GE Senographe DS Operator's Manual page 202

GE Healthcare
Revision 1
Specifications
2-7 Filters and anode tracks
Maximum current for each track/focal spot configuration:
The minimum filtration permanently installed in the useful beam of the X-ray tube is 0.008 mm aluminum
equivalent (8 µm aluminum equivalent) at 30 kV corresponding to the minimum thickness of beryllium of
the x-ray tube output window.
The switched filters are installed on a disk driven by a stepping motor which moves from one filter to the
other. Two different filters are supplied:
• Molybdenum: 0.03 mm,
• Rhodium: 0.025 mm,
Note:
The system electronics control the filters according to operator requirements in Manual mode, or
to software requirements in AOP mode
TARGET
Molybdenum
Molybdenum
Rhodium
2-8 Attenuation equivalence
Attenuation equivalence for components in the X-ray beam (in accordance with FDA HHS 21 CFR,
§ 1020.30; measurements made at a potential of 100 kVp, using an X-ray beam with an HVL of 2.7 mm
of aluminum)
2-9 Main characteristics of the grid
• Type: linear
• Number of lines: 31 line pairs/cm.
• Grid ratio: R 5 : 1.
• Focal length: F0 = 650 mm
Chapter 17
Focal spot
Large 100 mA max.
Small 40 mA max.
VOLTAGE
(kV)
30
30
30
Component
Magnification stand (1.5 and 1.8)
Image receptor support
Bucky cover
Stereotix positioner
Page no. 202
Senographe DS Acquisition System
Operator Manual 5307907-3-S-1EN
Track
Mo Rh
62 mA max.
35 mA max.
FILTER EQUIVALENCE
(half-value layer)
0.03 Mo 0.3 mm Al minimum
0.025 Rh 0.35 mm Al minimum
0.025 Rh 0.4 mm Al minimum
Al equivalence (mm)
less than 0.35
less than 0.2
less than 0.2
less than 0.3
17-specs.fm