(50xx,0005) 
Curve Dimensions 
1

Number of dimensions for these data. The dimensions may be any number from 1 to n. 
(50xx,0010) 
Number of Points 
1

Number of data points in this Curve 
(50xx,0020) 
Type of Data 
1

Type of data in this curve. See C.10.2.1.1 for Defined Terms. 
(50xx,0103) 
Data Value Representation 
1

Data representation of the curve data points. See C.10.2.2 for Enumerated Values and further explanation. 
(50xx,3000) 
Curve Data 
1

Curve data. See C.10.2.1.4 for further explanation. 
(50xx,0022) 
Curve Description 
3

Userdefined comments about the Curve 
(50xx,0030) 
Axis Units 
3

Units of measure for the axes. See C.10.2.1.3 for Defined Terms. 
(50xx,0040) 
Axis Labels 
3

Text labels for each axis. One label for each axis. 
(50xx,0104) 
Minimum Coordinate Value 
3

The minimum value in the set of data. One value for each dimension. 
(50xx,0105) 
Maximum Coordinate Value 
3

The maximum value in the set of data. One value for each dimension. 
(50xx,0106) 
Curve Range 
3

A minimummaximum pair for each dimension for defining the range of the curve representation, in the same units as Axis Units. 
(50xx,0110) 
Curve Data Descriptor 
1C

Specifies the format of the Curve Data. Required if any dimensions of the data are described by interval spacing. See C.10.2.1.5 for further explanation. 
(50xx,0112) 
Coordinate Start Value 
1C

The starting point of a one dimensional data list. Required if Curve Data Descriptor is used. One value for each dimension. The Value Representation is given in Data Value Representation (50xx,0103). 
(50xx,0114) 
Coordinate Step Value 
1C

The interval spacing between two successive points. Required if Curve Data Descriptor is used. One value for each dimension. The Value Representation is given in Data Value Representation (50xx,0103). 
(50xx,2500) 
Curve Label 
3

A user defined text string which may be used to label or name this curve. 
(50xx,2600) 
Referenced Overlay Sequence 
3

A Sequence which provides reference to a set of related overlays used to generate this curve. 
(0008,1150) 
>Referenced SOP Class UID 
1C

Uniquely identifies the referenced SOP Class. Required if Referenced Overlay Sequence (50xx,2600) is sent. 
(0008,1155) 
>Referenced SOP Instance UID 
1C

Uniquely identifies the referenced SOP Instance. Required if Referenced Overlay Sequence (50xx,2600) is sent. 
(50xx,2610) 
>Referenced Overlay Group 
1C

The Group number of the related overlay. Required if Referenced Overlay Sequence (50xx,2600) is sent. 