Tehran University Medical Journal
مجله دانشکده پزشکی، دانشگاه علوم پزشکی تهران
Tehran Univ Med J
Medical Sciences
http://tumj.tums.ac.ir
1
admin
1683-1764
1735-7322
10.18869/acadpub.tumj
000
000
000
fa
jalali
1403
5
1
gregorian
2024
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1
82
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online
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other
تعیین سطوح مرجع تشخیصی (DRL) تصویربرداری سیتیاسکن در
بیمارستانهای شهر ساوه: یک گزارش کوتاه
Determining the diagnostic reference levels (DRL) of CT scan imaging in Saveh Hospitals: a brief report
گزارش كوتاه
Brief Report
<span style="font-family:yekanYW;"><span style="font-size:12pt"><span style="line-height:102%"><span style="direction:rtl"><span style="unicode-bidi:embed"><b><i><span lang="FA" style="font-size:10.0pt"><span style="line-height:102%">زمینه و هدف:</span></span></i></b><span lang="FA" style="font-size:10.0pt"><span style="line-height:102%"> باتوجه به دستورالعمل حفاظت پرتویی، تعیین سطوح مرجع تشخیصی </span></span><span dir="LTR" style="font-size:8.0pt"><span style="line-height:102%">(DRL)</span></span><span style="font-size:10.0pt"><span style="line-height:102%"> در تصویربرداری سیتیاسکن امری ضروری میباشد. این مطالعه به تعیین </span></span><span dir="LTR" style="font-size:8.0pt"><span style="line-height:102%">DRL</span></span><span lang="FA" style="font-size:10.0pt"><span style="line-height:102%"> در بیمارستانهای شهر ساوه پرداخته است.</span></span></span></span></span></span><br>
<span style="font-size:12pt"><span style="line-height:102%"><span style="direction:rtl"><span style="unicode-bidi:embed"><b><i><span lang="FA" style="font-size:10.0pt"><span style="line-height:102%"><span style="letter-spacing:-.1pt">روش بررسی:</span></span></span></i></b> <span lang="AR-SA" style="font-size:10.0pt"><span style="line-height:102%"><span style="letter-spacing:-.1pt">این مطالعه با دو روش مبتنی بر نتایج و محاسبات حاصل از گزارشات سالیانه کنترل کیفی </span></span></span><span dir="LTR" style="font-size:8.0pt"><span style="line-height:102%"><span style="letter-spacing:-.1pt">(QC)</span></span></span><span lang="AR-SA" style="font-size:10.0pt"><span style="line-height:102%"><span style="letter-spacing:-.1pt"> و روش جمعآوری دادههای مربوط به اسکن بیماران </span></span></span><span dir="LTR" style="font-size:8.0pt"><span style="line-height:102%"><span style="letter-spacing:-.1pt">(DC)</span></span></span><span lang="AR-SA" style="font-size:10.0pt"><span style="line-height:102%"><span style="letter-spacing:-.1pt"> در بهمن و اسفند ماه سال 1401 انجام شد. در این مطالعه چارک دوم مقادیر شاخصهای دوز حجمی </span></span></span><span dir="LTR" style="font-size:8.0pt"><span style="line-height:102%"><span style="letter-spacing:-.1pt">(CTDI<sub>vol</sub>)</span></span></span><span lang="AR-SA" style="font-size:10.0pt"><span style="line-height:102%"><span style="letter-spacing:-.1pt"> و دوز تولیدشده در طول اسکن </span></span></span><span dir="LTR" style="font-size:8.0pt"><span style="line-height:102%"><span style="letter-spacing:-.1pt">(DLP)</span></span></span><span lang="AR-SA" style="font-size:10.0pt"><span style="line-height:102%"><span style="letter-spacing:-.1pt"> بهعنوان </span></span></span><span dir="LTR" style="font-size:8.0pt"><span style="line-height:102%"><span style="letter-spacing:-.1pt">DRL</span></span></span><span lang="AR-SA" style="font-size:10.0pt"><span style="line-height:102%"><span style="letter-spacing:-.1pt"> در نظر گرفته شد.</span></span></span></span></span></span></span><br>
<span style="font-size:12pt"><span style="line-height:102%"><span style="direction:rtl"><span style="unicode-bidi:embed"><b><i><span lang="FA" style="font-size:10.0pt"><span style="line-height:102%">یافتهها:</span></span></i></b> <span lang="AR-SA" style="font-size:10.0pt"><span style="line-height:102%">مقدار </span></span><span dir="LTR" style="font-size:8.0pt"><span style="line-height:102%">DRL</span></span><span lang="AR-SA" style="font-size:10.0pt"><span style="line-height:102%"> شاخص </span></span><span dir="LTR" style="font-size:8.0pt"><span style="line-height:102%">CTDI<sub>vol</sub></span></span><span lang="AR-SA" style="font-size:10.0pt"><span style="line-height:102%"> در دو روش </span></span><span dir="LTR" style="font-size:8.0pt"><span style="line-height:102%">QC</span></span><span lang="AR-SA" style="font-size:10.0pt"><span style="line-height:102%"> و </span></span><span dir="LTR" style="font-size:8.0pt"><span style="line-height:102%">DC</span></span><span lang="AR-SA" style="font-size:10.0pt"><span style="line-height:102%"> برای تصویربرداریهای سر (76/32و 36/32)، سینوس (73/11 و 89/9)، قفسهسینه (06/6 و 11/5) و شکم/لگن (86/11 و 56/10) بهدست آمد.</span></span></span></span></span></span><br>
<span style="font-size:12pt"><span style="line-height:102%"><span style="direction:rtl"><span style="unicode-bidi:embed"><b><i><span lang="FA" style="font-size:10.0pt"><span style="line-height:102%">نتیجهگیری:</span></span></i></b> <span lang="AR-SA" style="font-size:10.0pt"><span style="line-height:102%">باتوجه به اختلاف قابلتوجه مقادیر </span></span><span dir="LTR" style="font-size:8.0pt"><span style="line-height:102%">DRL</span></span><span lang="AR-SA" style="font-size:10.0pt"><span style="line-height:102%"> شاخصهای دوز مراکز با مقادیر سایر مطالعات، لزوم توجه به تعیین </span></span><span dir="LTR" style="font-size:8.0pt"><span style="line-height:102%">DRL</span></span><span lang="AR-SA" style="font-size:10.0pt"><span style="line-height:102%"> در هر یک از مراکز تصویربرداری کاملا ضروری است.</span></span></span></span></span></span></span><br>
<div><span style="font-size:12pt"><span style="line-height:130%"><span new="" roman="" style="font-family:" times=""><b><i><span style="font-size:10.0pt"><span style="line-height:130%">Background:</span></span></i></b> <span lang="EN" style="font-size:10.0pt"><span style="line-height:130%">Based on the recommendation of the European Committee and ICRP, DRL values should be determined at the local, national and regional levels for CTDI<sub>vol</sub> (Computed Tomography Dose Index <sub>volume</sub>) and DLP (Dose Length Product) dose indicators.</span></span><span style="font-size:10.0pt"><span style="line-height:130%"> According to the radiation protection guidelines, it is essential study has determined DRL in Saveh hospitals</span></span><span style="font-size:10.0pt"><span style="line-height:130%"></span></span></span></span></span><br>
<span style="font-size:12pt"><span style="line-height:130%"><span new="" roman="" style="font-family:" times=""><b><i><span style="font-size:10.0pt"><span style="line-height:130%">Methods:</span></span></i></b> <span style="font-size:10.0pt"><span style="line-height:130%">This study was conducted with two methods based on the results and calculations obtained from the annual Quality Control (QC) reports and the Data Collection (DC) method related to patient scans. In this study, by referring to the annual reports of each device and using radiation components during dosimetry and determining CTDI<sub>air</sub> or CTDI<sub>w</sub>, the correction factor was obtained. Using this factor and existing equations, DLP and CTDI<sub>vol</sub> were calculated based on quality control standards. The second quartile or the median was determined as DRL for head, sinus, chest and abdomen/pelvis imaging protocols and its values were compared with each other and other studies. This study was conducted in February and March 2023 in three hospitals in Saveh city.</span></span><br>
<b><i><span style="font-size:10.0pt"><span style="line-height:130%">Results:</span></span></i></b><span style="font-size:10.0pt"><span style="line-height:130%"> The diagnostic reference levels of CTDI<sub>vol</sub> index were obtained in both QC and DC methods for head (32.76 and 32.36), sinus (11.73 and 9.89), chest (6.06 and 5.11) and abdomen/pelvis (11.86 and 10.56) imaging. The highest DRL values of DLP index in both QC and DC methods are for head, abdomen/pelvis, chest and sinus CT scans, respectively. In the QC method, these values were (603.99), (478.15), (187.15), and (132.65) respectively, and in the DC method, the values were (601.84), (427.76), (219.01), and (114.81) mG.cm.</span></span></span></span></span><br>
<span style="font-size:12pt"><span style="line-height:130%"><span new="" roman="" style="font-family:" times=""><b><i><span style="font-size:10.0pt"><span style="line-height:130%">Conclusion:</span></span></i></b><span style="font-size:10.0pt"><span style="line-height:130%"> According to the results of this study and the lack of significant difference between the DRL values of CTDI<sub>vol</sub> and DLP indicators in both QC and DC methods, it is recommended that the centers, if they have the acceptance criteria for annual quality control, can determine the DRL by referring to the device console information from the DC method.</span></span></span></span></span></div>
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شاخص دوز حجمی, سیتیاسکن, سطوح مرجع تشخیصی, ساوه.
CTDIvol, CT scan, diagnostic reference levels, Saveh.
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430
http://tumj.tums.ac.ir/browse.php?a_code=A-10-3666-821&slc_lang=other&sid=1
Mohamad
Sarkheil
محمد
سرخیل