TY  - JOUR
AU  - Siiskonen, Teemu
AU  - Ciraj-Bjelac, Olivera
AU  - Dabin, Jeremie
AU  - Diklić, Ana
AU  - Domienik-Andrzejewska, Joanna
AU  - Farah, Jad
AU  - Fernandez, Jose Miguel
AU  - Gallagher, Aoife
AU  - Hourdakis, Constantine J.
AU  - Jurković, Slaven
AU  - Jarvinen, Hannu
AU  - Jarvinen, J.
AU  - Knežević, Željka
AU  - Koukorava, Christina
AU  - Maccia, Carlo
AU  - Majer, Marija
AU  - Malchair, Francoise
AU  - Riccardi, Lucia
AU  - Rizk, C.
AU  - Sanchez, Roberto Mariano
AU  - Sandborg, Michael
AU  - Merce, Marta Sans
AU  - Segota, D.
AU  - Sierpowska, Joanna
AU  - Simantirakis, George
AU  - Sukupova, Lucie
AU  - Thrapsanioti, Zoi
AU  - Vano, Eliseo
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7889
AB  - Interventional cardiac procedures may be associated with high patient doses and therefore require special attention to protect the patients from radiation injuries such as skin erythema, cardiovascular tissue reactions or radiation-induced cancer. In this study, patient exposure data is collected from 13 countries (37 clinics and nearly 50 interventional rooms) and for 10 different procedures. Dose data was collected from a total of 14,922 interventional cardiology procedures. Based on these data European diagnostic reference levels (DRL) for air kerma-area product are suggested for coronary angiography (CA, DRL = 35 Gy cm2), percutaneous coronary intervention (PCI, 85 Gy cm2), transcatheter aortic valve implantation (TAVI, 130 Gy cm2), electrophysiological procedures (12 Gy cm2) and pacemaker implantations. Pacemaker implantations were further divided into single-chamber (2.5 Gy cm2) and dual chamber (3.5 Gy cm2) procedures and implantations of cardiac resynchronization therapy pacemaker (18 Gy cm2). Results show that relatively new techniques such as TAVI and treatment of chronic total occlusion (CTO) often produce relatively high doses, and thus emphasises the need for use of an optimization tool such as DRL to assist in reducing patient exposure. The generic DRL presented here facilitate comparison of patient exposure in interventional cardiology. © 2018 Associazione Italiana di Fisica Medica
T2  - Physica Medica
T1  - Establishing the European diagnostic reference levels for interventional cardiology
VL  - 54
SP  - 42
EP  - 48
DO  - 10.1016/j.ejmp.2018.09.012
ER  - 

@article{
author = "Siiskonen, Teemu and Ciraj-Bjelac, Olivera and Dabin, Jeremie and Diklić, Ana and Domienik-Andrzejewska, Joanna and Farah, Jad and Fernandez, Jose Miguel and Gallagher, Aoife and Hourdakis, Constantine J. and Jurković, Slaven and Jarvinen, Hannu and Jarvinen, J. and Knežević, Željka and Koukorava, Christina and Maccia, Carlo and Majer, Marija and Malchair, Francoise and Riccardi, Lucia and Rizk, C. and Sanchez, Roberto Mariano and Sandborg, Michael and Merce, Marta Sans and Segota, D. and Sierpowska, Joanna and Simantirakis, George and Sukupova, Lucie and Thrapsanioti, Zoi and Vano, Eliseo",
year = "2018",
abstract = "Interventional cardiac procedures may be associated with high patient doses and therefore require special attention to protect the patients from radiation injuries such as skin erythema, cardiovascular tissue reactions or radiation-induced cancer. In this study, patient exposure data is collected from 13 countries (37 clinics and nearly 50 interventional rooms) and for 10 different procedures. Dose data was collected from a total of 14,922 interventional cardiology procedures. Based on these data European diagnostic reference levels (DRL) for air kerma-area product are suggested for coronary angiography (CA, DRL = 35 Gy cm2), percutaneous coronary intervention (PCI, 85 Gy cm2), transcatheter aortic valve implantation (TAVI, 130 Gy cm2), electrophysiological procedures (12 Gy cm2) and pacemaker implantations. Pacemaker implantations were further divided into single-chamber (2.5 Gy cm2) and dual chamber (3.5 Gy cm2) procedures and implantations of cardiac resynchronization therapy pacemaker (18 Gy cm2). Results show that relatively new techniques such as TAVI and treatment of chronic total occlusion (CTO) often produce relatively high doses, and thus emphasises the need for use of an optimization tool such as DRL to assist in reducing patient exposure. The generic DRL presented here facilitate comparison of patient exposure in interventional cardiology. © 2018 Associazione Italiana di Fisica Medica",
journal = "Physica Medica",
title = "Establishing the European diagnostic reference levels for interventional cardiology",
volume = "54",
pages = "42-48",
doi = "10.1016/j.ejmp.2018.09.012"
}

Siiskonen, T., Ciraj-Bjelac, O., Dabin, J., Diklić, A., Domienik-Andrzejewska, J., Farah, J., Fernandez, J. M., Gallagher, A., Hourdakis, C. J., Jurković, S., Jarvinen, H., Jarvinen, J., Knežević, Ž., Koukorava, C., Maccia, C., Majer, M., Malchair, F., Riccardi, L., Rizk, C., Sanchez, R. M., Sandborg, M., Merce, M. S., Segota, D., Sierpowska, J., Simantirakis, G., Sukupova, L., Thrapsanioti, Z.,& Vano, E.. (2018). Establishing the European diagnostic reference levels for interventional cardiology. in Physica Medica, 54, 42-48.
https://doi.org/10.1016/j.ejmp.2018.09.012

Siiskonen T, Ciraj-Bjelac O, Dabin J, Diklić A, Domienik-Andrzejewska J, Farah J, Fernandez JM, Gallagher A, Hourdakis CJ, Jurković S, Jarvinen H, Jarvinen J, Knežević Ž, Koukorava C, Maccia C, Majer M, Malchair F, Riccardi L, Rizk C, Sanchez RM, Sandborg M, Merce MS, Segota D, Sierpowska J, Simantirakis G, Sukupova L, Thrapsanioti Z, Vano E. Establishing the European diagnostic reference levels for interventional cardiology. in Physica Medica. 2018;54:42-48.
doi:10.1016/j.ejmp.2018.09.012 .

Siiskonen, Teemu, Ciraj-Bjelac, Olivera, Dabin, Jeremie, Diklić, Ana, Domienik-Andrzejewska, Joanna, Farah, Jad, Fernandez, Jose Miguel, Gallagher, Aoife, Hourdakis, Constantine J., Jurković, Slaven, Jarvinen, Hannu, Jarvinen, J., Knežević, Željka, Koukorava, Christina, Maccia, Carlo, Majer, Marija, Malchair, Francoise, Riccardi, Lucia, Rizk, C., Sanchez, Roberto Mariano, Sandborg, Michael, Merce, Marta Sans, Segota, D., Sierpowska, Joanna, Simantirakis, George, Sukupova, Lucie, Thrapsanioti, Zoi, Vano, Eliseo, "Establishing the European diagnostic reference levels for interventional cardiology" in Physica Medica, 54 (2018):42-48,
https://doi.org/10.1016/j.ejmp.2018.09.012 . .

TY  - JOUR
AU  - Hourdakis, Constantine J.
AU  - Bueermann, Ludwig
AU  - Ciraj-Bjelac, Olivera
AU  - Csete, Istvan
AU  - Delis, Harry
AU  - Gomola, Igor
AU  - Persson, Linda
AU  - Novak, Leos
AU  - Petkov, Ivailo
AU  - Toroi, Paula
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/271
AB  - A comparison of calibration results and procedures in terms of air kerma length product, P-KL, and air kerma, K, was conducted between eight dosimetry laboratories. A pencil-type ionization chamber (IC), generally used for computed tomography dose measurements, was calibrated according to three calibration methods, while its residual signal and other characteristics (sensitivity profile, active length) were assessed. The results showed that the partial irradiation method is the preferred method for the pencil-type IC calibration in terms of P-KL and it could be applied by the calibration laboratories successfully. Most of the participating laboratories achieved high level of agreement ( GT 99%) for both dosimetry quantities (P-KL and K). Estimated relative standard uncertainties of comparison results vary among laboratories from 0.34% to 2.32% depending on the quantity, beam quality and calibration method applied. Detailed analysis of the assigned uncertainties have been presented and discussed. (C) 2015 Associazione Italiana di Fisica Medica. Published by Elsevier Ltd. All rights reserved.
T2  - Physica Medica
T1  - Comparison of pencil-type ionization chamber calibration results and methods between dosimetry laboratories
VL  - 32
IS  - 1
SP  - 42
EP  - 51
DO  - 10.1016/j.ejmp.2015.09.008
ER  - 

@article{
author = "Hourdakis, Constantine J. and Bueermann, Ludwig and Ciraj-Bjelac, Olivera and Csete, Istvan and Delis, Harry and Gomola, Igor and Persson, Linda and Novak, Leos and Petkov, Ivailo and Toroi, Paula",
year = "2016",
abstract = "A comparison of calibration results and procedures in terms of air kerma length product, P-KL, and air kerma, K, was conducted between eight dosimetry laboratories. A pencil-type ionization chamber (IC), generally used for computed tomography dose measurements, was calibrated according to three calibration methods, while its residual signal and other characteristics (sensitivity profile, active length) were assessed. The results showed that the partial irradiation method is the preferred method for the pencil-type IC calibration in terms of P-KL and it could be applied by the calibration laboratories successfully. Most of the participating laboratories achieved high level of agreement ( GT 99%) for both dosimetry quantities (P-KL and K). Estimated relative standard uncertainties of comparison results vary among laboratories from 0.34% to 2.32% depending on the quantity, beam quality and calibration method applied. Detailed analysis of the assigned uncertainties have been presented and discussed. (C) 2015 Associazione Italiana di Fisica Medica. Published by Elsevier Ltd. All rights reserved.",
journal = "Physica Medica",
title = "Comparison of pencil-type ionization chamber calibration results and methods between dosimetry laboratories",
volume = "32",
number = "1",
pages = "42-51",
doi = "10.1016/j.ejmp.2015.09.008"
}

Hourdakis, C. J., Bueermann, L., Ciraj-Bjelac, O., Csete, I., Delis, H., Gomola, I., Persson, L., Novak, L., Petkov, I.,& Toroi, P.. (2016). Comparison of pencil-type ionization chamber calibration results and methods between dosimetry laboratories. in Physica Medica, 32(1), 42-51.
https://doi.org/10.1016/j.ejmp.2015.09.008

Hourdakis CJ, Bueermann L, Ciraj-Bjelac O, Csete I, Delis H, Gomola I, Persson L, Novak L, Petkov I, Toroi P. Comparison of pencil-type ionization chamber calibration results and methods between dosimetry laboratories. in Physica Medica. 2016;32(1):42-51.
doi:10.1016/j.ejmp.2015.09.008 .

Hourdakis, Constantine J., Bueermann, Ludwig, Ciraj-Bjelac, Olivera, Csete, Istvan, Delis, Harry, Gomola, Igor, Persson, Linda, Novak, Leos, Petkov, Ivailo, Toroi, Paula, "Comparison of pencil-type ionization chamber calibration results and methods between dosimetry laboratories" in Physica Medica, 32, no. 1 (2016):42-51,
https://doi.org/10.1016/j.ejmp.2015.09.008 . .

TY  - JOUR
AU  - Hourdakis, Constantine J.
AU  - Csete, I.
AU  - Daures, J.
AU  - Jarvinen, Hannu
AU  - Mihailescu, L-C
AU  - Sochor, V.
AU  - Novak, L.
AU  - Pedersen, M.
AU  - Kosunen, A.
AU  - Toroi, P.
AU  - Denoziere, M.
AU  - Buermann, L.
AU  - Megzifene, A.
AU  - Einarsson, G.
AU  - Ferrari, P.
AU  - dePooter, J.
AU  - Bjerke, H.
AU  - Brodecki, M.
AU  - Cardoso, J.
AU  - Bercea, S.
AU  - Ciraj-Bjelac, Olivera
AU  - Compel, J.
AU  - Glavič-Cindro, Denis
AU  - Ginjaume, Merce
AU  - Persson, L.
AU  - Grindborg, J-E
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2749
AB  - The EURAMET #1177 project, identified as EURAMET RI(I)-S9 comparison, was the first EURAMET wide scale supplementary comparison in the field of diagnostic radiology for air kerma area product, P-KA, and air kerma, K. It was conducted with the goal of testing the measurement and calibration capabilities for P-KA and K, as well as of supporting the relevant CMCs of the participating laboratories. Two commercial KAP meters and an ionization chamber were selected as transfer instruments and circulated between the 22 European participants. The measurements were performed from April 2011 until July 2012. The stability and the performance of the transfer instruments were tested by the pilot laboratory (IRCL/GAEC-EIM) and few other laboratories as well. The test results revealed that the energy (radiation quality), Q, irradiation area, A, and air kerma rate, K dependences of response of the transfer KAP meters influence the comparison of the results when different measurement conditions were pertained and therefore, appropriate correction factors were obtained and applied to the reported calibration results of the laboratories, when necessary. The comparison reference values (CRVs) for each instrument were determined as the weighted mean of the calibration coefficients of the three participating primary laboratories. The relative standard uncertainty of the CRVs were in the range of (0.4-1.6)% depending on the transfer instruments and beam qualities. The comparison result as the ratio of the corrected calibration coefficient of participant and the respective CRV, and its uncertainty were calculated for all beam qualities and transfer instruments. The informative degrees of equivalence (DoE) were calculated for the refrence RQR 5 beam quality. In case of air kema area product measurements the results for the RADCAL PDC KAP meter were used. The 216 KAP meter calibration results of the two different transfer instruments in terms of air kerma area product were consistent within 5% except 40 results of 8 participants. The 103 air kerma calibration results were consistent within 1.7%, except 10 results of 4 participants.
T2  - Metrologia
T1  - Comparison of air kerma area product and air kerma meter calibrations for X-ray radiation qualities used in diagnostic radiology
VL  - 52
DO  - 10.1088/0026-1394/52/1A/06024
ER  - 

@article{
author = "Hourdakis, Constantine J. and Csete, I. and Daures, J. and Jarvinen, Hannu and Mihailescu, L-C and Sochor, V. and Novak, L. and Pedersen, M. and Kosunen, A. and Toroi, P. and Denoziere, M. and Buermann, L. and Megzifene, A. and Einarsson, G. and Ferrari, P. and dePooter, J. and Bjerke, H. and Brodecki, M. and Cardoso, J. and Bercea, S. and Ciraj-Bjelac, Olivera and Compel, J. and Glavič-Cindro, Denis and Ginjaume, Merce and Persson, L. and Grindborg, J-E",
year = "2015",
abstract = "The EURAMET #1177 project, identified as EURAMET RI(I)-S9 comparison, was the first EURAMET wide scale supplementary comparison in the field of diagnostic radiology for air kerma area product, P-KA, and air kerma, K. It was conducted with the goal of testing the measurement and calibration capabilities for P-KA and K, as well as of supporting the relevant CMCs of the participating laboratories. Two commercial KAP meters and an ionization chamber were selected as transfer instruments and circulated between the 22 European participants. The measurements were performed from April 2011 until July 2012. The stability and the performance of the transfer instruments were tested by the pilot laboratory (IRCL/GAEC-EIM) and few other laboratories as well. The test results revealed that the energy (radiation quality), Q, irradiation area, A, and air kerma rate, K dependences of response of the transfer KAP meters influence the comparison of the results when different measurement conditions were pertained and therefore, appropriate correction factors were obtained and applied to the reported calibration results of the laboratories, when necessary. The comparison reference values (CRVs) for each instrument were determined as the weighted mean of the calibration coefficients of the three participating primary laboratories. The relative standard uncertainty of the CRVs were in the range of (0.4-1.6)% depending on the transfer instruments and beam qualities. The comparison result as the ratio of the corrected calibration coefficient of participant and the respective CRV, and its uncertainty were calculated for all beam qualities and transfer instruments. The informative degrees of equivalence (DoE) were calculated for the refrence RQR 5 beam quality. In case of air kema area product measurements the results for the RADCAL PDC KAP meter were used. The 216 KAP meter calibration results of the two different transfer instruments in terms of air kerma area product were consistent within 5% except 40 results of 8 participants. The 103 air kerma calibration results were consistent within 1.7%, except 10 results of 4 participants.",
journal = "Metrologia",
title = "Comparison of air kerma area product and air kerma meter calibrations for X-ray radiation qualities used in diagnostic radiology",
volume = "52",
doi = "10.1088/0026-1394/52/1A/06024"
}

Hourdakis, C. J., Csete, I., Daures, J., Jarvinen, H., Mihailescu, L., Sochor, V., Novak, L., Pedersen, M., Kosunen, A., Toroi, P., Denoziere, M., Buermann, L., Megzifene, A., Einarsson, G., Ferrari, P., dePooter, J., Bjerke, H., Brodecki, M., Cardoso, J., Bercea, S., Ciraj-Bjelac, O., Compel, J., Glavič-Cindro, D., Ginjaume, M., Persson, L.,& Grindborg, J.. (2015). Comparison of air kerma area product and air kerma meter calibrations for X-ray radiation qualities used in diagnostic radiology. in Metrologia, 52.
https://doi.org/10.1088/0026-1394/52/1A/06024

Hourdakis CJ, Csete I, Daures J, Jarvinen H, Mihailescu L, Sochor V, Novak L, Pedersen M, Kosunen A, Toroi P, Denoziere M, Buermann L, Megzifene A, Einarsson G, Ferrari P, dePooter J, Bjerke H, Brodecki M, Cardoso J, Bercea S, Ciraj-Bjelac O, Compel J, Glavič-Cindro D, Ginjaume M, Persson L, Grindborg J. Comparison of air kerma area product and air kerma meter calibrations for X-ray radiation qualities used in diagnostic radiology. in Metrologia. 2015;52.
doi:10.1088/0026-1394/52/1A/06024 .

Hourdakis, Constantine J., Csete, I., Daures, J., Jarvinen, Hannu, Mihailescu, L-C, Sochor, V., Novak, L., Pedersen, M., Kosunen, A., Toroi, P., Denoziere, M., Buermann, L., Megzifene, A., Einarsson, G., Ferrari, P., dePooter, J., Bjerke, H., Brodecki, M., Cardoso, J., Bercea, S., Ciraj-Bjelac, Olivera, Compel, J., Glavič-Cindro, Denis, Ginjaume, Merce, Persson, L., Grindborg, J-E, "Comparison of air kerma area product and air kerma meter calibrations for X-ray radiation qualities used in diagnostic radiology" in Metrologia, 52 (2015),
https://doi.org/10.1088/0026-1394/52/1A/06024 . .