oro.dicom: parsePixelData – R documentation

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parsePixelData

Parse DICOM Pixel or Spectroscopy Data

Description

These subroutines process the information contained after the DICOM header and process this information into an image (2D or 3D) or complex-valued vector.

Usage

parsePixelData(rawString, hdr, endian = "little", flipupdown = TRUE)

parseSpectroscopyData(rawString, hdr, endian = "little")

Arguments

`rawString`	is a vector of `raw` values taken directly from the DICOM file.
`hdr`	is the list object of DICOM header information.
`endian`	is the endian-ness of the file (default is `"little"`).
`flipupdown`	is a logical variable for vertical flipping of the image (default is `TRUE`).

Details

A while loop is used to traverse the unknown number of DICOM header fields contained in a single file. Information contained in “sequences” may be included/excluded according to the logical variable skipSequence (default = TRUE).

A recursive implementation of the code breaks the DICOM file into segments and calls itself to parse each segment.

Value

A list containing two elements:

hdr: all DICOM header fields (with or without “sequence” information).
img: the ‘image’ information.

Author(s)

Brandon Whitcher bwhitcher@gmail.com

Source

See references.

References

Digital Imaging and Communications in Medicine (DICOM)
http://medical.nema.org
http://en.wikipedia.org/wiki/Digital_Imaging_and_Communications_in_Medicine