PT - JOURNAL ARTICLE AU - McCormick, Michael V. AU - Wahner, Heinz W. TI - Quality Control Procedures for a Whole-Body Counter DP - 1975 Mar 01 TA - Journal of Nuclear Medicine Technology PG - 23--27 VI - 3 IP - 1 4099 - http://tech.snmjournals.org/content/3/1/23.short 4100 - http://tech.snmjournals.org/content/3/1/23.full SO - J. Nucl. Med. Technol.1975 Mar 01; 3 AB - Variations in design and laboratory use of a whole-body counting instrument require instrument-specific procedures for quality control and maintenance. The whole-body counter at the Mayo Clinic is a low-level counting facility used primarily for determination of total-body potassium and studies of single isotope retention. Maintenance and quality control procedures of this instrument include: (A) daily controls and efforts to maintain a low and constant background counting rate; (B) monitoring the sensitivity and linear response of the detection system by matching photomultiplier tube response; and (C) performance evaluation, such as evaluation of reproducibility and accuracy of measurements. The procedure for counting total-body potassium in a human subject is described in detail.