Sökning: "68Ga"

Visar resultat 1 - 5 av 29 avhandlingar innehållade ordet 68Ga.

1. 1. Synthesis, Characterisation and Application of 68Ga-labelled Macromolecules

   Författare :Irina Velikyan; Bengt Långström; Mats Bergström; Helmut Maecke; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; 68Ga; 68Ge 68Ga generator; radiolabelling; microwave heating; specific radioactivity; peptide; protein; antibody; oligonucleotide; positron emission tomography; tumour; Kemi; Chemistry; Kemi;

   Sammanfattning : The positron emitting radionuclide 68Ga (T1/2 = 68 min) might become of practical interest for clinical positron emission tomography (PET). The metallic cation, 68Ga(III), is suitable for complexation with chelators, either naked or conjugated with biological macromolecules. LÄS MER

3. 2. Development of 18F- and 68Ga-Labelled Tracers : Design Perspectives and the Search for Faster Synthesis

   Författare :Elisabeth Blom; Bengt Långström; Oleksiy Itsenko; Irina Velikyan; Farhad Karimi; Frank Rösch; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; PET; nucleophilic 18F-fluorination; perfluoro; F-SPE; molecular design; 68Ga; chelators; DOTA; NOTA; microwave; halogen exchange; harmine; biotin; RGD; VEGF; CRP; Chemistry; Kemi; Organisk kemi; Organic Chemistry;

   Sammanfattning : This thesis deals with the design of 18F- and 68Ga-labelled positron emission tomography (PET) tracers and the development of technologies that enable faster and simpler preparation with high specific radioactivity. Techniques like microwave heating and reducing the concentrations of the precursor were investigated with this perspective. LÄS MER

4. 3. Labelling of various macromolecules using positron emitting 76Br and 68Ga : Synthesis and characterisation

   Författare :Ulrika Yngve; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; 76Br; Radiobromination; Prosthetic Groups; Macromolecules; Oligonucleotides; 68Ga; PET; Octreotide; Metal Chelates; Kemi; Chemistry; Kemi; organisk kemi; Organic Chemistry;

   Sammanfattning : Different prosthetic groups containing a trialkylstannyl- and an electrophilic group have been synthesised and labelled with the accelerator produced 76Br (T1/2=16 h) through oxidative bromination. The labelled prosthetic groups were conjugated to amino-containing macromolecules such as proteins and 5´-modified oligonucleotides. LÄS MER

5. 4. Pituitary Tumors - Epidemiology and the Diagnostic Value of 68Ga-DOTATOC PET

   Författare :Axel Tjörnstrand; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; PET; Pituitary neuroendocrine tumor; pituitary tumor; somatostatin receptor imaging; gallium68; 68Ga; SSTR; SSTR-PET;

   Sammanfattning : Pituitary neuroendocrine tumors (PitNETs) are considered common in the general population. However benign in most cases, these tumors can evoke dramatic morbidity in patients with aggressive tumor growth and/or excess hormone secretion. LÄS MER

7. 5. [68Ga]Exendin-4: Bench-to-Bedside : PET molecular imaging of the GLP-1 receptor for diabetes and cancer

   Författare :Ram kumar Selvaraju; Olof Eriksson; Olle Korsgren; Lars Johansson; Martin Gotthardt; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; PET; [68Ga]Exendin-4; beta cell imaging; insulinoma; dosimetry;

   Sammanfattning : Diabetes epidemic is underway. Beta cell dysfunction (BCF) and loss of beta cell mass (BCM) are known to be key events in its progression. Currently, there are no reliable techniques to estimate or follow the loss of BCM, in vivo. LÄS MER