Comparison of radiation dose estimates, image noise, and scan duration in pediatric body imaging for volumetric and helical modes on 320-detector CT and helical mode on 64-detector CT

Abstract

Dose savings can be achieved for chest, abdomen/pelvis and chest/abdomen/pelvis examinations on 320-detector CT compared to helical acquisition on 64-detector CT, with shorter scan durations. Although noise differences between some modes reached statistical significance, this is of doubtful diagnostic significance and will be studied further in a clinical setting.

Diagnostic Performance and Dose Comparison of Filtered Back Projection and Adaptive Iterative Dose Reduction Three-dimensional CT Enterography in Children and Young Adults

“…The most common indications for CT enterography other than known inflammatory bowel disease were abdominal pain in 41 patients, diarrhea in 28 patients, and blood in the stool in 25 patients. For the entire group, 28 of 118 (24%) had been given a diagnosis of either Crohn disease or ulcerative colitis at the time of imaging (21 No statistical difference was found in age, weight, or effective diameter in patients in the FBP and AIDR 3D groups. A significant difference (P = .001) was found in the sex of patients between the two groups, with the AIDR 3D cohort more heavily comprising male patients (48 of 68, 71%) than the FBP group (19 of 50, 38%) ( Table 2).…”

Automated CT Scan Scores of Bronchiectasis and Air Trapping in Cystic Fibrosis

“…CT scan study can be performed in seconds using a dose , 2 mSv. 48 Current CT scanning technology would allow longitudinal comparison of airway counts and LAD (%).…”

Overview of CT technologies for children

“…Likewise, with volume-type CT (e.g., 320-slice scanner) rapid scanning with reduction in motion artifact improves the image-quality aspect of pediatric CT. Recent publications have noted a potential reduction of 15-46% in radiation dose for pediatric abdomen/pelvis [19] and thoracic [20] CT, and potential dose savings and improved image quality with cardiac CT [21].…”