We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
In vivo quantification of the [<sup>11</sup>C]DASB binding in the normal canine brain using positron emission tomography.
- Authors
Taylor, Olivia; Van Laeken, Nick; De Vos, Filip; Polis, Ingeborgh; Bosmans, Tim; Goethals, Ingeborg; Achten, Rik; Dobbeleir, Andre; Vandermeulen, Eva; Baeken, Chris; Saunders, Jimmy; Peremans, Kathelijne
- Abstract
Background: [11C]-3-amino-4-(2-dimethylaminomethyl-phenylsulfanyl)-benzonitrile ([11C]DASB) is currently the mostly used radiotracer for positron emission tomography (PET) quantitative studies of the serotonin transporter (SERT) in the human brain but has never been validated in dogs. The first objective was therefore to evaluate normal [11C]DASB distribution in different brain regions of healthy dogs using PET. The second objective was to provide less invasive and more convenient alternative methods to the arterial sampling-based kinetic analysis. Results: A dynamic acquisition of the brain was performed during 90 min. The PET images were coregistered with the magnetic resonance images taken prior to the study in order to manually drawn 20 regions of interest (ROIs). The highest radioactivity concentration of [11C]DASB was observed in the hypothalamus, raphe nuclei and thalamus and lowest levels in the parietal cortex, occipital cortex and cerebellum. The regional radioactivity in those 20 ROIs was quantified using the multilinear reference tissue model 2 (MRTM2) and a semi-quantitative method. The values showed least variability between 40 and 60 min and this time interval was set as the optimal time interval for [11C]DASB quantification in the canine brain. The correlation (R2) between the MRTM2 and the semi-quantitative method using the data between 40 and 60 min was 99.3 % (two-tailed p-value < 0.01). Conclusions: The reference tissue models and semi-quantitative method provide a more convenient alternative to invasive arterial sampling models in the evaluation of the SERT of the normal canine brain. The optimal time interval for static scanning is set at 40 to 60 min after tracer injection.
- Subjects
BRAIN research; DOGS; POSITRON emission tomography; SEROTONIN transporters; BRAIN imaging
- Publication
BMC Veterinary Research, 2015, Vol 11, p1
- ISSN
1746-6148
- Publication type
Article
- DOI
10.1186/s12917-015-0622-3