Bone densitometer with film cassette

A - Human Necessities – 61 – B

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A61B 6/00 (2006.01) G06T 7/60 (2006.01)

Patent

CA 2200969

A dual energy densitometer (10) includes a solid state linear x-ray detector (13) which may be swept across the patient with the movement of a poly- energetic fan beam (23) of x-rays to produce a digital bone density image. A broad spectrum film plate (25) interposed between the detector (13) and the patient simultaneously provides a full spectrum radiographic image of high resolution and low parallax such as may be used for morphometric studies. Intervertebral spaces (40) may be used to measure vertebrate heights which may be statistically combined to provide a standard against which crush fractures may be detected.

Densitomètre (10) biénergétique comprenant un détecteur linéaire (13) à rayons X à semi-conducteurs pouvant être passé sur un patient en même temps qu'un faisceau plat polyénergétique (23) de rayons X pour produire une image numérique de la densité osseuse. Une plaque photographique (25) à large spectre placée entre le détecteur (13) et le patient donne en même temps une image radiographique en spectre continu à haute résolution et faible parallaxe pouvant être utilisée pour des études morphométriques. Il est possible d'utiliser les espaces intervertébraux (40) afin de mesurer la hauteur des vertèbres, qui peut être combinée statistiquement pour produire une norme permettant de détecter les fractures tassements.

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