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Exposure > Ch. 24 PACS (Exp II) > Flashcards

Ch. 24 PACS (Exp II) Flashcards

1
Q

Which is an advantage to the digital environment over film?

a. Digital images can be manipulated without re-exposure to patients
b. Digital images can be sent to remote locations
c. Digital images require less physical storage
d. All of the above

A

d. All of the above

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2
Q

All of the following are advantages to soft-copy display EXCEPT

a. Multiple viewing of the same image
b. Images visualized on film
c. Variations in density or contrast
d. Decreased number of lost films

A

b. Images visualized on film

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3
Q

Laser printers have which of the following components?

a. Laser source
b. Collimator lens
c. Beam modulator
d. All of the above

A

d. All of the above

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4
Q

What type of film responds to light from a laser and to heat from a thermal head?

A

a. Silver-based dry film

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5
Q

Light scattering, light leakage, and electron backscattering are examples of conditions that will cause _____.

A

b. Glare

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6
Q

How long do many institutions store film?

A

5-7 years

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7
Q

The ____ includes image storage, image query, image retrieval, image print, storage resource, and examination.

A

Service class

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8
Q

A ____ uses a laser beam that scans in a raster pattern across the film as it is transported through the digitizer.

A

Laser film digitizer

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9
Q

Gray scale bit depth ranges from ___ to ___ bits.

A

8; 32

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10
Q

A ___ connects all the computers in a system

A

LAN

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11
Q

Examples of a biomedical informatics (BMI) platform include:

a. Hospital Information System (HIS)
b. Electronic Medical Record (EMR)
c. Radiology Information System (RIS)
d. All of the above

A

d. All of the above

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12
Q

Any computer platform that is designed to deal with medical purposes such as medical care, medical information, and medical research and documentation would be classified as a ___.

A

BMI

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13
Q

The acronym for PACS stands for:

A

Picture Archiving and Communication System

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14
Q

Essential characteristics of a PACS include:

  1. Distribution and retrieval of digital images
  2. Creation of digital images
  3. Radiation dosage documentation
  4. Display of digital images
  5. Voice-activated dictation
  6. Digital image storage and long-term archival
A

1, 4, and 6 only

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15
Q

The adoption of a DICOM standard in the medical imaging industry was designed to…

A

Allow various vendor to share digital data without proprietary software constraints.

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16
Q

The DICOM standard has established two classes of information. They are:

A

Service class and object class

17
Q

The service class and object class combine to form a…

A

SOP unit

18
Q

When images are sent from a CR workstation to a radiologist viewing station for interpretation, the workstation and viewing station become an SOP. In this case…

A

The workstation is provider class and the viewing station is user class.

19
Q

The Health Insurance Portability and Accountability Act of 1996 (HIPAA) intends to:

A

Protect a patient’s medical information from unauthorized usage and access

20
Q

All of the following would be acceptable HIPAA-compliant actions EXCEPT:

a. Eliminating all patient identifiers on an image used for classroom presentations.
b. Keeping a patient’s image on a display monitor as a school tour group visits the department. All patient identifiers have been removed from the image display
c. Asking colleagues for advise on positioning as you complete images on a severe motor vehicle accident
d. Discussing the results of a patient’s mammogram with a colleague as you ride the elevator to lunch

A

d. Discussing the results of a patient’s mammogram with a colleague as you ride the elevator to lunch

21
Q

As a result of film digitizers,

a. Hard-copy analog films can be scanned into digital format
b. Digitized images can be placed into a PACS
c. Digitized images can be networked with other DICOM images
d. All of the above

A

d. All of the above

22
Q

Based upon image file size, the greatest image file size would be created with what type of diagnostic image?

A

Digital mammogram

23
Q

Medical images that are sent via teleradiology are sent over a ___.

A

WAN

24
Q

All of the following would be hard-copy display systems EXCEPT:

a. An image on display on a flat-panel monitor
b. A radiographic film hung on a viewbox
c. A dry laser image displayed on an illuminator
d. A laser copy of a radiograph on display via a viewbox

A

a. An image on display on a flat-panel monitor

25
Q

Gray scale bit depth determines…

A

The number of gray shades

26
Q

Soft copy display of images refers to…

A

Images displayed via a video monitor

27
Q

All of the following are advantages to soft-copy display EXCEPT:

a. Multiple viewing of the same image
b. Images visualized on film
c. Variations in density or contrast
d. Decreased number of lost films

A

b. Images visualized on film

28
Q

For how many years do many institutions store radiographic film images?

A

5-7 years

29
Q

Production of a grainy, reticulated image that cannot be corrected in digital post-processing is the result of…

A

Failure to use a high enough mAs setting.

Exposure (17 decks)

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