title: Longitudinal assessment of glomerular filtration rate by gamma camera and portable external detector.
abstract: Noninvasive isotope chelate methods to assess glomerular filtration rate (GFR) are less accurate than blood sampling. However, some measurement errors would be expected to be constant for an individual, and repeat estimations may be less variable. In 18 patients, estimates of GFR were obtained by 2 gamma camera techniques and a portable external detector at a mean interval of 1 year, to assess accuracy in predicting a change of GFR. Errors in these techniques were not significantly better than those predicted from two independent estimates. Most GFR measurement error for noninvasive methods appears to be random.
authors.affiliation: Department of Nuclear Medicine, Southampton General Hospital, UK.
authors.forename: D G
authors.initials: DG
authors.lastname: Waller
authors.forename: B
authors.initials: B
authors.lastname: Ramsay
authors.forename: J S
authors.initials: JS
authors.lastname: Fleming
authors.forename: D
authors.initials: D
authors.lastname: Ackery
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D005919:Glomerular Filtration Rate; D006801:Humans; D007668:Kidney / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D009942:Organometallic Compounds; D004369:Pentetic Acid; D011866:Radioisotope Renography; D016284:Technetium Tc 99m Pentetate; D013997:Time Factors
chemical_list: D009942:Organometallic Compounds; D004369:Pentetic Acid; D016284:Technetium Tc 99m Pentetate