Search Results - "Hourdakis, Costas"

Radiological risk assessment method for the interim storage of radioactive materials by Kaissas, Ioannis, Hourdakis, Costas J., Mitrakos, Dimitris

“…Safe storage of radioactive materials is based on three universal radiation protection principles. Justification, optimization and dose limits are applicable…”
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Updating national diagnostic reference levels for computed tomography in Greece: Challenges on patient protection optimisation by Simantirakis, George, Hourdakis, Costas J., Kalathaki, Maria, Liotsou, Vasiliki, Nikolaou, Magda, Pafilis, Christos, Thrapsanioti, Zoi, Tritakis, Panagiotis, Carinou, Eleftheria

“…•Greek DRLs were revised for 7 adult CT exams and established for 5 additional ones.•Revised DRLs exhibited lower reduction compared to other national…”
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Significance of the sample determination in assessment of radiological examinations frequencies for population doses due to medical exposures by Hourdakis, Costas J., Vogiatzi, Stavroula, Kalathaki, Maria, Tritakis, Panagiotis, Simantirakis, George, Pafilis, Christos, Manousaridis, George, Thrapsanioti, Zoi, Liotsou, Vassiliki, Nikolaou, Magda, Tzoumi, Nefeli, Lamprinakou, Martha

“…[Display omitted] •Optimized survey sample design improves radiological exams frequency assessments.•Data collection from a limited number of facilities may be…”
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On the use of a novel Ferrous Xylenol-orange gelatin dosimeter for HDR brachytherapy commissioning and quality assurance testing by Pappas, Eleftherios P., Peppa, Vasiliki, Hourdakis, Costas J., Karaiskos, Pantelis, Papagiannis, Panagiotis

“…•TrueView, a commercially available 3D chemical dosimeter, is employed for the first time.•3D dosimetry is performed using optical computed tomography for skin…”
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Remote virtual regulatory inspections of facilities and practices utilising ionising radiation and MRI installations during the Covid-19 pandemic by Hourdakis, Costas J, Vogiatzi, Stavroula, Pafilis, Christos, Kalathaki, Maria, Tritakis, Panagiotis, Nikolaou, Magda, Manios, George, Liotsou, Vasiliki, Thrapsanioti, Zoi, Lambrinakou, Martha

“…Covid-19 pandemic imposes crucial social distancing rules and restriction measures; therefore, the access to facilities and sites, in order to perform on-site…”
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Dose reduction in maxillofacial imaging using low dose Cone Beam CT by Tsiklakis, Kostas, Donta, Catherine, Gavala, Sophia, Karayianni, Kety, Kamenopoulou, Vasiliki, Hourdakis, Costas J.

“…(a) To measure the absorbed dose at certain anatomical sites of a RANDO phantom and to estimate the effective dose in radiographic imaging of the jaws using…”
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Reference levels and patient doses in interventional cardiology procedures in Greece by Simantirakis, George, Koukorava, Christina, Kalathaki, Maria, Pafilis, Christos, Kaisas, Ioannis, Economides, Sotirios, Hourdakis, Costas J., Kamenopoulou, Vassiliki, Georgiou, Evaggelos

“…Objectives To present a national survey that was performed for the establishment of national reference levels (RLs) for interventional cardiology (IC)…”
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Availability of technology for managing cancer patients in the Southeast European (SEE) region by Dosanjh, Manjit, Ristova, Mimoza, Gershan, Vesna, Georgieva, Petya, Balin Kovacevic, Marijana, Bregu, Ledio, Coralic, Irma, Djurovic, Tamara, Dosieva, Deyana, Foka, Yiota, Fröbe, Ana, Hatziioannou, Konstantinos, Hourdakis, Costas J., Kabashi, Yllka, Kalev, Dimitar, Kurtishi, Ilir, Litov, Leandar, Mezelxhiu, Beqir, Nestoroska Madjunarova, Svetlana, Nikolova, Gordana, Skrk, Damijan, Smajlbegovic, Velda, Smichkoska, Snezana, Stojkovski, Igor, Strojan, Primož, Tecic, Zdravka, Tešanović, Dušanka, Todorovic, Vladimir, Valerianova, Zdravka

“…•Gap of public on-the-ground cancer data was addressed through questionnaires to professionals in the SEE region.•There is a lack of diagnostic imaging and…”
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Comparison of pencil-type ionization chamber calibration results and methods between dosimetry laboratories by Hourdakis, Costas J, Büermann, Ludwig, Ciraj-Bjelac, Olivera, Csete, Istvan, Delis, Harry, Gomola, Igor, Persson, Linda, Novak, Leos, Petkov, Ivailo, Toroi, Paula

“…Highlights • A CT pencil-type chamber was calibrated at eight dosimetry laboratories. • Three different calibration methods were assessed and compared. • The “…”
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[P284] Dosimetry audits in radiotherapy: 15 years of experience and lessons learnt by Zourari, Kyveli, Thrapsanioti, Zoi, Boziari, Argiro, Hourdakis, Costas J.

“…Dosimetry audits (DA) are useful for the evaluation of the dosimetric quality, planned dose accuracy, treatment complexity and deliverability of radiotherapy…”
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IAEA-SSDL bilateral comparisons for diagnostic level air kerma measurement standards by Csete, István, Toroi, Paula, Steuer, Andreas, Hourdakis, Costas, Gabris, Frantisek, Jozela, Sibusiso, Kosunen, Antti, Cardoso, João, Sochor, Vladimir, Persson, Linda, Glavič Cindro, Denis, Arib, Mehenna, Smekhov, Mark

“…•Comparison program for diagnostic X-ray radiations is available at the IAEA.•Detailed results of the first eleven participants are reported.•Each result is…”
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