Zobrazeno 1 - 10
of 51
pro vyhledávání: '"J. Nosil"'
Publikováno v:
Proceedings of the 22nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society (Cat. No.00CH37143).
The testing of a mammographic AEC system involves the insertion of suitable phantoms to take the place of the varying thicknesses and composition of the breasts encountered clinically. In this paper we examine the usefulness of mixed-material phantom
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::929faa80d6265a75a49945fdb45251b9
https://doi.org/10.1109/iembs.2000.898020
https://doi.org/10.1109/iembs.2000.898020
Publikováno v:
European Journal of Nuclear Medicine. 2:1-8
Theoretical excitation functions have been used for the production of neutron-deficient rubidium isotopes by (α, kn) reactions on 79Br and 81Br. Krypton generators have been produced using the internal beam of the cyclotron of the Rudjer Boskovic In
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9943d3df6830687833cb7134ac5033e5
https://doi.org/10.1007/bf00448099
https://doi.org/10.1007/bf00448099
Publikováno v:
Physics in Medicine and Biology. 32:1407-1416
Radioactive sources of finite volume containing 133Xe, 67Ga, 99Tcm and 111In were used to measure the attenuation coefficient, mu, in water at six different energies in the range 80-296 keV using an Anger camera. The experimental accuracy was about 7
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a79f110fcfe07c88a081dcae0d43212
https://doi.org/10.1088/0031-9155/32/11/003
https://doi.org/10.1088/0031-9155/32/11/003
Publikováno v:
Medical Physics. 13:949-953
The dependence of the left ventricular ejection fraction calculation on the background correction in gated cardiac blood pool studies is examined by analyzing a simple cardiac model. It is shown that the ejection fraction is relatively insensitive to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::192e6811d0a17c59dcbcc58591b0186e
https://doi.org/10.1118/1.595824
https://doi.org/10.1118/1.595824
Publikováno v:
Physics in Medicine and Biology. 30:207-215
Non-invasive radioisotope cardiographic techniques have become a useful tool for studying the anatomy and function of the heart. The mathematical model described justifies the phenomenological analysis of pulmonary time-activity histograms and was in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6fc2c83444b0ea2687d9e61825ad7a27
https://doi.org/10.1088/0031-9155/30/3/001
https://doi.org/10.1088/0031-9155/30/3/001
Publikováno v:
Nuklearmedizin. 16:13-17
SummaryIn this paper a new method of using 81mKr for the measurement of specific absolute regional lung ventilation is described. Experimental data suitable for the calculation of quantitative regional ventilation are provided using an adequate respi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16c77e907b5b7e4266f514c44bb34da7
https://doi.org/10.1055/s-0037-1620600
https://doi.org/10.1055/s-0037-1620600
Publikováno v:
Medical physics. 16(1)
The aim of this paper is to present linearity studies and quality control charts for changes in the computed tomography (CT) number of water and contrast scales for two CT scanners over one year. Linear regression relates the attenuation coefficient
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::b53a08d4d550e2318d00e084125da56d
https://pubmed.ncbi.nlm.nih.gov/2921968
https://pubmed.ncbi.nlm.nih.gov/2921968
Publikováno v:
Physics in medicine and biology. 22(5)
A lung model taking into account essentially the same assumptions as Winlove et al. (1975) and introducing the reduction of the concentration of tracer in the lung due to radioactive decay is derived. Using a computerized gamma camera and the model i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d90c7ce39324fa6df737f01740ea8a20
https://pubmed.ncbi.nlm.nih.gov/909933
https://pubmed.ncbi.nlm.nih.gov/909933
Publikováno v:
Physics in medicine and biology. 25(2)
A mathematical lung ventilation model for radioactive tracer tidal breathing is developed on the basis of the previously established simple mathematical lung model for quantitative regional ventilation measurements. In the present model, the periodic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1942d3f964fe51ed4e65cfac0ba5931
https://pubmed.ncbi.nlm.nih.gov/7384215
https://pubmed.ncbi.nlm.nih.gov/7384215
Autor:
J. Nosil, P. McOrmond
Publikováno v:
SPIE Proceedings.
An iterative method for the determination of the start and end of the tracer flow through a compartment was developed and used to create a digital image of the compartment of interest. This digital image was then used to select a region-of-interest c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::973d336e11a14ff0b2d50f58524482dd
https://doi.org/10.1117/12.958218
https://doi.org/10.1117/12.958218