Radiation Protection Dosimetry
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#1Sahar Heidari (IAU: Islamic Azad University)H-Index: 1
#2Soheila Abdi (IAU: Islamic Azad University)H-Index: 5
Last. Shohreh Zare Karizi (IAU: Islamic Azad University)H-Index: 7
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In this research, changes in the expression of B-cell lymphoma 2 (BCL2), miR-15-b and miR-16 in human adenocarcinoma gastric cancer cell line (AGS) following the exposure to magnetic flux densities (MFDs) of 0.2 and 2 mT continuously and discontinuously (1.5 h on/1.5 h off) for 18 h were investigated. Changes in the cell viability were evaluated by the MTT assay. Real-time PCR was used to evaluate the expression changes of BCL2, miR-15-b and miR-16. The results showed that extremely low frequenc...
#1Tony Svahn (Uppsala University)H-Index: 13
#2Tommy Sjöberg (Uppsala University)H-Index: 2
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The purpose of the present work was to evaluate performance in pulmonary nodule detection, reading times and patient doses for ultra-low dose computed tomography (ULD-CT), standard dose chest CT (SD-CT), and digital radiography (DR). Pulmonary nodules were simulated in an anthropomorphic lung phantom. Thirty cases, 18 with lesions (45 total lesions of 3-12 mm) and 12 without lesions were acquired for each imaging modality. Three radiologists interpreted the cases in a free-response study. Perfor...
#1Bhupender Singh (Bose Corporation)H-Index: 3
#2K. KantH-Index: 9
Last. Maneesha Garg (Bose Corporation)H-Index: 2
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Scintillation-detector-based SMART RnDuo (AQTEK System, India) and LED fluorimeter (Quantalase Instrument, India) were used for measurements of radon and uranium concentration in 54 groundwater samples collected from different locations in the Palwal district of Haryana (India). Radon in 26% and uranium in 54% of samples were found to be at higher levels than the maximum contamination limit (11 Bq l-1) for drinking water recommended by US Environmental Protection Agency and provisional guideline...
#1Nasser Shubayr (JazanU: Jazan University)H-Index: 2
#2Yazeed Alashban (KSU: King Saud University)H-Index: 2
Last. M Almurayshid (KACST: King Abdulaziz City for Science and Technology)
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Workers in the mining industry face the problem of radiation exposure from naturally occurring radioactive materials. Thus, this study aimed to estimate a Hp (10) doses for mine workers in the phosphate mining industry in Saudi Arabia. The personal dose equivalent [Hp (10)] of 606 mine workers in the phosphate mining industry in Saudi Arabia were obtained from 2016 to 2019 using thermoluminescent dosemeters (TLDs). The results showed that the annual mean Hp (10) of all mine workers averaged over...
#1Denise BosH-Index: 1
#2Sebastian ZensenH-Index: 1
Last. Axel WetterH-Index: 24
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The purpose of this study is to examine radiation doses and image quality of a low-dose (LD) protocol for chest and abdomen/pelvis (CAP) CT compared with a standard (STD) protocol. A total of 361 patients were included between October 2019 and April 2020; 104 patients with LD-protocol (100 kV, ref mAs 80 (chest)/145 (abdomen/pelvis)) and 257 patients with STD-protocol (100 kV, ref mAs 100 (chest)/180 (abdomen/pelvis)) at second-generation dual-source CT. Radiation doses for CTDIvol and DLP, and ...
#1Tomonori Hokama (JAEA: Japan Atomic Energy Agency)H-Index: 2
#2Hiroki Fujita (JAEA: Japan Atomic Energy Agency)H-Index: 6
Last. Takeshi Iimoto (UTokyo: University of Tokyo)H-Index: 9
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During the early phase of a nuclear accident, major radioactive materials are released into the environment, necessitating the prompt deployment of various protective actions to avoid or reduce radiation exposure. To implement these actions, the levels of radioactivity in the environment should be determined. However, the radioactivity concentrations of artificial alpha-particle-emitting radionuclides such as plutonium are difficult to measure in airborne samples, because they are interfered wit...
#1Tatsuhiro Gotanda (Kawasaki University of Medical Welfare)H-Index: 4
#2Toshizo KatsudaH-Index: 6
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This study developed a phantom with a shape similar to that of the breast and use GAFCHROMIC films that can be placed inside the phantom to measure the detailed breast dose distribution in mammography. GAFCHROMIC EBT3 was placed on the block cube breast phantom and irradiated with a mammography device to measure the absorbed dose distribution inside the phantom in the horizontal and depth directions. The dose distribution in the horizontal plane was the highest in the centre on the chest wall si...
#1Winda Kusuma Dewi (UNDIP: Diponegoro University)H-Index: 1
#2Choirul Anam (UNDIP: Diponegoro University)H-Index: 10
Last. Geoff Dougherty (California State University, Channel Islands)H-Index: 13
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The study aims to correlate the effective diameter (Deff) and water-equivalent diameter (Dw) parameters with anterior-posterior (AP), lateral (LAT) and AP + LAT dimensions in order to estimate the patient dose in head CT examinations. Seventy-four patient datasets from head CT examinations were retrospectively collected. The patient's sizes were calculated from the middle slice using a software of IndoseCT. Dw and Deff were plotted as functions of AP, LAT and AP + LAT dimensions. The best trendl...
#1Seán Cournane (UCD: University College Dublin)H-Index: 9
#2Matthew Reade (National University of Ireland, Galway)
Last. Julie LuceyH-Index: 1
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Automatic Exposure Control (AEC) systems optimise radiation dose to the patient while providing adequate image quality. This study examined the effect that the increased localiser region of interest of a hybrid PET/CT has on the CTDIvol, focussing on the role of extraneous objects and patient attenuation profiles. A Siemens Biograph™ 16 Horizon PET/CT system and a Siemens Somatom Sensation 64, both employing the Siemens CAREDose 4D AEC system, were used for acquisition of a range of phantoms. Th...
#1Mohamed Y. Hanfi (UrFU: Ural Federal University)H-Index: 8
#2Ilia V. YarmoshenkoH-Index: 13
Last. Michael ZhukovskyH-Index: 15
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The 238U, 232Th and 40K concentrations were estimated in the size-fractionated urban surface deposited sediments in Ekaterinburg, Russia. The average concentrations of 238U, 232Th and 40K in dust fraction (0.002-0.05 mm) are 48 ± 7, 28 ± 1 and 510 ± 20 Bq/kg, respectively. The effective dose is estimated depending on the suggested daily scenarios of different exercises which can be assigned to light, moderate and vigorous activity. The results show that the total effective dose received during 2...
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