DICOM PS3.3 2019c - Information Object Definitions

C.18 Content Macros

C.18.1 Numeric Measurement Macro

Table C.18.1-1 specifies the Attributes that convey a NUM (numeric measurement) value.

Note

The Measured Value Sequence (0040,A300) may be empty to convey the concept of a measurement whose value is unknown or missing, or a measurement or calculation failure.

Table C.18.1-1. Numeric Measurement Macro Attributes

Attribute Name

Tag

Type

Attribute Description

Measured Value Sequence

(0040,A300)

2

This is the value of the Content Item.

Shall consist of a Sequence of Items conveying the measured value(s), which represent integers or real numbers and units of measurement.

Zero or one Item shall be included in this Sequence.

>Numeric Value

(0040,A30A)

1

Numeric measurement value.

Only a single value shall be present.

>Floating Point Value

(0040,A161)

1C

The floating point representation of Numeric Value (0040,A30A). Only a single value shall be present.

Required if Numeric Value (0040,A30A) has insufficient precision to represent the value as a string. May be present otherwise.

>Rational Numerator Value

(0040,A162)

1C

The integer numerator of a rational representation of Numeric Value (0040,A30A). Encoded as a signed integer value. Only a single value shall be present.

Required if Numeric Value (0040,A30A) has insufficient precision to represent a rational value as a string. May be present otherwise.

>Rational Denominator Value

(0040,A163)

1C

The integer denominator of a rational representation of Numeric Value (0040,A30A). Encoded as a non-zero unsigned integer value. Only a single value shall be present.

Required if Rational Numerator Value (0040,A162) is present.

>Measurement Units Code Sequence

(0040,08EA)

1

Units of measurement.

Only a single Item shall be included in this Sequence.

>>Include Table 8.8-1 “Code Sequence Macro Attributes”

DCID 82 “Units of Measurement”.

Numeric Value Qualifier Code Sequence

(0040,A301)

3

Qualification of Numeric Value (0040,A30A) in Measured Value Sequence (0040,A300), or reason for absence of Measured Value Sequence (0040,A300) Item.

Only a single Item is permitted in this Sequence.

>Include Table 8.8-1 “Code Sequence Macro Attributes”

DCID 42 “Numeric Value Qualifier”.


DICOM PS3.3 2019c - Information Object Definitions