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Showing 1 to 20 of 21 for “"anthropomorphic phantom"”.

  1. Implementation of An Anthropomorphic Phantom For The Evaluation of Proton Therapy Treatment Procedures

    Grant, Ryan L2010

    … thermoluminescent dosimeters (TLD) and mailable anthropomorphic phantoms. Currently, there are no heterogeneous phantoms that have been commissioned to evaluate proton therapy. It was hypothesized that an anthropomorphic pelvis phantom can be designed to audit treatment procedures (patient …

    uthsc Repository record

  2. A Dosimetric Study of a VMAT Head and Neck Treatment Plan Using TLDs and Gafchromic Films

    Aldaais, Ebtisam Abdullatif

    … EBT2 Gafchromic films have been used in side an anthropomorphic phantom for this dosimetric study. These two dosimeters have been used to determine the dose in specific points and to compare the results with the computer plan. Also, EBT2 films have been used to study the isodose distribution on …

    south-carolina Repository record

  3. A new standard in testing mattresses for use in x-ray imaging : developing, validating and using a novel method to test x-ray mattresses for pressure ulcer development, radiation dosimetry and image quality

    Alresheedi, N2020

    … has three aims (1). to develop and validate an anthropomorphic-phantom-based method of assessing X-ray table mattress IP as an index of mattress performance; (2) to assess X-ray table mattress pressure redistribution properties; and (3) to evaluate mattress radiation attenuation characteristics …

    salford Repository record

  4. TASK SPECIFIC EVALUATION METHODOLOGY FOR CLINICAL FULL FIELD DIGITAL MAMMOGRAPHY

    Liu, Haimo2012

    … blur and anti-scatter grid performance using an anthropomorphic phantom. Additionally we intend to provide a limited evaluation of the effects that image processing in clinical FFDM has in signal detectability. <bold>Methodology</bold>: We explored different strategies and a variety of …

    maryland Repository record

  5. Development of A Remote Dosimetric Audit Framework For Carbon Therapy

    Taylor, Paige, <p>0000-0001-9720-8059</p>2023

    … and combine these tools to create an end-to-end anthropomorphic phantom audit. The absorbed dose corrections factors for TLD and OSLD will be characterized in a therapeutic carbon beam, as will a variety of plastics typically used in phantom dose measurements. An anthropomorphic phantom, …

    uthsc Repository record

  6. In-Vivo Ct Dosimetry During Virtual Colonoscopy

    Mueller, Jonathon W2011

    … with TLDs during simulated VC within a modified anthropomorphic phantom configured to represent three sizes of patients undergoing VC. The measured rectal doses decreased in an exponential manner with increasing phantom effective diameter, with R<sup>2</sup>=0.993 for the exponential regression …

    uthsc Repository record

  7. Development of A Ct Metal Artifact Management Algorithm For Proton Therapy Planning (Ampp) For Head and Neck Cancer Patients

    Branco, Daniela, <p><a href="https://www.orcid.org/0000-0002-1194-2234" target="_blank" title="https://www.orcid.org/0000-0002-1194-2234 ">0000-0002-1194-2234</a></p>2020

    … distortion and HU accuracy) using a geometrical phantom simulating a HN patient with dental fillings. A HN anthropomorphic phantom composed of proton tissue equivalent materials, human skull, air cavities was used to perform a quantitative image quality comparison between AMPP and four major CT …

    uthsc Repository record

  8. A 64 channel 3T array coil for highly accelerated fetal imaging at 22 weeks of pregnancy

    Spatz, Mark HMassachusetts Institute of Technology2017

    … 5% better SNR in the fetal brain region of an anthropomorphic phantom and allows increasing SENSE acceleration factor from R = 4 to R = 5 in the right-left direction and R = 3 to R = 4 in the head-foot direction.

    mit Repository record

  9. Characterization of Optically Stimulated Luminescent Detectors In Photon & Proton Beams For Use In Anthropomorphic Phantoms

    Kerns, James R2010

    … assurance program for protons, and for remote anthropomorphic phantom irradiations. The OSLDs used were aluminum oxide (Al2O3:C) nanoDots from Landauer, Inc. (Glenwood, Ill.) measuring 10x10x2 mm3. A square, 20(L)x20(W)x0.5(H) cm3 piece of solid water was fabricated with pockets to allow OSLDs …

    uthsc Repository record

  10. Establishing an evidence-base for erect pelvis radiography : positioning, radiation dose and image quality

    Alzyoud, K2026

    … (Diers) and an inclinometer.Phase Two was a phantom study evaluating the potential changes to radiation dose and image quality when moving between supine and erect imaging. Phase two was undertaken using three experiments (experiment #1, experiment #2 and experiment #3). Experiment #1 …

    salford Repository record

  11. Towards Robust Radiomic Markers from Positron Emission Tomography in Cancer

    Ramlee, SyafiqUniversity of Cambridge2025

    … [18F]-FDG PET radiomic features obtained from an anthropomorphic phantom and their robustness to different acquisition and reconstruction settings. The final study evaluates the impact of harmonisation using ComBat, an approach based on empirical Bayes, on the robustness of [18F]-FDG PET radiomic …

    cambridge Repository record

  12. Radiogenic Second Cancer Risk Differences In Female Hodgkin Lymphoma Patients Treated With Proton Versus Photon Radiotherapies

    Homann, Kenneth L2014

    … with thermoluminescent dosimeters (TLD) in anthropomorphic phantom for the IMRT treatments and simulated using Monte Carlo techniques that model a passive scattering treatment nozzle and each individual patient’s anatomy and treatment setup. RSC risks were calculated using the Biological …

    uthsc Repository record

  13. Commissioning of Micro-Cube Thermoluminescent Dosimeters For Small Field Dosimetry Quality Assurance In Radiotherapy

    Luckett, Brandon, <p>0000-0003-1086-6978</p>2019

    … Further aims were to adapt IROC Houston SRS head phantoms to use TLD micro-cubes for anthropomorphic phantom quality assurance and to test this design on linac, Gamma Knife, and CyberKnife treatment delivery machines. The final aim was to use TLD micro-cubes to evaluate photon fields which are …

    uthsc Repository record

  14. Transit Dosimetry for Patient Treatment Verification with an Electronic Portal Imaging Device

    Berry, Sean Lawrence2012

    … a number of homogeneous and heterogeneous slab phantoms. A total of 33 IMRT fields were delivered to an anthropomorphic phantom. On average, 98.1% of the pixels in the dosimetric comparison between the measured and predicted transit dose images passed a 3%/3mm gamma analysis. Further validation …

    columbia-diss Repository record

  15. Estimation of risk associated to peripheral dose in patients undergoing radiotherapy treatment

    Romero Expósito, María Teresa2012

    … room, and the equivalent doses inside an anthropomorphic phantom for several irradiation conditions. This correlation model has been further extended to estimate neutron equivalent dose at specific organs in patients. Using current risk model from international organisms, estimation of the …

    sevilla Repository record

  16. CONE BEAM COMPUTED TOMOGRAPHY (CBCT) DOSIMETRY: MEASUREMENTS AND MONTE CARLO SIMULATIONS

    Kim, Sangroh2010

    … the cone beam CTDI (CTDI<sub>CB</sub>) in CT phantoms and organ dose in a 5-year-old pediatric anthropomorphic phantom. Radiochromic film was also employed to measure the axial dose profiles. A point dose method was used in the CTDI estimation.</p> <p>The BEAMnrc/EGSnrc MC system was used to …

    duke Repository record

  17. Applications of cone beam computed tomography in radiotherapy treatment planning.

    Srinivasan, Kavitha2015

    … by acquiring CBCT images of the Rando anthropomorphic phantom. An Intensity-Modulated Radiotherapy (IMRT) treatment plan was generated using both sets of reconstructed images using the Pinnacle3 treatment planning system. Planar dose distributions were extracted from both the datasets …

    adelaide Repository record

  18. A comparison of fixed tube current (FTC) and automatic tube current modulation (ATCM) CT methods for abdominal scanning : implications on radiation dose and image quality

    Alrowily, M2026

    … rotation), an adult ATOM dosimetry and abdominal anthropomorphic phantom were exposed to a series of FTC and ATCM CT protocols with variations in tube current as follows: FTC - 100, 200, 250, 300 and 400mA; ATCM - low dose+, low dose, standard, quality and high quality. The pitch factors evaluated …

    salford Repository record

  19. Evaluation of image receptor angulation during mediolateral oblique positioning for optimised pressure and area distribution in mammography

    Osmanu, M2022

    … this report is in two phases. Phase one was an anthropomorphic phantom study to establish a structured and reproducible method of using the angle of the sternum to measure the correct angle of the IR for MLO projection. An inclinometer was used to measure the sternal angle of phantom model used. …

    salford Repository record

  20. Development and Implementation of A Dynamic Heterogeneous Proton Equivalent Anthropomorphic Thorax Phantom For The Assessment of Scanned Proton Beam Therapy

    Neihart, James L2013

    … OF A DYNAMIC HETEROGENEOUS PROTON EQUIVALENT ANTHROPOMORPHIC THORAX PHANTOM FOR THE ASSESSMENT OF SCANNED PROTON BEAM THERAPY</p> <p>by</p> <p><em>James Leroy Neihart, B.S.</em></p> <p>APPROVED:</p> <p><br />______________________________<br />David Followill, Ph.D.<br /><br /></p> <p><br …

    uthsc Repository record

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