Siemens Aktiengesellschaft

Dietmar Lehne

Wolfgang Rogler

Guenther Pausch

Guenter Theil

Werner Rogalsky

The patient support mechanism has a stationary lower part having a first ramp that ascends toward an examination space of the examination apparatus, an essentially horizontal, first section, a second ramp that proceeds essentially parallel to the first ramp, and an essentially horizontal second section that lies in the region of the examination space. An upper part having a bearing surface for a patient is displaceable on the lower part in the longitudinal direction thereof, whereby the upper part is lifted via the two ramps into the level of the examination space upon displacement of the upper part.

Patient support mechanism for medical examination apparatus

The supply of current pulses to gradient coils in a magnetic resonance imaging tomography apparatus results in physical vibration of the coils, causing acoustic noise. For reducing such acoustic noise, a gradient coil system is disclosed wherein the individual gradient coils are secured on a tubular carrier formed by a two concentric shells. The two shells are joined to each other in a manner which is rigid against shearing in the longitudinal direction by connector elements. The self-excited vibrational behavior of the gradient coil system is thereby tuned to lower vibrational amplitudes and to higher vibrational frequencies, so that a more effective damping can be achieved with acoustic damping measures.

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Poxdorf, Germany

Dietmar Lehne