1 / 12

QA/QC of Image Display Equipment

QA/QC of Image Display Equipment. Film Viewing Equipment ("Viewing Boxes"). The quality and characteristics of the viewing equipment play a decisive role in the recognition of diagnostic details in the radiological image.

mason
Download Presentation

QA/QC of Image Display Equipment

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. QA/QC of Image Display Equipment

  2. Film Viewing Equipment ("Viewing Boxes") • The quality and characteristics of the viewing equipment play a decisive role in the recognition of diagnostic details in the radiological image. • The measurable, physical parameter for viewing equipment is the light stream (light quantity) which is emitted from the viewing surface of the equipment.

  3. If the light stream L (lat. Lumen) is put in relation to the light emitting surface, you produce the measurement parameter Luminance L: L = Candela / Square meter (cd/m2).

  4. LUMINANCE • A properly exposed X-Ray film has a mid-optical density of 1.2 • To be able to diagnose details in the lower density range of the density curve (D = 0.3 – 0.6), the luminance of the viewing device must be able to be reduced.

  5. To view high density (Dopt > 2.2) areas of X-Ray films, a strong light source with an iris shutter (“hot light”) is needed. This light source must have a luminance of at least 5000 cd/m2. Due to their great importance in making diagnostic details of radiographs visible, all viewing devices must undergo an acceptance test and routine constancy tests.

  6. Repeat tests for viewing devices, which are routinely used for diagnosis:

  7. Acceptance Test Requirements

  8. Constancy Test Requirements

  9. Image Viewing and Display Devices

More Related