Search Results - "Clegg, S T"

Pulsatile blood flow effects on temperature distribution and heat transfer in rigid vessels by Craciunescu, O I, Clegg, S T

“…The effect of blood velocity pulsations on bioheat transfer is studied. A simple model of a straight rigid blood vessel with unsteady periodic flow is…”
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Electromagnetic thermal therapy power optimization for multiple source applicators by Das, S K, Clegg, S T, Samulski, T V

“…The optimization of power deposition for electromagnetic (EM) thermal therapy is investigated. Several goal or objective functions are examined using a…”
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Magnetic resonance thermometry during hyperthermia for human high-grade sarcoma by Carter, D L, MacFall, J R, Clegg, S T, Wan, X, Prescott, D M, Charles, H C, Samulski, T V

“…To determine the feasibility of measuring temperature noninvasively with magnetic resonance imaging during hyperthermia treatment of human tumors. The proton…”
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Dynamic contrast-enhanced MRI and fractal characteristics of percolation clusters in two-dimensional tumor blood perfusion by Craciunescu, O I, Das, S K, Clegg, S T

“…Dynamic contrast-enhanced magnetic resonance imaging (DE-MRI) of the tumor blood pool is used to study tumor tissue perfusion. The results are then analyzed…”
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Sensitivity of hyperthermia trial outcomes to temperature and time: implications for thermal goals of treatment by Oleson, J R, Samulski, T V, Leopold, K A, Clegg, S T, Dewhirst, M W, Dodge, R K, George, S L

“…In previous work we have found that the cumulative minutes of treatment for which 90% of measured intratumoral temperatures (T90) exceeded 39.5 degrees C was…”
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Verification of a hyperthermia model method using MR thermometry by Clegg, S T, Das, S K, Zhang, Y, Macfall, J, Fullar, E, Samulski, T V

“…Simulation of hyperthermia induced power and temperature distributions is becoming generally accepted and finding its way into clinical hyperthermia…”
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Perturbations in hyperthermia temperature distributions associated with counter-current flow: numerical simulations and empirical verification by Craciunescu, O.I., Samulski, T.V., MacFall, J.R., Clegg, S.T.

“…Two numerical techniques are used to calculate the effect of large vessel counter-current flow on hyperthermic temperature distributions. One is based on the…”
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Reconstruction of experimental hyperthermia temperature distributions: application of state and parameter estimation by Clegg, S T, Roemer, R B

“…Subsets of data from spatially sampled temperatures measured in each of nine experimental heatings of normal canine thighs were used to test the feasibility of…”
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Estimation of cell survival in tumours heated to nonuniform temperature distributions by Rosner, G L, Clegg, S T, Prescott, D M, Dewhirst, M W

“…A stochastic model describing the probability of cell survival as a function of thermal exposure was developed and fit to data arising from studies of CHO cell…”
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Hyperthermia treatment planning and temperature distribution reconstruction: a case study by Clegg, S T, Das, S K, Fullar, E, Anderson, S, Blivin, J, Oleson, J R, Samulski, T V

“…While a great deal of effort has been applied toward solving the technical problems associated with modelling clinical hyperthermia treatments, much of that…”
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Simulation of electromagnetically induced hyperthermia: a finite element gridding method by Das, S K, Clegg, S T, Anscher, M S, Samulski, T V

“…A finite element gridding method for simulating electromagnetically (EM) induced hyperthermia is presented. The method uses patient CT data as its primary…”
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Experimental evaluation of the thermal properties of two tissue equivalent phantom materials by Craciunescu, O I, Howle, L E, Clegg, S T

“…Tissue equivalent radio frequency (RF) phantoms provide a means for measuring the power deposition of various hyperthermia therapy applicators. Temperature…”
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Computational techniques for fast hyperthermia temperature optimization by Das, Shiva K., Clegg, Scott T., Samulski, Thaddeus V.

“…Hyperthermia temperature optimization involves arriving at a temperature distribution which minimizes a stated goal function, the goal function having a…”
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Estimating three-dimensional temperature fields during hyperthermia: studies of the optimal regularization parameter and time sampling period by Liauh, C T, Clegg, S T, Roemer, R B

“…During hyperthermia therapy it is desirable to know the entire temperature field in the treatment region. However, accurately inferring this field from the…”
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Application of new technology in clinical hyperthermia by Samulski, T V, Clegg, S T, Das, S, MacFall, J, Prescott, D M

“…Two areas of technical progress related to hyperthermic oncology are presented: (1) numerical modelling of absorbed power and temperature distributions; and…”
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Inverse techniques in hyperthermia: a sensitivity study by Clegg, S.T., Samulski, T.V., Murphy, K.A., Rosner, G.L., Dewhirst, M.W.

“…Numerical modeling methods and hyperthermia treatment temperature measurements have been used together to reconstruct steady-state tumor temperature…”
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A comparative evaluation of unconstrained optimization methods applied to the thermal tomography problem by Clegg, S T, Roemer, R B

“…In cancer hyperthermia treatments, it is important to be able to predict complete tissue temperature fields from sampled temperatures taken at the limited…”
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Preliminary studies of interstitial hyperthermia using hot water by Schreier, K, Budihna, M, Lesnicar, H, Handl-Zeller, L, Hand, J W, Prior, M V, Clegg, S T, Brezovich, I A

“…A hot water interstitial hyperthermia unit was used to heat normal tissue in the thighs of rabbits and pigs. A 4 x 4 array of metal needles or plastic tubes…”
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The effect of hydralazine dose on blood perfusion changes during hyperthermia by Roemer, R B, Forsyth, K, Oleson, J R, Clegg, S T, Sim, D A

“…Experiments were performed to determine the dose-related effects of the intravenous administration of a vasodilator (hydralazine) on normal muscle blood…”
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A Study of the Effect of Sensor Placement and Perfusion Pattern Variations on Thermal Tomography Solutions in Hyperthermia by Clegg, S. T., Roemer, R. B.

“…The ability to predict complete temperature profiles from temperature measurements at a few locations is an important and difficult problem in cancer…”
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