CT APPARATUS FOR IMAGING CRANIAL ANATOMIES

摘要

The invention relates to a medical computed tomography imaging apparatus which is especially designed to enable cranial imaging. The structure of the apparatus includes a gantry (2) comprising imaging means (21, 22) and a positioning support (8) which positioning support (8) is arranged to position the patient's cranium for exposure such that, when exposed, the cranium is scanned by a radiation beam substantially parallel with a plane formed by the facial area of the cranium and substantially only in an area on the facial side of the cranium.

主权项

1. A computed tomography apparatus for imaging cranial anatomies, which apparatus includes
a support structure which is arranged to support a substantially ring-shaped structure supporting imaging means, which imaging means include a source of radiation (21) and a receiver of image information, which imaging means are arranged within said substantially ring-shaped structure supporting the imaging means substantially on opposite sides of each other and movable within said ring-shaped structure supporting the imaging means, a collimator arranged substantially into connection with the source of radiation, the collimator including a two-dimensional opening to limit radiation emitted from a focus of the source of radiation into a two-dimensional and expanding radiation beam, in which apparatus said ring-shaped structure supporting the imaging means includes an examination opening into which an object to be imaged is positionable for imaging and within which is mounted a positioning support for supporting an anatomy being imaged for the duration of an exposure,characterized in that support points provided by said positioning support are dimensioned in accordance with dimensions of a human cranium and said positioning support is arranged into connection with the examination opening such that when a human is positioned in the positioning support, a face of the human is pointing towards an angle areaa central axis of the examination opening ±45 degrees,and/or such that the plane formed by the human face is parallel with or in the angle area of ±45 degrees with respect to a plane which is formed by said imaging means when moved within said substantially ring-shaped structure supporting the imaging means.