![]() ![]() Furthermore, as overall scan time increases, scans are at greater risk of being affected by sample movement, which can make the data unusable. However, the benefits of increased overall scan time diminish considerably at scan times of 50 minutes or more. We find that contrast to noise ratio and calculated shell volume increase and the variability in shell volume measurements decrease with increasing overall scan time. Here we conduct two sets of trials to test how exposure time, the number of x-ray radiographs averaged per view, and overall scan time affect the quality of CT scan data, assessed using signal and contrast to noise ratios and the repeatability of measurements derived from these data, in this case the calculated volume of pteropod shells. However, despite its prominence, there have not been systematic investigations into how CT scan parameters affect data quality and reproducibility. ABSTRACTĬomputed tomographic (CT) scanning is becoming a popular research tool across earth and life sciences. Plain-language and multi-lingual abstracts SessaĬopyright Paleontological Society, March 2020 Testing the impact of two key scan parameters on the quality and repeatability of measurements from CT scan data ![]()
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