Ch. 24 PACS (Exp II) Flashcards
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
d. All of the above
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
b. Images visualized on film
Laser printers have which of the following components?
a. Laser source
b. Collimator lens
c. Beam modulator
d. All of the above
d. All of the above
What type of film responds to light from a laser and to heat from a thermal head?
a. Silver-based dry film
Light scattering, light leakage, and electron backscattering are examples of conditions that will cause _____.
b. Glare
How long do many institutions store film?
5-7 years
The ____ includes image storage, image query, image retrieval, image print, storage resource, and examination.
Service class
A ____ uses a laser beam that scans in a raster pattern across the film as it is transported through the digitizer.
Laser film digitizer
Gray scale bit depth ranges from ___ to ___ bits.
8; 32
A ___ connects all the computers in a system
LAN
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
d. All of the above
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 ___.
BMI
The acronym for PACS stands for:
Picture Archiving and Communication System
Essential characteristics of a PACS include:
- Distribution and retrieval of digital images
- Creation of digital images
- Radiation dosage documentation
- Display of digital images
- Voice-activated dictation
- Digital image storage and long-term archival
1, 4, and 6 only
The adoption of a DICOM standard in the medical imaging industry was designed to…
Allow various vendor to share digital data without proprietary software constraints.
The DICOM standard has established two classes of information. They are:
Service class and object class
The service class and object class combine to form a…
SOP unit
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…
The workstation is provider class and the viewing station is user class.
The Health Insurance Portability and Accountability Act of 1996 (HIPAA) intends to:
Protect a patient’s medical information from unauthorized usage and access
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
d. Discussing the results of a patient’s mammogram with a colleague as you ride the elevator to lunch
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
d. All of the above
Based upon image file size, the greatest image file size would be created with what type of diagnostic image?
Digital mammogram
Medical images that are sent via teleradiology are sent over a ___.
WAN
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. An image on display on a flat-panel monitor
Gray scale bit depth determines…
The number of gray shades
Soft copy display of images refers to…
Images displayed via a video monitor
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
b. Images visualized on film
For how many years do many institutions store radiographic film images?
5-7 years
Production of a grainy, reticulated image that cannot be corrected in digital post-processing is the result of…
Failure to use a high enough mAs setting.
