TID 4020 CAD Image Library Entry
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### TID 4020 CAD Image Library Entry

Each instance of the Image Library Entry template contains the Image SOP Class and Instance UIDs, and selected attributes for an image that facilitate spatial analysis without having to retrieve the entire set of referenced images. If values for the attributes are not present in the Image SOP Instance, then as many of the attributes as possible should be derived.

Table TID 4020. Parameters

Parameter Name | Parameter Usage
--- | ---
$ImageLaterality | Coded term or Context Group for Image Laterality
$ImageView | Coded term or Context Group for Image View
$ImageViewMod | Coded term or Context Group for Image View Modifier

Type:

  Extensible

Order:

  Significant

Table TID 4020. CAD Image Library Entry

| NL | Rel with Parent | VT | Concept Name | VM | Req Type | Condition | Value Set Constraint
--- | --- | --- | --- | --- | --- | --- | --- | ---
1 |  |  | IMAGE |  | 1 | M |  |
2 | > | HAS ACQ CONTEXT | CODE | EV (111027, DCM, "Image Laterality") | 1 | MC | Shall be present if (0020,0062) is in the Image Instance | $ImageLaterality
3 | > | HAS ACQ CONTEXT | CODE | EV (111031, DCM, "Image View") | 1 | MC | Shall be present if (0054,0220) is in the Image Instance | $ImageView
4 | >> | HAS CONCEPT MOD | CODE | EV (111032, DCM, "Image View Modifier") | 1-n | MC | Shall be present if (0054,0222) is in the Image Instance | $ImageViewMod
5 | > | HAS ACQ CONTEXT | TEXT | EV (111044, DCM, "Patient Orientation Row") | 1 | MC | Shall be present if (0020,0020) is in the Image Instance |
6 | > | HAS ACQ CONTEXT | TEXT | EV (111043, DCM, "Patient Orientation Column") | 1 | MC | Shall be present if (0020,0020) is in the Image Instance |
7 | > | HAS ACQ CONTEXT | DATE | EV (111060, DCM, "Study Date") | 1 | MC | Shall be present if (0008,0020) is in the Image Instance |
8 | > | HAS ACQ CONTEXT | TIME | EV (111061, DCM, "Study Time") | 1 | MC | Shall be present if (0008,0030) is in the Image Instance |
9 | > | HAS ACQ CONTEXT | DATE | EV (111018, DCM, "Content Date") | 1 | MC | Shall be present if (0008,0023) is in the Image Instance |
10 | > | HAS ACQ CONTEXT | TIME | EV (111019, DCM, "Content Time") | 1 | MC | Shall be present if (0008,0033) is in the Image Instance |
11 | > | HAS ACQ CONTEXT | NUM | EV (111026, DCM, "Horizontal Pixel Spacing") | 1 | MC | Shall be present if (0018,1164) or (0028,0030) is in the Image Instance | UNITS = EV (um, UCUM, "micrometer") UNITS = EV (mm, UCUM, "millimeter")
12 | > | HAS ACQ CONTEXT | NUM | EV (111066, DCM, "Vertical Pixel Spacing") | 1 | MC | Shall be present if (0018,1164) or (0028,0030) is in the Image Instance | UNITS = EV (um, UCUM, "micrometer") UNITS = EV (mm, UCUM, "millimeter")
13 | > | HAS ACQ CONTEXT | NUM | EV (112011, DCM, "Positioner Primary Angle") | 1 | UC | May be present if (0018,1510) is in the Image Instance |
14 | > | HAS ACQ CONTEXT | NUM | EV (112012, DCM, "Positioner Secondary Angle") | 1 | UC | May be present if (0018,1511) is in the Image Instance |
15 | > | HAS ACQ CONTEXT | NUM | EV (112226, DCM, "Spacing between slices") | 1 | UC | May be computed from the Image Position (Patient) (0020,0032) projected onto the normal to the Image Orientation (Patient) (0020,0037) if present; may or may not be the same as the Spacing Between Slices (0018,0088) if present. | UNITS = EV (mm, UCUM, "millimeter")
16 | > | HAS ACQ CONTEXT | NUM | EV (112225, DCM, "Slice Thickness") | 1 | UC | May be present if Slice Thickness (0018,0050) is in the Image Instance. | UNITS = EV (mm, UCUM, "millimeter")
17 | > | HAS ACQ CONTEXT | UIDREF | EV (112227, DCM, "Frame of Reference UID") | 1 | UC | May be present if Frame of Reference UID (0020,0052) is in the Image Instance. |
18 | > | HAS ACQ CONTEXT | NUM | EV (110901, DCM, "Image Position (Patient) X") | 1 | UC | May be present if Image Position (Patient) (0020,0032) is in the Image Instance, and is the first value of Image Position (Patient) (0020,0032) for the referenced image or frame. | UNITS = EV (mm, UCUM, "millimeter")
19 | > | HAS ACQ CONTEXT | NUM | EV (110902, DCM, "Image Position (Patient) Y") | 1 | MC | Shall be present if Row 18 is present, and is the second value of Image Position (Patient) (0020,0032) in the Image Instance for the referenced image or frame. | UNITS = EV (mm, UCUM, "millimeter")
20 | > | HAS ACQ CONTEXT | NUM | EV (110903, DCM, "Image Position (Patient) Z") | 1 | MC | Shall be present if Row 18 is present, and is the second value of Image Position (Patient) (0020,0032) in the Image Instance for the referenced image or frame. | UNITS = EV (mm, UCUM, "millimeter")
21 | > | HAS ACQ CONTEXT | NUM | EV (110904, DCM, "Image Orientation (Patient) Row X") | 1 | UC | May be present if Image Position (Patient) (0020,0037) is in the Image Instance, and is the first value of Image Orientation (Patient) (0020,0037) for the referenced image or frame. | UNITS = EV ({-1:1}, UCUM, "{-1:1}")
22 | > | HAS ACQ CONTEXT | NUM | EV (110905, DCM, "Image Orientation (Patient) Row Y") | 1 | MC | Shall be present if Row 21 is present, and is the second value of Image Orientation (Patient) (0020,0037) in the Image Instance for the referenced image or frame. | UNITS = EV ({-1:1}, UCUM, "{-1:1}")
23 | > | HAS ACQ CONTEXT | NUM | EV (110906, DCM, "Image Orientation (Patient) Row Z") | 1 | MC | Shall be present if Row 21 is present, and is the third value of Image Orientation (Patient) (0020,0037) in the Image Instance for the referenced image or frame. | UNITS = EV ({-1:1}, UCUM, "{-1:1}")
24 | > | HAS ACQ CONTEXT | NUM | EV (110907, DCM, "Image Orientation (Patient) Column X") | 1 | MC | Shall be present if Row 21 is present, and is the fourth value of Image Orientation (Patient) (0020,0037) in the Image Instance for the referenced image or frame. | UNITS = EV ({-1:1}, UCUM, "{-1:1}")
25 | > | HAS ACQ CONTEXT | NUM | EV (110908, DCM, "Image Orientation (Patient) Column Y") | 1 | MC | Shall be present if Row 21 is present, and is the fifth value of Image Orientation (Patient) (0020,0037) in the Image Instance for the referenced image or frame. | UNITS = EV ({-1:1}, UCUM, "{-1:1}")
26 | > | HAS ACQ CONTEXT | NUM | EV (110909, DCM, "Image Orientation (Patient) Column Z") | 1 | MC | Shall be present if Row 21 is present, and is the sixth value of Image Orientation (Patient) (0020,0037) in the Image Instance for the referenced image or frame. | UNITS = EV ({-1:1}, UCUM, "{-1:1}")
27 | > | HAS ACQ CONTEXT | NUM | EV (110910, DCM, "Pixel Data Rows") | 1 | UC | May be present if Rows (0028,0010) is in the Image Instance. | UNITS = EV ({pixels}, UCUM, "pixels")
28 | > | HAS ACQ CONTEXT | NUM | EV (110911, DCM, "Pixel Data Columns") | 1 | MC | Shall be present if Row 27 is present, and is the value of Columns (0028,0011) in the Image Instance. | UNITS = EV ({pixels}, UCUM, "pixels")

Content Item Descriptions

Patient Orientation Row | First (row) and second (column) components of Patient Orientation (0020,0020) in the Image IOD. See Section C.7.6.1.1.1 in PS3.3 .
Patient Orientation Column
Horizontal Imager Pixel Spacing | The row (first) component of Imager Pixel Spacing (0018,1164) in the Image IOD. See Section C.8.11.4 in PS3.3 .
Vertical Imager Pixel Spacing | The column (second) component of Imager Pixel Spacing (0018,1164) in the Image IOD. See Section C.8.11.4 in PS3.3 .

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