Abstract:
An x-ray detector has a light sensitive detector that is substantially transparent to x-rays, and has opposite sides that are permeated by incoming x-rays. At each of said opposite sides, a scintillator is arranged on the sensor that converts the incoming x-rays into light at each of said opposite sides.
Abstract:
A focus-detector arrangement and an X-ray apparatus for generating projective or tomographic phase contrast recordings of a subject are disclosed. In at least one embodiment, the focus-detector arrangement includes a radiation source with a focus, arranged on a first side of the subject, for generating a fan-shaped or conical beam of rays; at least one X-ray optical grating arranged in the beam path, with at least one phase grating arranged on the opposite second side of the subject in the beam path generating an interference pattern of the X-radiation preferably, in a particular energy range; and an analysis-detector system which detects at least the interference pattern generated by the phase grating in respect of its phase shift with position resolution. According to at least one embodiment of the invention, at least one X-ray optical grating including bars which are free from overhangs form shadows in the beam path of the fan-shaped or conical beam of rays.
Abstract:
In the English translation document, please delete the title of the abstract at page 11 line 3, as follows: In the English translation document, please amend the paragraph at page 11 lines 5-11, as follows: The invention relates to a method for monitoring an x-ray apparatus. To prevent the application of a harmful x-ray dose, it is proposed in accordance with the invention to compare a distance value indicating a distance between an x-ray source and a surface of a patient with a predetermined mini-mum distance value and to generate a warning signal, if the distance value is smaller than the minimum distance value. In the English translation document, please delete the term—FIG.—at page 11 line 13.
Abstract:
To implement a method for controlling the application of ionizing radiation to a body, provision is made for an instrument, which can apply therapeutic radiation sources to a body, with a part of a locating system being provided to locate the position of the therapeutic radiation sources on an instrument in the body. With the instrument inserted into the body of the patient, an assignment of the located position of the therapeutic radiation sources to the three-dimensional representation of the body is possible by using the locating system. The therapeutic radiation source can then be applied, when the located position corresponds to a position previously determined on the basis of the three-dimensional representation of the body.
Abstract:
In a catheter device and a method for in vivo activation of a photosensitizing drug in a vessel, endovascular tissue, and/or intraluminal tissue, a catheter carrying both an optical coherence tomography (OCT) lens, from which OCT imaging light is emitted, and a photodynamic therapy (PDT) lens from which photosensitizing drug-activating light is emitted, is inserted into a vessel containing a lesion to be treated. A photosensitizing drug is caused to be placed in the vessel as well, such as in the form of a coating on a stent or a coating on an exterior of a balloon carried by the catheter. Light is emitted from the PDT lens to activate the photosensitizing drug while light is simultaneously emitted from the OCT lens to obtain an OCT image to monitor the drug activation.
Abstract:
In a shockwave system with a shockwave source for treatment of a patient with shockwaves, a control and evaluation unit for evaluating an input signal supplied directly thereto that is correlated with a blood pressure value of the patient determined during the treatment, and controls the shockwave source dependent on the input signal.
Abstract:
In a method to determine an operating parameter of a shockwave source for the generation of a shockwave to disintegrate a calculus in a patient by a shockwave lithotripsy, a characteristic of the patient and/or of the calculus is determined before and/or during the shockwave lithotripsy and the operating parameter is automatically determined dependent on the characteristic. A device for determining an operating parameter of a shockwave source for the destruction of a calculus in a patient has an acquisition and control unit for determination and/or input of a characteristic of the patient and/or of the calculus, and for automatic determination of the operating parameter dependent on the characteristic.
Abstract:
To adapt with low outlay to different patient sizes, an X-ray mammography machine is disclosed, including a digital, substantially rectangular flat solid state detector delimited by two parallel longitudinal edges and two parallel, shorter transverse edges. The flat solid state detector can be adjusted in such a way that a longitudinal edge can be positioned parallel to a chest wall of a female patient in a first position, and a transverse edge can be positioned parallel to the chest wall of the female patient in a second position.
Abstract:
An X-ray diagnostic apparatus has an X-ray source that emits a diverging X-ray beam bundle that strikes a planar X-ray image converter at various angles, the converter having a substrate, image elements on the substrate arranged in a matrix with a semiconductor layer and a layer that absorbs X-ray beams. The X-ray-absorbing layer is fashioned thicker in the region at which a perpendicular ray of the X-ray beam bundle strikes the detector than in the region at which an oblique ray strikes, so that the reduction of the modulation transfer function in the region of an oblique beam incidence remains as small as possible.
Abstract:
A solid state image converter has light-sensitive cells arranged in a matrix, each cell formed by two oppositely-connected diodes, at least one diode in each cell being a photodiode, and has driver circuits for driving the diodes, that are connected between the respective row and column lines of the driver circuits. The driver circuits electrically reset the diodes individually or row-by-row by clocking. By briefly forward biasing, the individual photodiodes so that they are briefly brought into the conductive state, and are subsequently reverse biased. The solid state image converter can be continuously exposed with x-rays and is employable in an x-ray diagnostics installation.