Search Results - "SPYROU, N. M"

Determination of cadmium and zinc in Alzheimer's brain tissue using Inductively Coupled Plasma Mass Spectrometry by Panayi, A.E., Spyrou, N.M., Iversen, B.S., White, M.A., Part, P.

“…In this work, brain tissue was taken from Alzheimer's Disease (AD) subjects ( n=11), ‘normal’ subjects ( n=10) and from subjects with senile involutive…”
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Monte Carlo study of photoneutron production in the Varian Clinac 2100C linac by Ma, A., Awotwi-Pratt, J., Alghamdi, A., Alfuraih, A., Spyrou, N. M.

“…Medical linear accelerators (linacs) are used extensively in modern radiotherapy for their flexibility and versatility. As the treatment regime moves from…”
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Correction for scatter in 3D brain PET using a dual energy window method by Grootoonk, S, Spinks, T J, Sashin, D, Spyrou, N M, Jones, T

“…A method for scatter correction using dual energy window acquisition has been developed and implemented on data collected with a brain-PET tomograph operated…”
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Performance of triple coincidence imaging as an addition to dedicated PET by Abuelhia, Elfatih, Kacperski, K., Kafala, S., M Spyrou, N.

“…In this work, we investigate the performance of semiconductor detectors imaging capabilities in three-photon annihilation processes in order to combine this…”
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Glass beads and Ge-doped optical fibres as thermoluminescence dosimeters for small field photon dosimetry by Jafari, S M, Alalawi, A I, Hussein, M, Alsaleh, W, Najem, M A, Hugtenburg, R P, Bradley, D A, Spyrou, N M, Clark, C H, Nisbet, A

“…An investigation has been made of glass beads and optical fibres as novel dosimeters for small-field photon radiation therapy dosimetry. Commercially available…”
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Study of gamma-radiation-induced optical effects in Ge–Se–Cd for possible industrial dosimetric applications by Amin, G.A.M., Spyrou, N.M.

“…The effect of 60Co γ-irradiation on the optical properties of the amorphous chalcogenide semiconductor, Ge 14Se 71Cd 15 is studied. γ-radiation-induced…”
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Energy response of glass bead TLDs irradiated with radiation therapy beams by Jafari, S.M., Jordan, T.J., Hussein, M., Bradley, D.A., Clark, C.H., Nisbet, A., Spyrou, N.M.

“…Glass beads are a novel TL dosimeter in radiotherapy. An important characteristic of TL dosimeters is their energy response, especially when intended for use…”
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No effect of glucagon-like peptide-1 on short-term satiety and energy intake in man by Long, S. J., Sutton, J. A., Amaee, W. B., Giouvanoudi, A., Spyrou, N. M., Rogers, P. J., Morgan, L. M.

“…Centrally administered glucagon-like peptide-1 (GLP-1) inhibits feeding in fasted rats, but its role in human satiety has been largely unexplored. The present…”
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The physical characteristics of the 15 MV Varian Clinac 2100C unflattened beam by Najem, MA, Spyrou, N M, PodolyA!k, Z, Abolaban, F A

“…A 15 MV photon beam of a Varian Clinac 2100C medical linear accelerator operating with and without a flattening filter was simulated using the Monte Carlo code…”
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Trace elements in drinking and groundwater samples in Southern Nigeria by Asubiojo, O.I., Nkono, N.A., Ogunsua, A.O., Oluwole, A.F., Ward, N.I., Akanle, O.A., Spyrou, N.M.

“…The levels of Al, Sn, Cs, Rb, Sr, Br, Cr, Mo, Co, Ba, Cu, Zn, Cd, Pb, Mn, Se, As, V and Ni were determined in drinking water supplies (public taps, domestic…”
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Neutron-fluence-to-dose conversion coefficients in an anthropomorphic phantom by Alghamdi, A. A., Ma, A., Tzortzis, M., Spyrou, N. M.

“…A set of fluence-to-effective-dose conversion coefficients has been calculated for neutrons with energies <20 MeV using a high-resolution anthropomorphic…”
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Epigastric electrical impedance for the quantitative determination of the gastric acidity by Giouvanoudi, A C, Spyrou, N M

“…Electrical impedance measurements have been used by scientists since the 1980s to investigate the gastric function. In this work, these measurements were…”
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Assessment of the Lake Gendabi salt for trace elements and toxic heavy metals by energy dispersive X-ray fluorescence spectrometry by Lugendo, I., Mohammed, N. K., Mussa, L. M., Spyrou, N. M.

“…This study has analyzed samples of salts from Lake Gendabi, located in the northern part of Tanzania for metal contamination using the EDXRF spectrometry. The…”
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Radioanalytical and imaging techniques: Challenges and opportunities in biomedical applications by Spyrou, N. M.

“…Where human health worldwide is under threat, radioanalytical and imaging scientists are expected to make significant difference and contribution. Diabetes,…”
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Physiological interpretation of electrical impedance epigastrography measurements by Giouvanoudi, A, Amaee, W B, Sutton, J A, Horton, P, Morton, R, Hall, W, Morgan, L, Freedman, M R, Spyrou, N M

“…Measurement of the electrical impedance of the gastric region is carried out with the epigastrograph. This generates and applies alternating current around the…”
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Response of a lithium gadolinium borate scintillator in monoenergetic neutron fields by Williams, A. M., Beeley, P. A., Spyrou, N. M.

“…Accurate estimation of neutron dose requires knowledge of the neutron energy distribution in the working environment. Existing neutron spectrometry systems,…”
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Trace elemental analysis of rice grown in two regions of Tanzania by Mohammed, N. K., Spyrou, N. M.

“…The concentrations of elements in rice, locally cultivated in two regions of Tanzania (Mbeya and Morogoro), were determined using Instrumental Neutron…”
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Preliminary investigations of two types of silica-based dosimeter for small-field radiotherapy by Alalawi, Amani I., Jafari, S.M., Najem, M.A., Alsaleh, W., Clark, C.H., Nisbet, A., Abolaban, F., Hugtenburg, R.P., Hussein, M., Alzimami, Khalid S., Bradley, D.A., Spyrou, N.M.

“…Two thermoluminescent dosimeters (SiO2–GeO2 doped fibres and glass beads (GB)) were used to measure small photon field doses and compared against GAFCHROMIC…”
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Determination of depth of a radionuclide source in a tissue equivalent phantom by Aldousari, H., Alkhorayef, M., Highgate, D. J., Kacperek, A., Spyrou, N. M.

“…Hydrophilic materials which refer to a group of cross-linked polymers originally developed in the 60s to produce soft contact lenses are characterised by an…”
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Variance in parametric images: direct estimation from parametric projections by Maguire, R P, Spyrou, N M, Leenders, K L

“…Recent work has shown that it is possible to apply linear kinetic models to dynamic projection data in PET in order to calculate parameter projections. These…”
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