TY  - JOUR
AU  - Ivanović, Marija D.
AU  - Petrović, Jovana S.
AU  - Savić, Andrej
AU  - Gligorić, Goran
AU  - Miletić, Marjan
AU  - Vukčević, Miodrag
AU  - Bojović, Boško
AU  - Hadžievski, Ljupčo
AU  - Allsop, Thomas P.
AU  - Webb, David J.
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7637
AB  - Objective: The ventilators involved in non-invasive mechanical ventilation commonly provide ventilator support via a facemask. The interface of the mask with a patient promotes air leaks that cause errors in the feedback information provided by a pneumatic sensor and hence patient-ventilator asynchrony with multiple negative consequences. Our objective is to test the possibility of using chest-wall motion measured by an optical fibre-grating sensor as a more accurate non-invasive ventilator triggering mechanism. Approach: The basic premise of our approach is that the measurement accuracy can be improved by using a triggering signal that precedes pneumatic triggering in the neuro-ventilatory coupling sequence. We propose a technique that uses the measurement of chest-wall curvature by a long-period fibre-grating sensor. The sensor was applied externally to the rib-cage and interrogated in the lateral (edge) filtering scheme. The study was performed on 34 healthy volunteers. Statistical data analysis of the time lag between the fibregrating sensor and the reference pneumotachograph was preceded by the removal of the unwanted heartbeat signal by wavelet transform processing. Main results: The results show a consistent fibregrating signal advance with respect to the standard pneumatic signal by (230 +/- 100) ms in both the inspiratory and expiratory phases. We further show that heart activity removal yields a tremendous improvement in sensor accuracy by reducing it from 60 ml to 0.3 ml. Significance: The results indicate that the proposed measurement technique may lead to a more reliable triggering decision. Its imperviousness to air leaks, non-invasiveness, low-cost and ease of implementation offer good prospects for applications in both clinical and homecare ventilation.
T2  - Physiological Measurement
T1  - Real-time chest-wall-motion tracking by a single optical fibre grating: a prospective method for ventilator triggering
VL  - 39
IS  - 4
SP  - 045009
DO  - 10.1088/1361-6579/aab7ac
ER  - 

@article{
author = "Ivanović, Marija D. and Petrović, Jovana S. and Savić, Andrej and Gligorić, Goran and Miletić, Marjan and Vukčević, Miodrag and Bojović, Boško and Hadžievski, Ljupčo and Allsop, Thomas P. and Webb, David J.",
year = "2018",
abstract = "Objective: The ventilators involved in non-invasive mechanical ventilation commonly provide ventilator support via a facemask. The interface of the mask with a patient promotes air leaks that cause errors in the feedback information provided by a pneumatic sensor and hence patient-ventilator asynchrony with multiple negative consequences. Our objective is to test the possibility of using chest-wall motion measured by an optical fibre-grating sensor as a more accurate non-invasive ventilator triggering mechanism. Approach: The basic premise of our approach is that the measurement accuracy can be improved by using a triggering signal that precedes pneumatic triggering in the neuro-ventilatory coupling sequence. We propose a technique that uses the measurement of chest-wall curvature by a long-period fibre-grating sensor. The sensor was applied externally to the rib-cage and interrogated in the lateral (edge) filtering scheme. The study was performed on 34 healthy volunteers. Statistical data analysis of the time lag between the fibregrating sensor and the reference pneumotachograph was preceded by the removal of the unwanted heartbeat signal by wavelet transform processing. Main results: The results show a consistent fibregrating signal advance with respect to the standard pneumatic signal by (230 +/- 100) ms in both the inspiratory and expiratory phases. We further show that heart activity removal yields a tremendous improvement in sensor accuracy by reducing it from 60 ml to 0.3 ml. Significance: The results indicate that the proposed measurement technique may lead to a more reliable triggering decision. Its imperviousness to air leaks, non-invasiveness, low-cost and ease of implementation offer good prospects for applications in both clinical and homecare ventilation.",
journal = "Physiological Measurement",
title = "Real-time chest-wall-motion tracking by a single optical fibre grating: a prospective method for ventilator triggering",
volume = "39",
number = "4",
pages = "045009",
doi = "10.1088/1361-6579/aab7ac"
}

Ivanović, M. D., Petrović, J. S., Savić, A., Gligorić, G., Miletić, M., Vukčević, M., Bojović, B., Hadžievski, L., Allsop, T. P.,& Webb, D. J.. (2018). Real-time chest-wall-motion tracking by a single optical fibre grating: a prospective method for ventilator triggering. in Physiological Measurement, 39(4), 045009.
https://doi.org/10.1088/1361-6579/aab7ac

Ivanović MD, Petrović JS, Savić A, Gligorić G, Miletić M, Vukčević M, Bojović B, Hadžievski L, Allsop TP, Webb DJ. Real-time chest-wall-motion tracking by a single optical fibre grating: a prospective method for ventilator triggering. in Physiological Measurement. 2018;39(4):045009.
doi:10.1088/1361-6579/aab7ac .

Ivanović, Marija D., Petrović, Jovana S., Savić, Andrej, Gligorić, Goran, Miletić, Marjan, Vukčević, Miodrag, Bojović, Boško, Hadžievski, Ljupčo, Allsop, Thomas P., Webb, David J., "Real-time chest-wall-motion tracking by a single optical fibre grating: a prospective method for ventilator triggering" in Physiological Measurement, 39, no. 4 (2018):045009,
https://doi.org/10.1088/1361-6579/aab7ac . .

TY  - JOUR
AU  - Stojanović, Milan
AU  - Osmokrović, Predrag V.
AU  - Boreli, F
AU  - Novković, Dušan N.
AU  - Webb, R
PY  - 1997
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7232
AB  - This paper presents a detailed description of an upgraded silicon surface barrier (SE) detector and analysis of X and gamma radiation and of the spectra given by it. The most frequently used application of these detectors was in measurements and analyses of alpha spectra. However, analysis of spectra gained here presented a silicon surface barrier detector showing possibilities of their wider application in various nuclear techniques and technologies. This specially referes to the feasibility of their use in the conditions that are different from those in laboratories, such as mines, surroundings of nuclear power plants etc. Recorded spectra from Co-57, show that SE detectors are very acceptable in nuclear laboratories for nuclear spectroscopy at room temperatures. On the contrary, field application in nuclear techniques connected with the protection of the environment and counting systems is much wider, and the detector temperature could reach 60 degrees C. (C) 1997 Elsevier Science S.A.
T2  - Thin Solid Films
T1  - Characteristics of large area silicon surface barrier detectors
VL  - 296
IS  - 1-2
SP  - 181
EP  - 183
DO  - 10.1016/S0040-6090(96)09334-0
ER  - 

@article{
author = "Stojanović, Milan and Osmokrović, Predrag V. and Boreli, F and Novković, Dušan N. and Webb, R",
year = "1997",
abstract = "This paper presents a detailed description of an upgraded silicon surface barrier (SE) detector and analysis of X and gamma radiation and of the spectra given by it. The most frequently used application of these detectors was in measurements and analyses of alpha spectra. However, analysis of spectra gained here presented a silicon surface barrier detector showing possibilities of their wider application in various nuclear techniques and technologies. This specially referes to the feasibility of their use in the conditions that are different from those in laboratories, such as mines, surroundings of nuclear power plants etc. Recorded spectra from Co-57, show that SE detectors are very acceptable in nuclear laboratories for nuclear spectroscopy at room temperatures. On the contrary, field application in nuclear techniques connected with the protection of the environment and counting systems is much wider, and the detector temperature could reach 60 degrees C. (C) 1997 Elsevier Science S.A.",
journal = "Thin Solid Films",
title = "Characteristics of large area silicon surface barrier detectors",
volume = "296",
number = "1-2",
pages = "181-183",
doi = "10.1016/S0040-6090(96)09334-0"
}

Stojanović, M., Osmokrović, P. V., Boreli, F., Novković, D. N.,& Webb, R.. (1997). Characteristics of large area silicon surface barrier detectors. in Thin Solid Films, 296(1-2), 181-183.
https://doi.org/10.1016/S0040-6090(96)09334-0

Stojanović M, Osmokrović PV, Boreli F, Novković DN, Webb R. Characteristics of large area silicon surface barrier detectors. in Thin Solid Films. 1997;296(1-2):181-183.
doi:10.1016/S0040-6090(96)09334-0 .

Stojanović, Milan, Osmokrović, Predrag V., Boreli, F, Novković, Dušan N., Webb, R, "Characteristics of large area silicon surface barrier detectors" in Thin Solid Films, 296, no. 1-2 (1997):181-183,
https://doi.org/10.1016/S0040-6090(96)09334-0 . .