Blar i NTNU Open på forfatter "Frengen, Jomar"
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Commisioning of MLC parameters by specialized VMAT plans, film dosimetry and complexity analysis
Dunseth, Henning (Master thesis, 2022)VMAT er den mest benyttede behandlingsteknikken innen stråleterapi ved St. Olavs Hospital, og det er viktig å kontrollere at den beregnede dosen samsvarer med den avleverte dosen. Derfor gjennomføres en pasient-spesifikk ... -
Comparison of Dose Distributions resulting from IMRT and VMAT, and Assessment of MLC Leaf Positioning Errors
Dybwad, Anniken (Master thesis, 2013)Intensity-modulated radiotherapy (IMRT) is a radiation technique used in the treatment of head-and-neck cancer patients. IMRT results in a dose distribution which conforms to the tumor volume(s), and therefore sparing ... -
Deep-inspiration breath-hold - Development and utilization of a deep-inspiration breath-hold system for breast cancer radiotherapy
Jensen, Christer André (Doctoral theses at NTNU;2018:315, Doctoral thesis, 2018)The purpose of this thesis was to develop a deep-inspiration breath-hold (DIBH) system and study the performance and clinical implications in the treatment of leftsided breast cancer and radiotherapy. This was investigated ... -
Designing an analysis tool for film based dosimetry and applications - Evaluation of breast cancer treatment plans in external radiotherapy, using GafChromic EBT3 film and a flat-bed scanner
Håland, Ane Vigre (Master thesis, 2020)Filmdosimetri ved bruk av radiokromisk EBT3 film og en transmisjonsskanner av type flat-bed CCD viser en ikke-uniform skanner-avlesning, som kan korrigeres ved hjelp av en absolutt korreksjonsmatrise som er uavhengig av ... -
Development and evaluation of a radiochromic film dosimetry program - application on stereotactic columna radiotherapy
Gustavsen, Stine (Master thesis, 2020)Stråleterapifaget er stadig under utvikling og med det utvikles det nye teknikker. En slik metode er stereotaktisk strålingsbehandling, hvor det er typisk med høye, presise doser. En av utfordringene med behandlingsplanlegging ... -
Development of a deep inspiration breath-hold system for radiotherapy utilizing a laser distance measurer
Jensen, Christer André; Skottner, Nils Eivind; Frengen, Jomar; Lund, Jo-Åsmund (Journal article; Peer reviewed, 2017)Deep inspiration breath‐hold (DIBH) is a technique for treating left‐sided breast cancer (LSBC). In modern radiotherapy, one of the main aims is to exclude the heart from the beam aperture with an individualized beam design ... -
Monitoring deep inspiration breath hold for left-sided localized breast cancer radiotherapy with an in-house developed laser distance meter system
Jensen, Christer André; Abramova, Tatiana Mikhailovna; Frengen, Jomar; Lund, Jo-Åsmund (Journal article; Peer reviewed, 2017)Deep inspiration breath hold (DIBH) in left‐sided breast cancer radiotherapy is a technique to reduce cardiac and pulmonary doses while maintaining target coverage. This study aims at evaluating an in‐house developed DIBH ... -
Optimization and verification of dosimetric robustness of VMAT dose-plans
Hægeland, Camilla (Master thesis, 2016)Radiation therapy has for several years played an important role in the curative management of patients with early stage disease and also in the palliation of symptoms associated with advanced or metastatic disease. Organs ... -
Proton therapy of head and neck cancer: evaluation of PTV-based and robust optimized IMPT versus VMAT
Aarberg, Anja Einebærholm (Master thesis, 2017)Radiation therapy for head and neck cancers has had an essential role for curative treatment for many years. Due to the location of the cancer, several critical organs will get irradiated and this may lead to serious ... -
Robustness of VMAT and 3DCRT plans toward setup errors in radiation therapy of locally advanced left-sided breast cancer with DIBH
Jensen, Christer André; Roa, Ana María Acosta; Johansen, Marie; Lund, Jo-Åsmund; Frengen, Jomar (Journal article; Peer reviewed, 2018)Purpose The aim of our study was to evaluate and compare the robustness of treatment plans produced using the volumetric modulated arc-therapy (VMAT) and the standard three-dimensional conformal radiotherapy (3DCRT) ... -
Script-based automatic radiotherapy planning for cervical cancer
Funderud, Marit; Hoem, Ingvild Straumsheim; Guleng, Marte Anette Dunseth; Eidem, Monica; Almberg, Sigrun Saur; Alsaker, Mirjam Delange; Kornerup, Josefine Frida Margareta Ståhl; Frengen, Jomar; Marthinsen, Anne Beate Langeland (Peer reviewed; Journal article, 2023)Background This study aimed to develop fully automated script-based radiotherapy treatment plans for cervical cancer patients, and evaluate them against clinically accepted plans, as validation before clinical ... -
Strålebehandling med Volumetric Modulated Arc Therapy (VMAT) mot venstresidig brystkreft med spredning til regionale lymfeknuter
Jensen, Lene Merete; Tangstad, Lise Berg; Solli, Kjersti Sund; Frøseth, Trude Camilla Salvesen; Sundqvist, Eric; Frengen, Jomar (Journal article, 2020)Bakgrunn: Studier har vist høyere dødelighet av hjertesykdom blant pasienter som fikk strålebehandling mot venstre bryst sammenlignet med de som fikk behandling mot høyre bryst. Pustestyrt behandlingsteknikk reduserer ...