GE SENOGRAPHE 800T, Руководство оператора

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INTRODUCTION
GE Medical Systems SENOGRAPHE 800T
REV 6 om 2135575–100
1–5
2–2 Examination Arm
See Illustration 1–2. The Examination arm consists of:
1. X-ray Tube and Tube Housing Assembly.
2. The Collimator consists of the slot for the diaphragms. It also allows easy access to the
light bulb for easy replacement (see Chapter 3 – Section 1).
3. Guide Rail and Compression system including compression paddle and compression
paddle support.
4. Magnification Holes The Magnification plate is installed by latching the plate onto the
Receptor Arm in the holes provided for the selected magnification factor. To unlock the
magnification plate, press the lever located on the left of the mag. plate, and pull the plate
forward (as shown on label on top left side of the magnification plate).Two sets of holes
are provided for magnification. Magnification factors (1.5 & 1.8) are printed onto the
front part of the examination arm.
Note: Always make sure that the magnification plate is correctly locked in place before starting
an exam.
Note: The cassette holder is exclusively reserved for magnification. It must not be used for
standard exposures.
5. Compression is controlled by one pair of compression/decompression footpedals placed
on the floor (a second pair is available as an option).
Compression force, speed of compression and decompression height are
programmed by the SET-UP functions of the system (see details in chapter 3).
6. Manual adjustment is via thumbwheels located one on either side of the compression
paddle arm.
Note: As a safety measure, the compression system is fitted with magnetic braking to avoid the
paddle from falling in the event of a power cut. If such a power cut occurred during an
examination, a force of around 5 daN could remain on the compression paddle. To
disengage the patient, the paddle should be gently raised to counteract this force.
Note: Pressing the compression pedals and moving the thumbwheels illuminates the centering
light.
7. Compression paddle change: Slide the paddle arm sideways from the compression
paddle support.
Note: For best results in AOP and in order to have the correct fit between the bucky and the
compression paddle, it is mandatory to match the format of the compression paddle with
the format of the Bucky when in contact mode, i.e. use the 18x24 compression paddle with
the 18x24 Bucky and use the 24x30 compression paddle with the 24x30 Bucky. The 24 x
30 paddle must not be used with the 18 x 24 Bucky.
8. The Film-Holder Assembly can receive both the 18x24 and 24x30 Buckys, and the
18x24 cassette holder. It is also equipped with the AEC photocell.
9. The Bucky and cassette-holder are installed on top of the Film-Holder Assembly.
Removal: Grip Bucky or cassette holder by its sides and pull forward to remove.
Insertion: Slide Bucky or cassette holder on film holder assembly. Check that the Bucky
pin located at the back of the Bucky is engaged in the pin guide located in the film holder
assembly. Push Bucky or cassette holder in fully.