1974
DOI: 10.1259/0007-1285-47-564-845
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99Tcmcomplexes for skeletal scintigraphy. Physico-chemical factors affecting bone and bone-marrow uptake

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Cited by 32 publications
(9 citation statements)
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“…The finding that technetium derivatives of polyphosphates and PPi are accumulated in bone (Subramanian, McAfee, Bell, Blair, O'Mara & Ralston, 1972;Hosain, 1973;Subramanian & McAfee, 1971), a property which is currently used for skeletal scintigraphy, suggests that such transport occurs in vivo. However, although it is often 265 believed that the phosphate moiety is likely to be involved in the uptake because it binds to the mineral (Subramanian & McAfee, 1971;Jones, Francis & Davis, 1975), other possibilities, such as adsorption of the reduced tin present in the technetium complex (Cox, 1974) cannot be ex cluded. There is also no proof that PPi itself is taken up by the same process as are the technetium derivatives, since technetium might change the characteristics of PPi, for example, by rendering it more resistant to enzymatic hydrolysis.…”
Section: Introductionmentioning
confidence: 99%
“…The finding that technetium derivatives of polyphosphates and PPi are accumulated in bone (Subramanian, McAfee, Bell, Blair, O'Mara & Ralston, 1972;Hosain, 1973;Subramanian & McAfee, 1971), a property which is currently used for skeletal scintigraphy, suggests that such transport occurs in vivo. However, although it is often 265 believed that the phosphate moiety is likely to be involved in the uptake because it binds to the mineral (Subramanian & McAfee, 1971;Jones, Francis & Davis, 1975), other possibilities, such as adsorption of the reduced tin present in the technetium complex (Cox, 1974) cannot be ex cluded. There is also no proof that PPi itself is taken up by the same process as are the technetium derivatives, since technetium might change the characteristics of PPi, for example, by rendering it more resistant to enzymatic hydrolysis.…”
Section: Introductionmentioning
confidence: 99%
“…Der anorganische Anteil wird zum größten Teil von Kalzium-und Phosphationen gebildet, deren Mengenverhältnis zwischen 1,3 und 2 liegt. Diese beiden Ionen liegen im Knochen in einer speziellen Form von Kalziumphosphat als "Apatit" vor, der in etwa der folgenden Summenformel entspricht: Ca 10 (33). Diese erhöhte Aufnahme findet sich nur bei den Technetiumverbindungen, nicht jedoch bei Kalzium oder Pyrophosphat (P-32-markiert).…”
Section: Der Aufbau Des Knochensunclassified
“…Diskussion "Cold lesions", d.h. Skelettareale mit verminderter Aktivitätsanreicherung, können verschiedene Ursachen haben (2, 4). Ein solcher Befund ist beispielsweise bei alten Knocheninfarkten oder auch nach perkutaner Strahlentherapie zu erheben (3,6). Bei Patienten mit malignen Erkrankungen muß dabei in erster Linie an eine Metastasierung gedacht werden.…”
unclassified