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8 Cards in this Set

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What are the main reasons for a mobile CT Scanner?
1. transport of unstable patients
2. costs of people to transport patients
3. maintanence of nurse-to-patient ratio
What are some differences between the Mobile CT unit and Conventional CT.
The mobile unit gantry aperature is only 60cm, versus 70cm in Conventional CT, The mobile unit is best used for brain imaging, Pt dose is less in mobile CT because it uses 1/3 the mAs, Mobile ct is based on third generation CT design. Max table support is 350lbs, Scan times/intervals/technique are lower in Mobile CT
How can image performance be measured for the Mobile CT?
Imaging performance can be measured by the spatial resolution, contrast resolution, noise and radiation dose considerations.
What is spatial resolution?
Spatial resolution can be referred to as the ability of the scanner to image fine detail.
What is Contrast Resolution?
Contrast resolution refers to the abiltiy of the scanner to demostrate small difference in tissue contrast.
What is Noise?
Noise refers to the fluctuation of CT numbers throughout a tissue of the same density.
Are mobile units safe in regards to scatter radiation?
Scattered radiation was measured at 3 feet from the gantry, fell within the acceptable criteria for radiation saftey and quality assurance.
Where are the Mobile units proving to be most cost effective?
*In the ICU - decrease nursing staff
*In the OR - pre-,post-, peri- and intra-operatively
*In the Trauma resuscitation rooms