Sökning: "skin phantom"

Visar resultat 6 - 10 av 15 uppsatser innehållade orden skin phantom.

1. 6. Validation of Catalyst HD™ positioning performance using a deformable phantom

   Master-uppsats, Lunds universitet/Sjukhusfysikerutbildningen

   Författare :Beatrice Akinrimisi; [2019]
   Nyckelord :Medicine and Health Sciences;

   Sammanfattning : Aim: The overall purpose for this master thesis was to evaluate the deformable algorithm of the optical surface scanning system Catalyst HDTM . The aim was to develop a method to evaluate the non-rigid registration algorithm using a deformable phantom and with it investigate the positioning accuracy of the depth calculation. LÄS MER

3. 7. Assessment of two optimization strategies for pediatric computed tomography examinations: Bismuth shielding & organ-based tube current modulation

   Master-uppsats, Stockholms universitet/Fysikum

   Författare :Sofia Skyttner; [2017]
   Nyckelord :Pediatric CT Computed Tomography Bismuth TCM tube current modulation optimization organ dose eye breast;

   Sammanfattning : Background: It is well known that pediatric patients are different from adult patients. Not only are children of a smaller physical size, but their anatomy differs as well. They are also more vulnerable to ionizing radiation than adults are, since their larger attributable life-time risk for cancer. LÄS MER

4. 8. Skin dose measurement during radiation therapy of mastectomy patients using GafChromicTM EBT3 films.

   Master-uppsats, Linköpings universitet/Institutionen för medicinsk teknik

   Författare :Madeleine Bergström; [2017]
   Nyckelord :Mastectomy; Radiation therapy; GafChromic; EBT3; microcirculation;

   Sammanfattning : Purpose: The aim of this study was to develop a method of measuring changes in the skin microcirculation and skin dose for mastectomy patients in connection with the radiation treatment. The distribution of the skin dose, its dependence on the energy of the beam, field geometry and bolus material and the accuracy of the given skin dose in the treatment planning system were studied. LÄS MER

5. 9. Diode laser spectroscopy for oxygen detection in the lungs of infants

   Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Atomfysik

   Författare :Peilang Liao; [2016]
   Nyckelord :GASMAS; Tunable laser; Transport theory; 3D phantom; Diagnoses; Gas; Lung; Physics and Astronomy;

   Sammanfattning : This thesis work is part of a larger project with final goal to be able to measure the oxygen concentration in the lungs of infants, using non-invasive laser spectroscopy. This thesis is specifically dealing with simulations of light transport through the upper body of infants, as well as constructing a tissue-like model (phantom) that can be used in experiments. LÄS MER

7. 10. Measurement of absorbed dose to the skin and its relation with microcircular changes in breast cancer radiotherapy

   Master-uppsats, Stockholms universitet/Fysikum

   Författare :Chahed Yacoub; [2016]
   Nyckelord :Radiotherapy; Breast; Microcirculation; Skin;

   Sammanfattning : Radiation therapy has been shown to increase local and regional control as well as overall survival with breast cancer, but the vast majority of patients develop acute skin reactions, which are in part related to microvascular changes. These reactions vary between different skin sites. LÄS MER