New methods of dosimetry in computed tomography (CT) X-ray fields require the use of high-resolution detectors instead of pencil-type ionization chambers typically used for CT dose index (CTDI) measurements. This paper presents a study on the suitability of a wide range of ionization chambers, diodes, and a two-dimensional detector array, used primarily in radiation therapy, for CT and cone-bea...

This work studied protective material consisting of several metal oxide composites (Pb3O4, WO3, SnO2, and Bi2O3)-natural rubber (NR) for X-ray gamma-ray shielding. The were prepared through open milling vulcanization processes further characterized by scanning electron microscope (SEM), diffraction (XRD), rheometry analysis, density gauge. attenuation coefficient the sample was investigated usi...

BACKGROUND Visceral leishmaniasis (VL) has strong links with poverty, substantial medical and veterinary impacts. This review aimed to focus in studies published during 1994-2016 on VL in southeastern Iran. METHODS The present review is based on expert knowledge and historical studies published during the past 23 yr (1994-2016) on VL in southeastern Iran. In addition, related literature found...

A kDNA PCR enzyme-linked immunosorbent assay (kDNA PCR-ELISA) for the diagnosis of human visceral leishmaniasis (HVL) was developed. The detection limit of the reaction, precision measurements, and cut-off of the kDNA PCR-ELISA were defined in a proof-of-concept phase. A reference strain of Leishmania (Leishmania) infantum and a bank of 14 peripheral blood samples from immunocompetent patients ...

This paper presents investigations of thimble ionization chamber response in medium-energy kilovoltage x-ray beams (70-280 kVp, 0.09-3.40 mm Cu HVL). Two thimble ionization chambers (PTW30015 and PTW30016) were investigated, regarding the influence of the central electrode dimensions made of aluminum. Measurements were carried out in photon fields of different beam quality. Corresponding Monte ...

Organ preservation surgery in the larynx cancer started with cordectomy technique in 1850s. Leading laryngologists have described alternative techniques to total laryngectomy (TL). But the extent of their indications, resection limits and reconstruction problems led to oncological and functional failure. Therefore, these techniques were forgotten until 1950s. Studies on the embryology, surgical...

Several national and international protocols have been established for the dosimetry of x-ray beams used in radiotherapy. For the very low energy x-rays (0.035 mm1.0 mm Al HVL) only two codes are available: the UK IPEMB Code of Practice and the German standard, DIN 6809 Part 4. The measurement of very low energy x-ray beams is normally performed with parallel plate ionization chambers calibrate...

The process of melt quenching is utilized in the preparation PbO-TeO2-MgO-Na2O-B2O3 glasses. effect PbO and B2O3 on physical, structural, radiation shielding properties present glasses have been presented this study. As lead concentration rises, both density molecular weight rise, climbing from 3.283 to 3.923 g/cm3 105.638 128.675 g, respectively. utilization as an alternative contributes incre...

Abstract In the present study, Eu 3+ -doped zinc fluoro-telluroborate transparent glasses were prepared by conventional melt−quench technique. Their density and refractive index values measured, using these values, different physical parameters (number density, oxygen packing no. of bonds/vol, etc.) calculated analysed. The XRD pattern displayed a disordered atomic arrangement in glass network....

In this study, we investigated the impact of micro- and nano-sized barium oxide addition on radiation-shielding properties red clay tiles mixed with waste marble different sizes BaO (micro- or nanoparticles) for comparative analysis. The linear attenuation coefficients (LAC) prepared samples were measured using an HPGe detector between 0.060 1.333 MeV. Moreover, a comparison was made experiment...