Výsledky vyhledávání - "R. M. Verdaasdonk"

How flatbed scanners upset accurate film dosimetry

Autor: Henk Huizenga, R M Verdaasdonk, S. Heukelom, L J van Battum

Publikováno v: Physics in Medicine and Biology, 61, 2, pp. 625-49
Physics in Medicine and Biology, 61, 625-49
Physics in Medicine and Biology, 61(2), 625-649. IOP Publishing Ltd.
van Battum, L J, Huizenga, H, Verdaasdonk, R M & Heukelom, S 2016, ' How flatbed scanners upset accurate film dosimetry ', Physics in Medicine and Biology, vol. 61, no. 2, pp. 625-649 . https://doi.org/10.1088/0031-9155/61/2/625

Item does not contain fulltext Film is an excellent dosimeter for verification of dose distributions due to its high spatial resolution. Irradiated film can be digitized with low-cost, transmission, flatbed scanners. However, a disadvantage is their

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ad2055bcbffd7369ea36778f808d69b
https://doi.org/10.1088/0031-9155/61/2/625

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Do mathematical model studies settle the controversy on the origin of cardiac synchronous trans-thoracic electrical impedance variations? A systematic review

Autor: Th. J. C. Faes, A de Sitter, R M Verdaasdonk

Publikováno v: de Sitter, A, Verdaasdonk, RM & Faes, T J C 2016, ' Do mathematical model studies settle the controversy on the origin of cardiac synchronous trans-thoracic electrical impedance variations? A systematic review ', Physiological Measurement, vol. 37, no. 9, pp. R88-R108 . https://doi.org/10.1088/0967-3334/37/9/R88
Physiological Measurement, 37(9), R88-R108. IOP Publishing Ltd.

Impedance cardiography (ICG) is a method to evaluate cardiac-stroke volume and cardiac-output by measuring the cardiac-synchronous changes in the dynamic trans-thoracic electrical impedance (ΔZ). Clinical evaluations on the accuracy of ICG showed va

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::681d686859b4dbb0ec705a9ca02ef1c7
https://pubmed.ncbi.nlm.nih.gov/27531544

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Endovenous laser ablation: an experimental study on the mechanism of action

Autor: B.C.V.M. Disselhoff, Frans L. Moll, A I Rem, R M Verdaasdonk, D.J. der Kinderen

Publikováno v: Phlebology: The Journal of Venous Disease. 23:69-76

Objectives The aim of this experimental study was to investigate the mechanism of action of endovenous laser ablation (EVLA) using an 810-nm diode laser. Methods We compared intermittent and continuous delivery of laser energy and studied the absorpt

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cf653c27f6d59ca2bf2c5211b0d34497
https://doi.org/10.1258/phleb.2007.007038

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Long-term reendothelialization of excimer laser—assisted nonocclusive anastomoses compared with conventionally sutured anastomoses in pigs

Autor: Marcel M M Bulder, Ester L G E Koedam, Bart van der Zwan, R. M. Verdaasdonk, Sanne Kleinveld, Cornelis A.F. Tulleken, Hans D Meelduk, Henk Johan N. Streefkerk, Rik J. Mansvelt Beck

Publikováno v: Journal of Neurosurgery. 103:328-336

Object. In contrast to conventional anastomosis methods, the excimer laser—assisted nonocclusive anastomosis (ELANA) technique involves a platinum ring and intima—adventitia apposition with a rim of medial and adventitial layers exposed to the bl

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https://doi.org/10.3171/jns.2005.103.2.0328

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Laser-assisted neuroendoscopy using a neodymium-yttrium aluminum garnet or diode contact laser with pretreated fiber tips

Autor: C. F. P. Van Swol, W. P. Vandertop, R. M. Verdaasdonk

Publikováno v: Vandertop, W P, Verdaasdonk, R M & van Swol, C F 1998, ' Laser-assisted neuroendoscopy using a neodymium-yttrium aluminum garnet or diode contact laser with pretreated fiber tips ', Journal of Neurosurgery, vol. 88, no. 1, pp. 82-92 . https://doi.org/10.3171/jns.1998.88.1.0082
Journal of neurosurgery, 88(1), 82-92. American Association of Neurological Surgeons
Journal of Neurosurgery, 88(1), 82-92. American Association of Neurological Surgeons

Object. Although lasers have proved to be valuable in neuroendoscopy, surgeons are still not comfortable using high-energy laser endoscopic probes in proximity to vital structures such as the basilar artery in third ventriculostomy. The authors have

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::83fbe1cf6e240a4ba95ca934987fa329
https://doi.org/10.3171/jns.1998.88.1.0082

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Objective non-invasive technique for quantification of superficial varicose veins

Autor: Herke Jan Noordmans, R de Zeeuw, C H A Wittens, R. M. Verdaasdonk

Publikováno v: Phlebology: The Journal of Venous Disease. 20:60-62

Introduction: Non-invasive methods for imaging varicose veins allow quantification and evaluation of venous diseases. This paper will describe a technique to visualize superficial (subdermal) varicose veins using digital infrared imaging and analysis

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https://doi.org/10.1258/0268355054069197

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Imaging the seizure during surgery with a hyperspectral camera

Autor: R. M. Verdaasdonk, Peter C. van Rijen, Cyrille H. Ferrier, Peter H. Gosselaar, Herke Jan Noordmans, John H. G. M. Klaessens, Rowland de Roode, Frans S. S. Leijten

Publikováno v: Noordmans, H J, Ferrier, C, de Roode, R, Leijten, F, van Rijen, P, Gosselaar, P, Klaessens, J H G M & Verdaasdonk, R M 2013, ' Imaging the seizure during surgery with a hyperspectral camera ', Epilepsia, vol. 54, no. 11, pp. E150-E154 . https://doi.org/10.1111/epi.12386
Epilepsia, 54(11), E150-E154. Wiley-Blackwell

An epilepsy patient with recurring sensorimotor seizures involving the left hand every 10 min, was imaged with a hyperspectral camera during surgery. By calculating the changes in oxygenated, deoxygenated blood, and total blood volume in the cortex,

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https://pubmed.ncbi.nlm.nih.gov/24199829

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Initial Systolic Time Interval (ISTI) as a Predictor of Intradialytic Hypotension (IDH)

Autor: J. H. Meijer, R. M. Verdaasdonk, J. D. Biesheuvel, M. G. Vervloet

Publikováno v: Biesheuvel, J D, Vervloet, M G, Verdaasdonk, R M & Meijer, J H 2013, ' Initial Systolic Time Interval (ISTI) as a Predictor of Intradialytic Hypotension (IDH) ', Journal of Physics: Conference Series, vol. 434, e012036 . https://doi.org/10.1088/1742-6596/434/1/012036
Journal of Physics: Conference Series, 434:e012036. IOP Publishing Ltd.

In haemodialysis treatment the clearance and volume control by the kidneys of a patient are partially replaced by intermittent haemodialysis. Because this artificial process is performed on a limited time scale, unphysiological imbalances in the flui

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https://doi.org/10.1088/1742-6596/434/1/012036

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The modified excimer laser-assisted high-flow bypass operation

Autor: R. M. Verdaasdonk, Willem P.Th.M. Mali, Rick J. Mansvelt Beck, Cornelis A.F. Tulleken

Publikováno v: Surgical Neurology. 46:424-429

BACKGROUND To make high-flow revascularization of the brain possible, we developed an anastomosis technique that obviates temporary occlusion of the recipient artery. After connecting donor and recipient vessels, an Excimer laser catheter, introduced

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https://doi.org/10.1016/s0090-3019(96)00096-1

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