GE AMX-II User Manual

GENERAL ELECTRIC MEDICAL SYSTEMS
AMX-H X-RAY UNIT
7-1576 SM A0654E
SECTION 16 DIAGNOSTIC SOURCE ASSEMBLY; INHERENT FILTRATION
To meet HEW requirements:
The half-value layer of the useful beam at 80 KVP shall be not less than 2.3mm aluminum.
NOTE:
on different types of instruments.
1. Position radiation probe of an integrating
radiation measuring instrument so that the
center of the active probe area is 12 inches
(304.8 mm) from the end of the collimator
and centered in the useful beam. Collimate
down to area of probe using light beam.
2. Keep other equipment at least 4” (101.6 mm)
away from probe to prevent radiation scatter
errors. Remove the 1.0 and 2.0 mm selective
filters from collimator.
3. Use technic factors of 80 KVP: 20 to 48 MAS.
MAS should be adjusted so that reading in
step 4 is approximately 3/4 scale.
sa 4. Make an exposure and measure radiation (total
R) with no added filters. This represents 100%
transmission level. Record readings.
sa 5. Place standard absorber 46-173632G1 in beam.
Absorber must be in collimator accessory rails.
Repeat exposure and record reading.
6. Divide reading in step 5 by reading in step 4.
a. If Ratio is greater than 0.5, then fixed
filtration must be left as is.
b. If Ratio is less than 0.5, then fixed filtra-
tion must be added (mandatory).
7. The 0.5 minimum ratio is mandatory. If fixed
filtration must be added, refer to Direction
13894, Test 13, Beam Quality.
8. Record Data on F-3382, Test 13.
Refer to Direction 13894, Part ll, Section 2 “Radiation Instruments” for specific information
DIAGNOSTIC SOURCE ASSEMBLY
—
A
i \ |
i | 12” (304.8 тт)
STANDARD poa
ABSORBER AA
| _— USEFUL BEAM
\
\
PROBE x FLOOR
\
20629-D11
ILLUSTRATION 4-11-50
RATIO
=
Reading
with
Standard
Absorber
Reading
without
Standard
Absorber
411-40

GE AMX-II Specifications

General

Brand	GE
Model	AMX-II
Category	Medical Equipment
Language	English