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Journal Details
Format
Journal
eISSN
1898-0309
First Published
30 Dec 2008
Publication timeframe
4 times per year
Languages
English

Search

Volume 14 (2008): Issue 4 (December 2008)

Journal Details
Format
Journal
eISSN
1898-0309
First Published
30 Dec 2008
Publication timeframe
4 times per year
Languages
English

Search

5 Articles
Open Access

An Unbiased View of the History of Polish Medical Physics by a Senior Polish Medical Physicist

Published Online: 14 Apr 2009
Page range: 183 - 196

Abstract

An Unbiased View of the History of Polish Medical Physics by a Senior Polish Medical Physicist

Keywords

  • history
  • Polish Medical Physics
  • Polish Society of Medical Physics
Open Access

Optimal assignment of workers to supporting services in a hospital

Published Online: 14 Apr 2009
Page range: 197 - 206

Abstract

Optimal assignment of workers to supporting services in a hospital

Supporting services play an important role in health care institutions such as hospitals. This paper presents an application of operations research model for optimal allocation of workers among supporting services in a public hospital. The services include logistics, inventory management, financial management, operations management, medical analysis, etc. The optimality criterion of the problem is to minimize operations costs of supporting services subject to some specific constraints. The constraints represent specific conditions for resource allocation in a hospital. The overall problem is formulated as an integer program in the literature known as the assignment problem, where the decision variables represent the assignment of people to various jobs. The results of some computational experiments modeled on a real data from a selected Polish hospital are reported.

Keywords

  • assignment problem
  • integer programming
  • services operations management
  • health care planning
Open Access

National protocol for quality assurance in DXA-bone densitometry

Published Online: 14 Apr 2009
Page range: 207 - 215

Abstract

National protocol for quality assurance in DXA-bone densitometry

Osteoporosis becomes largely one of the most important socially significant and costly diseases. Modern techniques (DXA, US) are applied for bone densitometry. The paper presents a protocol for quality assurance especially of DXA-bone densitometers including quality control made in compliance with international standards (ISCD, IOF). The methodology has been tested in practice by measurements on site-functional assessment, entrance dose, radiation protection, calibration, in-vitro precision. It is expected to raise the quality of the diagnostic process in concert with the EU Medical Directive 97/43 particularly for population screening and sensitive groups. The protocol is an essential part of the National Program for constraining osteoporosis which has been elaborated at the Ministry of Health and at present under implementation throughout the country. It aims at reducing the risk, factors spreading, at diminishing the fracture risk the morbidity and the mortality from osteoporosis. An integral multidisciplinary approach to the problem solving is applied as well as training on three levels — doctors, patients, population, which effectively will contribute for obtaining real results in preventing osteoporosis.

Keywords

  • DXA bone densitometry
  • quality assurance protocol
  • QC measurements
Open Access

Skin dosimetry of patients during interventional cardiology procedures in the Czech Republic

Published Online: 14 Apr 2009
Page range: 217 - 225

Abstract

Skin dosimetry of patients during interventional cardiology procedures in the Czech Republic

The aim of the study is to determine distribution of air kerma-area product, fluoro time and number of frames values for the two most frequent procedures in the interventional cardiology, to reconstruct skin dose distributions for some patients undergoing coronarography and percutaneous transluminal coronary angioplasty procedures. Patient dose data were obtained from X-ray unit dose monitoring software report from one hospital and the reconstructions were performed in MATLAB. Dependence of maximum skin dose on air kerma-area product, fluoro time and number of frames was determined to assess trigger levels of these quantities, which can indicate possible exceeding of the 2 Gy skin dose threshold.

Keywords

  • coronarography
  • PTCA
  • kerma-area product
  • skin dose distribution
  • maximum skin dose
Open Access

Changes in the cardiac muscle electric activity as a result of Coronary Artery Bypass Graft operation

Published Online: 14 Apr 2009
Page range: 227 - 249

Abstract

Changes in the cardiac muscle electric activity as a result of Coronary Artery Bypass Graft operation

Many bioelectric signals have a complex internal structure that can be a rich source of information on the tissue or cell processes. The structure of such signals can be analysed in detail by applying digital methods of signal processing. Therefore, of substantial use in diagnosis of the coronary arterial disease is the method of digital enhancement of increasing signal resolution ECG (NURSE-ECG), permitting detection of temporary changes in the electric potentials in the cardiac muscle in the process of depolarisation. Thanks to the application of NURSE-ECG it has become possible to detect relatively small changes in the electric activity of particular fragments of the cardiac muscle undetectable by the standard ECG method, caused by ischemia, the effect of a drug or infarct.

The aim of this study was to identify and analyse changes in the electric activity of the cardiac muscle as a result of the Coronary Artery Bypass Graft (CABG) operation. In this study the method of NURSE-ECG has been applied in order to identify and analyse changes in the electric activity of the cardiac muscle as a result of the CABG operation. In the study performed in cooperation of the Institute of Physics Adam Mickiewicz University and the Strus Hospital, Cardiac Surgery Ward, 37 patients with advanced coronary arterial disease were asked to participate. The patients were examined prior to the operation, on the day after the operation and two months after the operation and a year after the operation. The ECG recordings were subjected to a numerical procedure of resolution enhancement by a NURSE-ECG program to reveal the tentative changes in the electric potential of the cardiac muscle on its depolarisation. Results of the study have shown that the NURSE ECG method can be applied to monitor changes in the electric activity of the cardiac muscle occurring as a result of CABG operation. One the second day after the operation in the majority of patients (70%) a rapid decrease of the total cardiac muscle activity was observed. The NURSE ECG seems to be a promising supplementary method in medical diagnosis. In particular it can be applied for qualification of patients for CABG operation and for verification of the operation effects.

Keywords

  • coronary artery bypass graft
  • depolarization
  • numerical sygnal resolution enhancement electrocardiography
  • NURSE-ECG
5 Articles
Open Access

An Unbiased View of the History of Polish Medical Physics by a Senior Polish Medical Physicist

Published Online: 14 Apr 2009
Page range: 183 - 196

Abstract

An Unbiased View of the History of Polish Medical Physics by a Senior Polish Medical Physicist

Keywords

  • history
  • Polish Medical Physics
  • Polish Society of Medical Physics
Open Access

Optimal assignment of workers to supporting services in a hospital

Published Online: 14 Apr 2009
Page range: 197 - 206

Abstract

Optimal assignment of workers to supporting services in a hospital

Supporting services play an important role in health care institutions such as hospitals. This paper presents an application of operations research model for optimal allocation of workers among supporting services in a public hospital. The services include logistics, inventory management, financial management, operations management, medical analysis, etc. The optimality criterion of the problem is to minimize operations costs of supporting services subject to some specific constraints. The constraints represent specific conditions for resource allocation in a hospital. The overall problem is formulated as an integer program in the literature known as the assignment problem, where the decision variables represent the assignment of people to various jobs. The results of some computational experiments modeled on a real data from a selected Polish hospital are reported.

Keywords

  • assignment problem
  • integer programming
  • services operations management
  • health care planning
Open Access

National protocol for quality assurance in DXA-bone densitometry

Published Online: 14 Apr 2009
Page range: 207 - 215

Abstract

National protocol for quality assurance in DXA-bone densitometry

Osteoporosis becomes largely one of the most important socially significant and costly diseases. Modern techniques (DXA, US) are applied for bone densitometry. The paper presents a protocol for quality assurance especially of DXA-bone densitometers including quality control made in compliance with international standards (ISCD, IOF). The methodology has been tested in practice by measurements on site-functional assessment, entrance dose, radiation protection, calibration, in-vitro precision. It is expected to raise the quality of the diagnostic process in concert with the EU Medical Directive 97/43 particularly for population screening and sensitive groups. The protocol is an essential part of the National Program for constraining osteoporosis which has been elaborated at the Ministry of Health and at present under implementation throughout the country. It aims at reducing the risk, factors spreading, at diminishing the fracture risk the morbidity and the mortality from osteoporosis. An integral multidisciplinary approach to the problem solving is applied as well as training on three levels — doctors, patients, population, which effectively will contribute for obtaining real results in preventing osteoporosis.

Keywords

  • DXA bone densitometry
  • quality assurance protocol
  • QC measurements
Open Access

Skin dosimetry of patients during interventional cardiology procedures in the Czech Republic

Published Online: 14 Apr 2009
Page range: 217 - 225

Abstract

Skin dosimetry of patients during interventional cardiology procedures in the Czech Republic

The aim of the study is to determine distribution of air kerma-area product, fluoro time and number of frames values for the two most frequent procedures in the interventional cardiology, to reconstruct skin dose distributions for some patients undergoing coronarography and percutaneous transluminal coronary angioplasty procedures. Patient dose data were obtained from X-ray unit dose monitoring software report from one hospital and the reconstructions were performed in MATLAB. Dependence of maximum skin dose on air kerma-area product, fluoro time and number of frames was determined to assess trigger levels of these quantities, which can indicate possible exceeding of the 2 Gy skin dose threshold.

Keywords

  • coronarography
  • PTCA
  • kerma-area product
  • skin dose distribution
  • maximum skin dose
Open Access

Changes in the cardiac muscle electric activity as a result of Coronary Artery Bypass Graft operation

Published Online: 14 Apr 2009
Page range: 227 - 249

Abstract

Changes in the cardiac muscle electric activity as a result of Coronary Artery Bypass Graft operation

Many bioelectric signals have a complex internal structure that can be a rich source of information on the tissue or cell processes. The structure of such signals can be analysed in detail by applying digital methods of signal processing. Therefore, of substantial use in diagnosis of the coronary arterial disease is the method of digital enhancement of increasing signal resolution ECG (NURSE-ECG), permitting detection of temporary changes in the electric potentials in the cardiac muscle in the process of depolarisation. Thanks to the application of NURSE-ECG it has become possible to detect relatively small changes in the electric activity of particular fragments of the cardiac muscle undetectable by the standard ECG method, caused by ischemia, the effect of a drug or infarct.

The aim of this study was to identify and analyse changes in the electric activity of the cardiac muscle as a result of the Coronary Artery Bypass Graft (CABG) operation. In this study the method of NURSE-ECG has been applied in order to identify and analyse changes in the electric activity of the cardiac muscle as a result of the CABG operation. In the study performed in cooperation of the Institute of Physics Adam Mickiewicz University and the Strus Hospital, Cardiac Surgery Ward, 37 patients with advanced coronary arterial disease were asked to participate. The patients were examined prior to the operation, on the day after the operation and two months after the operation and a year after the operation. The ECG recordings were subjected to a numerical procedure of resolution enhancement by a NURSE-ECG program to reveal the tentative changes in the electric potential of the cardiac muscle on its depolarisation. Results of the study have shown that the NURSE ECG method can be applied to monitor changes in the electric activity of the cardiac muscle occurring as a result of CABG operation. One the second day after the operation in the majority of patients (70%) a rapid decrease of the total cardiac muscle activity was observed. The NURSE ECG seems to be a promising supplementary method in medical diagnosis. In particular it can be applied for qualification of patients for CABG operation and for verification of the operation effects.

Keywords

  • coronary artery bypass graft
  • depolarization
  • numerical sygnal resolution enhancement electrocardiography
  • NURSE-ECG

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