C.8.29.2 Scan Procedure Module
Prev | C.8.29 Optical Surface Scanner Modules | Next

#### C.8.29.2 Scan Procedure Module

Table C.8.29-2 specifies the Attributes of the Scan Procedure Module.

Table C.8.29-2. Scan Procedure Attributes

Attribute Name | Tag | Type | Attribute Description
--- | --- | --- | ---
Surface Scan Acquisition Type Code Sequence | (0080,0001) | 1 | Specify the type of acquisition method. For evaluation of the characteristics or quality of the data. Only a single Item shall be included in this sequence.
>Include Table 8.8-1 “Code Sequence Macro Attributes” | Baseline CID 8201 “Surface Scan Acquisition Types”.
Surface Scan Mode Code Sequence | (0080,0002) | 2 | Used scan mode. Zero or more Items shall be included in this sequence.
>Include Table 8.8-1 “Code Sequence Macro Attributes” | Baseline CID 8202 “Surface Scan Mode Types”.
Registration Method Code Sequence | (0080,0003) | 1C | Method for registering multiple shots. Required if the IOD stores data that has been derived from multiple shots. Only a single Item shall be included in this sequence.
>Include Table 8.8-1 “Code Sequence Macro Attributes” | Baseline CID 8203 “Surface Scan Registration Method Types”.
Instance Number | (0020,0013) | 1 | A number that identifies this shot. Shall start at 1 and monotonically increase by 1 within a single acquisition.
Acquisition Number | (0020,0012) | 1 | A number identifying the single continuous gathering of data over a period of time that resulted in this instance.
Acquisition DateTime | (0008,002A) | 1 | The date and time that the acquisition of data that resulted in this instance started.
Shot Duration Time | (0080,0004) | 1 | The time in seconds from the start of this shot until the end of this shot.
Shot Offset Time | (0080,0005) | 3 | The time in seconds from the Acquisition DateTime to the start of this shot.

##### C.8.29.2.1 Scan Procedure Attribute Descriptions

###### C.8.29.2.1.1 Shot Duration Time and Shot Offset Time

Figure C.8.29.2-1 depicts the usages of some of the attributes of the Scan Procedure Module.

The Shot Offset Time is the time required for the detection of focus points and exposure time settings.

The Shot Duration Time is the time required to acquire a surface from the scanned object.

Figure C.8.29.2-1. Timing Attributes Illustration

Prev | Up | Next
C.8.29 Optical Surface Scanner Modules | Home | C.8.30 Corneal Topography Map Modules