[Medical] dicom vr data type table

Dicom vr data type table

Luo chaohui (http://www.cnblogs.com/kesalin)

This article follows the "signature-non-commercial use-consistency" creation public agreement

The DICOM Standard defines 27 Basic Data Types in ps3.5, namely the value representation (VR, value representations ). Value representations are used to encapsulate all possible clinical data types. Writing anything in DICOM must conform to one of the 27 Basic data types. Each VR is an abbreviation of two English letters. The following table lists the definitions of these 27 Basic data types.

 

DICOM VR (value representations)Table

Vr	IncludingYi	AllowXuCharacter	DataLongDegrees
CS-Code string CodeString	A string with spaces at the beginning and end, such as "cd123_4"	Uppercase letters, 0-9, spaces, and underlines	Up to 16 characters
Sh-Short string Short string	Short string, such as phone number and ID		Up to 16 characters
Lo-Long String Long String	A string, which may contain spaces at the beginning and end. For example, "Introduction to DICOM"		Up to 64 characters
St-Short text Short text	A string that may contain one or more paragraphs		1024 characters at most
Lt-Long text Short text	It may contain one or more exercise strings, which are the same as lo but can be longer.		10240 characters at most
UT-Unlimited text Unlimited text	A string that contains one or more paragraphs, similar to <		A maximum of (2 to the power of 32-2) characters
AE-Application entity Application entity	A string that identifies the name of a device. It can start and end with meaningless characters. For example, "mypc01"		Up to 16 characters
Pn-Person Name Patient Name	Patient name with the inserted symbol (^) as the name separator. For example, "Smith ^ John", "morison-Jones ^ Susan ^ Ph. D, chief executive officer"		Up to 64 characters
UI-Unique Identifier (UID) Unique Identifier	A string that uniquely identifies various projects and contains uid. For example, "1.2.840.10008.1.1"	0-9 and halfwidth periods (.)	Up to 64 characters
Da-Date Date	String in the format of yyyymmdd; yyyy indicates year; mm indicates month; dd indicates day. For example, "20050822" indicates August 22, 2005.	0-9	8 characters
TM-Time Time	A string in the format of hhmmss. Frac; hh indicates the hour (range: "00"-"23"); mm indicates the minute (range: "00"-"59"); and Frac contains the fractional part of the second, that is, one minute per second. For example, "183200.00" indicates.	0-9 and halfwidth periods (.)	Up to 16 characters
DT-Date time Date and Time	In the format of yyyymmddhhmmss. ffffff. From left to right: yyyy, mm, DD, HH, mm, SS, and second. For example, "20050812183000.00" indicates August 12, 2005 18:30:00 P.M..	0-9, plus signs, minus signs, and periods	Up to 26 characters
As-Age string Age string	String in the following format: nnnd, nnnw, nnnm, nnny; NNN indicates the number of days for D, W indicates the number of weeks, M indicates the number of months, and y indicates the number of years. For example, "018m" indicates that he is 18 months old.	0-9, D, W, M, y	4 characters
Is-Integer string Integer string	A string that represents an integer. For example, "-1234567"	0-9, plus sign (+), minus sign (-)	Up to 12 characters
DS-Decimal string	Decimal point and floating point. For example, "12345.67" and "-5.0e3"	0-9, plus sign (+), minus sign (-), a maximum of 16 characters E, E, and periods (.)	Up to 16 characters
SS-Signed short Signed Short Type	Signed binary integer with a length of 16 bits		2 Characters
Us-Unsigned short unsigned Short Type	Unsigned binary integer with a length of 16 bits		2 Characters
SL-Signed long Signed long type	Signed binary integer		4 characters
Ul-Unsigned long unsigned long type	Unsigned binary integer with a length of 32 bits		4 characters
At-Attribute tag Attribute tag	16-bit unsigned integer ordered pair, Data Element label		4 characters
FL-Floating Single-precision floating point	Single-precision binary floating point number		4 characters
FD-Floating point double Double-precision binary floating point number	Double-precision binary floating point number		8 characters
Ob-Other byte string Other byte strings	Byte string ("other" indicates content not defined in VR)
Ow-Other word string Other word strings	16-bit (2-byte) word string
Of-Other float string Other floating point strings	32-bit (4-byte) floating point word string
SQ-Sequence items Entry sequence	Sequence of entries
UN-Unknown Unknown	The encoding method of the content is unknown.