PMID- 34458192
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20240403
IS  - 2251-7200 (Print)
IS  - 2251-7200 (Electronic)
IS  - 2251-7200 (Linking)
VI  - 11
IP  - 4
DP  - 2021 Aug
TI  - Determination of Diagnostic Reference Level (DRL) in Common Computed Tomography 
      Examinations with the Modified Quality Control-Based Dose Survey Method in Four 
      University Centers: A Comparison of Methods.
PG  - 447-458
LID - 10.31661/jbpe.v0i0.2105-1322 [doi]
AB  - BACKGROUND: The diagnostic reference level (DRL) is measured with different 
      methods in the common Computed tomography (CT) exams, but it has not been 
      measured through the size-specific dose estimate (SSDE) method in Iran, yet. 
      OBJECTIVE: This study aimed to calculate the local DRL (LDRL) using the new 
      quality control-based dose survey method (QC) and patients' effective diameter 
      (MQC) and compare them with a data collection method (DC) as well as local 
      national DRLs (NDRL). MATERIAL AND METHODS: In this cross-sectional study, LDRL, 
      based on the third quartile of volumetric computed tomography dose index 
      (CTDI(vol)) and dose length product (DLP) values, was calculated for the four 
      common CT examinations in four CT scan centers affiliated with Shiraz University 
      of Medical Sciences by DC, QC and MQC methods. The CTDI(vol) of each patient for 
      each CT exam calculated with three methods was compared with paired t-test. Also, 
      the LDRL using MQC method was compared with other national DRL studies. RESULTS: 
      There was a significant difference between the CTDI(vol) values calculated with 
      MQC and QC in all four examinations (P <0.001). The LDRL based on CTDI(vol) 
      obtained by the MQC method for head, sinus, chest, abdomen, and pelvis were (50, 
      18, 15, 19) mGy, respectively, and the calculated DLP values were also (735, 232, 
      519, 984) mGy.cm. CONCLUSION: In MQC, LDRL based on CTDI(vol) was calculated with 
      a mean difference percentage of (19.2 +/- 11.6)% and (27.1 +/- 8.1)% as compared to 
      the QC and DC methods, respectively. This difference resulted from the use of the 
      SSDE method and dose accuracy in the QC dose survey.
CI  - Copyright: (c) Journal of Biomedical Physics and Engineering.
FAU - Tabesh, Jalal
AU  - Tabesh J
AD  - MSc, Department of Radiology, School of Paramedical Sciences, Shiraz University 
      of Medical Sciences, Shiraz, Iran.
FAU - Mahdavi, Maziyar
AU  - Mahdavi M
AD  - PhD, Department of Radiology, School of Paramedical Sciences, Shiraz University 
      of Medical Sciences, Shiraz, Iran.
AD  - PhD, Ionizing and Non-Ionizing Radiation Protection Research Center (INIRPRC), 
      School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, 
      Iran.
FAU - Haddadi, Gholamhasan
AU  - Haddadi G
AD  - PhD, Department of Radiology, School of Paramedical Sciences, Shiraz University 
      of Medical Sciences, Shiraz, Iran.
AD  - PhD, Ionizing and Non-Ionizing Radiation Protection Research Center (INIRPRC), 
      School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, 
      Iran.
FAU - Ravanfar Haghighi, Rezvan
AU  - Ravanfar Haghighi R
AD  - PhD, Medical Imaging Research Center, Shiraz University of Medical Sciences, 
      Shiraz, Iran.
FAU - Jalli, Reza
AU  - Jalli R
AD  - MD, Medical Imaging Research Center, Shiraz University of Medical Sciences, 
      Shiraz, Iran.
LA  - eng
PT  - Journal Article
DEP - 20210801
PL  - Iran
TA  - J Biomed Phys Eng
JT  - Journal of biomedical physics & engineering
JID - 101589641
PMC - PMC8385214
OTO - NOTNLM
OT  - Body Mass Index
OT  - Diagnostic Reference Levels
OT  - Multidetector Computed Tomography
OT  - Quality Control-Based Dose Survey Method
OT  - Size-Specific Dose Estimate
EDAT- 2021/08/31 06:00
MHDA- 2021/08/31 06:01
PMCR- 2021/08/01
CRDT- 2021/08/30 06:00
PHST- 2021/05/01 00:00 [received]
PHST- 2021/06/20 00:00 [accepted]
PHST- 2021/08/30 06:00 [entrez]
PHST- 2021/08/31 06:00 [pubmed]
PHST- 2021/08/31 06:01 [medline]
PHST- 2021/08/01 00:00 [pmc-release]
AID - JBPE-11-4 [pii]
AID - 10.31661/jbpe.v0i0.2105-1322 [doi]
PST - epublish
SO  - J Biomed Phys Eng. 2021 Aug 1;11(4):447-458. doi: 10.31661/jbpe.v0i0.2105-1322. 
      eCollection 2021 Aug.