Radiation exposure reduction technology at the time of CT scans advances day by day, and the exposure at the time of the main scan has been greatly reduced. As exposure reduction in this main scan progresses, the ratio of exposure during scout scans is increasing.
Radiation dose reduction is quite important especially in children for their sensitivity and life expectancy. In addition, nurses and radiologists often fix their heads by hand during CT scans of children, and it is important to strive to reduce exposure...
Description of activity and work performed
This retrospective study included 9 patients under the age of 10 who underwent head CT localizer with and without tin filtration. The CT scans performed with SOMATOM Drive (Siemens Healthcare, Germany) with Tin-filter and SOMATOM Force (Siemens Healthcare, Germany) without Tin-filter. Automatic exposure control was used for all scans.
The radiation exposure was assessed as volumetric CT dose index(CTDIvol) and dose-length product (DLP) provided by these scanners.
Image quality analysis
Two radiology technologists categorized the image quality (IQ) using a 3-grade scale (0:Unsuitable...
Conclusion and recommendations
Using the spectral shaping Tin filter for head localizer, the radiation dose could be reduced without deterioration of image quality.
S. Ariyoshi; Ube/JP - nothing to disclose M. Okada; Ube/JP - nothing to disclose K. Takegami; Yamaguchi/JP - nothing to disclose S. Kudomi; Yamaguchi-ken/JP - nothing to disclose K. Ito; Ube/JP - nothing to disclose
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May, M. S. et al....