F.5.27 Spectroscopy Directory Record Definition
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### F.5.27 Spectroscopy Directory Record Definition

The Directory Record is based on the specification of Section F.3. It is identified by a Directory Record Type of Value "SPECTROSCOPY." Table F.5-27 lists the set of keys with their associated Types for such a Directory Record Type. The description of these keys may be found in the Modules related to the MR Spectroscopy IE of MR Spectroscopy IODs. This Directory Record shall be used to reference a Spectroscopy SOP Instance. This type of Directory Record may reference a Lower-Level Directory Entity that includes one or more Directory Records as defined in Table F.4-1.

Table F.5-27. Spectroscopy Keys

Key | Tag | Type | Attribute Description
--- | --- | --- | ---
Specific Character Set | (0008,0005) | 1C | Required if an extended or replacement character set is used in one of the keys.
Image Type | (0008,0008) | 1 |
Content Date | (0008,0023) | 1 |
Content Time | (0008,0033) | 1 |
Instance Number | (0020,0013) | 1 |
Referenced Image Evidence Sequence | (0008,9092) | 1C | Required if present in the spectroscopy instance. One or more Items shall be included in this sequence.
>Include Table C.17-3 “Hierarchical SOP Instance Reference Macro Attributes” |
Number of Frames | (0028,0008) | 1 |
Rows | (0028,0010) | 1 |
Columns | (0028,0011) | 1 |
Data Point Rows | (0028,9001) | 1 |
Data Point Columns | (0028,9002) | 1 |
Icon Image Sequence | (0088,0200) | 3 | This Icon Image is representative of the Spectroscopy instance. Only a single Item is permitted in this Sequence.
>Include Table C.7-11b “Image Pixel Macro Attributes” | See Section F.7.
Any other Attribute of the MR Spectroscopy IE Modules | 3 |

### Note

Because Referenced SOP Instance UID in File (0004,1511) may be used as a "pseudo" Directory Record Key (see Table F.3-3), it is not duplicated in this list of keys.

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