Essays about: "medical plan"

Showing result 1 - 5 of 54 essays containing the words medical plan.

1. 1. Evaluating aperture shape controller (ASC) in modulated radiation treatments

   University essay from

   Author : Vilma Andrén Cederholm; [2023-09-28]
   Keywords : Medical physics;

   Abstract : To decrease aperture complexity, the aperture shape controller (ASC) is a recently introduced function in Eclipse external beam planning (Varian Medical Systems, Palo Alto, USA). ASC works within the photon optimizer, minimizing distances between adjacent leaf tips of the MLC. READ MORE

3. 2. Monte Carlo evaluation of static and dynamic 6FFF treatments - Evaluation of dose distributions calculated with AAA, Acuros XB, and Collapsed Cone (RayStation and DoseCheck)

   University essay from

   Author : Alma Blombäck; [2023-02-23]
   Keywords : Medical physics; Monte Carlo; 6FFF; AAA; Acuros XB; DoseCheck; RayStation; DVH evaluation; flattening filter free;

   Abstract : There are several benefits to removing the standard flattening filter and using so-called flattening filter free (FFF) treatments in external radiation therapy with photons. The main advantage is the possibility of significantly shortening the treatment time, de spite this FFF is not widely used yet. READ MORE

4. 3. Electrification and implementation of an uninterruptable power supply system at a medical center in the Talara Province, Peru

   University essay from KTH/Kemiteknik

   Author : Johnny Hagelin; [2023]
   Keywords : Photovoltaic engineering; Minor Field Study; Energy Resilience; UPS system; Energy poverty; Solcellsteknik; fältstudie; energiresiliens; UPS-system; energifattigdom;

   Abstract : Marginalisering gällande tillgång till elektricitet utgör en betydande utmaning i avlägsna områden i Peru. Elnätets stabilitet är låg och detta utgör ett hot mot viktig infrastruktur såsom sjukhus och vårdcentraler. READ MORE

5. 4. Deep Learning-based Regularizers for Cone Beam Computed Tomography Reconstruction

   University essay from KTH/Matematisk statistik

   Author : Sabina Syed; Josefin Stenberg; [2023]
   Keywords : Adversarial Convex Regularization; Computer Vision; Cone Beam Computed Tomography; Convolutional Neural Networks; Deep Learning; Image Reconstruction; Adversarial Convex Regularization; Bildrekonstruktion; Datorseende; Djupinlärning; Faltningsnätverk; Volymtomografi;

   Abstract : Cone Beam Computed Tomography is a technology to visualize the 3D interior anatomy of a patient. It is important for image-guided radiation therapy in cancer treatment. During a scan, iterative methods are often used for the image reconstruction step. READ MORE

6. 5. Uncertainties in the use of synthetic CT (sCT) for daily online adaptive radiotherapy for lung cancer

   University essay from Lunds universitet/Sjukhusfysikerutbildningen

   Author : Johansson Vivika; [2023]
   Keywords : Medicine and Health Sciences;

   Abstract : Background and purpose: Cone Beam Computed Tomography (CBCT) based online adaptive radiotherapy (oART) has been clinically implemented for several anatomical sites worldwide. However, random and abrupt anatomical changes with large density alterations can occur in lung patients, leading to uncertainties with synthetic computed tomography (sCT) and dose calculation. READ MORE