[The quantitative determination of bone mineral content--a system comparison of similarly built computed tomographs].
An intercomparison of 4 CT scanners of the same manufacturer was performed. The bone mineral content of 11 lumbar vertebral columns removed directly post mortem was determined in a specially constructed lucite-water phantom. Even devices of the same construction were shown to yield a variation in the quantitative evaluation markedly exceeding the annual physiological mineral loss. As long as scanner adjustment by physical calibration phantoms has not yet been established, a course assessment and therapy control of bone mineral content should always be carried out on the same QCT scanner.
Andresen
R
R
Klinik für Radiologie, Universitätsklinikum Steglitz der FU Berlin.
Radmer
S
S
Banzer
D
D
Felsenberg
D
D
Wolf
K J
KJ
D015502:Absorptiometry, Photon; D015519:Bone Density; D002138:Calibration; D005069:Evaluation Studies as Topic; D006801:Humans; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging; D008961:Models, Structural; D010024:Osteoporosis / Q000000981:diagnostic imaging; D015898:Tomography Scanners, X-Ray Computed / Q000592:standards
Quantitative Knochenmineralgehaltsbestimmung (QCT)--Systemvergleich baugleicher Computertomographen.