A stable, low-background whole-body counter designed for uniform detector geometry

The activity of one gram of potassium

“…The accuracy of the derived TBK is of course critically dependent on the assumed value of the ratio 40 K:TBK. While other workers have paid careful consideration to the accuracy and reproducibility of their measurement techniques, a review of the literature shows that the assumed 40 K:TBK ratio varies from 27.33 to 31.31 Bq g −1 of potassium (Burkinshaw 1967, Ross and Morris 1968, Havlik 1970, Young et al 1975, Manocha and Mohindra 1976, Holtzman 1977, Graham 1983, HMSO 1985-6, Lykken et al 1987, Lan and Weng 1989, Fenwick et al 1991. This paper presents independent measurements and calculations of this ratio in an attempt to reduce the uncertainty in the accepted figure.…”

A Simple and Inexpensive Clinical Whole Body Counter

“…Recent trends in the measurement of body radioactivity are directed towards establishing inexpensive and versatile set ups to give diagnostic value. The first generation of expensive heavily shielded whole body counters (2,3,11) are becoming abstruse. The sensitivity requirements for clinical whole body counters not being as stringent as for the radiation protection counters, the use of unshielded systems can be envisaged.…”

Η Επίδραση Της Τεχνολογικής Προόδου Στη Δραστηριότητα Της Διαγνωστικής Πυρηνικής Ιατρικής

“…'Ολόσωμος σπινθηρογράφος έχει πετύχει νά ανιχνεύσει μέχρι καί 10" φωτόνια κάθε λεπτό, δηλαδή εκατοστά τοΰ μ Ci γιά τό Cs -137 καί δέκατα τοΰ μΟ γιά τό Κ-40, σέ μιά εξέταση διάρκειας 20 min. (Ross D.A., Morris A.C. Jr, 1968).…”