Orion-yhtyma Oy

Terho Turkumaki

Jaakko A Aarnio

Jorma Kuronen

Voitto Saarinen

The invention relates to a cassette holder intended for a mammography apparatus, the holder being suitable for cassettes of different sizes and having means by which the holder can be widened or narrowed to a suitable size by the moving of a detachable cassette retainer (4, 4').

Variable-size cassette holder in a mammography apparatus

The invention relates to a method for thin needle biopsy in connection with mammography, wherein a stationary target is radiographed from two angles by means of a rotating picture head, the pictures are placed on a separate measurement table, and the x-, y-, and z-coordinates of the desired site in the target are calculated on the basis of the two pictures in a known manner. In the method, measuring means (3,4) on the measuring table are brought to the calculated x-, y-coordinates and a detachable needle guide (10) is placed in an attachment means (6) on the measurement table and the needle guide (10) is adjusted to these coordinates indicated by the measuring means (3,4), and the z-coordinate is adjusted by means of a scale in the needle guide (10), whereafter the adjusted needle guide is attached to the attachment means (9) in the mammography apparatus, the attachment means being in the same position with respect to the calculated coordinates as is the attachment means (6) on the measurement table, and a biopsy is carried out by pressing the needle manually into the target. The invention also relates to an assembly for embodying the method.

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Sipoo, Finland

Terho Turkumaki