Essays about: "imaging phantoms"

Showing result 21 - 25 of 44 essays containing the words imaging phantoms.

  1. 21. Volume calculation of the thyroid gland from SPECT images based on Monte Carlo simulations

    University essay from Umeå universitet/Radiofysik; Umeå universitet/Institutionen för fysik

    Author : Niklas Palmqvist; [2018]
    Keywords : nuclear medicine xeleris thyroid hyperthyroidism thyrotoxicosis monte carlo technetium iodine;

    Abstract : In this study the volume determination which is a part of the doseplanning for patients with thyrotoxicosis was investigated. The aim was to find an accurate method to determine the active volume with single photon emission tomography (SPECT) which in several studies have shown better results than with the currently used method planar scintigraphy (PS). READ MORE

  3. 22. Preparation of Materials for Deep Tissue Imaging with Slow Light

    University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Author : Mengqiao di; [2018]
    Keywords : Ultrasound Optical Tomography; Deep Tissue Imaging; Monte Carlo Simulation; Spectral Hole Burning; Physics and Astronomy;

    Abstract : Ultrasound Optical Tomography (UOT) is a proposed technique, which combines ultrasound imaging and optical imaging in a new way to detect, e.g. READ MORE

  4. 23. Development of Registration and Fusion Methods for the Jonasson Medical Imaging Center MiniPET-microCT

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

    Author : Dimitrios Gkotsoulias; [2018]
    Keywords : miniPET; microCT; Medical imaging; Multimodality imaging; Registration; Fusion; Elastix; Mutual Information;

    Abstract : Multimodal image registration is essential when combining functional and structural imaging modalities. Among the most common combinations, numerous methods have been developed for co-registration of CT and PET, typically validated on human size scanners. READ MORE

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

    University essay from Stockholms universitet/Fysikum

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

    Abstract : 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. READ MORE

  6. 25. Implementation of Shear Wave Elastography in Cervical Applications

    University essay from KTH/Skolan för teknik och hälsa (STH)

    Author : Anna Larsson; [2016]
    Keywords : Shear wave elastography; cervix; stiffness; Verasonics; curvilinear transducer;

    Abstract : Each year million of babies are born pre-term, some of these pre-term births occur due to the motherhaving a too soft cervix which can not withstand the forces the baby exposes it to. The aim of thisstudy was to implement and evaluate a programmable shear wave elastography ultrasound system forcervical applications and investigate the optimal settings of shear wave elastography push voltage andshear wave elastography push focus depth. READ MORE