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- 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, but maximizes system efficiency.
- Width: This is the 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. For example, with 12 cm of motion, we are seeing 12 cm of core in a 15 cm image.
- Stack: The number of x-radiographs to take 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 Image Stacking section for more explanation.
- Exposure Time: The duration of each exposure in milliseconds.
- X-Ray on Time: Time needed to image a full section keeping the x-rays on between images. Recommended: 300 ms. This time helps to avoid black images.
- 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.
Each of the stacked images is taken with the exposure time, kV, and mA set in this window. To estimate the length of time it takes for each image at specific settings, multiply the exposure time by the number of stacked images.
Figure 14- XMSL Measurement Editor Window
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