title: Transfer function analysis of positron-emitting tracer imaging system (PETIS) data.
abstract: Quantitative analysis of the two-dimensional image data obtained with the positron-emitting tracer imaging system (PETIS) for plant physiology has been carried out using a transfer function analysis method. While a cut leaf base of Chinese chive (Allium tuberosum Rottler) or a cut stem of soybean (Glycine max L.) was immersed in an aqueous solution containing the [18F] F- ion or [13N]NO3- ion, tracer images of the leaf of Chinese chive and the trifoliate of soybean were recorded with PETIS. From the time sequence of images, the tracer transfer function was estimated from which the speed of tracer transport and the fraction moved between specified image positions were deduced.
authors.affiliation: Department of Radiation Research for Environment and Resources, Takasaki Radiation Chemistry Research Establishment, Japan Atomic Energy Research Institute, Gunma. Keutgen_N@yahoo.com
authors.forename: N
authors.initials: N
authors.lastname: Keutgen
authors.forename: S
authors.initials: S
authors.lastname: Matsuhashi
authors.forename: C
authors.initials: C
authors.lastname: Mizuniwa
authors.forename: T
authors.initials: T
authors.lastname: Ito
authors.forename: T
authors.initials: T
authors.lastname: Fujimura
authors.forename: N S
authors.initials: NS
authors.lastname: Ishioka
authors.forename: S
authors.initials: S
authors.lastname: Watanabe
authors.forename: T
authors.initials: T
authors.lastname: Sekine
authors.forename: H
authors.initials: H
authors.lastname: Uchida
authors.forename: S
authors.initials: S
authors.lastname: Hashimoto
mesh_terms: D000490:Allium / Q000502:physiology; D001693:Biological Transport, Active; D003627:Data Interpretation, Statistical; D005462:Fluorine Radioisotopes / Q000493:pharmacokinetics; D007091:Image Processing, Computer-Assisted; D009590:Nitrogen Radioisotopes / Q000493:pharmacokinetics; D018521:Plant Physiological Phenomena; D013025:Glycine max / Q000502:physiology; D014055:Tomography, Emission-Computed / Q000706:statistics & numerical data*
chemical_list: D005462:Fluorine Radioisotopes; D009590:Nitrogen Radioisotopes