Medical [Dicom]

Source: Internet
Author: User

For medical information software, the Dicom standard is a standard that has to be studied. The DICOM standard defines 27 basic data types in PS3.5, the so-called value representation (VR, value representations). The value expression is used to encapsulate all possible clinical data types. Anything written in DICOM must conform to one of these 27 basic data types. Each VR is an acronym for two English letters. The following table lists the definitions for these 27 basic data types.

DICOM VR (Value representations) table

Vr

containing righteousness

allowed Xu the character

Data Long degree

CS -Code String

Code string

A string that can have meaningless spaces at the beginning, such as "Cd123_4"

Uppercase letters, 0-9, spaces, and underscore characters

Maximum of 16 characters

SH -Short String

Short string

Short strings, such as: phone number, ID, etc.

Maximum of 16 characters

LO -Long String

Long string

A string that may be filled with spaces at the beginning and end. Like "Introduction to DICOM."

Maximum of 64 characters

ST -Short Text

Short book

A string that may contain one or more paragraphs

Maximum of 1024 characters

LT -Long Text

Short book

A string that may contain one or more workouts, same as lo, but can be longer

Maximum of 10,240 characters

UT -Unlimited Text

Unlimited text

A string containing one or more paragraphs, similar to LT

Up to (2 of 32 square –2) characters

AE -Application Entity

Apply Entity

A string that identifies the name of a device that can have meaningless characters at the beginning and end. Like "MyPC01."

Maximum of 16 characters

PN -person Name

Patient Name

A patient name with a caret (^) as the name separator. such as "Smith^john" "morrison-jones^susan^ ^^ Ph.D, chief Executive Officer"

Maximum of 64 characters

UI -Unique Identifier (UID)

Unique identifiers

A string that is used to uniquely identify the containing UID for each type of item. Like "1.2.840.10008.1.1."

0-9 and half-width periods (.)

Maximum of 64 characters

DA -Date

Date

The format is YYYYMMDD string; YYYY represents the year; MM represents the month; DD represents the day. For example, "20050822" means August 22, 2005.

0-9

8 characters

TM -time

Time

A string formatted as HHMMSS. FRAC; HH denotes hours (range "XX"-"All"), MM indicates minutes (range "00"-"59"), while FRAC contains the number of seconds, i.e. one out of 10,000 seconds. For example, "183200.00" means 6:32.

0-9 and half-width periods (.)

Maximum of 16 characters

DT -Date time

Date Time

The format is YYYYMMDDHHMMSS. FFFFFF, concatenated date-time string. The parts of the string are from left to right: year YYYY, month mm, DD, hour HH, minute mm, second SS, fractional FFFFFF of seconds. For example, 20050812183000.00 "means August 12, 2005, 18:30 P.M., 00 seconds.

0-9, plus, minus and half-width periods

Maximum of 26 characters

AS-age String

Age string

A string that conforms to the following format: Nnnd, NNNW, nnnm, Nnny; where nnn represents the number of days for D, the number of weeks for W, the number of months for M, and the age for Y. For example, "018M" means his age is 18 months.

0–9, D, W,m, Y

4 characters

is-Integer String

Integer string

A string that represents an integer number. Like "-1234567"

0-9, plus (+), minus (-)

Maximum of 12 characters

DS -Decimal string decimals

Represents fixed-point decimals and floating-point decimals. Like "12345.67", " -5.0e3."

0-9, plus (+), minus (-), up to 16 characters e,e and half-width periods (.)

Maximum of 16 characters

SS -Signed short

Signed Short type

Symbolic binary integer, 16 bits in length

2 characters

US -Unsigned short unsigned shorter type

Unsigned binary integer, 16 bits in length

2 characters

SL -Signed Long

Signed Long type

Signed binary integers

4 characters

UL -Unsigned long unsigned type

Unsigned binary integer, 32 bits in length

4 characters

at-Attribute Tag

Property labels

Ordered pairs of 16-bit unsigned integers, labels for data elements

4 characters

FL -floating single precision floating point

Single-precision binary floating-point numbers

4 characters

FD -floating point Double

Double-precision binary floating-point numbers

Double-precision binary floating-point numbers

8 characters

OB -Other Byte String

Other byte strings

Byte string ("Other" means no content 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

A byte string in which the content is encoded in an unknown way

Medical [Dicom]

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