26.While it is not necessary that you shut down the system down daily ,you must do so at least once a week ,or as your site deems necessary.Do not shut down wall power during weekly shutdown.
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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.
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25.However, for a scanner that dose not have 24/7 cooling , gantry power must be turned off (using the On/Off switch on the control panel ) when cooling is not available.
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45.System integration and clinical implementation are two other neessary components during the implementation after the system is physically connected.
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23.Mental objects include jewelry,eyeglasses, dentures and hairpins may affect the CT images and should be left at home or removed prior to your exam. You may be asked to remove hearing aids and removable dental work.
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14.Stable output with less noise and ripple can be obtained under all radiographic conditions because a high-frequency inverter is used .
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8.Passing though human body ,it can carry important characteristic information of inner structure, due to different features among bone, tissue and muscle.
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47.The client fills in the C-FIND request message with the keys that should be matched. E.g. the patient ID.
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16.There are three basical methods of DSA, which are respectively temporary subtraction ,energy subtraction and hybrid subtraction.
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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.
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