Sökning: "Single Point Tomography"

Hittade 5 uppsatser innehållade orden Single Point Tomography.

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

   Master-uppsats, Lunds universitet/Sjukhusfysikerutbildningen

   Författare :Elias Nilsson; [2022]
   Nyckelord :Medicine and Health Sciences;

   Sammanfattning : 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. LÄS MER

3. 2. Evaluation of internal dosimetry for 225- Ac using one single measurement based on 111-In imaging

   Master-uppsats, Lunds universitet/Sjukhusfysikerutbildningen

   Författare :Selma Curkic; [2021]
   Nyckelord :Medicine and Health Sciences;

   Sammanfattning : Background and aim: There is a high interest in determining the absorbed dose in tumors and organs for various radiotherapy cancer treatments. Due to limitations in today's methods of determining the patient specific absorbed dose it is usually not proceeded clinically. LÄS MER

4. 3. On the usage of a photon counting CT detector for SPECT

   Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

   Författare :Måns Andersson; [2017]
   Nyckelord :;

   Sammanfattning : This work explores the possibility of using a photon counting silicon detector developedfor Computer Tomography (CT) in Single Photon Emission Computed Tomography(SPECT) applications. This would allow for a more versatile and a much cheapersystem. The main focus is on determining the efficiency and resolution of such a system. LÄS MER

5. 4. High Accuracy Relative Luminescence Quantum Yield Measurements of Upconverting Nanoparticles

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

   Författare :Björn Thomasson; [2016]
   Nyckelord :Upconverting Nanoparticles; Biomedical imaging; Luminescence tomography; Luminescence imaging; Engineering; Physics; Engineering Physics; Photonics; Cancer; Cancer detection; Cancer diagnostics; Laser Engineering; quantum yield; imaging; upconverting; Biophotonics; Single Point Tomography; Relative Luminescence Quantum Yield Measurements; Energy transfer upconversion; Nanoscience; Luminescence; Imaging of biological tissue; Upconversion; Beam profile evaluation; Beam profile; UCNP; UCNPs; Nanoparticles; Technology and Engineering;

   Sammanfattning : The name Upconverting nanoparticles refers to a novel category of luminescence emitters that are capable of generating visible luminescence upon excitation with noncoherent and longer wavelength monochromatic near-infrared light, at excitation fluence rates as low as 1-103 W/cm2. This unique optical behaviour is of great interest to researchers as it could potentially allow for virtually autofluorescence free luminescence imaging of living tissue. LÄS MER

7. 5. Feasibility of Implementing the PILATUS CdTe 300k Detector as a Real Time Gamma Camera in Intraoperative Medical Imaging

   Kandidat-uppsats, Lunds universitet/MAX IV-laboratoriet; Lunds universitet/Fysiska institutionen

   Författare :Mariam Andersson; [2015]
   Nyckelord :PILATUS; CdTe; detector; medical imaging; lymphoscintigraphy; sentinel lymph node biopsy; quantum efficiency; resolution; sensitivity; semiconductor detector; gamma camera; Physics and Astronomy;

   Sammanfattning : The full-width-at-half-maximum of the point spread functions for a pixellated cadmium telluride detector exposed to gammas from a 140.5 keV Tc-99m source are modelled in GATE, at a detector-collimator distance of 5 cm, and collimator-source distances of 5 cm and 10 cm, with lead pinholes of diameter 1.0 mm, 1.5 mm, 2. LÄS MER