en Radiation Biology Radiation Biology گزارش کوتاه Short Report <div style="text-align: justify;"><span style="font-size:10pt"><span style="text-justify:newspaper"><span style="text-kashida-space:50%"><span style="line-height:119%"><span style="font-family:Calibri"><span style="color:black"><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Background</span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-weight:bold"><span style="language:en-US">:</span></span></span></span></span> <span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">Evaluation of X-ray exposure biological effects in neonates are more important due to high radiosensitivity. This study aimed to evaluate the radiation doses of neonates undergoing x- ray radiography using portal machine in intensive care units (NICUs). </span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Materials and Methods:</span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US"> We analyzed dose area product (DAP) values among 105 neonates with a gestational age less than 37 weeks admitted at our hospitals between 2021 and 2022. The number of radiographs was 154. DAP values were measured by DAP meter and compared in three category of weight (extremely low weight, low weight and normal weight) in two commonly radiographies (chest and abdomen). </span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Results: </span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">DAP values ranged from 3.21 &plusmn; 0.1 to 5.65 &plusmn; 2.11 mGy.cm</span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="language:en-US">²</span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US"> and from 2.11 &plusmn; 1.98 to 4.38 &plusmn; 0.75 mGy.cm2 for patient weight from 920 to 2200 gr in chest and abdomen radiography respectively. These values were higher than the international criteria, standards in some cases. High significantly correlation was shown between technical settings of radiography (KV, CTP, field size) and DAP (P < 0.05 for all). </span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Conclusions: </span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">It is recommended to use the proper collimation, kilovoltage and current time product during radiography of premature neonates to optimize patient protection.</span></span></span></span></span></span></span></span></span></div> Dose area product, pediatrics, diagnostic radiology. 1091 1094 http://ijrr.com/browse.php?a_code=A-10-1-1281&slc_lang=en&sid=1 S. Pandesh 7900319475328460028898 7900319475328460028898 No Department of Radiology Technology, School of Allied Medical Sciences, Birjand University of Medical Sciences, Birjand, Iran M. Jabbari masoudjabari@yahoo.com 7900319475328460028899 7900319475328460028899 Yes Department of Radiology Technology, School of Allied Medical Sciences, Birjand University of Medical Sciences, Birjand, Iran H. Zarghani 7900319475328460028900 7900319475328460028900 No Department of Radiology Technology, School of Allied Medical Sciences, Birjand University of Medical Sciences, Birjand, Iran