Search Results - "Gutiérrez Alonso, N."

Comparison of initial patient setup accuracy between surface imaging and three point localization: A retrospective analysis by Stanley, Dennis N., McConnell, Kristen A., Kirby, Neil, Gutiérrez, Alonso N., Papanikolaou, Nikos, Rasmussen, Karl

“…Purpose Historically, the process of positioning a patient prior to imaging verification used a set of permanent patient marks, or tattoos, placed…”
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Dosimetric delivery validation of dynamically collimated pencil beam scanning proton therapy by Nelson, Nicholas P, Culberson, Wesley S, Hyer, Daniel E, Geoghegan, Theodore J, Patwardhan, Kaustubh A, Smith, Blake R, Flynn, Ryan T, Yu, Jen, Gutiérrez, Alonso N, Hill, Patrick M

“… Pencil beam scanning (PBS) proton therapy target dose conformity can be improved with energy layer-specific collimation. One such collimator is the dynamic…”
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Development and validation of the Dynamic Collimation Monte Carlo simulation package for pencil beam scanning proton therapy by Nelson, Nicholas P., Culberson, Wesley S., Hyer, Daniel E., Geoghegan, Theodore J., Patwardhan, Kaustubh A., Smith, Blake R., Flynn, Ryan T., Yu, Jen, Rana, Suresh, Gutiérrez, Alonso N., Hill, Patrick M.

“…Purpose The aim of this work was to develop and experimentally validate a Dynamic Collimation Monte Carlo (DCMC) simulation package specifically designed for…”
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Whole Brain Radiotherapy With Hippocampal Avoidance and Simultaneously Integrated Brain Metastases Boost: A Planning Study by Gutiérrez, Alonso N., Ph.D, Westerly, David C., M.Sc, Tomé, Wolfgang A., Ph.D, Jaradat, Hazim A., Ph.D, Mackie, Thomas R., Ph.D, Bentzen, Søren M., Ph.D., D.Sc, Khuntia, Deepak, M.D, Mehta, Minesh P., M.D

“…Purpose To evaluate the feasibility of using tomotherapy to deliver whole brain radiotherapy with hippocampal avoidance, hypothesized to reduce the risk of…”
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The dosimetric enhancement of GRID profiles using an external collimator in pencil beam scanning proton therapy by Smith, Blake R., Nelson, Nicholas P., Geoghegan, Theodore J., Patwardhan, Kaustubh A., Hill, Patrick M., Yu, Jen, Gutiérrez, Alonso N., Allen, Bryan G., Hyer, Daniel E.

“…Purpose The radiobiological benefits afforded by spatially fractionated (GRID) radiation therapy pairs well with the dosimetric advantages of proton therapy…”
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Characterization of air temperature in modern ion chambers due to phantom geometry and ambient temperature changes by Saenz, Daniel L., Kirby, Neil, Gutiérrez, Alonso N.

“…Purpose: Temperature and pressure corrections are necessary to account for the varying mass of air in the sensitive volume of a vented ionization chamber (IC)…”
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An evaluation of the stability of image‐quality parameters of Varian on‐board imaging (OBI) and EPID imaging systems by Stanley, Dennis N., Papanikolaou, Nikos, Gutiérrez, Alonso N.

“…Quality assurance (QA) of the image quality for image‐guided localization systems is crucial to ensure accurate visualization and localization of regions of…”
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Integration and dosimetric validation of a dynamic collimation system for pencil beam scanning proton therapy by Nelson, Nicholas P, Culberson, Wesley S, Hyer, Daniel E, Geoghegan, Theodore J, Patwardhan, Kaustubh A, Smith, Blake R, Flynn, Ryan T, Gutiérrez, Alonso N, Boland, Thibault, Hill, Patrick M

“…To integrate a Dynamic Collimation System (DCS) into a pencil beam scanning (PBS) proton therapy system and validate its dosimetric impact. Uncollimated and…”
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Incidence of venous thromboembolism in patients with colorectal cancer according to oncogenic status by Ortega Morán, L., García Alfonso, P., Aguilar Caballero, I., Morón García, B., Tirado Anula, V., de Toro Carmena, M., Soto Alsar, J., Gutiérrez Alonso, N., Bringas Beranek, M., Martín Jiménez, M., Muñoz Martín, A. J.

“…Background There are conflicting data regarding the role of KRAS mutation on the risk of venous thromboembolism (VTE) in colorectal cancer (CRC) patients…”
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An evaluation of the stability of image quality parameters of Elekta X‐ray volume imager and iViewGT imaging systems by Stanley, Dennis N., Rasmussen, Karl, Kirby, Neil, Papanikolaou, Nikos, Gutiérrez, Alonso N.

“…Introduction A robust image quality assurance and analysis methodology for image‐guided localization systems is crucial to ensure the accurate localization and…”
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Development of image quality assurance measures of the ExacTrac localization system using commercially available image evaluation software and hardware for image‐guided radiotherapy by Stanley, Dennis N., Papanikolaou, Nikos, Gutierrez, Alonso N.

“…Quality assurance (QA) of the image quality for image‐guided localization systems is crucial to ensure accurate visualization and localization of target…”
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On the quantification of the dosimetric accuracy of collapsed cone convolution superposition (CCCS) algorithm for small lung volumes using IMRT by Calvo, Oscar I., Gutiérrez, Alonso N., Stathakis, Sotirios, Esquivel, Carlos, Papanikolaou, Nikos

“…Specialized techniques that make use of small field dosimetry are common practice in today's clinics. These new techniques represent a big challenge to the…”
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Dosimetric evaluation of multi-pattern spatially fractionated radiation therapy using a multi-leaf collimator and collapsed cone convolution superposition dose calculation algorithm by Stathakis, Sotirios, Esquivel, Carlos, Gutiérrez, Alonso N., Shi, ChengYu, Papanikolaou, Niko

“…Purpose: In this paper, we present an alternative to the originally proposed technique for the delivery of spatially fractionated radiation therapy (GRID)…”
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Evaluation of PTW Seven29 for tomotherapy patient-specific quality assurance and comparison with ScandiDos Delta(4) by Myers, Pamela, Stathakis, Sotirios, Gutiérrez, Alonso N, Esquivel, Carlos, Mavroidis, Panayiotis, Papanikolaou, Niko

“…For routine quality assurance of helical tomotherapy plans, an alternative method, as opposed to the TomoTherapy suggested cylindrical solid water phantom with…”
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DOSIMETRIC IMPACT OF DAILY SETUP VARIATIONS DURING TREATMENT OF CANINE NASAL TUMORS USING INTENSITY-MODULATED RADIATION THERAPY by DEVEAU, MICHAEL A, GUTIÉRREZ, ALONSO N, MACKIE, THOMAS R, TOMÉ, WOLFGANG A, FORREST, LISA J

“…Intensity-modulated radiation therapy (IMRT) can be employed to yield precise dose distributions that tightly conform to targets and reduce high doses to…”
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Clinical Evaluation of an Immbolization System for Stereotactic Body Radiotherapy Using Helical Tomotherapy by Gutiérrez, Alonso N., Ph.D, Stathakis, Sotirios, Ph.D, Crownover, Richard, M.D., Ph.D, Esquivel, Carlos, Ph.D, Shi, Chengyu, Ph.D, Papanikolaou, Niko, Ph.D

“…Abstract In this study, a clinical evaluation of the Body Pro-Lok™ System combined with the TomoTherapy megavoltage computed tomography (MVCT) was performed…”
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Development and long‐term stability of a comprehensive daily QA program for a modern pencil beam scanning (PBS) proton therapy delivery system by Rana, Suresh, Bennouna, Jaafar, Samuel, E. James Jebaseelan, Gutierrez, Alonso N.

“…Purpose The main purpose of this study is to demonstrate the clinical implementation of a comprehensive pencil beam scanning (PBS) daily quality assurance (QA)…”
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Initial feasibility cohort of temporally modulated pulsed proton re-irradiation (TMPPR) for recurrent high-grade intracranial malignancies by La Rosa, Alonso, Fellows, Zachary, Wroe, Andrew J., Coutinho, Len, Pons, Eduardo, McAllister, Nicole C., Tolakanahalli, Ranjini, Kutuk, Tugce, Hall, Matthew D., Press, Robert H., McDermott, Michael W., Odia, Yazmin, Ahluwalia, Manmeet S., Mehta, Minesh P., Gutierrez, Alonso N., Kotecha, Rupesh

“…Recurrent high-grade intracranial malignancies have a grim prognosis and uniform management guidelines are lacking. Re-irradiation is underused due to concerns…”
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Induction Chemotherapy and Ablative Stereotactic Magnetic Resonance Image-Guided Adaptive Radiation Therapy for Inoperable Pancreas Cancer by Chuong, Michael D., Herrera, Roberto, Kaiser, Adeel, Rubens, Muni, Romaguera, Tino, Alvarez, Diane, Kotecha, Rupesh, Hall, Matthew D., McCulloch, James, Ucar, Antonio, DeZarraga, Fernando, Aparo, Santiago, Joseph, Sarah, Asbun, Horacio, Jimenez, Ramon, Narayanan, Govindarajan, Gutierrez, Alonso N., Mittauer, Kathryn E.

“…BackgroundRadiation therapy (RT) dose for inoperable pancreatic ductal adenocarcinoma (PDAC) has historically been non-ablative to avoid injuring…”
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Case report: Intrafraction dose-guided tracking for gastrointestinal organ-at-risk isotoxicity delivery on an MR-guided radiotherapy system by Yarlagadda, Sreenija, Weiss, Yonatan, Chuong, Michael David, Bassiri, Nema, Gutierrez, Alonso N, Kotecha, Rupesh, Mehta, Minesh P, Mittauer, Kathryn Elizabeth

“…In the current era of high-precision radiation therapy, real-time magnetic resonance (MR)-guided tracking of the tumor and organs at risk (OARs) is a novel…”
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