48.A full PACS should provide a single point of access for images and their associated data. That is, it should support all digital modalities, in all departments, throughout the enterprise.

28.To tilt the gantry forward(+) or backward(-),press the respective buttons on the gantry panel.The tilt range is from -30 to +30 degrees .Zero(0) indicate that the gantry is in the vertical position.

13.The flat panel detects the X-rays that have passed through the patient’body, converts them into electrical signals using X-ray scintillation effects, and sends the signals (digital image signals )to the digital radiography system.

5.By doing so ,it could ensure that the exam was carried out on right patient and correct inspection part.

30.For patients with chest and abdomen examination ,breath training is necessary such as according to the instructions or the lights to regularly breath ,to avoid breathing or motion artifacts.

51.Addresses the semantics of file services, file formats and infornation drectories ncessary for off-line communication.

22.Both users and operators must only use and operate the equipment in such ways as do not conflict with applicable laws , or regulations which have the force of the law.

21.When interpreted by a trained physician ,CT images yield useful diagnostic information.

34.Resistive magnets have conventional thick copper windings and generate a great deal of heat.

17.DSA ,based on flat panel detector, not only has the advantage of good image resolution, but also decreases the radiation dose received by patients and physicians.