ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Morphometry  (1)
  • Neutron activation analysis  (1)
Collection
Publisher
Years
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Calcified tissue international 10 (1972), S. 289-301 
    ISSN: 1432-0827
    Keywords: Metacarpal ; Morphometry ; Density ; Bone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Description / Table of Contents: Résumé Les longueurs, les volumes extérieurs et les poids de 45 seconds métacarpes, déssèchés et nettoyés, sont déterminés. Les largeurs totales et médullaires de la diaphyse sont mesurées sur des radiographies antéro-postérieurs. le volume cortical, le volume externe et le poids de cendres de la diaphyse, d'une longueur de 1 cm, sont aussi déterminés. A partir des mesures morphométriques, les estimations des propriétés géométriques et densitométriques de la diaphyse et de l'os total sont analysées. Quelques estimations des propriétés géométriques ont pu être étudiées en estiamnt que la diaphyse du métacarpe est un cylindre. Les rapports entre les estimations et les propriétés géométriques et densitométriques sont envisagés et l'exactitude d'un modèle cylindrique est évaluée.
    Abstract: Zusammenfassung Länge, äußerer Umfang und Gewicht von 45 sauberen, trockenen zweiten Metacarpalknochen wurden bestimmt. Die totale Breite und die Markhöhlenbreite des mittleren Schaftes wurden mit posterior-anterioren Röntgenaufnahmen gemessen. Corticaler und äußerer Umfang und Aschgewicht eines 1 cm langen Stückes vom Schaft jedes Knochens wurden ebenfalls gemessen. Mittels morphometrischer Messungen wurden Schätzungen der geometrischen und densitometrischen Eigenschaften der Mittelschaftregion und des ganzen Knochens berechnet. Einige Schätzungen der geometrischen Eigenschaften wurden abgeleitet unter der Annahme, daß der metacarpale Schaft ein Zylinder ist. Die Beziehungen zwischen den Schätzungen und den geometrischen und densitometrischen Eigenschaften selbst wurden untersucht, und die Gültigkeit des Zylindermodelles wurde geprüft.
    Notes: Abstract The lengths, external volumes and weights of 45 clean, dry, second metacarpals were determined. The midshaft total and medullary widths were measured on postero-anterior radiographs. The cortical volume, external volume and ash weight of a 1 cm length of the shaft of each bone were also measured. From the morphometric measurements estimators of the geometric and densitometric properties of the midshaft section and of the whole bone were computed. Some estimators of the geometric properties were derived on the assumption that the metacarpal shaft is a cylinder. The relationships between the estimators and the geometric and densitometric properties themselves were examined and the validity of the cylinder model was explored.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Calcified tissue international 35 (1983), S. 135-144 
    ISSN: 1432-0827
    Keywords: Total body calcium ; Neutron activation analysis ; Femur ; Radius ; Ulna ; Densitometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Summary In a heterogeneous group of 12 male and 30 female patients, total body calcium (TBCa) was measured by neutron activation analysis, and bone mineral content of the distal femur and six regions of the distal radius and ulna were measured by photon absorptiometry. TBCa was an average of 71 g (9%) lower than normal in the females and 119 g (11%) lower than normal in the males. Of the forearm measurements, those of the radial shaft provided the best estimate of TBCa with a standard error of estimation (SEE) of 88 g (14% of the mean value) for female patients alone, and 113 g (16%) for the whole group. The measurement on the femur provided a better estimate with SEE 80 g (13%) for female patients and 90 g (13%) for the whole group. These SEE are comparable with the variability in TBCa between normal subjects, which has a coefficient of variation of the order of 20% in both sexes. A slightly better estimate of TBCa can be obtained by using a multiple regression equation involving both the femur and radial shaft measurements with a SEE of 74 g (12%) for female patients and 81 g (11%) for the whole group. The correlation between the estimated deficit of TBCa and the estimated deficit of bone mineral from the forearm and the femur has been calculated.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...