Shimadzu Corporation

Masao Iinuma

Hajime Takemoto

A support column holds an X-ray tube having a collimator and is held by a linear guide on a side of a main frame and moved in the longitudinal direction of a table top board by a motor via a gear and a rack. An image receiving system to hold an image intensifier is supported by a linear guide on a side of the main frame and moved in the longitudinal direction of the table top board by a drive mechanism independently from the support column. The table top board can be moved to a position close to the support column on an upper portion of the main frame. When the support column is moved in the longitudinal direction, it is possible for an operator to approach a subject person from an back side portion of the table top board while the operator is being kept in an easy body orientation.

Apparatus for X-ray fluoroscopy and radiography

An X-ray tube ( ) is rotated about its focal point along a plane perpendicular to a body axis of a patient by an X-ray tube rotation driver and thus the X-ray irradiation field moves. When the side of the X-ray irradiation field reaches an edge detector ( ) in the edge part of the flat panel detector, the edge detector detects X-ray and provides a signal to a controller. The controller controls the X-ray limiting device ( ) to move shield blades thereof to limit the range of the X-ray irradiation field. The above structure makes it possible to move the center of the X-ray irradiation field without moving the patient and also to prevent the X-ray irradiation field from going outside of the flat panel detector.

Growing community of inventors

Ibaraki, Japan

Masao Iinuma