Cleanup section locations Enhanced mr image Status: Final Text




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CP-986 Date 2010/01/18

Cleanup section locations Enhanced MR Image Status: Final Text



DICOM Correction Item

Correction Number CP-986

Log Summary: Cleanup section locations Enhanced MR Image

Type of Modification

Correction



Name of Standard

PS 3.3 – 2009



Rationale for Correction

Introduction of the Common Enhanced MR/CT Image left some sections for the Enhanced MR Image Module on a not logical sequence related to the tables concerned. This CP moves the section to the correct place and re-number the headings and references to the sections.



Sections of documents affected

PS 3.3 C.8.13.1,C.8.13.3, C.8.13.5.1 and C.8.16.2.1.1



Correction Wording:


C.8.13 Enhanced MR Image


This section describes the specific modules for the Enhanced MR Image IOD.

C.8.13.1 Enhanced MR Image Module


This section describes the Enhanced MR Image Module.

Table C.8-79 specifies the attributes of the Enhanced MR Image module.



Change the references in table C.8-79 to the sections below the table.

Table C.8-79


ENHANCED MR IMAGE MODULE ATTRIBUTES

Attribute Name

Tag

Type

Attribute Description

Include ' MR Image and Spectroscopy Instance Macro' Table C.8-81




Image Type

(0008,0008)

1

Image characteristics. See C.8.16.1 and C.8.13.31.1.1.

Include Common CT/MR Image Description Macro' Table C.8-131




Include 'MR Image Description Macro' Table C.8.82




Samples per Pixel

(0028,0002)

1

Number of samples (planes) in this image. For Enumerated Values see C.8.13.1.1.12.

Photometric Interpretation

(0028,0004)

1

Specifies the intended interpretation of the pixel data. Enumerated Values are specified in the IOD that invokes this Module. See C.7.6.3.1.2 for definition of this term.

Bits Allocated

(0028,0100)

1

Number of bits allocated for each pixel sample. Each sample shall have the same number of bits allocated. For Enumerated Values see C.8.13.1.1.12.

Bits Stored

(0028,0101)

1

Number of bits stored for each pixel sample. Each sample shall have the same number of bits stored. For Enumerated Values see C.8.13.1.1.12.

Pixel Representation

(0028,0103)

1

Data representation of the pixel samples. Each sample shall have the same pixel representation. For Enumerated Values see C.8.13.1.1.12.

Planar Configuration

(0028,0006)

1C

Indicates whether the pixel data are sent color-by-plane or color-by-pixel. Required if Samples per Pixel (0028,0002) has a value greater than 1. See C.7.6.3.1.3 and C.8.13.1.1.12 for further explanation.





















Add Image Type and Frame Type section, re-number Bits Allocated and Bits Stored section, add Pixel Presentation, Supplemental Palette Color LUTs, Volumetric Properties and Volume Based Calculation Technique
C.8.13.1.1 Enhanced MR Image Module Attribute Description
C.8.13.1.1.1 Image Type and Frame Type

The Image Type (0008,0008) and Frame Type (0008,9007) are not included in this Macro but one or the other is always included in the Module or Macro that invokes this Macro, and they are therefore described here.

In addition to the requirements specified in C.8.16.1 Image Type and Frame Type, the following additional requirements and Defined Terms are specified.


C.8.13.1.1.1.1 Pixel Data Characteristics

Value 1 of Image Type (0008,0008) and Frame Type (0008,9007) is discussed in C.8.16.1.1. No additional requirements or Defined Terms.
C.8.13.1.1.1.2 Patient Examination Characteristics

Value 2 of Image Type (0008,0008) and Frame Type (0008,9007) is discussed in C.8.16.1.2. No additional requirements or Defined Terms.
C.8.13.11.1.3 Image Flavor

Table C.8-83 specifies the Defined Terms for MR additional to those defined in C.8.16.1.3 for Value 3 for Image Type (0008,0008) and Frame Type (0008,9007).

Table C.8-83


MR-SPECIFIC IMAGE TYPE AND FRAME TYPE VALUE 3

Defined Term Name

Defined Term Description

ANGIO_TIME

Angio time acquisition (peripheral vascular/carotid)

CINE

Cardiac CINE

DIFFUSION

Collected to show diffusion effects.

FLOW_ENCODED

Flow Encoded

FLUID_ATTENUATED

Fluid Attenuated T2 weighted

FMRI

Collected for functional imaging calculations.

MAX_IP

Maximum Intensity Projection

MIN_IP

Minimum Intensity Projection

M_MODE

Image line over time

METABOLITE_MAP

Metabolite Maps from spectroscopy data

MULTIECHO

Multiple echoes with different contrast weighting (e.g. proton density and T2 weighted)

PROTON_DENSITY

Proton density weighted

REALTIME

Real-time collection of single slices

STIR

Short Tau Inversion Recovery

TAGGING

Images with superposition of thin saturation bands

TEMPERATURE

Images record temperature

T1

T1 weighted

T2

T2 weighted

T2_STAR

T2* weighted

TOF

Time Of Flight weighted

VELOCITY

Velocity encoded


C.8.13.1.1.1.4 Derived Pixel Contrast

Table C.8-84 specifies the Defined Terms for MR additional to those defined in C.8.16.1.4 for Value 4 for Image Type (0008,0008) and Frame Type (0008,9007).

Table C.8-84


MR-SPECIFIC IMAGE TYPE AND FRAME TYPE VALUE 4

Defined Term Name

Defined Term Description

ADC

Apparent Diffusion Coefficient

DIFFUSION

Diffusion weighted

DIFFUSION_ANISO

Diffusion Anisotropy

DIFFUSION_ATTNTD

Diffusion Attenuated. Derived by removing the T2 contributions from a Diffusion Weighted image.

METABOLITE_MAP

Metabolite Maps from spectroscopy data

NEI

Created through Negative Enhancement Integral operation

R_COEFFICIENT

R-Coefficient Map (fMRI)

RHO

Proton Density map

SCM

Signal Change Map

SNR_MAP

Signal to Noise Map

T1_MAP

T1 Map

T2_STAR_MAP

T2* Map

T2_MAP

T2 Map

TCS

Time Course of Signal

TEMPERATURE

Temperature encoded

VELOCITY

Velocity encoded

Re-number Bits Allocated and Bits Stored sections.
C.8.13.1.1.12 Photometric Interpretation, Pixel Representation, Samples per Pixel, Planar Configuration, Bits Allocated and Bits Stored

Table C.8-80 specifies the Enumerated Values and combinations of Samples per Pixel (0028,0002), Planar Configuration (0028,0006), Pixel Representation (0028,0103), Bits Allocated (0028,0100) and Bits Stored (0028,0101) for each allowable Photometric Interpretation allowed by the IOD that invokes this Module.

Table C.8-80


ALLOWED COMBINATIONS OF ATTRIBUTE VALUES
FOR PHOTOMETRIC INTERPRETATION, SAMPLES PER PIXEL, PLANAR CONFIGURATION, PIXEL REPRESENTATION, BITS ALLOCATED AND BITS STORED

Photometric Interpretation

Samples per Pixel

Planar Configuration

Pixel Representation

Bits Allocated

Bits Stored

MONOCHROME2

1

-

0 or 1

8

8

MONOCHROME2

1

-

0 or 1

16

12, 16

RGB

3

0

0

8

8

YBR_ICT

3

0

0

8

8

YBR_RCT

3

0

0

8

8

YBR_PARTIAL_420

3

0

0

8

8

YBR_FULL_422

3

0

0

8

8

Add Pixel Presentation, Supplemental Palette Color LUTs, Volumetric Properties and Volume Based Calculation Technique
C.8.13.1.1.3 Pixel Presentation

See C.8.16.2.1.1. No additional requirements or Defined Terms.
C.8.13.1.1.3.1 Supplemental Palette Color LUTs

See C.8.16.2.1.1.1.
C.8.13.1.1.4 Volumetric Properties

See C.8.16.2.1.2. No additional requirements or Defined Terms.
C.8.13.1.1.5 Volume Based Calculation Technique Attribute

See C.8.16.2.1.3. No additional requirements or Defined Terms.

C.8.13.2 MR Image and Spectroscopy Instance Macro




Change the references in table C.8-82 to the sections below the table.

C.8.13.3 MR Image Description Macro


This section describes the MR Image Description Macro.

Table C.8-82 specifies the attributes of the MR Image Description Macro.



Table C.8-82
MR IMAGE DESCRIPTION MACRO ATTRIBUTES

Attribute Name

Tag

Type

Attribute Description

Complex Image Component

(0008,9208)

1

Representation of complex data of frames in the SOP Instance. See C.8.13.3.1.51 for a description and Defined Terms.

Acquisition Contrast

(0008,9209)

1

Indication of acquisition contrast used with frames in the SOP Instance. See C.8.13.3.1.62 for a description and Defined Terms.


C.8.13.3.1 MR Image Description Attribute Description

Delete Image Type and Frame Type, Pixel Presenation, Supplemental Color LUTs, Volumetric Properties and Volume Based Calculation (are moved to C.8.13.1.1)
C.8.13.3.1.1 Image Type and Frame Type

The Image Type (0008,0008) and Frame Type (0008,9007) are not included in this Macro but one or the other is always included in the Module or Macro that invokes this Macro, and they are therefore described here.

In addition to the requirements specified in C.8.16.1 Image Type and Frame Type, the following additional requirements and Defined Terms are specified.
C.8.13.3.1.1.1 Pixel Data Characteristics

Value 1 of Image Type (0008,0008) and Frame Type (0008,9007) is discussed in C.8.16.1.1. No additional requirements or Defined Terms.
C.8.13.3.1.1.2 Patient Examination Characteristics

Value 2 of Image Type (0008,0008) and Frame Type (0008,9007) is discussed in C.8.16.1.2. No additional requirements or Defined Terms.
C.8.13.3.1.1.3 Image Flavor

Table C.8-83 specifies the Defined Terms for MR additional to those defined in C.8.16.1.3 for Value 3 for Image Type (0008,0008) and Frame Type (0008,9007).

Table C.8-83
MR-SPECIFIC IMAGE TYPE AND FRAME TYPE VALUE 3


Defined Term Name

Defined Term Description

ANGIO_TIME

Angio time acquisition (peripheral vascular/carotid)

CINE

Cardiac CINE

DIFFUSION

Collected to show diffusion effects.

FLOW_ENCODED

Flow Encoded

FLUID_ATTENUATED

Fluid Attenuated T2 weighted

FMRI

Collected for functional imaging calculations.

MAX_IP

Maximum Intensity Projection

MIN_IP

Minimum Intensity Projection

M_MODE

Image line over time

METABOLITE_MAP

Metabolite Maps from spectroscopy data

MULTIECHO

Multiple echoes with different contrast weighting (e.g. proton density and T2 weighted)

PROTON_DENSITY

Proton density weighted

REALTIME

Real-time collection of single slices

STIR

Short Tau Inversion Recovery

TAGGING

Images with superposition of thin saturation bands

TEMPERATURE

Images record temperature

T1

T1 weighted

T2

T2 weighted

T2_STAR

T2* weighted

TOF

Time Of Flight weighted

VELOCITY

Velocity encoded


C.8.13.3.1.1.4 Derived Pixel Contrast

Table C.8-84 specifies the Defined Terms for MR additional to those defined in C.8.16.1.4 for Value 4 for Image Type (0008,0008) and Frame Type (0008,9007).

Table C.8-84
MR-SPECIFIC IMAGE TYPE AND FRAME TYPE VALUE 4


Defined Term Name

Defined Term Description

ADC

Apparent Diffusion Coefficient

DIFFUSION

Diffusion weighted

DIFFUSION_ANISO

Diffusion Anisotropy

DIFFUSION_ATTNTD

Diffusion Attenuated. Derived by removing the T2 contributions from a Diffusion Weighted image.

METABOLITE_MAP

Metabolite Maps from spectroscopy data

NEI

Created through Negative Enhancement Integral operation

R_COEFFICIENT

R-Coefficient Map (fMRI)

RHO

Proton Density map

SCM

Signal Change Map

SNR_MAP

Signal to Noise Map

T1_MAP

T1 Map

T2_STAR_MAP

T2* Map

T2_MAP

T2 Map

TCS

Time Course of Signal

TEMPERATURE

Temperature encoded

VELOCITY

Velocity encoded


C.8.13.3.1.2 Pixel Presentation

See C.8.16.2.1.1. No additional requirements or Defined Terms.
C.8.13.3.1.2.1 Supplemental Palette Color LUTs

See C.8.16.2.1.1.1.
C.8.13.3.1.3 Volumetric Properties

See C.8.16.2.1.2. No additional requirements or Defined Terms.
C.8.13.3.1.4 Volume Based Calculation Technique Attribute

See C.8.16.2.1.3. No additional requirements or Defined Terms.
C.8.13.3.1.51 Complex Image Component

The value of the Complex Image Component attribute (0008,9208) shall be used to indicate which component of the complex representation of the signal is represented in the pixel data.

Table C.8-85 specifies the Defined Terms for Complex Image Component attribute (0008,9208).

Table C.8-85
COMPLEX IMAGE COMPONENT ATTRIBUTE VALUES


Defined Term Name

Defined Term Description

MAGNITUDE

The magnitude component of the complex image data.

PHASE

The phase component of the complex image data.

REAL

The real component of the complex image data.

IMAGINARY

The imaginary component of the complex image data.

MIXED

Used only as a value in Complex Image Component (0008,9208) in the Enhanced MR Image Module if frames within the image SOP Instance contain different values for the Complex Image Component attribute in the MR Frame Type Functional Group.


C.8.13.3.1.62 Acquisition Contrast

Table C.8-86 specifies the Defined Terms for Acquisition Contrast attribute (0008,9209).

Table C.8-86


ACQUISITION CONTRAST VALUES

Defined Term Name

Defined Term Description

DIFFUSION

Diffusion weighted contrast

FLOW_ENCODED

Flow Encoded contrast

FLUID_ATTENUATED

Fluid Attenuated T2 weighted contrast

PERFUSION

Perfusion weighted contrast

PROTON_DENSITY

Proton Density weighted contrast

STIR

Short Tau Inversion Recovery

TAGGING

Superposition of thin saturation bands onto image

T1

T1 weighted contrast

T2

T2 weighted contrast

T2_STAR

T2* weighted contrast

TOF

Time Of Flight weighted contrast

UNKNOWN

Value should be UNKNOWN if acquisition contrasts were combined resulting in an unknown contrast. Also this value should be used when the contrast is not known.

MIXED

Used only as a value in Acquisition Contrast (0008,9209) attribute in the Enhanced MR Image Type Module if frames within the image SOP Instance contain different values for the Acquisition Contrast attribute in the MR Frame Type Functional Group.


C.8.13.5.1 MR Image Frame Type Macro

Table C.8-88 specifies the attributes of the MR Image Frame Type Functional Group macro.

Table C.8-88


MR IMAGE FRAME TYPE MACRO ATTRIBUTES

Attribute Name

Tag

Type

Attribute Description

MR Image Frame Type Sequence

(0018,9226)

1

Identifies the characteristics of this frame. Only a single Item shall be permitted in this sequence.

>Frame Type

(0008,9007)

1

Type of Frame. A multi-valued attribute analogous to the Image Type (0008,0008).

Enumerated Values and Defined Terms are the same as those for the four values of the Image Type (0008,0008) attribute, except that the value MIXED is not allowed. See C.8.16.1 and C.8.13.31.1.1.



>Include Common CT/MR Image Description Macro' Table C.8-131




>Include 'MR Image Description Macro' Table C.8-82





C.8.16.2.1.1 Pixel Presentation

Table C.8-132
PIXEL PRESENTATION ATTRIBUTE VALUES

Enumerated Value Name

Enumerated Value Description

COLOR

Image is best displayed in color using Supplemental Palette Color LUTs, but can be displayed in grayscale if current display does not support color. See section C.8.13.3.1.2.11.1.3.1.

MONOCHROME

Image is intended to be displayed in grayscale only. No Supplemental Palette Color LUTs are supplied.

MIXED

Used only as a value in Pixel Presentation (0008,9205) in the Enhanced MR Image Module or Enhanced CT Image Module if frames within the image SOP Instance contain different values for the Pixel Presentation attribute in the MR Image Frame Type Functional Group or CT Image Frame Type Functional Group.

TRUE_COLOR

Image can be displayed in color only






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