Results 251 to 260 of about 607,674 (294)

High-Spatial-Resolution Geochronology

Elements, 2013
High-spatial-resolution isotope analyses have revolutionised U–(Th–)Pb geochronology. These analyses can be done at scales of a few tens of microns or less using secondary ion mass spectrometry or laser ablation inductively coupled plasma mass spectrometry.
Nemchin, Alexander A.   +2 more
openaire   +2 more sources

Dynamic spatial resolution

Physics in Medicine & Biology, 1979
The study of the dynamic behaviour of radiopharmaceuticals within a patient using a scintillation camera with data acquisition and processing facilities often presents analytical problems because of the limited data available. In the effort to maintain good spatial resolution sensitivity is often needlessly reduced producing further limitation in the ...
openaire   +2 more sources

Spatial uncertainty and spatial resolution

Annual Meeting Optical Society of America, 1988
An observer’s ability to detect a threshold visual target depends on his knowledge of stimulus parameters, such as the target’s color, and its spatial and temporal locus. Withholding knowledge of the spatial locus of a visual acuity target should depress visual resolution because of the close theoretical relationship between spatial resolving power and
David J. Lasley, Theodore E. Cohn
openaire   +1 more source

Collimator Spatial Resolution

IEEE Nuclear Science Symposium Conference Record, 2005, 2006
Pixellated detectors based on cadmium-zinc telluride (CZT) are a promising alternative to NaI-based SPECT cameras. The performance of either system is quantitatively described in terms of resolution and sensitivity. This investigation is based on an analytical model published earlier, describing SPECT collimators according to the NEMA definitions of ...
H. Wieczorek   +5 more
openaire   +1 more source

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