Alloy, each having a thickness of 0.5 or 1.0 mm, tape the filtration to the window
of the collimator. Make an exposure for each increments of filtration and record the reading.
c) Plot the exposure readings (log scale) versus the total added filtration thickness on semilog
paper; see the sample hereunder.
d) Verify that HLV values in the useful beam for the above specific tube potential is not less
than the values shown in
Table - Minimum Filtration Requirement - Beam Quality (Hvl)
.
V
ISUAL
D
EFINITION
OF
X-
RAY
V
ERSUS
L
IGHT
F
IELD
Chapter -
C
OLLIMATOR
C
ALIBRATION
- paragraph -
Light-Field to X-ray Field Alignment
.
F
IELD
S
IZE
I
NDICATION
Chapter
: A
DJUSTMENTS
- paragraph
Field Size Indication.
C
ROSSHAIR
A
LIGNMENT
Chapter
: A
DJUSTMENTS
- paragraph
Crosshair Alignment.
L
IGHT
F
IELD
I
LLUMINATION
I
NTENSITY
a) When a light field simulating the X-Ray field is used the illumination provided at 100 cm.
cannot be less than : 160 lux (21 CFR 1020.31 (d) (2) (ii).
ge
neral
e\12_
ve
rif_
conf_gra
ph.gif