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1
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Radiation Exposure of Medical Staff in Interventional Radiology

100%
Kara Ü., Akkurt I.
Acta Physica Polonica A
|
2016
|
vol. 130
|
issue 1
404-406
EN
The aim of this study was to assess the radiation dose received by doctors, nurses, X-ray technician medical staff during cardiac catheterization in a representative sample of the staff in our angiography department. Radiation from X-ray machines can cause serious side effects. Radiation exposure of angiography staff (doctors, nurses, medical staff and X-ray technicians) has been recognized as a necessary hazard in angiography department. The purpose of our work is to determine angiography staff radiation doses during interventional radiology, to identify procedures associated with higher radiation doses, and to determine the effects of various parameters on staff doses. This study was performed at Suleyman Demirel University Medical Faculty Hospital. The procedure of study was performed in an interventional radiology department. We have recorded radiation doses data during all related imaging procedures performed as a part of department activity. The distances from the X-ray tube were 0 cm (doctor), 60 cm (nurse), 120 cm (medical staff) and 180 cm (X-ray technician). It is important to understand the radiation effects on medical staff in interventional radiology procedures. Determinants of radiation risk include not only radiation dose levels but also medical staff number, ages, gender and their position. These factors can increase or decrease the risk of exposure.
2
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Investigation of Radiation Absorption Properties of Some India Granites

100%
Mavi B., Akkurt I.
Acta Physica Polonica A
|
2015
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vol. 128
|
issue 2B
B-370-B-371
EN
The radiation shielding properties of India granites have been investigated. Gamma-ray attenuation coefficients of some India granites were determined for different energies, 662, 1173, and 1332 keV. The results were compared with the calculation of XCOM at the photon energy of 1-10 GeV. Good agreement between experimental and theoretical results has been observed.
3
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Cross Sections Calculation of (γ,N) Reactions for Some Elements

81%
Karpuz N., Boz M., Mavi B., Akkurt I.
Acta Physica Polonica A
|
2015
|
vol. 128
|
issue 2B
B-411-B-413
EN
Photonuclear processes can play an important role in the detection of nuclear materials. For this purpose, in this study, the (γ,n) and (γ,p) cross sections as functions of photon energy in medium weight nuclei were calculated. Calculations have been made of the cross sections for some of the (γ,n) and (γ,p) reactions in ^{28}Si, ^{32}S, ^{56}Fe and ^{63}Cu nuclei using the TALYS 1.6 nuclear code with incident photons of 7-40 MeV. These calculated cross sections are compared with each other and with the earlier experimental results from the literature (EXFOR). Calculated results (^{56}Fe(γ,n), ^{63}Cu(γ,n), ^{56}Fe(γ,p) and ^{63}Cu(γ,p) cross sections) are in very good agreement with the experimental data. However, because of the Coulomb barrier, the photoproton cross sections for ^{32}S, ^{56}Fe and ^{63}Cu target nuclei, are smaller than the photoneutron cross sections.
4
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Variation of Photoneutron Cross Section with Mass Number

81%
Karpuz N., Boz M., Mavi B., Akkurt I.
Acta Physica Polonica A
|
2015
|
vol. 128
|
issue 2B
B-409-B-410
EN
Photonuclear reactions play an important role in many different subfields of nuclear astrophysics, and fields, such as nucleosynthesis applications. The photonuclear reaction cross sections, especially the photoneutron reaction cross sections, are the fundamental properties of nuclear systems. In this study, theoretical evaluation of photoneutron reaction cross sections for 27 ≤ A ≤ 238 targets (^{27}Al, ^{96}Mo, ^{181}Ta, ^{238}U) have been investigated in the incident photon energy range of 7-35 MeV. Monte Carlo code TALYS 1.6 was used to calculate the photoneutron cross sections. The results are compared with the earlier experimental reports in literature and the cross section data in the TENDL-2013 nuclear reaction data library, based on subsequent versions of the TALYS nuclear code system. The photoneutron cross section results and the effects of the mass number of target nuclei are discussed.
5
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Investigation of Radiation Exposure Dose from Nuclear Medicine Procedures (Tc-99m MAG-3)

81%
Kara U., Yildiz M., Akkurt I.
Acta Physica Polonica A
|
2017
|
vol. 132
|
issue 3
883-885
EN
Nuclear medicine is great for viewing the roles of body organs. Medical imaging in nuclear medicine takes radioactive pharmaceuticals and studies their path of progress through patient's body. The principles of nuclear medicine are different from those of diagnostic radiology. The nuclear medicine can study the functioning of body and how it actually works. On the other hand, usage of different kinds of radiopharmaceuticals in nuclear medicine examinations can affect the dose rates. The purpose of our investigation was to estimate the effective dose from most common procedures, performed in nuclear medicine departments. We noted the injection radiation doses, which are used for diagnosis in nuclear medicine clinics. Later patient radiation doses were calculated, according to models recommended in ICRP 106.
6
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Radiation Dose in Dental Radiology

81%
Kara Ü., Yıldırım D., Akkurt I.
Acta Physica Polonica A
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2016
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vol. 130
|
issue 1
407-408
EN
The radiation is used in a wide range of medical fields, in diagnosis and treatment. Certain body parts, like thyroid, are more specifically affected by exposure to different types of radiation sources. The thyroid is highly susceptible to radiation carcinogenesis and exposure to ionising radiation is the only established cause of thyroid cancer. In this study, we have examined radiation doses measured during diagnosis which used dental panoramic radiography. The measurement has been performed in the Suleyman Demirel University, at PlanmecaProMax 3D (cone beam) imaging unit. The device operates at 66-70 kV, 8-10/22 mA/s.
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A Study on Radiation in Operating Room in Suleyman Demirel University

81%
Kara Ü., Kara Y., Akkurt I.
Acta Physica Polonica A
|
2016
|
vol. 130
|
issue 1
401-403
EN
Despite the use of ionizing radiation and most of the harmful effects commonly known but not shown, insufficient attention has been observed for radiation protection. Radiation-exposed patients, physicians, health care team and staff should receive training in this field. The aim of this study is the doses of radiation in the operating room to identify and inform health personnel in radiation protection. Radiation exposure to operating room staff (doctor, nurse, medical staff, X-ray technician, anaesthesia technician, etc.) has been recognized as a necessary hazard in operating room. The purpose of our work is to determine operating room staff radiation doses for operating room to identify procedures associated with higher radiation doses, and to determine the effects of various parameters on staff doses. This study was performed at Suleyman Demirel University Medical Faculty Hospital. The procedure of study was performed in department of anaesthesia. We recorded that radiation doses data include all related imaging performed as part of department procedure. The distances were 100, 150, 250 cm from X-ray tube. It is important to understand that radiation affects medical staff in operating procedures. Use of low doses of ionizing radiation does not have knowledge of the long-term results but we need to be careful to conclude that use of radiological protection. During radiation protection, the maximum dose, even under the thick, the minimum degree of exposure to radiation is an important factor for our health. In addition, in the study, Philips BV-25 Gold is used as a brand fluoroscopic device. Device, 1.2-2 kV, 60-100 mA/s of doses between the values.
8
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The Effect of Meteorological Parameters on Radon Concentration in Soil Gas

81%
Kulali F., Akkurt I., Özgür N.
Acta Physica Polonica A
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2017
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vol. 132
|
issue 3
999-1001
EN
The production of ²²²Rn depends on the activity concentrations of ²²⁶Ra in the earth's crust, in soil, rock and water. Radon concentration levels are strongly affected by atmospheric influences such as rainfall, real humidity, temperature and barometric pressure, rather than by chemical processes, as it is an inert gas. In particular the exhalation of radon is positively correlated with moisture content, temperature and negatively with pressure, so that these factors must be considered in the determination of exhalation rates in environmental measurements. In this study, radon concentrations in soil gas were continuously monitored for nine months in ten minutes periods, using AlphaGUARD system and the fluctuations of radon concentration were compared with the regional meteorologic data, using time graphs.
9
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Computed Tomography Routine Examinations and the Related Risk of Cancer

81%
Kara Ü., Tekın H., Akkurt I.
Acta Physica Polonica A
|
2016
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vol. 130
|
issue 1
409-411
EN
Computed tomography is an imaging process that uses x-ray equipment to create detailed scans, of areas inside the body. A picture created during computed tomography process shows the organs, bones, and other tissues in a thin "slice" of the body. Computed tomography is used in cancer diagnosis in many different ways to detect abnormal growths, helps to diagnose the presence of a tumor, provides information about the stage of cancer, determines exactly where to perform a biopsy procedure. The x-rays, gantry around the head, chest or another body part, helps to make a three-dimensional image that is much more detailed than pictures from other x-ray machines. Computed tomography imaging involves the use of x-rays, which are a form of ionizing radiation. Exposure to ionizing radiation is known to increase the risk of cancer. The aim of this study was to assess the radiation exposure received during computed tomography in a representative sample of patients.
10
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Photoneutron Dose Measurement in Radiotherapy Room

81%
Kara Ü., Mesbahi A., Akkurt I.
Acta Physica Polonica A
|
2015
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vol. 128
|
issue 2B
B-372-B-374
EN
Cancer is one of the main disease to threat for human health. Besides surgery and medical treatment (chemotherapy), radiotherapy is commonly used treatment method to kill cancer cell. For this method high energy photon is required. Clinic Lineer Accelerator (cLINAC) relatively lower energy than other LINAC has been used to obtain photon via bremsstrahlung processes. When accelerated electron beam impinges to the thin target bremsstrahlung occurs and photon can be created. Those photons can be focused on cancer cell and kill cancer. In order to focus photon beam collimator materials in LINAC head generally contains heavy elements is used and the interaction of bremsstrahlung photon with the such heavy nuclei the neutron can be produced inside the treatment rooms. The threshold of the neutron production for those materals is about 10 MeV. As the neutron is more dangerous than photon it is important to determine neutron dose during radiotherapy treatment. In this study neutron dose rate has been measured and simulated in radiotherapy room.
11
Content available remote

Determination of Gamma-ray Attenuation Coefficients at Different Energies in Amasya Marbles

81%
Mavi B., Oner F., Akkurt I.
|
EN
The linear attenuation coefficients of different marble samples (Perlato Beige, Regal Beige and Crema Siva Beige) produced in Amasya were measured. The measurements have been performed at the photon energies of 511, 835 and 1274 keV which were obtained using ^{22}Na and ^{54}Mn sources. The measurements have been performed using a gamma spectrometer which contains 3"×3" NaI(Tl) detector connected to 16384 channel Multi-Channel-Analyser (MCA).
12
Content available remote

Monte Carlo Simulation of Photoneutron Dose in Radiotherapy Room as A Function of Gantry Angles

81%
Kara Ü., Mesbahi A., Akkurt I.
|
EN
Using bremsstrahlung photon is one of the principal means to treat cancer. Bremsstrahlung photons are created in medical LINAC and the interaction of bremsstrahlung photon with the heavy nuclei that constitute the linac head shielding is the main process of neutron production inside the treatment rooms. The threshold of the neutron production for those materals is about 10 MeV. As the neutron is more dangerous than photon it is important to determine neutron dose during radiotherapy treatment. The neutron distribution depends on some parameters such as gantry angle. In this study neutron dose rate has been simulated as a function of gantry angle.
13
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Investigation of the Radon Levels in Groundwater and Thermal Springs of Pamukkale Region

81%
Kulalı F., Akkurt I., Özgür N.
|
EN
Radon, which is the largest source of natural ionizing radiation, reaches surface as gas form or solvated in the ground water. Emanation of radon can has a profile which is disposed to increase or decrease depending on the effects of meteorological events or crust movements. Pamukkale, which was involved previously in the world heritage list of UNESCO, and the surrounding area have many groundwater and thermal springs that carry dissolved radon to surface. The aim of this study was to investigate the variations of radon in the water samples of the region.
14
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Determination of Radiation Shielding Properties of Cotton Polyester Blend Fabric Coated with Different Barite Rate

81%
Kilincarslan S., Akkurt I., Uncu I., Akarslan F.
|
EN
Using radiation in industry and medicine brings its hazardous effects. On account of this, people have started to be exposed to extra radiation. Thus radiation protection is developed in parallel with the utilization of radiation. In order to be protected from radiation three different criteria have to be taken into account, these are time, distance and the shielding. Shielding is the most effective way. An effective shield should cause a large energy loss on a small distance without emission of more hazardous radiation. In the world, more than three-hundred nuclear facilities have been used to fulfill the needs in the fields of scientific research, energy, agriculture and industry. In addition to this in medical centres radiation beams have been used for treatment and diagnosis. It is extremely important to protect the human body from radioactive rays. Barite is a mineral which can be used for shielding because of barium, which is a high atomic number element. The shielding property of barite is utilized in fabrics. Barite coated fabrics having characteristics of retaining radiation was obtained by penetrating barite into the fabrics via coating method. The linear attenuation coefficients (μ) of the coated barite fabrics were measured at the photon energies of 662, 1173 and 1332 keV obtained from ^{137}Cs and ^{60}Co γ-ray sources, respectively. As detailed elsewhere, the measurement has been performed using the gamma spectrometer that contains NaI(Tl) connected to 16k channels multi-channel-analyser. In this study, cotton polyester blend fabric was used. To apply barite mineral to fabric via coating method, it was grinded to a size of 2-10 microns by using jaw crushers. FK 800/N type transparent compound was used as adhesive. The coated fabrics were prepared with different volumes of barite. For this purposes four different types of fabrics have been produced, where the rate of barite was 0%, 40%, 50% and 60%. The results of experiments show that barite coated fabrics have blocked radiation. When barite ratio increases, the amount of absorbed radiation also increases.
15
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Photon Attenuation Coefficients of Iron Doped Clay at 662~keV

71%
Akkurt I., Mavi B., Gunoglu K., Akyıldırım H., Canakci H.
Acta Physica Polonica A
|
2013
|
vol. 123
|
issue 2
343-344
EN
After discovery of the radioactivity by Becquerel, radiation started to be used in large fields and it became part of our life nowadays. Using radiation from industry to medicine brings its hazardous effect and radiation protection developed in physics in parallel with the utilization of radiation. Although time, distance and shielding are the main rules to be protected from radiation, shielding is most effective way. In this case development of shielding materials becomes important. Clay is an interesting material and besides using it for different purposes it can be used as plaster material in building construction. In this study iron doped into clay samples and radiation shielding properties has been measured at 662 keV gamma rays. The measurements have been performed using gamma spectrometer system which contains NaI(Tl) and 16k multichannel analyser.
16
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The Effect of Pumice Rate on the Gamma Absorption Parameters of Concrete

71%
Akkurt I., Akyildirim H., Mavı B., Kilinçarslan Ş., Başyığıt C.
Acta Physica Polonica A
|
2012
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vol. 121
|
issue 1
144-146
EN
Since the technology concerning gamma radiation showed a rapid development, it became a necessity to be protected from it. One of the common shielding materials for this purpose is concrete. This study aims to give the effect of pumice rate on the gamma radiation attenuation coefficients of normal concrete (ρ = 2.476 g cm^{-3}) containing different rates of pumice mineral. Pumice, for which the Gölcük region in Isparta province is rich, is a volcanic originated spongy and porous mineral. Although it is a light material, it has a high comprehensive strength and heat resistance. So it became a common construction material in buildings. In the study, the variation of attenuation coefficients for concretes of different pumice rates were measured for 662, 1173 and 1332 keV photons using a NaI(Tl) detector. The experimental values were compared with the theoretical ones obtained by XCOM code.
17
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Radiation Shielding Properties of Shotcrete

71%
Gunoglu K., Akkurt I., Basyigit C., Çakıroğlu M., Akkaş A.
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|
vol. 125
|
issue 2
299-300
EN
Shotcrete is a concrete spraying of concrete or mortar that may be accomplished through either a dry- or wet-mix process. It is made of normal weight aggregates which have a density of approximately 2323 kg/m^3. For the most part, shotcrete is used in underground excavations in rock and repair work in constructions. In this study, linear attenuation coefficient (μ, cm^{-1}) was measured for shotcrete produced with dry mix process. Measurements were carried out by gamma spectrometry containing NaI(Tl) detector and multichannel analyzer.
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