Improved accuracy of single-energy computed tomography bone mineral determination using threshold analysis.
Invest Radiol
; 22(6): 484-9, 1987 Jun.
Article
en En
| MEDLINE
| ID: mdl-3623852
ABSTRACT
Single-energy CT for bone-mineral determination underestimates the degree of mineralization because of error caused by fat in the marrow space. A correction using set theory and threshold analysis was developed to reduce this error. Corrections between 4.7% and 130.9% of fat-induced error are observed. The amount of correction is related directly to the amount of osteopenia present, and is patient specific. This technique may be appropriate for clinical evaluation because the major application of quantitative CT (QCT) is for bone mineral analysis in a population with increasing marrow space fat over time. This technique may allow reduction of the uncertainty of normal data developed using single energy QCT, thereby making the technique more sensitive to early detection of osteopenia.
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Banco de datos:
MEDLINE
Asunto principal:
Huesos
/
Tomografía Computarizada por Rayos X
/
Minerales
Tipo de estudio:
Screening_studies
Límite:
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Invest Radiol
Año:
1987
Tipo del documento:
Article