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All › Diagnosis › Diagnostic Techniques and Procedures › Diagnostic Techniques, Radioisotope › Radioisotope Dilution Technique

Radioisotope Dilution Technique (0)

      Articles on Radioisotope Dilution Technique

      1. Two time-point assessment of bile acid kinetics in humans using stable isotopes.
        Frans Stellaard, Vincent W Bloks, ... Folkert Kuipers

        Isotopes Environ Health Stud 46(3):325-36 (2010) PMID 20645205

        The stable isotope dilution measurement of bile acid pool sizes and turnover rates in humans has involved the collection of nine blood samples over four days. This precludes widespread application to larger population studies. This study describes a two time-point approach for blood sampling without...
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      2. Comparison of DXA and water measurements of body fat following gastric bypass surgery and a physiological model of body water, fat, and musc...
        David G DG Levitt, Lauren M LM Beckman, ... Carrie P CP Earthman

        J Appl Physiol 109(3):786-95 (2010) PMID 20558754

        We reproducibly measured body composition from half-body DXA scans and compared the values of total body fat estimated from total body water (TBW) and DXA measurements before and after Roux-en-Y gastric bypass surgery (RYGB). DXA, TBW (deuterium dilution), extracellular water (ECW; bromide dilution)...
      3. Regional differences in osmotic behavior in brain during acute hyponatremia: an in vivo MRI-study of brain and skeletal muscle in pigs.
        Christian Overgaard-Steensen, Hans Stødkilde-Jørgensen, ... Troels Ring

        Am J Physiol Regul Integr Comp Physiol 299(2):R521-32 (2010) PMID 20445159

        Brain edema is suggested to be the principal mechanism underlying the symptoms in acute hyponatremia. Identification of the mechanisms responsible for global and regional cerebral water homeostasis during hyponatremia is, therefore, of utmost importance. To examine the osmotic behavior of different...
      4. Bioimpedance spectroscopy for the estimation of body fluid volumes in mice.
        M E ME Chapman, L L Hu, ... D E DE Kohan

        Am J Renal Physiol 299(1):F280-3 (2010) PMID 20462974 PMCID PMC2904176

        We examined how well BIS estimates body fluid volume in mice. Using C57/Bl6 mice, the BIS system demonstrated <5% intermouse variation in total body water (TBW) and extracellular (ECFV) and intracellular fluid volume (ICFV) between animals of similar body weight. TBW, ECFV, and ICFV differed between...
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      5. Evaluating the mobile heavy metal pool in soak-away sediment, road dust and soil through sequential extraction and isotopic exchange.
        Manish M Kumar, Hiroaki H Furumai, ... Ikuro I Kasuga

        Water Sci Technol 62(4):920-8 (2010) PMID 20729597

        Selective sequential dissolution (SSD) and isotopic dilution are two most commonly applied techniques for the measurement of mobile fraction of heavy metal present in the urban environment. This work examined the compliance between SSD proposed by the Community Bureau of Reference (BCR) and isotopic...
      6. Validation of dual-energy x-ray absorptiometry and foot-foot impedance against deuterium dilution measures of fatness in children.
        John J JJ Reilly, Kostas K Gerasimidis, ... Jonathan C JC Wells

        Int J Pediatr Obes 5(1):111-5 (2010) PMID 19565400

        Errors in estimation of fat mass using BIA and DXA can be very large, and the direction of error can differ between the sexes....
      7. Doubly labelled water: Multi-point and two-point methods in pre-school children.
        Kurosh K Djafarian, Diane M DM Jackson, ... John R JR Speakman

        Audio, Transactions of the IRE Professiona... 5(1):102-10 (2010) PMID 20078379

        Multi- and two-point approaches give similar results for calculation of daily TEE in pre-school children. For studies aiming to establish a population level of TEE the two-sample method is a cost effective approach. However, the multi-point method appears to have greater accuracy and precision based...
      8. Total body water measurements in adolescent athletes: a comparison of six field methods with deuterium dilution.
        Ana L AL Quiterio, Analiza M AM Silva, ... Luis B LB Sardinha

        J Strength Cond Res 23(4):1225-37 (2009) PMID 19568032

        -Assessing hydration, that is, total body water (TBW) in adolescent athletes should be part of a comprehensive training program. However, there are no specific methods to assess TBW in young athletes. Moreover, the use of traditional techniques developed in healthy youths, based on a 2-compartment m...
      9. Validity of impedance-based predictions of total body water as measured by 2H dilution in African HIV/AIDS outpatients.
        Adama A Diouf, Agnès A Gartner, ... Salimata S Wade

        Br J Nutr 101(9):1369-77 (2009) PMID 18845025 PMCID PMC2740955

        We compared TBW values predicted from BIA to those measured by 2H dilution. Range of bias values was 0.1-4.3 kg, and errors showed acceptable values (2.2-3.4 kg) for fourteen equations and a high value (10.4) for one equation. Two equations developed in non-HIV-infected subjects showed non-significa...
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      10. Impact of standardization of creatinine methodology on the assessment of glomerular filtration rate in children.
        Tarak Srivastava, Uri S Alon, ... Uttam Garg

        Pediatr Res 65(1):113-6 (2009) PMID 18703997

        We measured creatinine in random serum and urine samples by three commercially available assays: Jaffe (J), enzymatic (E) and enzymatic method traceable to IDMS (E-IDMS). There was a significant bias in the two enzymatic methods when compared with J method. The theoretical predicted errors in overes...