Essays about: "soft tissue attenuation"

Showing result 1 - 5 of 7 essays containing the words soft tissue attenuation.

  1. 1. Feasibility of single time point dosimetry during 177Lu-PSMA-617 treatments of prostate cancer

    University essay from Lunds universitet/Sjukhusfysikerutbildningen

    Author : Elias Nilsson; [2022]
    Keywords : Medicine and Health Sciences;

    Abstract : Introduction: Standard dosimetry methods for radionuclide therapies re- quire imaging at multiple time points post injection. An alternative method has been presented in the literature that uses previously acquired pharma- cokinetic data to create so-called dose factors. READ MORE

  3. 2. Material decomposition using a photon counting X-ray detector in low energy range

    University essay from Lunds universitet/Sjukhusfysikerutbildningen

    Author : Rasmus Solem; [2021]
    Keywords : Medicine and Health Sciences;

    Abstract : Material decomposition in X-ray imaging is used to separate different materials or elements in an image and to quantify their respective concentration. The material decomposition and quantification are made possible by the dependency of attenuation on the attenuating material and photon energy. READ MORE

  4. 3. Automatic Segmentation of Skeleton in Whole-Body MR Images

    University essay from Institutionen för informationsteknologi

    Author : Anders Hedström; [2013]
    Keywords : ;

    Abstract : Magnetic Resonance Imaging(MRI) has developed as a widespread technique to examine various body parts and diagnose a wide range of diseases. MRI can often be superior to other imaging techniques such as Computed Tomography(CT) since it does not use ionizing radiation and can give a clearer image of soft tissue. READ MORE

  5. 4. Three material decomposition in dual energy CT for brachytherapy using the iterative image reconstruction algorithm DIRA : Performance of the method for an anthropomorphic phantom

    University essay from Institutionen för medicinsk teknik; Tekniska högskolan

    Author : Robin Westin; [2013]
    Keywords : DECT; Iterative reconstruction; Tissue decomposition; Numerical stability; Uncertainty propagation;

    Abstract : Brachytherapy is radiation therapy performed by placing a radiation source near or inside a tumor. Difference between the current water-based brachytherapy dose formalism (TG-43) and new model based dose calculation algorithms (MBSCAs) can differ by more than a factor of 10 in the calculated doses. READ MORE

  6. 5. Feasibility of Gd Contrast Agent in Spectral Computed Tomography

    University essay from KTH/Fysik

    Author : Martin Björnmalm; Maximillian Patzauer; [2013]
    Keywords : ;

    Abstract : X-ray computed tomography (CT) is currently a vital diagnostic tool in hospitals the world over. To be able to image a patient's interior quickly can facilitate a diagnosis so that proper treatment can be administered. In some cases a contrast agent is administered intravenously prior to the CT-scan, in order to enhance image quality. READ MORE