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| Version | User | Scope of changes |
|---|---|---|
| Jul 22 2006, 8:00 AM EDT | louisep | 3 words added, 7 words deleted |
| Jul 22 2006, 7:59 AM EDT | louisep |
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The gantry is the 'donut' shaped part of the CT scanner that houses the components necessary to produce and detect x-rays in orderto forcreate a CT image to be created.image. The x-ray tube and detectors are positioned opposite each other and rotate around the gantry aperture. Continuous rotation in one direction without cable wrap around is possible due to the use of a slip ring. The images below are of a Toshiba Aquilion 16 CT scanner with the external and internal components of the gantry labelled. This gantry weighs a total of 1750kg (3858lb)!
CT Gantry External View
- gantry aperture (720mm diameter)
- microphone
- sagittal alignment laser light
- patient guide lights
- x-ray exposure indicator light
- emergency stop button
- control panel
- external alignment laser light
- patient couch
- ECG gating monitor
CT Gantry Internal View
- collimators and filters
- x-ray tube heat exchanger
- high voltage generator (0-75kV)
- direct drive gantry motor
- optical transfer interface board
- data acquisition system (DAS)
- detector temperature controller
- high voltage generator (75-150kV)
- x-ray controller board
CT Gantry Control Panel
- gantry tilt (+/-30 degrees)
- table in/out
- free table movement
- table up/down
- home button (table out and down)
- table feed from external landmark
- zero table position
- laser lights on/off
