Exam 14: Image Intensified Fluoroscopy

ABC is very similar to AEC in that it controls the length of the exposure to maintain consistent image brightness.

The radiographer may be responsible for the ________________ inspection of the fluoroscopic equipment for quality control purposes.

The electron gun in the television monitor sends out a steady stream of electrons to activate the fluorescent screen.

The radiographer is responsible for performance and operational quality control testing.

In fluoroscopy,shape distortion is caused by

Age has no effect on an image intensifier because everything takes place in a vacuum.

In LCD monitors,the number of TFTs is equal to the

The purpose of a camera tube or CCD is to record the fluoroscopic image.

The input phosphor and photocathode form a flat surface

The image intensifier is capable of resolving approximately ___________,whereas the monitor can resolve approximately _______________.

Inspecting the protective curtain,Bucky slot cover,and fluoroscopic timer are part of the

Flat-panel detectors for fluoroscopic imaging can be the

When a CCD is exposed to light,it generates and briefly stores light energy.

Frame averaging is

The __________________ absorbs electrons and emits light.

Typical television monitors are

Which of the following is true about the CCD used in digital fluoroscopy? I.The CCD is more-light sensitive with a higher DQE value. II.The CCD exhibits less noise and no spatial distortion. III.The CCD has higher spatial resolution. IV.The CCD requires more radiation to create an image.

In terms of resolution,the weakest part of the fluoroscopic system is the

Fluoroscopic equipment should be inspected every

For detectors to produce high-quality fluoroscopic images,they must be able to