GE SENOGRAPHE 800T, Руководство оператора

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PREP
ARING
AN EXAMINA
TION
GE Medical Systems SENOGRAPHE 800T
REV 6 om 2135575–100
2–4
The operator selects the following parameters:
Filter (Mo, Rh),
Focal spot (0.3 or 0.1 by inserting the correct collimator diaphragm),
Screen/film combination,
kV values.
The operator can modify the density correction.
Place the breast to be examined on the Bucky, making sure the breast is properly positioned
over the photocell.
Inhibiting commands will be displayed on the system.
2–2–1 Contact Exposures
The Bucky must be used for contact exposures, not the cassette holder which is reserved for
magnification.
Select configurations and kV values given in manual mode.
The screen-film combination selection depends on user preference.
2–2–2 Magnification
Note:
Use of the Bucky is not recommended in magnification. The operator should use the
cassette holder.
Always make sure that the magnification plate is correctly locked in place before starting
an exam.
When magnification is selected, i.e. when the appropriate small focal spot collimator
diaphragm is inserted into the collimator slot., the system automatically selects the small focal
spot (0.1).
When 0.3 diaphragms are inserted, the system automatically selects the large focal spot (0.3).
To maintain optimal image quality, the user must check on the control panel display that the
selected focal spot is dedicated to the selected examination mode: Contact examination
(normal) = 0.3.
Magnification = 0.1
Select configurations and kV values.
2–2–3 Examination of Chest Wall
Select configurations and kV values according to the composition of the region examined.
Note: The Bucky must be used.
2–3 Manual Mode
The Manual Mode can be used for standard exposures, magnified exposures, or for the
examination of the chest wall.
It is recommended to use Manual Mode when the object to be x-rayed cannot be correctly
positioned over the AEC photocell.