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Cross-calibration of Bone Mineral Density between Two Different Dual X-ray Absorptiometry Systems: Hologic QDR 4500-A and Lunar EXPERT-XL / 대한핵의학회잡지
Korean Journal of Nuclear Medicine ; : 282-288, 1999.
Article Dans Coréen | WPRIM | ID: wpr-62355
ABSTRACT

PURPOSE:

A cross-calibration equation is needed to compare bone mineral density measured by different dual X-ray absoptiometry systems. We performed this study to establish appropriate cross-calibration equations between two different dual X-ray absorptiometry systems. MATERIALS AND

METHODS:

Bone mineral density of anterior-posterior lumbar spine (L2-4 level) and femoral neck were measured in 109 women (55+/-11yr) using two different dual X-ray absorptiometry systems (Lunar EXPERT-XL) and Hologic QDR 4500-A). Bone mineral density values measured by two systems, including area, bone mass content, bone mineral density and percentile of young normals were compared and cross-calibration equations between two systems derived.

RESULTS:

The bone mineral density values of 109 women measured by Lunar system were 0.958+/-0.17 g/cm2 at L2-4 and 0.768+/-0.131 g/cm2 at femur neck, which were significantly higher (13+/-6% at L2-4 and 19+/-7% at femur neck, p0.05). There was a high correlation between bone mineral density values of L2-4 and femoral neck obtained with both dual X-ray absortiometry systems (r=0.96 and 0.95, respectively). Cross-calibration equations relating the bone mineral density were Lunar=1.1287xHologic-0.0027 for L2-4 and Lunar=l.1556xHologic+0.0l82 for femoral neck.

CONCLUSION:

We obtained cross-calibration equations of bone mineral density between Lunar EXPERT-XL and Hologic QDR 4500-A. These equations can be useful in comparing bone mineral density obtained by different dual X-ray absorptiometry systems.
Sujets)

Texte intégral: Disponible Indice: WPRIM (Pacifique occidental) Sujet Principal: Ostéoporose / Rachis / Absorptiométrie photonique / Densité osseuse / Fémur / Col du fémur Type d'étude: Étude pronostique Limites du sujet: Femelle / Humains langue: Coréen Texte intégral: Korean Journal of Nuclear Medicine Année: 1999 Type: Article

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Texte intégral: Disponible Indice: WPRIM (Pacifique occidental) Sujet Principal: Ostéoporose / Rachis / Absorptiométrie photonique / Densité osseuse / Fémur / Col du fémur Type d'étude: Étude pronostique Limites du sujet: Femelle / Humains langue: Coréen Texte intégral: Korean Journal of Nuclear Medicine Année: 1999 Type: Article