LG Electronics USA 14HK701G User Manual

How to acquire bright image with X-Ray shot. This procedure is also applied for pediatric patient.

X-ray generator connection is explained in this manual page from 46 to 48.

1 Click the “Acquisition” Button next to Bright Image(s) text.

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2 Implement “X-ray Shot”. Calibration SW will wait X-Ray acknowledge signal from DXD and it will display waiting sign.

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3 Acquired bright image is displayed in list view, please check its name and median value. Actual file is saved “Image” folder in the workspace.

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NOTE

• These acquisition steps are all same to User BPM, Validation and EI image acquisition.

• Calibration SW support Window level adjustment, but does not support other image post-processing function.

• The process of obtaining the image for pediatric patients is same with other patients.

CALIBRATION SOFTWARE

To ensure that optimal image quality is obtained from the detector, the detector must be calibrated. The Calibration Software generates and verifies the values necessary for calibration.

NOTE

• To ensure optimal image quality, you should calibrate every month for the first three months after the purchase and half-yearly calibration thereafter.

• It is recommended that you leave the detector on for 15 minutes before calibrating.

• The default value of Calibration Software could be changed depends on Detector.

Calibration Software

The features of the Calibration Software include Settings, Calibration, User BPM, Validation and Exposure Index.

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Settings

Settings include DXD settings, Calibration SW settings and Firmware Update.

• DXD: Configures the settings required to obtain calibration images and detector settings.

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• Calibration SW: Configures the settings required for to calibrate software algorithms.

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• Firmware Update: Checks the firmware version of the detector or performs the firmware update.

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Calibration

Calibration involves the following procedures.

• Dark Image and Bright Image are obtained from the detector.

- Dark Image: An image obtained without generating X-rays.

- Bright Image: An image obtained by generating X-rays without a phantom or any other object on the detector.

• Generate Avg dark, Offset, and Gain: Used for Corrected Image calculations.

- Corrected Image: An image generated by applying calibration results to a raw image.

• Generate Bad Pixel Map: Bad pixel values are calibrated using surrounding pixel values.

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User BPM

This is used to assign additional bad pixels in BPM.raw after calibrating.

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Validation

This is used to validate the final image by applying calibration results to the image.

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EI(Exposure Index)

This calculates and saves median output value per input dose as a linear expression and a table.

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Image Functions

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Image Viewer

• The Calibration, User BPM, Validation, and EI menus include an image viewer that lets you view the

acquired images.

• An image is loaded and displayed when it is acquired or clicked.

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• Information about the image is displayed in the following sections.

- Image Loaded: Indicates whether an image is loaded in the image area. * When an image is loaded: Image Loaded. * When no image is loaded: Image not Loaded.

- Min: Minimum pixel value within the image area.

- Max: Maximum pixel value within the image area.

- Med: Median value of the image.

- Mean: Mean value of the image.

- Std: Standard deviation value of the image.

- Bad Pixel Count: Bad pixel count in the image area.

- 16B = N, 8B = M: Representation of the pixel value at (x,y) in bits.

- %: Percentage of the image shown in the image area compared to the entire image size.

- (W x H): Size of the entire image.

Navigator

• The Navigator shows the entire area of the acquired image and indicates the zoomed in/out area.

• The red rectangle in the Navigator indicates the area shown in the Image Viewer.

• Clicking a position in the Navigator moves the red rectangle to the position and displays the area in the Image

Viewer.

Histogram

• Histogram of the acquired image is shown here.

• Window / Level can be adjusted for better image distinction.

• Use the <> buttons or the scroll bars below the Histogram graph to adjust Window / Level.

• Click the Reset button to restore the default values.

Reference Point

• When you click a position inside the Image Viewer, a reference point is specified, and the coordinates and pixel

value of the reference point are shown at the top. You can also move the reference point by entering the x and y values manually.

- Since reference point coordinates are numbers, only numeric values can be entered.

Bad Pixel Map Analysis

• Displays the results of bad line and bad pixel class analysis based on the Bad Pixel Map after calibration.

Log

This shows the necessary information about the application execution process that is helpful to the user. It consists of the Date, Time, Type and Details, which are saved as a log file.

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USAGE

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Launching the Program

• Double-click the executable file installed on your PC to launch the calibration software.

• If launching for the first time, the Settings screen appears.

Checking IP Address and Ping Test

• A default IP address is entered for the detector.

• If you change the IP address of the detector, enter the new detector IP address in the detector IP field of the calibration tool.

• For instructions on changing the detector IP address, see "Detector and PC (Wired mode)".

• After entering the IP address, set a timeout value and click the Ping button to perform a Ping Test. A pop-up message appears if the Ping Test is successful.

• The following pop-up window appears if the Ping Test is unsuccessful. If the pop-up window appears, check your PC's network settings, the connection between the detector and PC, the detector status, the Control Box status and

the IP address, then perform the Ping Test again.

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Checking Save Location

While the calibration software is run, the acquired images, logs, result files and factory-default calibration results are saved in the designated location. You can change the storage path in the Save location.

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Click the Apply button when a folder is created in the specified path.

NOTE

• Default: C:\Users\heuser\Documents\LG DXD Calibration

• heuser: User name

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