Search Results - "Shahnazi, K"

Influence of beam efficiency through the patient-specific collimator on secondary neutron dose equivalent in double scattering and uniform scanning modes of proton therapy by Hecksel, D., Anferov, V., Fitzek, M., Shahnazi, K.

“…Purpose: Conventional proton therapy facilities use double scattering nozzles, which are optimized for delivery of a few fixed field sizes. Similarly, uniform…”
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SU‐E‐T‐35: Extracting a Neutron Dose Using Only TLDs (Thermoluminescent Detectors) by Dy, A, Shahnazi, K, Klein, S

“…Purpose: To test the use of TLDs for out‐of‐field neutron measurements and demonstrate the calibration and calculations necessary to extract a neutron dose by…”
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SU‐E‐T‐293: The Potential Application of High Energy Proton Beam‐Induced Positron for PET Imaging Technique by Barimah, E Kumi, Shahnazi, K, Keppel, C

“…Purpose: An existing nuclear interaction cross‐section of a positron emitter was used to predict range accuracy of proton beams and cross section of the…”
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SU‐E‐T‐762: Dose Perturbation Studies Due to Prostate Seed Implants in Proton Uniform Scanned Beams by Nazaryan, V, DiGennaro, J, Shahnazi, K, Keppel, C

“…Purpose: To quantify dose perturbation in uniform scanned proton radiotherapy when used as a boost therapy following prostate seed implant. By comparing the…”
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Proton Beam versus IMRT for Postoperative Radiotherapy in Completely Resected IIIA Non-small Cell Lung Cancer by Milby, A, Teo, K, Shahnazi, K, Rengan, R

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Calibration of a proton beam energy monitor by Moyers, M. F., Coutrakon, G. B., Ghebremedhin, A., Shahnazi, K., Koss, P., Sanders, E.

“…Delivery of therapeutic proton beams requires an absolute energy accuracy of ± 0.64 to 0.27 MeV for patch fields and a relative energy accuracy of ± 0.10 to…”
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SU‐FF‐T‐459: The Effect of Proton Therapy Beam Scanning Pattern Size On Secondary Neutron Dose Equivalent by Hecksel, D, Anferov, V, Shahnazi, K, Fitzek, M

“…Purpose: One way to deliver a proton therapy beam is to actively scan a uniform dose across a treatment field using a fast scanning magnet. In this study, we…”
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SU‐E‐T‐146: Uncertainty of Stopping Powers of Tissue Equivalent Materials in Uniformly Scanned Proton Beam by Butuceanu, C, Athar, B, Baillie, N, Duvvuri, S, Keppel, C, Lee, T, Nazaryan, V, Shahnazi, K

“…Purpose: To quantify uncertainties associated with the extraction of CT HU to stopping power conversion curve for tissue equivalent materials in uniformly…”
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SU‐E‐T‐227: Patient Treatment Quality Assurance for a Uniformly Scanned Proton Therapy Beam by Baillie, N, Lee, T, Duvvuri, S, Shahnazi, K, Athar, B, Long, C, Butuceanu, C, Nazaryan, V, Keppel, C

“…Purpose: To describe the main quality assurance (QA) procedures undertaken at the Hampton University Proton Therapy Institute (HUPTI) in preparation for…”
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SU‐GG‐T‐265: Stopping Power for Tissue Equivalent Materials and Hounsfield Numbers for Proton Radiation Treatment Planning: Calculation and Measurements by Ayan, A, Ainsley, C, Shahnazi, K, Garver, E, Both, S, Oliver, K, McDonough, J

“…Purpose: To generate a proton stopping power calibration curve from tissue equivalent materials combined with Hounsfield Unit (HU) values measured by an in…”
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SU‐GG‐T‐596: Monitor Unit Verification of Proton Scattering Beam Using a Generic Beam Data by Zhu, T, Shen, J, Shahnazi, K, Slopsema, R, Both, S, McDonough, J

“…Purpose: We have developed an empirical algorithm to calculate patient specific monitor unit (MU) for Proton Scattering Beams. We examine the accuracy of MU…”
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Organ Displacement for Proton Radiotherapy by Jesseph, J.M, Shahnazi, K, Fitzek, M, Chang, A, Thornton, A

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SU‐FF‐T‐328: Dose Perturbation and Range Shift with High‐Z Medium in Proton Beam by Das, I, Nichiporov, D, Moskvin, V, Shahnazi, K, Fanelli, L, Fitzek, M, Johnstone, P

“…Purpose: Treatment planning for proton beams requires accurate CT numbers to correlate with electron densities that define the proton range. When high atomic…”
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SU‐FF‐T‐454: Impact of CT Number and Electron Density in Proton Dose Distribution by Kuros‐Zolnierczuk, J, Das, I, Shahnazi, K, Tasson, A, Allgower, C

“…Purpose: The dosimetric impact of different CT number to electron density calibrations used in proton beam treatment planning with emphasis on the dose…”
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SU‐FF‐T‐255: Transmission of a Passive Double‐Scattered Proton Beam Through Brass by Pack, D, Shahnazi, K, Allen, B, Fitzek, M, Tasson, A, Reed, R

“…Purpose: To measure the depths reached in water by passive double‐scattered proton beams of three different energies after their transmission through various…”
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SU‐FF‐T‐462: Treatment of Retinoblastoma Using Different Proton Delivery Methods: Scattering, Rectangular Scanning, and Circular Scanning by Shahnazi, K, Chang, A, Anferov, V, Hecksel, D, Thornton, A, Moyers, M, Fitzek, M

“…Purpose: The high risk of radiation induced malignancy in retinoblastoma with conventional radiotherapy makes treatment with proton beams advantageous since it…”
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SU‐FF‐T‐456: A Comparison of Cysto‐Conray II to Readi‐Cat 2 Contrast Material for Use in Rectal Balloons During Proton Therapy by Tasson, A, Fitzek, M, Shahnazi, K, Simmons, J, Simoneaux, V, Speights, D, Sullivan‐Dickey, M, Thornton, A, Wallace, D

“…Purpose: In our clinic, a rectal balloon filled with contrast is used to fixate and localize the prostate during proton treatments. We have traditionally used…”
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Dosimetric Comparison of Protons and Photons for Stereotactic Body Radiation Therapy for Lesions Near the Chest Wall by Brabham, J.G, Shahnazi, K, Allgower, C, Fitzek, M.M, Cardenes, H.R, Fakiris, A.J, Ewing, M.E, Das, I.J

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Introducing New Technology into the Clinic: The First Year of Experience in Proton Therapy with a Uniform Scanning System by Fitzek, M.M, Thornton, A.F, Chang, A, Shahnazi, K, Sullivan, M, Wolanski, M, Allgower, C, Anferov, V, Nichiporov, D, Derenchuk, V

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Issues in Proton Computed Tomography by Sadrozinski, H.F.-W., Bashkirov, V., Bruzzi, M., Johnson, L.R., Keeney, B., Ross, G., Schulte, R.W., Seiden, A., Shahnazi, K., Williams, D.C., Zhang, L.

“…We report progress on a feasibility study of Proton Computed Tomography and Proton Transmission Radiography for applications in treatment planning and patient…”
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