Principles of Imaging- Test #4 (PACS)

In conventional image intensification fluoroscopy, the milliamperage range used in fluoroscopy mode is typically:

.5 to 5 mA

What component of the image intensifier converts the exit radiation to visible light?

Input phosphor

Minification gain X Flux gain is:

Brightness gain

Which of the following statements is/are true regarding the use of magnification mode during image intensified fluoroscopy?

Increases shape distortion

Which of the following automatically adjusts the technical factors of the image intensified fluoroscopy machine to maintain the overall appearance of the fluoro image?

Automatic Brightness Control (ABC)

Which of the following automatically adjusts the technical factors of the fluoroscopy machine to maintain the overall appearance of the fluoro image?

AERC

Which of the following statements is/are true regarding charge-coupled devices?

No geometric distortion of the image

The photocathode:

converts the visible light to electrons

When using fluoroscopic units with ABC, the x-ray exposure at the tabletop should not exceed:

 

10 R/min or 100 mGy/min

Output phosphor illumination divided by the input phosphor exposure rate will give you which of the following?

Conversion factor

Electrostatic focusing lenses have:

a negative charge

Which of the following conversion factors would be the most efficient?

500

This is a device that generates an electrical charge when stimulated by light and stores this charge in a capacitor.

CCD

Cesium iodide is found in:

input phosphor

Antimony cesium is found in the:

photocathode

Zinc cadmium sulfide is found in the:

output phosphor

An indirect flat panel detector uses:

amorphous silicon

Which of the following is more efficient and thus reduces patient dose?

CCD

DAP, air kerma, and the number of images are used to:

 

document patient dose

The system architecture of a network is the:

hardware and software infrastructure

The name for the location where records or documents are preserved and stored is:

Archive

Which of the following is a third-party provider of disaster recovery and affordable long-term storage for smaller facilities.

ASP

In which RAID level are all the image data and parity striped across all connected disks?

RAID 5

This is the standard for maintaining the privacy of digital records.

HL7

This is the communication standard for digital images.

DICOM

The system architecture is made up of:

image acquisition, image display, and image archiving

CCD digitizers, laser digitizers, printers and DVD burner are all considered:

peripheral PACS devices

What is a client?

any workstation used to view a digital image

Which of the following is a type of optical disk used for long-term storage?

UDO

Which of the following is NOT a type of magnetic tape technology?

MOD