Image Type Attribute
| Tag | (0008,0008) |
|---|---|
| Type | Required (1) |
| Keyword | ImageType |
| Value Multiplicity | 2-n |
| Value Representation | Code String (CS) |
| Example Values |
|
Image identification characteristics.
See Section C.8.11.7.1.4 for specialization.
Section C.8.11.7.1.4
C.8.11.7.1.4 Image Type
Image Type (0008,0008) Value 1 and Value 2 shall identify the Pixel Data Characteristics in accordance with Section C.8.11.3.1.1.
Value 3 shall be present and have zero length (null value), except when used to identify a stereotactic mammography image, digital breast tomosynthesis projection or generated 2D image, or contrast enhanced image.
Note
-
In a previous version of PS3.3, Value 3 was required to be zero length (null value). If Value 3 is zero length, the image may or may not be a stereotactic mammography image, digital breast tomosynthesis projection or generated 2D image, or contrast enhanced image, if the Instance was created before these terms were defined.
-
See Section 6.4 “Value Multiplicity (VM) and Delimitation” in PS3.5 for a description of value delimitation.
The Enumerated Values for Value 3 of stereotactic mammography images are listed in Table C.8-74a.
Table C.8-74a. Enumerated Values of Image Type (0008,0008) Value 3 for Stereotactic Mammography
|
Enumerated Value |
Definition |
ACR MQCM Equivalent |
|---|---|---|
|
STEREO_SCOUT |
A localizer image for a stereotactic acquisition. |
…SC |
|
STEREO_MINUS |
The paired image obtained with the X-Ray source angle decreased from the scout position, to determine positioning coordinates prior to needle positioning. |
…ST- |
|
STEREO_PLUS |
The paired image obtained with the X-Ray source angle increased from the scout position, to determine positioning coordinates prior to needle positioning. |
…ST+ |
|
PREFIRE_MINUS |
The paired image obtained with the X-Ray source angle decreased from the scout position, with the biopsy needle in position prior to needle deployment. |
…PRF- |
|
PREFIRE_PLUS |
The paired image obtained with the X-Ray source angle increased from the scout position, with the biopsy needle in position prior to needle deployment. |
…PRF+ |
|
POSTFIRE_MINUS |
The paired image obtained with the X-Ray source angle decreased from the scout position, with the biopsy needle in position following needle deployment through the targeted lesion. |
…POF- |
|
POSTFIRE_PLUS |
The paired image obtained with the X-Ray source angle increased from the scout position, with the biopsy needle in position following needle deployment through the targeted lesion. |
…POF+ |
|
POSTBIOPSY_MINUS |
The image obtained following tissue acquisition with the X-Ray source angle decreased from the scout position. |
…POB- |
|
POSTBIOPSY_PLUS |
The image obtained following tissue acquisition with the X-Ray source angle increased from the scout position. |
…POB+ |
|
POSTBIOPSY |
The image obtained following tissue acquisition with the X-Ray source in the scout position. |
…POB |
|
POSTMARKER_MINUS |
The image obtained following micromarker placement with the X-Ray source angle decreased from the scout position. |
…POM- |
|
POSTMARKER_PLUS |
The image obtained following micromarker placement with the X-Ray source angle increased from the scout position. |
…POM+ |
|
POSTMARKER |
The image obtained following micromarker placement with the X-Ray source in the scout position. |
…POM |
The Enumerated Values for Value 3 of digital breast tomosynthesis projection images and mathematically generated 2D images are:
Table C.8-74b. Enumerated Values of Image Type (0008,0008) Value 3 for Digital Breast Tomosynthesis Projection and Generated 2D Images
|
Enumerated Value |
Definition |
ACR MQCM Equivalent |
|---|---|---|
|
TOMO_PROJ |
Identifies the image as a digital breast tomosynthesis projection image. |
n/a |
|
TOMOSYNTHESIS |
Identifies the image as digital breast tomosynthesis; shall be used only for generated 2D images when no other Value 3 takes precedence. |
n/a |
|
TOMO_SCOUT |
A localizer image that may be used to determine positioning coordinates prior to needle positioning. |
…SC |
|
PREFIRE |
The image obtained with the biopsy needle in position prior to needle deployment. |
…PRF |
|
POSTFIRE |
The image obtained with the biopsy needle in position following needle deployment through the targeted lesion. |
…POF |
|
POSTBIOPSY |
The image obtained following tissue acquisition with the X-Ray source in the scout position. |
…POB |
|
POSTMARKER |
The image obtained following micromarker placement with the X-Ray source in the scout position. |
…POM |
Note
Digital breast tomosynthesis projection images acquired as part of a biopsy procedure (and resulting derived images such as mathematically generated 2D) omit the _MINUS and _PLUS endings because a single digital breast tomosynthesis acquisition produces a set of projection images that replaces the _MINUS and _PLUS image pair used in conventional 2D breast biopsy imaging.
The Enumerated Values for Value 3 of contrast enhanced images are:
Table C.8-74c. Enumerated Values of Image Type (0008,0008) Value 3 for Contrast Enhanced Images
|
Enumerated Value |
Definition |
|---|---|
|
PRE_CONTRAST |
Collected before contrast was administered. |
|
POST_CONTRAST |
Collected during or after contrast was administered. |
If more than one characteristic (biopsy, tomosynthesis, contrast enhanced) applies to an image, Value 3 shall contain the biopsy image type. If biopsy is not involved, Value 3 shall contain the tomosynthesis image type.
Note
For example, Attributes of the Contrast/Bolus Module may be used to identify contrast enhanced characteristics of a biopsy and/or tomosynthesis projection or generated 2D image that is also contrast enhanced.
Value 4 shall be present for images acquired using contrast enhanced digital X-Ray imaging of the breast (but may be empty or absent if none of the Defined Terms applies), and for mathematically generated 2D images. For other images Value 4 remains optional and implementation specific.
Table C.8-74d. Defined Terms of Image Type (0008,0008) Value 4 for Contrast Enhanced and Generated 2D Images
|
Defined Terms |
Definition |
|---|---|
|
GENERATED_2D |
Mathematically generated 2D view. |
|
ADDITION |
Created through Pixel by pixel addition operation. |
|
SUBTRACTION |
Created through Pixel by pixel subtraction operation. |
If more than one characteristic (contrast enhanced, tomosynthesis) applies to an image, Value 4 shall contain the contrast enhanced image type. If contrast enhanced is not involved, Value 4 shall contain the generated 2D image type.
Value 5 shall be present for images acquired using contrast enhanced digital X-Ray imaging of the breast, but may be empty or absent if none of the Defined Terms applies. For non-contrast images Value 5 remains optional and implementation specific.
Table C.8-74e. Defined Terms of Image Type (0008,0008) Value 5 for Contrast Enhanced 2D Images
|
Defined Terms |
Definition |
|---|---|
|
LOW_ENERGY |
Low energy image. |
|
HIGH_ENERGY |
High energy image. |
Note
-
A recipient may use the different values for biopsy, tomosynthesis and contrast views to determine how to display them, for example in hanging protocols. See examples in Table C.8-74f.
-
The entry "empty" in the table indicates that the value is present with zero length and a preceding delimiter (e.g. "Pre-contrast 2D" has two empty values at the end and would be expressed as ORIGINAL\PRIMARY\PRE_CONTRAST\\). Other empty or non-empty values may follow an empty value.
-
The entry "-" in the table indicates that the value is not present and neither is its preceding delimiter (e.g. "Stereotactic post-biopsy" has two absent values at the end and would be expressed as ORIGINAL\PRIMARY\POSTBIOPSY). No other values may follow an absent value.
Table C.8-74f. Example Image Type Values for Mammography Biopsy, Tomosynthesis and Contrast Views (Informative)
|
|
Image Type (0008,0008) Value 3 |
Image Type (0008,0008) Value 4 |
Image Type (0008,0008) Value 5 |
|---|---|---|---|
|
Conventional 2D mammography |
empty |
- |
- |
|
Stereotactic post-biopsy |
POSTBIOPSY |
- |
- |
|
Pre-contrast 2D |
PRE_CONTRAST |
empty |
empty |
|
Post-contrast 2D low energy |
POST_CONTRAST |
empty |
LOW_ENERGY |
|
Post-contrast 2D addition |
POST_CONTRAST |
ADDITION |
empty |
|
Stereotactic scout pre-contrast |
STEREO_SCOUT |
empty |
empty |
|
Stereotactic stereo post-contrast high energy |
STEREO_PLUS |
empty |
HIGH_ENERGY |
|
Stereotactic post-fire post-contrast subtraction |
POSTFIRE_MINUS |
SUBTRACTION |
empty |
|
Tomosynthesis generated 2D |
TOMOSYNTHESIS |
GENERATED_2D |
- |
|
Tomosynthesis biopsy scout generated 2D |
TOMO_SCOUT |
GENERATED_2D |
- |
|
Tomosynthesis generated 2D post-contrast low energy |
TOMOSYNTHESIS |
GENERATED_2D |
LOW_ENERGY |
|
Tomosynthesis generated 2D post-contrast subtraction |
TOMOSYNTHESIS |
SUBTRACTION |
empty |
|
Tomosynthesis projection |
TOMO_PROJ |
- |
- |
|
Tomosynthesis projection post-biopsy |
POSTBIOPSY |
- |
- |
|
Tomosynthesis projection post-biopsy post-contrast subtraction |
POSTBIOPSY |
SUBTRACTION |
empty |