Although the increasing use of CT has led to tremendous advances in modern medical practice, this trend has been accompanied by a growing concern for patient safety, because CT delivers higher doses of radiation than do most other diagnostic imaging procedures . The risk model estimations and results of recent large-scale epidemiologic studies have predicted an increased risk of cancer associated with CT radiation exposure in radiosensitive children and adolescents [2–7]. Therefore, reducing the exposure dose while maintaining the image quality is important.
Description of activity and work performed
We retrospectively assigned sixty children that have underwent computed tomography (CT) examination between June 2014 and August 2018. We divided them into two groups (The 30 patients CT examination with conventional method from June 2014 to August 2016 and the 30 pediatric patients CT examination with new method from June 2016 to August 2018).
The conventional method for group A performed at 3 steps (1. Obtain the front scout view, 2. Obtain the side scout view, and 3. Main scan). The new method for...
Conclusion and recommendations
In the phantom study, it is reported that the radiation dose will change due to different heights of the bed when using ATCM for inspection . Therefore, we think that variation of the radiation dose and SD value of the CT number during the uncorrected group (Group A) is higher than for the corrected group (Group B).
SD value of CT number of the uncorrected group (Group A) was significantly higher than that of the corrected group (Group B). Toth reported that variations in dose...
T. Yoshiura; Hiroshima/JP - Speaker at Tsuchiya General Hospital - Author at Tsuchiya General Hospital T. Masuda; Hiroshima/JP - Author at Tsuchiya General Hospital Y. Matsumoto; Hiroshima/JP - Author at Tsuchiya General Hospital T. Ishibashi; Hiroshima/JP - Author at Tsuchiya General Hospital T. Oku; Hiroshima/JP - Author at Tsuchiya General Hospital
 Brenner DJ, Hall EJ. Computed tomography—an increasing source of radiation exposure. N Engl J Med 2007;357(22):2277–2284.
 Brenner D, Elliston C, Hall E, Berdon W. Estimated risks of radiation-induced fatal cancer from pediatric CT. AJR Am J Roentgenol 2001;176(2):289–296.
 Berrington de González A, Mahesh M, Kim KP, et al. Projected cancer risks from computed tomographic scans performed in the United States in 2007. Arch Intern Med
 Miglioretti DL, Johnson E, Williams A, et al. The use of computed tomography in pediatrics...