Search Results - "Wilderman, S"

Investigation of effect of variations in bone fraction and red marrow cellularity on bone marrow dosimetry in radio-immunotherapy by Wilderman, S J, Roberson, P L, Bolch, W E, Dewaraja, Y K

“…A method is described for computing patient-specific absorbed dose rates to active marrow which accounts for spatial variation in bone volume fraction and…”
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Method for Fast CT/SPECT-Based 3D Monte Carlo Absorbed Dose Computations in Internal Emitter Therapy by Wilderman, S. J., Dewaraja, Y. K.

“…The DPM (Dose Planning Method) Monte Carlo electron and photon transport program, designed for fast computation of radiation absorbed dose in external beam…”
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SU‐E‐J‐186: Automated SPECT‐Based Segmentation for Quality Assurance of CT‐Delineated Tumor Volumes for 131I Tositumomab Therapy of Non‐Hodgkins Lymphoma by Thorwarth, R, Dewaraja, Y, Wilderman, S, Kaminski, M, Avram, A, Roberson, P

“…Purpose: CT segmentation of tumor volumes suffers from many error sources which can impact the calculation of absorbed dose and 4D bio‐effect modeling…”
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DPM, a fast, accurate Monte Carlo code optimized for photon and electron radiotherapy treatment planning dose calculations by Sempau, J, Wilderman, S J, Bielajew, A F

“…A new Monte Carlo (MC) algorithm, the 'dose planning method' (DPM), and its associated computer program for simulating the transport of electrons and photons…”
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SU‐FF‐T‐455: Methodology to Incorporate the BED and EUD in Patient‐Specific 3‐Dimensional Dosimetry for Non‐Hodgkin's Lymphoma Patients Targeted with 131I Tositumomab Therapy by Amro, H, Wilderman, S, Dewaraja, Y, Roberson, P

“…Purpose: The efficacy of targeted radionuclide therapy depends on the uniformity of radionuclide distribution within the target volume as well as on the…”
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Accurate dosimetry in I-131 radionuclide therapy using patient-specific, 3-dimensional methods for SPECT reconstruction and absorbed dose calculation by Dewaraja, Y K, Wilderman, S J, Ljungberg, Michael, Koral, K F, Zasadny, K, Kaminiski, M S

“…I-131 radionuclide therapy studies have not shown a strong relationship between tumor absorbed dose and response, possibly due to inaccuracies in activity…”
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SU‐GG‐T‐409: Equivalent Uniform Dose Calculation for I‐131 Tositumomab Therapy Including the Cold Protein Effect by Roberson, P, Amro, H, Wilderman, S, Dewaraja, Y

“…Purpose: Individualized treatment planning may benefit from equivalent uniform dose (EUD) techniques to help correlate ‘dose’ with objective patient outcome…”
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Improved modeling of system response in list mode EM reconstruction of Compton scatter camera images by Wilderman, S.J., Fessler, J.A., Clinthorne, N.H., LeBlanc, J.W., Rogers, W.L.

“…An improved List Mode EM method for reconstructing Compton scattering camera images has been developed. First, an approximate method for computation of the…”
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First coincidences in pre-clinical Compton camera prototype for medical imaging by Studen, A., Burdette, D., Chesi, E., Cindro, V., Clinthorne, N.H., Dulinski, W., Fuster, J., Han, L., Kagan, H., Lacasta, C., Llosá, G., Marques, A.C., Malakhov, N., Meier, D., Mikuž, M., Park, S.J., Roe, S., Rogers, W.L., Steinberg, J., Weilhammer, P., Wilderman, S.J., Zhang, L., Žontar, D.

“…Compton collimated imaging may improve the detection of gamma rays emitted by radioisotopes used in single photon emission computed tomography (SPECT). We…”
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Experimental results from the C-SPRINT prototype Compton camera by LeBlanc, J.W., Clinthorne, N.H., Hua, C.-H., Nygard, E., Rogers, W.L., Wehe, D.K., Weilhammer, P., Wilderman, S.J.

“…A Compton camera is being tested for nuclear medicine applications. Our design uses a single 3 cm by 3 cm silicon pad detector as the first detector system,…”
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Development of silicon pad detectors and readout electronics for a Compton camera by Studen, A, Cindro, V, Clinthorne, N.H, Czermak, A, Dulinski, W, Fuster, J, Han, L, Jalocha, P, Kowal, M, Kragh, T, Lacasta, C, Llosá, G, Meier, D, Mikuž, M, Nygård, E, Park, S.J, Roe, S, Rogers, W.L, Sowicki, B, Weilhammer, P, Wilderman, S.J, Yoshioka, K, Zhang, L

“…Applications in nuclear medicine and bio-medical engineering may profit using a Compton camera for imaging distributions of radio-isotope labelled tracers in…”
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Fast algorithm for list mode back-projection of Compton scatter camera data by Wilderman, S.J., Rogers, W.L., Knoll, G.F., Engdahl, J.C.

“…A fast algorithm is presented for back-projection of Compton camera projection data in a list mode fashion, in which the number of operations per photon per…”
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An electronically collimated gamma camera with a parallel plate collimator for Tc-99m imaging by Uritani, A., Clinthorne, N.H., Gormley, J.E., LeBlanc, J.W., Rogers, W.L., Wehe, D.K., Wilderman, S.J.

“…We present a new idea to apply a parallel plate collimator to an electronically collimated gamma camera, to reduce the complexity of image reconstruction. Back…”
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Design and modeling of the Hybrid Portable Gamma Camera system by Smith, L.E., He, Z., Wehe, D.K., Knoll, G.F., Wilderman, S.J.

“…The combination of a mechanically-collimated camera with an electronically-collimated camera offers both the high efficiency and good angular resolution…”
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3D image reconstruction for a Compton SPECT camera model by Sauve, A.C., Hero, A.O., Rogers, W.L., Wilderman, S.J., Clinthorne, N.H.

“…Proposes a 3D image reconstruction algorithm for a 3D Compton camera being developed at the University of Michigan. The authors present a mathematical model of…”
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C-SPRINT: a prototype Compton camera system for low energy gamma ray imaging by LeBlanc, J.W., Clinthorne, N.H., Hua, C.-H., Nygard, E., Rogers, W.L., Wehe, D.K., Weilhammer, P., Wilderman, S.J.

“…An electronically-collimated imaging system is being built using pixellated, low-noise, position-sensitive silicon as the first detector, and a sodium iodide…”
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A proposed method for correcting aperture penetration in high energy slit aperture and pinhole SPECT by Wrobel, M.C., Clinthorne, N.H., Fessler, J.A., Zhang, Y., Wilderman, S.J., Rogers, W.L.

“…Aperture penetration in high energy pinhole and slit aperture SPECT results in a decrease of both resolution and contrast. At 511 keV, approximately 50% of…”
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Breast lesions: differential diagnosis using digital subtraction angiography by Watt, A C, Ackerman, L V, Windham, J P, Shetty, P C, Burke, M W, Flynn, M J, Grodinsky, C, Fine, G, Wilderman, S J

“…To evaluate its potential for differentiating benign from malignant breast lesions, digital subtraction angiography of the breast (DSAB) was performed in 23…”
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Comparison of I-131 radioimmunotherapy tumor dosimetry: unit density sphere model versus patient-specific Monte Carlo calculations by Howard, David M, Kearfott, Kimberlee J, Wilderman, Scott J, Dewaraja, Yuni K

“…High computational requirements restrict the use of Monte Carlo algorithms for dose estimation in a clinical setting, despite the fact that they are considered…”
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Accurate modeling of nuclear-medicine collimators in Monte Carlo simulation of high-energy photons by Wilderman, S.J., Dewaraja, Y., Koral, K.F.

“…Monte Carlo (MC) simulation of nuclear medicine imaging is more difficult for procedures employing 131I than for those using 99mTc because of the higher…”
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