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Tabesh, Jalal, Mahdavi, Maziyar, Hadadi, Gholamhasan, Ravanfar Haghighi, Rezvan, Jalli, Reza. (1400). 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. سامانه مدیریت نشریات علمی, 11(4), 447-458. doi: 10.31661/jbpe.v0i0.2105-1322
Jalal Tabesh; Maziyar Mahdavi; Gholamhasan Hadadi; Rezvan Ravanfar Haghighi; Reza Jalli. "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". سامانه مدیریت نشریات علمی, 11, 4, 1400, 447-458. doi: 10.31661/jbpe.v0i0.2105-1322
Tabesh, Jalal, Mahdavi, Maziyar, Hadadi, Gholamhasan, Ravanfar Haghighi, Rezvan, Jalli, Reza. (1400). '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', سامانه مدیریت نشریات علمی, 11(4), pp. 447-458. doi: 10.31661/jbpe.v0i0.2105-1322
Tabesh, Jalal, Mahdavi, Maziyar, Hadadi, Gholamhasan, Ravanfar Haghighi, Rezvan, Jalli, Reza. 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. سامانه مدیریت نشریات علمی, 1400; 11(4): 447-458. doi: 10.31661/jbpe.v0i0.2105-1322

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

Journal of Biomedical Physics and Engineering
مقاله 5، دوره 11، شماره 4، مهر و آبان 2021، صفحه 447-458    اصل مقاله (1.09 M)
نوع مقاله: Original Research
شناسه دیجیتال (DOI): 10.31661/jbpe.v0i0.2105-1322
نویسندگان
Jalal Tabesh1؛ Maziyar Mahdavi* 2، 3؛ Gholamhasan Hadadi2، 3؛ Rezvan Ravanfar Haghighi4؛ Reza Jalli5
1MSc, Department of Radiology, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
2PhD, Department of Radiology, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
3PhD, Ionizing and Non-Ionizing Radiation Protection Research Center (INIRPRC), School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
4PhD, Medical Imaging Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
5MD, Medical Imaging Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
چکیده
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 (CTDIvol) 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 CTDIvol 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 CTDIvol values calculated with MQC and QC in all four examinations (P <0.001). The LDRL based on CTDIvol 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 CTDIvol 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.
کلیدواژه‌ها
Diagnostic Reference Levels؛ Multidetector Computed Tomography؛ Quality Control-Based Dose Survey Method؛ Size-Specific Dose Estimate؛ Body Mass Index
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