PMID- 30604739
OWN - NLM
STAT- MEDLINE
DCOM- 20190304
LR  - 20231005
IS  - 1643-3750 (Electronic)
IS  - 1234-1010 (Print)
IS  - 1234-1010 (Linking)
VI  - 25
DP  - 2019 Jan 3
TI  - Comparative Study of Volume Computed Tomography Dose Index and Size-Specific Dose 
      Estimate Head in Computed Tomography Examination for Adult Patients Based on the 
      Mode of Automatic Tube Current Modulation.
PG  - 71-76
LID - 10.12659/MSM.913927 [doi]
AB  - BACKGROUND The aim of this study was to compare the metrics of volume computed 
      tomography index (CTDIvol) and size-specific dose estimate (SSDE), and quantity 
      the differences in head CT examinations of adult patients. MATERIAL AND METHODS A 
      total of 157 patients underwent head CT examination were enrolled in this 
      retrospective study. Pearson correlation analysis and linear regression 
      correlation analysis were performed to observe the correlation between the dose 
      metrics of CTDIvol and SSDEaver versus tube current product (mAs) and water 
      equivalent diameter (WED). Correlated factors of CTDIvol and SSDEaver were 
      analyzed by multivariate linear stepwise regression analysis. RESULTS A sum of 
      4239 data settings were measured: slices with WED >16 cm was 71.05%, and the 
      slices with f <1 was 72.64%. The average value of the absolute difference between 
      WED and the diameter of AAPM head phantom was 2.24+/-1.42 cm. Statistically 
      significant difference was found between the values of CTDIvol and SSDEaver 
      (P=0.000). The dispersion degree of the CTDIvol values was greater than that of 
      SSDEaver. Strong positive correlation was shown between CTDIvol and mAs 
      (P=0.000), as well as CTDIvol and WED (P=0.000). Strong positive correlation was 
      shown between SSDEaver and mAs (P=0.000), and moderate correlation for SSDEaver 
      and WED (P=0.000). Both the metrics of mAs and WED were included in the 
      multivariate linear stepwise regression equation to observe the effect of related 
      factors on the value of SSDEaver. CONCLUSIONS SSDEaver with better representative 
      can reproduce the radiation dosage of the specific adult patients in head CT 
      examination.
FAU - Xu, Jian
AU  - Xu J
AD  - Department of Radiology, Zhejiang Provincial People's Hospital, People's Hospital 
      of Hangzhou Medical College, Hangzhou, Zhejiang, China (mainland).
FAU - He, Xiaolong
AU  - He X
AD  - Department of Radiology, Quzhou People's Hospital, Quzhou, Zhejiang, China 
      (mainland).
FAU - Xiao, Huawei
AU  - Xiao H
AD  - Department of Radiology, Zhejiang Provincial People's Hospital, People's Hospital 
      of Hangzhou Medical College, Hangzhou, Zhejiang, China (mainland).
FAU - Xu, Jianguo
AU  - Xu J
AD  - Department of Radiology, Zhejiang Provincial People's Hospital, People's Hospital 
      of Hangzhou Medical College, Hangzhou, Zhejiang, China (mainland).
LA  - eng
PT  - Comparative Study
PT  - Journal Article
DEP - 20190103
PL  - United States
TA  - Med Sci Monit
JT  - Medical science monitor : international medical journal of experimental and 
      clinical research
JID - 9609063
SB  - IM
MH  - Adult
MH  - Cone-Beam Computed Tomography/*methods
MH  - Female
MH  - Head/*diagnostic imaging
MH  - Humans
MH  - Linear Models
MH  - Male
MH  - Phantoms, Imaging
MH  - Radiation Dosage
MH  - Retrospective Studies
MH  - Tomography, X-Ray Computed/*methods
PMC - PMC6327780
EDAT- 2019/01/04 06:00
MHDA- 2019/03/05 06:00
PMCR- 2019/01/03
CRDT- 2019/01/04 06:00
PHST- 2019/01/04 06:00 [entrez]
PHST- 2019/01/04 06:00 [pubmed]
PHST- 2019/03/05 06:00 [medline]
PHST- 2019/01/03 00:00 [pmc-release]
AID - 913927 [pii]
AID - 10.12659/MSM.913927 [doi]
PST - epublish
SO  - Med Sci Monit. 2019 Jan 3;25:71-76. doi: 10.12659/MSM.913927.