com.pixelmed.dicom
Class PixelSpacing

java.lang.Object
  com.pixelmed.dicom.PixelSpacing

public class PixelSpacing
extends Object

An class to extract and describe pixel spacing related information.

Currently only supports square pixels.

Field Summary

protected String	description
protected double	spacing

Constructor Summary

PixelSpacing(AttributeList list)
Extract the appropriate spacing to use for measurements on projection radiographs or non-enhanced family cross-sectional images.

PixelSpacing(AttributeList list, GeometryOfVolume volumeGeometry)
Extract the appropriate spacing to use for measurements.

PixelSpacing(AttributeList list, GeometryOfVolume volumeGeometry, boolean preferCalibratedValue, boolean useMagnificationFactorIfPresent)
Extract the appropriate spacing to use for measurements.

Method Summary

String	getDescription() Get the description.
double	getSpacing() Get the spacing.
String	toString() Get the spacing and the description as a String.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

spacing

protected double spacing

description

protected String description

Constructor Detail

PixelSpacing

public PixelSpacing(AttributeList list,
                    GeometryOfVolume volumeGeometry,
                    boolean preferCalibratedValue,
                    boolean useMagnificationFactorIfPresent)

Extract the appropriate spacing to use for measurements.

Parameters:

list - where to look for the top level DICOM pixel spacing related attributes

volumeGeometry - if present, where to get the voxel spacing already derived from the DICOM attributes may be null, if not cross-sectional modality)

preferCalibratedValue - if true, in the absence of 3D geometry, and presence of both Pixel Spacing and Imager Pixel Spacing with different values, use the former

useMagnificationFactorIfPresent - if true, and preferCalibratedValue is false and there is no Pixel Spacing, adjust Imager Pixel Spacing based on mag factor, if absent, SID and SOD

PixelSpacing

public PixelSpacing(AttributeList list,
                    GeometryOfVolume volumeGeometry)

Extract the appropriate spacing to use for measurements.

Will prefer calibrated values, and ignore magnification factors

Parameters:

list - where to look for the top level DICOM pixel spacing related attributes

volumeGeometry - if present, where to get the voxel spacing already derived from the DICOM attributes may be null, if not cross-sectional modality)

PixelSpacing

public PixelSpacing(AttributeList list)

Extract the appropriate spacing to use for measurements on projection radiographs or non-enhanced family cross-sectional images.

Will prefer calibrated values, and ignore magnification factors

Parameters:

list - where to look for the top level DICOM pixel spacing related attributes

Method Detail

getSpacing

public double getSpacing()

Get the spacing.

Returns:

the spacing

getDescription

public String getDescription()

Get the description.

Returns:

the description

toString

public String toString()

Get the spacing and the description as a String.

Overrides:

toString in class Object

Returns:

a string describing the spacing and the description