...
Test the exposure parameters in the imaging utility (Go to Imaging Utility (Review the 'Imaging Utility Section' on the User Guide).
Set the exposure parameters in the Measurement Editor (DAQ > Measurement Editor). Review next section.
Adjust the automatic image processing settings (Image Processing Secion section on the User Guide)
NOTE: Ask the PP technitian to help
...
with these steps.
Set exposure parameters
- Select DAQ > Measurement Editor from the IMS panel menu. This window allows the user to view and adjust the XMSL Data Acquisition (DAQ) parameters (Figure 2).
- Interval: Number of centimeters the core will move between each image. This value is hardcoded in the IMS software and cannot be changed in this window. This interval guarantees image overlap and maximizes system efficiency. Default interval is set at 12 cm.
- Width: Fixed length of the image produced. This value is dependent on the detector and hardware setup. Each image is 15 cm in length, but due to projection, we see less than 15 cm of the core section in the image.
- Stack: Number of x-radiographs taken at each position. These images are stacked and averaged to produce the final raw image. Twenty images is the standard as stacking more images does not appear to improve the image quality further. See the User Guide, Image Stacking section for more explanation.
- Exposure Time: The duration of each exposure in milliseconds.
- kV: X-ray tube voltage. Maximum voltage for the source is 120 kV. Lowering the voltage while maintaining the number of x-rays penetrating the core (longer exposure or higher current) will increase image contrast.
- mA: X-ray tube current. Maximum current for the source is 1 mA. Increasing the current will increase contrast if voltage is kept constant.
...