Data Acquisition
Help!
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| What is the average of kV in CT? | 120-140kV
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| What does using a high kV do for the life of the tube? | Reducing heat load= extending life
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| What does high kV do for the patient? | Hardens the beam so that it reduces patient dose.
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| How does having high kV reduce heat? | by being able to use a lower mA.
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| What are some cooling systems that could be located in the gantry? | blowers, filters, or devices that perform oil-to-air heat exchange
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| What is the anode made of and the atomic number? | Tungsten 74
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| How do you we reduce patient dose and minimize image artifact, improving image quality? | by using a compensating filter to shape the xray beam
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| What do collimators do? | restrict xray beam and reduce scatter
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| What is a common filter? | Bow tie, because of its shape
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| What is the range of sizes of collimators? | 0.5 - 10 mm
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| Describe what predictor collimation. | Located below the patient, shaped the beam after passing thru patient, before hitting the detector, commonly referred to as post patient collimation.
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