Siemens Aktiengesellschaft

Hartwig Ingwersen

Ralph Oppelt

Wilhelm Duerr

Norbert Krause

A computed tomography apparatus permits tomographic exposures to be produced using a single gantry, but with a number of differently located patient tables. For this purpose, the gantry is mounted so as to be movable on a horizontal surface, so that it can be moved from a standby position into a number of differently-located operating positions. The gantry has a connector mechanism permitting temporary and releasable attachment of the gantry to the patient support table with which it is being used at a given time. The connector mechanism can be controlled by the computed used to generate the tomographic images for finely positioning the gantry relative to the patient table.

Spiral-helical scan computed tomography apparatus

A surface coil arrangement for use in a nuclear mangetic resonance apparatus includes two identically constructed surface coils arranged geometrically anti-parallel and electrically connected to each other so that radio-frequency magnetic fields which penetrate both coils do not generate any resultant (difference) current. Each surface coil is formed by a coaxial line section in a loop, with the jacket shielding of the coaxial line having a gap at one location in the loop. Both the inner conductor and the jacket shielding at one end of each section are electrically connected to the jacket shielding at the other end of that coaxial line section.

Surface coil arrangement for use in a nuclear magnetic resonance

A surface resonator for use in nuclear magnetic resonance tomography is a single turn loop of ribbon-like electrical conductor having spaced ends facing each other which form a capacitor whose capacitance determines the resonant frequency. The loop of ribbon-like conductor is shaped to conform substantially to the generated surface of a truncated cone. The ends of the loop may be in the form of spaced plates for providing the necessary capacitance, or may be connected by one or more discrete component capacitors.

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Uttenreuth, Germany

Hartwig Ingwersen