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A computerized Infu...
A computerized Infusion Pump for control of tissue tracer concentration during Positron Emission Tomography in vivo Pharmacokinetic/Pharmacodynamic measurements
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- Eriksson, Olof (författare)
- Uppsala universitet,Enheten för radiologi
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Wallberg, Andreas (författare)
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- Syvänen, Stina (författare)
- Uppsala universitet,Institutionen för farmaceutisk biovetenskap,Hammarlund-Udenaes
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- Josephsson, Raymond (författare)
- Uppsala universitet,Klinisk virologi
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- Långström, Bengt (författare)
- Uppsala universitet,Institutionen för biokemi och organisk kemi
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- Bergström, Mats (författare)
- Uppsala universitet,Institutionen för farmaceutisk biovetenskap
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(creator_code:org_t)
- 2008-05-30
- 2008
- Engelska.
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Ingår i: BMC Medical Physics. - : Springer Science and Business Media LLC. - 1756-6649. ; 8:2
- Relaterad länk:
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https://bmcmedphys.b...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- BACKGROUND:A computer controlled infusion pump (UIPump) for regulation of target tissue concentration of radioactive compounds was developed for use in biological research and tracer development for PET.METHODS:Based on observed tissue or plasma kinetics after a bolus injection of the tracer an algorithm calculates the infusion needed to obtain a specified target kinetic curve. A computer feeds this infusion scheme into an infusion pump connected to an animal via a venous catheter. The concept was validated using [11C]Flumazenil administrated to Sprague-Dawley rats where the whole brain distribution and kinetic of the tracer was measured over time using a microPET-scanner. The accuracy and precision of the system was assessed by producing steady-state levels of the tracer and by mimicking kinetics after oral administration.RESULTS:Various kinetic profiles could be generated, including rapid achievement of constant levels, or step-wise increased levels. The resulting tissue curves had low deviation from the target curves according to the specified criteria: AUC (%): 4.2 +/- 2.8, Maximal deviation (%): 13.6 +/- 5.0 and R2: 0.95 +/- 0.02.CONCLUSION:The UIPump-system is suitable for use in PET-research for assessment of PK/PD properties by simulation of different tracer tissue kinetics in vivo.
Nyckelord
- MEDICINE
- MEDICIN
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- art (ämneskategori)
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