{
    "abstract": "In Magnetic Resonance-Linac (MR-Linac) dosimetry formalisms, a new correction factor, k\nThis study aims to develop and implement a Monte Carlo (MC)-based framework for the determination of k\nPhase space files for three irradiation fields of the ELEKTA Unity 1.5\u00a0T/7\u00a0MV flattening-filter-free MR-Linac were provided by the manufacturer and used as source models throughout this study. Twelve ionization chambers (three farmer-type and nine small-cavity detectors, from three manufacturers) were modeled (including their dead volume) using the EGSnrc MC code package. k\nFor both parallel (to the magnetic field) orientations, k\nFor the 10\u00a0\u00d7\u00a010\u00a0cm",
    "authors": [
        {
            "affiliation": "Medical Physics Laboratory, Medical School, National and Kapodistrian University of Athens, Athens, Greece.",
            "firstname": "Vasiliki",
            "initials": "V",
            "lastname": "Margaroni"
        },
        {
            "affiliation": "Medical Physics Laboratory, Medical School, National and Kapodistrian University of Athens, Athens, Greece.",
            "firstname": "Eleftherios P",
            "initials": "EP",
            "lastname": "Pappas"
        },
        {
            "affiliation": "Medical Physics Laboratory, Medical School, National and Kapodistrian University of Athens, Athens, Greece.\nGlobal Clinical Operations, Elekta Ltd, Crawley, West Sussex, UK.",
            "firstname": "Anastasios",
            "initials": "A",
            "lastname": "Episkopakis"
        },
        {
            "affiliation": "Medical Physics Laboratory, Medical School, National and Kapodistrian University of Athens, Athens, Greece.",
            "firstname": "Evaggelos",
            "initials": "E",
            "lastname": "Pantelis"
        },
        {
            "affiliation": "Medical Physics Laboratory, Medical School, National and Kapodistrian University of Athens, Athens, Greece.",
            "firstname": "Panagiotis",
            "initials": "P",
            "lastname": "Papagiannis"
        },
        {
            "affiliation": "Global Clinical Operations, Elekta Ltd, Crawley, West Sussex, UK.",
            "firstname": "Nikolas",
            "initials": "N",
            "lastname": "Marinos"
        },
        {
            "affiliation": "Medical Physics Laboratory, Medical School, National and Kapodistrian University of Athens, Athens, Greece.",
            "firstname": "Pantelis",
            "initials": "P",
            "lastname": "Karaiskos"
        }
    ],
    "conclusions": "For the 10\u00a0\u00d7\u00a010\u00a0cm",
    "copyrights": "\u00a9 2022 American Association of Physicists in Medicine.",
    "doi": "10.1002/mp.16082",
    "journal": "Medical physics",
    "keywords": [
        "MR-Linac",
        "Monte Carlo",
        "Unity",
        "air gap",
        "correction factor",
        "dosimetry",
        "ionization chamber",
        "kB,Q",
        "magnetic field"
    ],
    "methods": null,
    "publication_date": "2022-11-10",
    "pubmed_id": "36349535",
    "results": "For both parallel (to the magnetic field) orientations, k",
    "title": "Dosimetry in 1.5\u00a0T MR-Linacs: Monte Carlo determination of magnetic field correction factors and investigation of the air gap effect.",
    "xml": "<Element 'PubmedArticle' at 0x788504097dd0>"
}