Essays about: "phantom"

Showing result 1 - 5 of 241 essays containing the word phantom.

1. 1. Robustness Analysis of Perfusion Parameter Calculations

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Alicia Palmér; [2024]
   Keywords : Perfusion; Medical image analysis; Dynamic Contrast Enhanced Magnetic Resonance Imaging; Tofts model; Functional imaging; Optimization; T1 map; Perfusion; Medicinsk bildanalys; Dynamisk kontrastförstärkt magnetisk resonanstomografibildtagning; Tofts-modell; Funktionell bildbehandling; Optimering; T1 karta;

   Abstract : Cancer is one of the most common causes of death worldwide. When given optimal treatment, however, the risk of severe illness may greatly be reduced. Determining optimal treatment in turn requires evaluation of disease progression and response to potential, previous treatment. READ MORE

3. 2. Independent validation of a system for real-time localization of the prostate during motion tracking radiotherapy

   University essay from Lunds universitet/Fysiska institutionen

   Author : Klara Stefansson; [2024]
   Keywords : Technology and Engineering;

   Abstract : Intrafractional prostate motion during external beam radiotherapy of prostate tumors has been reported as a limiting factor in accurate treatment delivery. Technology for real-time image-guided radiotherapy has been introduced for tracking and for compensating prostate motion during treatment and could allow for reduced target margins. READ MORE

4. 3. 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

5. 4. Enabling Hybrid Real Time and Retrospectively Gated Imaging in a Numerical Phantom

   University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

   Author : Sara Mineur; [2023]
   Keywords : Cardiovascular Magnetic resonance Imaging CMR ; Sector Wise Golden-Angle SWIG ;

   Abstract : Sector-Wise Golden Angle (SWIG) is a novel approach that was developed to address the limitations associated with Golden Angle radial imaging, commonly used for high temporal resolution flow measurements. Golden angle radial imaging is a time-efficient method that effectively reduces motion sensitivity. READ MORE

6. 5. Simulating metal ct artefacts for ground truth generation in deep learning.

   University essay from Lunds universitet/Avdelningen för Biomedicinsk teknik

   Author : Arthur Barakat; [2023]
   Keywords : Technology and Engineering;

   Abstract : CT scanning stands as one of the most employed imaging techniques used in clinical field. In the presence of metal implants in the field of view (FOV), distortions and noise appear on the 3D image leading to inaccurate bone segmentation, often required for surgery planning or implant design. READ MORE