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OPTIMIZATION OF LUNG CT PROTOCOL FOR THE DIAGNOSTIC EVALUATION OF COVID-19 LUNG DISEASE.
Hosseini Nasab, Seyed Mohammad Bagher; Deevband, Mohammad Reza; Rahimi, Roghaye; Nasiri, Saeed; Ahangaran, Mohammad Reza; Morshedi, Mina.
  • Hosseini Nasab SMB; Radiology Department, Taleghani Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
  • Deevband MR; Department of Medical Physics and Biomedical engineering, Faculty of Medicine, Shahid Beheshti University of Medical Sciences and Health Services, Tehran, Iran.
  • Rahimi R; Radiology Department, Loghman Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
  • Nasiri S; Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
  • Ahangaran MR; Radiology Department, Nikan Hospital, Tehran, Iran.
  • Morshedi M; Radiology Department, Taleghani Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Radiat Prot Dosimetry ; 196(1-2): 120-127, 2021 Nov 03.
Article in English | MEDLINE | ID: covidwho-1437844
ABSTRACT
This study intends to evaluate the different lung CT scan protocols used for the diagnostic evaluation of COVID-19-induced lung disease in Iranian imaging centers in terms of radiation dose and image quality. After data collecting, subjective image quality, radiation dose and objective image quality such as noise, SNR and CNR were assessed. Statistically significant differences in effective dose and image quality were evident among different lung CT protocols. Lowest and highest effective dose was1.31 ± 0.53 mSv related to a protocol with activated AEC (reference mAs = 20) and 6.15 ± 0.57 mSv related to a protocol with Fixed mAs (mAs = 100), respectively. A protocol with enabled tube current modulation with 70 mAs as a reference mAs, and protocol with 20 mAs and enabled AEC had the best and lowest image quality, respectively. To optimize the scan parameters, AEC must be used, and a range of tube currents (between 20 and 50 mAs) can produce acceptable images in terms of diagnostic quality and radiation dose for the diagnosis of COVID-19-induced lung disease.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: COVID-19 / Lung Diseases Type of study: Experimental Studies Limits: Humans Country/Region as subject: Asia Language: English Journal: Radiat Prot Dosimetry Year: 2021 Document Type: Article Affiliation country: Rpd

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Full text: Available Collection: International databases Database: MEDLINE Main subject: COVID-19 / Lung Diseases Type of study: Experimental Studies Limits: Humans Country/Region as subject: Asia Language: English Journal: Radiat Prot Dosimetry Year: 2021 Document Type: Article Affiliation country: Rpd