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GE Healthcare
REV 1
CHAPTER 3 –
1.
INTRODUCTION
The Senographe 2000 D Gantry is an X-ray system used for mammography examinations, which can
be made with the patient in the standing or sitting position and for various views and magnification
factors.
Major features of the Senographe 2000 D Gantry are the dual anode track x-ray tube, the entirely
automatic AOP exposure mode, its ergonomic design, and of course its digital detector.
Operation of the Gantry is controlled from the Gantry Control Console, which also controls power to
the Gantry and to the other components of the Senographe 2000 D system.
Ergonomic design: the Gantry is designed to ensure speed and convenience of patient positioning,
as well as patient examination comfort.
Dual-Track x-ray tube:
D Each of the two anode tracks is composed of a different metal, allowing the best compromise
between subject contrast and dose given to the patient.
D The rhodium (Rh) track provides improved penetration with a reduced radiation dose to the very
dense breast. The molybdenum (Mo) track provides high quality mammography images in all
other cases.
D Standard or magnification examinations can be performed with either track. Focal spot sizes are:
0.3 for contact exams and 0.15 for magnification exams.
AOP Mode:
D The AOP (Automatic Optimization of Parameters) Mode controls radiation. For a given priority
(dose reduction, subject contrast or compromise of dose and contrast), the AOP Mode provides
automatic selection of the optimum radiographic parameters (track, filter, kV, and mAs).
A manually controlled mode is also available.
Breast compression is essential when using the AOP mode. Refer to the
CAUTION
Caution on use of compression in the AOP section of Chapter 10.
Digital Detector:
D The digital detector produces images by direct digitization. It contains a flat panel of amorphous
silicon on which cesium iodide is deposited to maximize detection of X-Rays and transmission of
light photons. The high definition digital images produced are sent to the acquisition workstation for
visualization and processing.
The detector is built into the Image Receptor, which functions as a breast support. This includes an
easily removable Bucky, which can be interchanged with an optional Breast Holder (without grid).
Senographe 2000 D Acquisition System
SENOGRAPHE 2000 D GANTRY
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OM 5179217–1–100
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