The group led by Luuk Oostveen of Radboud University Medical Center in Nijmegen compared the technical performances of the Aquilion Precision ultrahigh-resolution CT scanner (Canon Medical Systems) and the Aquilion One Genesis MDCT system (Canon) using standard procedures and phantoms. The researchers found that the Precision scanner's high-resolution and superhigh-resolution mode resulted in double the spatial resolution, but with an approximate 23% increase in dose required to achieve the same low-contrast detectability.
"With abdominal settings, [ultrahigh-resolution CT] needs higher dose for the same low-contrast detectability as MDCT, but dose is still below achievable levels as defined by current diagnostic reference levels," the authors wrote.
In addition, the scanner's normal-resolution mode provided spatial resolution and noise characteristics comparable to those of the MDCT system.
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