Appendix Archives - MyXrayDose https://myxraydose.com/helpdocs/viewiqhelp/appendix/ Thu, 15 Dec 2022 00:31:57 +0000 en-US hourly 1 https://i0.wp.com/myxraydose.com/wp-content/uploads/2020/01/cropped-My_Xray_Dose_Favicon-32x32-1.png?fit=32%2C32&ssl=1 Appendix Archives - MyXrayDose https://myxraydose.com/helpdocs/viewiqhelp/appendix/ 32 32 167553530 Appendix https://myxraydose.com/docs/appendix/ https://myxraydose.com/docs/appendix/#respond Wed, 02 Nov 2022 04:42:41 +0000 https://myxraydose.com/?post_type=docs&p=5583 References Display Quality Assurance The Report of AAPM Task Group 270 January 2019 DICOM PS3.14  – Grayscale Standard Display Function RANZCR-Standards of Practice for Clinical Radiology V11 ACR–AAPM–SIIM Technical Standard for Electronic Practice Of Medical Imaging RCR-Standards for interpretation and reporting of imaging investigations Luminance and illuminance Luminance and illuminance are both measures of light, […]

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References

  1. Display Quality Assurance The Report of AAPM Task Group 270 January 2019
  2. DICOM PS3.14  – Grayscale Standard Display Function
  3. RANZCR-Standards of Practice for Clinical Radiology V11
  4. ACR–AAPM–SIIM Technical Standard for Electronic Practice Of Medical Imaging
  5. RCR-Standards for interpretation and reporting of imaging investigations

Luminance and illuminance

Luminance and illuminance are both measures of light, but they describe different aspects of it. Luminance is a measure of the amount of light that is emitted or reflected from a surface, and is typically measured in units of candelas per square meter (cd/m2). Illuminance, on the other hand, is a measure of the amount of light that falls on a surface, and is typically measured in units of lux (lx). Luminance is a directional measure, while illuminance is an averaged measure. In summary, luminance describes the amount of light coming from a source, while illuminance describes the amount of light received by a surface.

CIE D65

The CIE D65 standard, also known as the CIE Standard Illuminant D65, is a standard illuminant used in colorimetry to represent average daylight. It is one of the standard illuminants used in the CIE 1931 color space, which is a color space used to describe the colors visible to the human eye.

The CIE D65 standard is defined by the CIE as a spectral power distribution with a correlated color temperature of 6500 Kelvin. It is designed to represent the average daylight spectrum at noon on a clear day, with a slight adjustment to the blue region of the spectrum to match the average daylight spectrum at sea level in Western Europe.

The CIE D65 standard is widely used in a variety of applications, including photography, graphic design, and television and film production. It is also used in color management systems to ensure that colors are reproduced accurately across different devices and mediums.

DICOM Part 14  GSDF

DICOM Part 14: Grayscale Standard Display Function: The Grayscale Standard Display Function (GSDF) is a mathematical function defined in the DICOM Part 14 standard that specifies how digital grayscale images should be displayed. The GSDF is used to ensure that grayscale images are displayed consistently across different devices, such as monitors and printers, and that the luminance values of the pixels in the image are accurately represented.

The GSDF is an important part of the DICOM standard, as it ensures the accurate and consistent display of grayscale images.

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