PMID- 24943252
OWN - NLM
STAT- MEDLINE
DCOM- 20141118
LR  - 20161125
IS  - 1532-3145 (Electronic)
IS  - 0363-8715 (Linking)
VI  - 38
IP  - 5
DP  - 2014 Sep-Oct
TI  - Optimizing image quality for pediatric torso computed tomography: the use of 
      advanced iterative reconstruction and wide-detector scanning techniques.
PG  - 786-9
LID - 10.1097/RCT.0000000000000122 [doi]
AB  - OBJECTIVES: To compare radiation exposure and image quality in children 
      undergoing torso helical acquisition computed tomography (CT) using filtered back 
      projection (FBP) or adaptive iterative dose reduction (AIDR) 3D reconstruction 
      algorithms. A secondary purpose is to compare radiation exposure and image 
      quality in children undergoing torso CT acquired with helical or wide-detector 
      techniques reconstructed with AIDR 3D. METHODS: The study was approved by the 
      institutional review board. Phase 1 included 200 helical torso CT studies: 100 
      using FBP and 100 using AIDR 3D. The size-specific dose estimate (SSDE) was 
      calculated for each study. Region of interest (ROI) noise measurements were 
      recorded in the thorax, abdomen, and pelvis for each study. Unpaired t tests 
      compared SSDE and image noise for each group. Phase 2 included 100 wide-detector 
      CT torso studies using AIDR 3D. Size-specific dose estimate and ROI noise 
      measurements were calculated. Unpaired t tests compared helical and wide-detector 
      SSDE and ROI. Additional t tests looked for age- and weight-specific differences 
      in the helical and wide-detector groups. RESULTS: Phase 1: AIDR 3D showed 
      significant reduction in SSDE (P = 0.0001) and significant improvement in image 
      quality. Phase 2: no significant difference in SSDE was observed. Children 
      younger than 6 years had a significant reduction in SSDE with wide-detector 
      technique (P = 0.0445) with no loss in image quality. CONCLUSIONS: Adaptive 
      iterative dose reduction 3D produces significant reduction in radiation dose 
      without degradation to image quality compared with FBP. Significant dose 
      reduction without loss of image quality can also be obtained in younger, smaller 
      children using wide-detector technique.
FAU - Buchmann, Robert F
AU  - Buchmann RF
AD  - From the Department of Radiology, Arkansas Children's Hospital, Little Rock, AR.
FAU - Bruce Greenberg, S
AU  - Bruce Greenberg S
LA  - eng
PT  - Journal Article
PT  - Randomized Controlled Trial
PL  - United States
TA  - J Comput Assist Tomogr
JT  - Journal of computer assisted tomography
JID - 7703942
SB  - IM
MH  - Adolescent
MH  - *Algorithms
MH  - Child
MH  - Child, Preschool
MH  - Female
MH  - Humans
MH  - Imaging, Three-Dimensional/*methods
MH  - Infant
MH  - Infant, Newborn
MH  - Male
MH  - *Radiation Dosage
MH  - Radiation Protection/*methods
MH  - Radiographic Image Enhancement/methods
MH  - Radiographic Image Interpretation, Computer-Assisted/methods
MH  - Radiography, Thoracic/*methods
MH  - Radiometry
MH  - Reproducibility of Results
MH  - Sensitivity and Specificity
MH  - Tomography, X-Ray Computed/*methods
MH  - Torso/*diagnostic imaging
EDAT- 2014/06/20 06:00
MHDA- 2014/11/19 06:00
CRDT- 2014/06/20 06:00
PHST- 2014/06/20 06:00 [entrez]
PHST- 2014/06/20 06:00 [pubmed]
PHST- 2014/11/19 06:00 [medline]
AID - 10.1097/RCT.0000000000000122 [doi]
PST - ppublish
SO  - J Comput Assist Tomogr. 2014 Sep-Oct;38(5):786-9. doi: 
      10.1097/RCT.0000000000000122.