Quotables
"The radio craze will die out in time."
Thomas Edison ; 1922
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4879465 | Detector module for scintillation cameras A detector module for use in scintillation cameras utilizes a plurality of elongated scintillator strips. A temperature gradient is established along the length of each strip. By identifying the particular strip in which a scintillation event has taken pl... | 11/07/1989 |
| 4865284 | Collimator storage device in particular a collimator cart A collimator storage device for a collimator having a certain diameter. The device comprises a support, a first collimator storage member having a first slot for inserting the collimator, and a second collimator storage member having a second slot for ins... | 09/12/1989 |
| 4849638 | Single-focus collimator and scintillation camera system and method for using it A collimator is in the shape of a closed curve and has one and only one focal point. The collimator is dimensioned such that, in use, the focal point may be positioned inside the body organ to be imaged. The focal point is caused to densely trace over the... | 07/18/1989 |
| 4823017 | Scintillation camera and multifocal fan-beam collimator used therein A fan-beam collimator has a plurality of focal lengths. The shortest focal length is located at the center of the collimator. The longest focal length is located at the periphery of the collimator. The focal length increases between the minimum focal leng... | 04/18/1989 |
| 4820924 | Scintillation camera and three dimensional multifocal collimator used therewith A collimator has a plurality of focal points in the transaxial direction and at least one focal point in the axial direction. The shortest focal lengths are located at the center of the collimator. The longest focal length is located at the periphery of t... | 04/11/1989 |
| 4810885 | Heated scintillator A scintillation crystal is heated. A temperature gradient is established across a scintillation crystal inside a scintillation camera system. The decay time of a scintillation flash is related to the temperature of the site at which the corresponding scin... | 03/07/1989 |
| 4780823 | Multiple pixel area-weighted acquisition system for scintillation cameras Upon the detection of a scintillation event at an event pixel, a plurality of associated pixels are identified. Weights are assigned to the event pixel and to all of the associated pixels in such a manner as to attribute the event over an area in a statis... | 10/25/1988 |
| 4774410 | Asymmetric S.P.E.C.T. collimator which surrounds the patient First, second, third and fourth sections of a collimator are arranged to bound an asymmetric interior region. The collimator has one and only one focal point, which is located inside the body to be imaged. The first and second sections are curved and are ... | 09/27/1988 |
| 4752691 | Method and apparatus for compensating finite angular resolution in collimated scintillation cameras Image data are acquired of an object along a given nominal view direction as well as at other view directions which are slightly off-axis with respect to the nominal view direction. The image data is used to produce an enhanced image of the view along the... | 06/21/1988 |
| 4692890 | Method and integrator circuit for integrating signals, in particular for scintillation gamma camera A method and integrator circuit for digitally integrating signals wherein digital signals to be integrated are supplied to a digital adder thereby generating digital adder output signals. Each digital adder output signal is stored and the stored digital a... | 09/08/1987 |
| 4692625 | Detector head mounting mechanism and supporting structure A mechanism for mounting a detector head including a collimator which comprises a supporting structure having a single trunnion axis for the detector head. A shifting mechanism is provided for shifting the detector head and the supporting structure with r... | 09/08/1987 |
| 4688780 | Patient support A patient support for scintillation camera imaging applications is formed as a unitary element having a generally constant wall thickness. The element has shoulder, neck and head sections shaped to receive a patient's shoulders neck, and head respectively... | 08/25/1987 |
| 4670657 | Astigmatic collimator A collimator collimates radiation so that each beam passes through two focal lines. One of the lines is in a transaxial plane and the other line is in an axial plane. The focal length in the transaxial plane is longer than is the focal length in the axial... | 06/02/1987 |
| 4663187 | Scintillation crystal and method of making it A thick layer of CsI(Na) is heated to or slightly below its melting point. The CsI(Na) is held at that temperature for 7 to 10 hours and is cooled to room temperature, preferably in two steps. The resulting scintillation crystal is translucent or transpar... | 05/05/1987 |
| 4659935 | Bilateral collimator for rotational camera transaxial SPECT imaging of small body organs A bilateral collimator for rotational camera transaxial SPECT imaging of small body organs produces two different simultaneous views of a body organ to be imaged. The views are produced by groups of passageways which do not intersect each other.... | 04/21/1987 |
| 4656359 | Scintillation crystal for a radiation detector A scintillation crystal is provided for a radiation detector, which comprises a first layer of a crystal material having relatively poor mechanical properties, however having a high energy resolution; and a second layer of a crystal material having relati... | 04/07/1987 |
| 4652759 | Counterbalanced radiation detection system A counterbalanced radiation detection system is provided which comprises a stand and a first and second radiation detectors tiltably connected with the stand. A torque transforming means is connected between the first and second radiation detectors for tr... | 03/24/1987 |
| 4649930 | Apparatus for beat buffering techniques varified by arrhythmias detection for stopaction frames of cardiac function From a heart sound signal input the occurrence of a first occurring heart sound is detected. Thereupon a predetermined heart sound enable window time is established, which for a first detection cycle is set to approximately the diastolic interval for the ... | 03/17/1987 |
| 4649268 | Imaging dynodes arrangement An imaging dynodes arrangement for an electron multiplier, which comprises a first and a second imaging dynodes having dynode cones with a cone tip and a cone base, said dynode cones being connected with each other such that they form free cavities thereb... | 03/10/1987 |
| 4649269 | Dynodes arrangement for an electron multiplier A dynodes arrangement for an electron multiplier. It comprises a first dynode having a first voltage input; a second dynode having a second voltage input; and a control grid positioned between the first and second dynodes and having a control voltage inpu... | 03/10/1987 |
| 4629893 | Device for detachably securing a collimator to a radiation detector A device for detachably securing a collimator to a radiation detector, comprising a first and second annular grooves secured to the radiation detector and the collimator respectively, a split ring having a first and second ring ends and being received in ... | 12/16/1986 |
| 4625116 | Structure for supporting a detector head A structure for supporting a detector head of a radiation detector which comprises an arm having a distal end supporting the head, a base, a joint mounted on the base and moveably supporting the arm and a slotted member rotatably mounted to the base in a ... | 11/25/1986 |
| 4618775 | Radiation detector circuit with real time photon counting A radiation detector circuit, which comprises a radiation detector containing a scintillation crystal and a photomultiplier tube for real time photon measurement having a pulse output, and which also includes a plurality of pulse counters each having a pu... | 10/21/1986 |
| 4618772 | Nuclear imaging apparatus A scintillation camera receives radiation from an object under examination and determines the locations of scintillation events. The camera issues x and y coordinate signals which correspond to these locations, and z unblank signals which correspond to th... | 10/21/1986 |
| 4605856 | Method and device for stabilizing photomultiplier tubes of a radiation image device against drift A method and device for stabilizing photomultiplier tubes of a radiation image device against drift by illuminating the photomultiplier tubes with light. A certain number of the photomultiplier tubes are arranged in an array for final application. Then th... | 08/12/1986 |
| 4599690 | Method and circuit for correcting count rate losses of radiation events Radiation events of a radiation detector which are subject to deadtime losses during the acquisition time are detected as event triggers. For each detected radiation event a deadtime signal is provided. The acquisition time is subdivided into a succession... | 07/08/1986 |
| 4593189 | Proximity detector for a body scanner A proximity detector is provided for a body scanner having a scanning surface. It comprises an energy beam emitting and receiving device in front of the scanning surface of the body scanner for an energy beam projected in a plane parallel to the scanning ... | 06/03/1986 |
| 4590378 | Counterbalanced radiation detection device A counterbalanced radiation detection device comprises a radiation detector having a specific weight. It further comprises means connected with the radiation detector and the base for positioning the radiation detector in different heights with respect to... | 05/20/1986 |
| 4583187 | Method and circuit for stabilizing conversion gain of radiation detectors of a radiation detection system A method and a circuit are provided for tuning or calibrating the gain of the radiation detectors of a radiation detection system. For each radiation detector tuning point the energy map status is measured in parallel. Thereby an energy response vector is... | 04/15/1986 |
| 4578585 | Detector head mounting mechanism A first pinhole and an associated first pin and also a second pinhole and an associated second pin are mounted between a detector head and a detector head supporting structure such that the first pinhole and the first pin are concentric with a first axis ... | 03/25/1986 |
| 4577107 | Detector head mounting apparatus A mechanism is provided for mounting a detector head including a collimator onto supporting structure of a radiation detector for rotation about a selected one of a plurality of trunnion axes, the selection being made so that rotation occurs about the tru... | 03/18/1986 |
| 4575810 | Method and circuit for processing pulses by applying the technique of weighted acquisition A method and a circuit are provided for processing pulses, caused by a radioactive source and produced by an imaging radiation detector, by applying the technique of weighted acquisition for forming an image. An image weight function is formed correspondi... | 03/11/1986 |
| 4574478 | Method and device for demounting in a radiation detector a photomultiplier tube A method and device are provided for demounting in a radiation detector a photomultiplier tube the bottom of which is solely bonded with a scintillation crystal assembly by means of an elastic light transparent adhesive. A shearing tool is placed at the b... | 03/11/1986 |
| 4562353 | Method and device for producing nuclear images A method and device for producing nuclear images of an object under investigation which emits nuclear radiation, wherein the object is scanned along a scan axis by means of a radiation detector having a radiation detector field of view. The radiation dete... | 12/31/1985 |
| 4560876 | Detector head mounting apparatus A mechanism is provided for mounting a detector head including a collimator onto supporting structure of a radiation detector for rotation about a selected one of a plurality of trunnion axes, the selection being made so that rotation occurs about the tru... | 12/24/1985 |
| 4549552 | Heart sound detector and cardiac cycle data are combined for diagnostic reliability From a heart sound signal input the occurrence of a first occurring heart sound is detected. Thereupon a predetermined heart sound enable window time is established, which for a first detection cycle is set to approximately the diastolic interval for the ... | 10/29/1985 |
| 4548204 | Apparatus for monitoring cardiac activity via ECG and heart sound signals From a heart sound signal input the occurrence of a first occurring heart sound is detected. Thereupon a predetermined heart sound enable window time is established, which for a first detection cycle is set to approximately the diastolic interval for the ... | 10/22/1985 |
| 4546777 | Heart sound detector and synchronization for diagnostics From a heart sound signal input the occurrence of a first occurring heart sound is detected. Thereupon a predetermined heart sound enable window time is established, which for a first detection cycle is set to approximately the diastolic interval for the ... | 10/15/1985 |
| 4535242 | Method and a circuit for processing pulses of a pulse train Improved method and circuit are disclosed for processing pulses of a pulse train such that tails of pulses ("A" pulses) which precede a valid true pulse ("T" pulse) to be processed and/or pile-up pulses ("P" pulses) which are piled up on the tails of prec... | 08/13/1985 |
| 4523091 | Radiation detecting apparatus with reduced magnetic field sensitivity The radiation detecting apparatus contains at least one photomultiplier tube for the detection of light. It has been found that the photomultiplier tube will emit erroneous output signals when exposed to a perturbing magnetic field. This is particularly t... | 06/11/1985 |
