dcvr.h File Reference

definition and handling of value representations (VR) More...

Classes
class	DcmVR
	a class representing a DICOM Value Representation More...

Enumerations
enum	DcmEVR {   EVR_AE, EVR_AS, EVR_AT, EVR_CS,   EVR_DA, EVR_DS, EVR_DT, EVR_FL,   EVR_FD, EVR_IS, EVR_LO, EVR_LT,   EVR_OB, EVR_OD, EVR_OF, EVR_OL,   EVR_OW, EVR_PN, EVR_SH, EVR_SL,   EVR_SQ, EVR_SS, EVR_ST, EVR_TM,   EVR_UC, EVR_UI, EVR_UL, EVR_UR,   EVR_US, EVR_UT, EVR_ox, EVR_xs,   EVR_lt, EVR_na, EVR_up, EVR_item,   EVR_metainfo, EVR_dataset, EVR_fileFormat, EVR_dicomDir,   EVR_dirRecord, EVR_pixelSQ, EVR_pixelItem, EVR_UNKNOWN,   EVR_UN, EVR_PixelData, EVR_OverlayData, EVR_UNKNOWN2B }
	VR Enumerations. More...

Functions
DCMTK_DCMDATA_EXPORT void	dcmEnableGenerationOfNewVRs ()
	Global function that enables the generation of "new" value representations, i.e. More...
DCMTK_DCMDATA_EXPORT void	dcmDisableGenerationOfNewVRs ()
	Global function that disables the generation of "new" value representations, i.e. More...

Variables
DCMTK_DCMDATA_EXPORT OFGlobal< OFBool >	dcmEnableUnknownVRGeneration
	Global flag to enable/disable the generation of VR=UN, which has been introduced after the first edition of the DICOM standard (1993). More...
DCMTK_DCMDATA_EXPORT OFGlobal< OFBool >	dcmEnableUnlimitedTextVRGeneration
	Global flag to enable/disable the generation of VR=UT, which has been introduced after the first edition of the DICOM standard (1993). More...
DCMTK_DCMDATA_EXPORT OFGlobal< OFBool >	dcmEnableOtherFloatVRGeneration
	Global flag to enable/disable the generation of VR=OF, which has been introduced after the first edition of the DICOM standard (1993). More...
DCMTK_DCMDATA_EXPORT OFGlobal< OFBool >	dcmEnableOtherDoubleVRGeneration
	Global flag to enable/disable the generation of VR=OD, which has been introduced after the first edition of the DICOM standard (1993). More...
DCMTK_DCMDATA_EXPORT OFGlobal< OFBool >	dcmEnableOtherLongVRGeneration
	Global flag to enable/disable the generation of VR=OL, which has been introduced after the first edition of the DICOM standard (1993). More...
DCMTK_DCMDATA_EXPORT OFGlobal< OFBool >	dcmEnableUniversalResourceIdentifierOrLocatorVRGeneration
	Global flag to enable/disable the generation of VR=UR, which has been introduced after the first edition of the DICOM standard (1993). More...
DCMTK_DCMDATA_EXPORT OFGlobal< OFBool >	dcmEnableUnlimitedCharactersVRGeneration
	Global flag to enable/disable the generation of VR=UC, which has been introduced after the first edition of the DICOM standard (1993). More...
DCMTK_DCMDATA_EXPORT OFGlobal< OFBool >	dcmEnableUnknownVRConversion
	Global flag to enable/disable the automatic re-conversion of defined length UN elements read in an explicit VR transfer syntax, if the real VR is defined in the data dictionary.

Detailed Description

definition and handling of value representations (VR)

Enumeration Type Documentation

DcmEVR

enum DcmEVR

VR Enumerations.

NB: The order of entries has to conform to the order in DcmVRDict (see dcmvr.cc)! If not an error message is reported and the program aborts (only in DEBUG mode).

Enumerator
EVR_AE	application entity title
EVR_AS	age string
EVR_AT	attribute tag
EVR_CS	code string
EVR_DA	date string
EVR_DS	decimal string
EVR_DT	date time string
EVR_FL	float single-precision
EVR_FD	float double-precision
EVR_IS	integer string
EVR_LO	long string
EVR_LT	long text
EVR_OB	other byte
EVR_OD	other double
EVR_OF	other float
EVR_OL	other long
EVR_OW	other word
EVR_PN	person name
EVR_SH	short string
EVR_SL	signed long
EVR_SQ	sequence of items
EVR_SS	signed short
EVR_ST	short text
EVR_TM	time string
EVR_UC	unlimited characters
EVR_UI	unique identifier
EVR_UL	unsigned long
EVR_UR	universal resource identifier or universal resource locator (URI/URL)
EVR_US	unsigned short
EVR_UT	unlimited text
EVR_ox	OB or OW depending on context.
EVR_xs	SS or US depending on context.
EVR_lt	US, SS or OW depending on context, used for LUT Data (thus the name)
EVR_na	na="not applicable", for data which has no VR
EVR_up	up="unsigned pointer", used internally for DICOMDIR support
EVR_item	used internally for items
EVR_metainfo	used internally for meta info datasets
EVR_dataset	used internally for datasets
EVR_fileFormat	used internally for DICOM files
EVR_dicomDir	used internally for DICOMDIR objects
EVR_dirRecord	used internally for DICOMDIR records
EVR_pixelSQ	used internally for pixel sequences in a compressed image
EVR_pixelItem	used internally for pixel items in a compressed image
EVR_UNKNOWN	used internally for elements with unknown VR (encoded with 4-byte length field in explicit VR)
EVR_UN	unknown value representation
EVR_PixelData	used internally for uncompressed pixel data
EVR_OverlayData	used internally for overlay data
EVR_UNKNOWN2B	used internally for elements with unknown VR with 2-byte length field in explicit VR

Function Documentation

dcmDisableGenerationOfNewVRs()

DCMTK_DCMDATA_EXPORT void dcmDisableGenerationOfNewVRs

(

)

Global function that disables the generation of "new" value representations, i.e.

the ones that have been introduced after the first edition of the DICOM standard (1993). See above dcmEnableXXXVRGeneration() flags for details.

dcmEnableGenerationOfNewVRs()

DCMTK_DCMDATA_EXPORT void dcmEnableGenerationOfNewVRs

(

)

Global function that enables the generation of "new" value representations, i.e.

the ones that have been introduced after the first edition of the DICOM standard (1993). See above dcmEnableXXXVRGeneration() flags for details.

Variable Documentation

dcmEnableOtherDoubleVRGeneration

DCMTK_DCMDATA_EXPORT OFGlobal<OFBool> dcmEnableOtherDoubleVRGeneration

Global flag to enable/disable the generation of VR=OD, which has been introduced after the first edition of the DICOM standard (1993).

If disabled, the VR=UN (if enabled) or alternatively VR=OB is used.

dcmEnableOtherFloatVRGeneration

DCMTK_DCMDATA_EXPORT OFGlobal<OFBool> dcmEnableOtherFloatVRGeneration

Global flag to enable/disable the generation of VR=OF, which has been introduced after the first edition of the DICOM standard (1993).

If disabled, the VR=UN (if enabled) or alternatively VR=OB is used.

dcmEnableOtherLongVRGeneration

DCMTK_DCMDATA_EXPORT OFGlobal<OFBool> dcmEnableOtherLongVRGeneration

Global flag to enable/disable the generation of VR=OL, which has been introduced after the first edition of the DICOM standard (1993).

If disabled, the VR=UN (if enabled) or alternatively VR=OB is used.

dcmEnableUniversalResourceIdentifierOrLocatorVRGeneration

DCMTK_DCMDATA_EXPORT OFGlobal<OFBool> dcmEnableUniversalResourceIdentifierOrLocatorVRGeneration

Global flag to enable/disable the generation of VR=UR, which has been introduced after the first edition of the DICOM standard (1993).

If disabled, the VR=UT (if enabled), VR=UN (if enabled) or alternatively VR=OB is used.

dcmEnableUnknownVRGeneration

DCMTK_DCMDATA_EXPORT OFGlobal<OFBool> dcmEnableUnknownVRGeneration

Global flag to enable/disable the generation of VR=UN, which has been introduced after the first edition of the DICOM standard (1993).

If disabled, the VR=OB is used instead.

dcmEnableUnlimitedCharactersVRGeneration

DCMTK_DCMDATA_EXPORT OFGlobal<OFBool> dcmEnableUnlimitedCharactersVRGeneration

Global flag to enable/disable the generation of VR=UC, which has been introduced after the first edition of the DICOM standard (1993).

If disabled, the VR=UN (if enabled) or alternatively VR=OB is used.

dcmEnableUnlimitedTextVRGeneration

DCMTK_DCMDATA_EXPORT OFGlobal<OFBool> dcmEnableUnlimitedTextVRGeneration

Global flag to enable/disable the generation of VR=UT, which has been introduced after the first edition of the DICOM standard (1993).

If disabled, the VR=UN (if enabled) or alternatively VR=OB is used.