Bergfjord
Per H. Bergfjord, East Grinstead GB
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20130289796 | VISION SYSTEM FOR RADIOTHERAPY MACHINE CONTROL - In various embodiments, a system for controlling radiotherapy equipment in a treatment environment includes a controller for receiving, from one or more image capture devices, data indicating the position of one or more objects in the treatment environment. Based on the position data, the controller defines one or more exclusionary zones from which the radiotherapy equipment is excluded. Each zone has a buffer area surrounding one or more of the objects. The controller further directs the radiotherapy equipment such that a radiotherapy treatment plan is delivered without the equipment entering into the exclusionary zones. | 10-31-2013 |
Per Harald Bergfjord, Crawley GB
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20090097614 | Radiotherapy Apparatus and parts thereof - A mount for a radiotherapy apparatus comprises a cylindrical bearing surface to allow the mount to be supported in a rotatable manner, a housing extending from the bearing surface and having an extent in a direction along an axis of the cylindrical bearing surface, the mount having an axial through-hole which encompasses the axis of the cylinder, the housing having at least one opening communicating with the through-hole and extending in a direction transverse to the axis of the cylinder. This mount can be used as the basis for a number of different radiotherapy systems. One such system comprises a support having a cylindrical bearing surface on which is mounted the cylindrical bearing surface of such a mount, an arm extending from a side of the mount in a direction in line with the axis of the cylindrical bearing surface, the arm comprising a linear accelerator adapted to emit a beam of therapeutic radiation from an end portion of the arm in a direction transverse to and towards the axis of the cylindrical bearing surface. Another possible system comprises a support having a cylindrical bearing surface on which is mounted the cylindrical bearing surface of such a mount, a source of therapeutic radiation fixed to the mount and adapted to emit a beam transverse to and towards the axis of the cylindrical bearing surface though the at least one opening of the mount. Both systems can further comprise one or more of a source of diagnostic radiation, a detector for diagnostic radiation and a detector for therapeutic radiation. In the former, these can be mounted on retractable arms, so as to be selectively retractable into the mount or extendable alongside the linear accelerator. The latter system can further include a cover around the mount, the cover including a concave region extending into the axial through-hole of the mount. | 04-16-2009 |
Per Harald Bergfjord, Middlesex GB
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20090213990 | X-ray apparatus - An investigative X-ray apparatus comprises a source of X-rays emitting a cone beam centred on a beam axis, a collimator to limit the extent of the beam, and a two-dimensional detector, the apparatus being mounted on a support which is rotatable about a rotation axis, the collimator having a first state in which the collimated beam is directed towards the rotation axis and the second state in which the collimated beam is offset from the rotation axis, the two-dimensional detector being movable accordingly, the beam axis being offset from the rotation axis by a lesser amount than the collimated beam in the second state. The X-ray source is no longer directed towards the isocentre as would normally be the case; the X-ray source is not orthogonal to the collimators. This is advantageous in that the entire field of the X-ray tube can be utilised. As a result, a lesser field is required of the X-ray tube and the choice of tube designs and capacities can be widened so as to optimise the performance of the X-ray tube in other aspects. | 08-27-2009 |
20140169519 | Cone-beam CT Scanning - Combined systems that rely on a single source able to switch between therapeutic emissions and diagnostic emissions for a cone-beam CT scanner can be improved by rotating the collimator during CT scanning to allow a wider maximum aperture. The detector can also be positioned in an offset manner so as to take best advantage of this aperture. The rotated position for a collimator with a rectangular aperture (such as a square) can be one in which a diagonal of the aperture lies transverse to the plane swept out by the beam axis during rotation of the mount. More generally, where the aperture has at least one straight edge, the predetermined position is one in which the straight edge lies at an oblique angle to the plane swept out by the beam axis during rotation of the mount. | 06-19-2014 |
Per Harald Bergfjord, East Grinstead GB
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20130208866 | Methods and Apparatus for Providing Accessories to a Patient During Radiation Treatment - An apparatus is provided for performing radiation therapy on a patient. In certain embodiments, the apparatus includes a patient support surface, a gantry having a radiation source rotatable around the patient support surface, a supply arm extending through the central bore, a supply interface disposed on the supply arm, and a supply line connecting the supply interface to a supply source. The apparatus delivers radiation therapy accessories to the patient while minimally interfering with access to the patient by radiation therapy personnel. | 08-15-2013 |
20130276233 | PATIENT SUPPORT SYSTEM - A patient support system includes a floor cavity in the floor of a treatment room; a patient support device comprising a treatment table; a base; a first movement mechanism on which the treatment table is mounted; a second movement mechanism mounted on the base and attached to the first movement mechanism, wherein the first and second movement mechanisms are moveable independently of each other; the first movement mechanism is configured to raise and lower the treatment table and the second movement mechanism is configured to raise and lower the first movement mechanism such that in a lowered position the second movement mechanism is contained within the floor cavity. | 10-24-2013 |
20150059095 | PATIENT SUPPORT SYSTEM - A patient support system includes a floor cavity in the floor of a treatment room; a patient support device comprising a treatment table; a base; a first movement mechanism on which the treatment table is mounted; a second movement mechanism mounted on the base and attached to the first movement mechanism, wherein the first and second movement mechanisms are moveable independently of each other; the first movement mechanism is configured to raise and lower the treatment table and the second movement mechanism is configured to raise and lower the first movement mechanism such that in a lowered position the second movement mechanism is contained within the floor cavity. | 03-05-2015 |
Per Harald Bergfjord, West Sussex GB
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20150144811 | RADIOTHERAPY APPARATUS - A radiotherapy apparatus includes a rotatable drum on which is mounted a gantry arm carrying a radiation source, the arm extending from the drum to locate the source is offset from the axis of rotation of the drum and oriented towards the axis, and a mechanism to apply a tilt to the arm depending on the rotational orientation of the drum. | 05-28-2015 |
Thomas Bergfjord, Uppsala SE
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20120125702 | Battery Pack, an Electric Vehicle and a Method - The present invention relates to a battery pack ( | 05-24-2012 |
20140077594 | CURRENT DIVERTING DEVICE, A METHOD AND A COMPUTER PROGRAM PRODUCT - Disclosed is a current diverting device adapted to be electrically connected with a battery pack arranged to power a machine including at least a first operating unit. The battery pack includes a positive and a negative pole and a plurality of battery cells interconnected between the poles such that at least two battery cells are connected in series for providing a higher battery pack voltage level, and is further arranged to feed electricity to the at least one first operating unit via the battery poles. Also disclosed is a method and a computer program product. | 03-20-2014 |
Thomas Bergfjord, Upsala SE
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20120226399 | TRACTION CONTRO MODULE, A VEHICLE AND A METHOD OF AIDING IN CONTROLLING THE MOTION OF THE VEHICLE - The invention relates to a traction control module ( | 09-06-2012 |
Thomas Bergfjord, Halmby SE
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20120229056 | BATTERY PACK WITH SAFETY DEVICE, CONTROL DEVICE AND CONTROL METHOD - A battery pack ( | 09-13-2012 |