Abstract:
These and other objects of the present invention are achieved by an apparatus and process for evaluating an image-wise exposed storage film positioned about a cylindrically-shaped member and linearly passed by a slot for interrogation by a laser light beam wherein a processing assembly (laser beam and pentraprism) is co-axially disposed within a processing chamber formed by the cylindrically-shaped member effecting a size reduction of the unit and increased clarity of the resultant image, and wherein the processing assembly includes a plate member disposed for rotation in a plane perpendicular to the axis of the processing chamber and having a pentaprism and a luminescence light sensor positioned proximate a contact point of the interrogating light beam with the storage film and further including converter electronics wherein after interrogation, the image scanned is digitally archived in a central processing unit.
Abstract:
A storage phosphor reader apparatus reads exposed storage phosphors. The reader includes an outer frame assembly including a cassette handling assembly, located on the upper part of the outer frame assembly, for handling vertically oriented cassettes; an inner frame assembly; a first set of vibration isolators for mounting the inner frame assembly on the outer frame assembly, so as to minimize vibrations caused in the outer frame assembly from being transmitted to the inner frame assembly; a storage phosphor scanning assembly; and a second set of vibration isolators for mounting the scanning assembly on the inner frame assembly, so as to minimize vibrations caused in the inner frame assembly frame from being transmitted to the scanning assembly.
Abstract:
An x-ray diagnostic apparatus and methods performs Real-Time Digital Radiography with particular application in dental x-ray imaging modalities, such as Orthopantomography, Scannography, Linear Tomography and Cephalography, by using a versatile and modular electronic unit, featuring ultra fast computation capability to serve diversified image sensor typology and scanning modality. In Digital Orthopantomography and Scannography, a plurality of tomographic images at different depths of the jaw can be generated, based on the pre-selection made by the user interface. The image processing unit utilizes for the tomo-synthesis of the diagnostic image an accurate and economic digital simulator of the radiographic film speed, including a digital frequency synthesizer fed with film cassette speed digital input and high resolution clock signal, ensuring accurate and reproducible phase continuity of the output frequency signal. It also introduces an automatic adaptation of the frame acquisition rate in frame transfer mode, based on the actual speed of the cassette unit. By this method the dynamic of the exposure signal is reduced, and a better optimization of the signal response of the x-ray detector is achieved.
Abstract:
An autofeeder and media object digitization system. A receptacle for media objects is coupled to align a first wall with a clip to hold the media object. A suction device forming part of the first wall sucks a media object against a suction plate. The suction plate then moves the media object into engagement with the clip. The clip is driven to move the media object past a scanning window. A release lever or the clip is triggered to release the media object after it has passed the scanning window.
Abstract:
A liquid crystal display includes a casing, a frame mounted in the casing, a support mounted in the frame, a motor, and a tray. The casing includes a front plate for holding a display screen and a rear cover attached to the front plate. The rear cover includes a lower casing portion having a side opening. The support mounted is slidable through the side opening so as to be located between an extended position out of the casing and a retracted position in the casing. The support includes a receiving space for receiving a backlight and a drive circuit for the backlight. The motor moves the support to the extended position or the retracted position. The tray is removably received in the receiving space of the support and includes a portion for receiving an X-ray film.
Abstract:
A digitizing scanner particularly for scanning transparent films such as X-rays provides an improved illuminator for transmitting light through the film. The illuminator defines a line array of a plurality of individually calibrated and controlled LEDs. The LEDs are calibrated by determining their relative points of projection on a CCD camera array. The camera array scans the LEDs and adjusts them individually to produce a predetermined illumination pattern from the group. The adjustment occurs over a plurality of cycles that address cross-talk between LEDs in the array. The camera includes anti-reflection elements to minimize bounce-back of image light and noise suppression circuitry to reduce low-level signal noise. A central processing unit, interconnected with the camera assembly includes a pixel averager to reduce the inherent resolution of the CCD to a desired level and to attenuate further noise. The scanner can include an illuminator for illuminating a scannable opaque bar-code strip and size-measurement circuitry for determining the relative size and location of the scanned image.
Abstract:
In a radiographic image reading method of reading a radiographic image on a radiographic image conversion panel and for obtaining radiographic image information; the adiographic image reading method includes steps of: reading panel discriminating information corresponding to the radiographic image conversion panel, thereby obtaining information regarding the radiographic image conversion panel; and applying image processing for the radiographic image information based on the information regarding the radiographic image conversion panel.
Abstract:
In a radiation image read-out apparatus, a stimulable phosphor sheet, on which a radiation image of an object has been stored, is scanned with a laser beam of a predetermined output power, which causes the stimulable phosphor sheet to emit light in proportion to the amount of energy stored thereon during its exposure to radiation, and the emitted light is photoelectrically detected with a predetermined sampling time. A response speed r �sec! of the stimulable phosphor constituting the stimulable phosphor sheet, the laser beam output power p �W!, a picture element size s �m!, and the sampling time t �sec! are set such that they may satisfy Formulas (1), (2), and (3): r/(s.multidot.t) 1 (3) The radiation image having been stored on the stimulable phosphor sheet is thereby read out quickly and such that a reproduced image having good image quality may be obtained.
Abstract:
An image read-out apparatus comprises a readout section for scanning a recording medium, on which an image has been recorded, in a main scanning direction and a sub-scanning direction, and thereby generating an image signal which has been sampled with a predetermined sampling density from the image, and an input section from which information about the type of the image and a high-density sampling instructing signal can be entered. The read-out section is provided with a sampling density adjusting device, which adjusts the predetermined sampling density so that it becomes equal to a sampling density corresponding to the type of the image in cases where only the information about the type of the image has been entered from the input section, and which adjusts the predetermined sampling density so that it becomes equal to a high sampling density, which is higher than the sampling density corresponding to the type of the image, in cases where the high-density sampling instructing signal has been entered from the input section.
Abstract:
A medical image reproducing system comprises a plurality of medical image signal feeding apparatuses, which feed out image signals representing medical images, and a single image reproducing and recording apparatus, which is connected to the plurality of the medical image signal feeding apparatuses, and which reproduces an image from each of the image signals fed out from the medical image signal feeding apparatuses and records the image. Each medical image signal feeding apparatus is provided with a device for generating an identification signal representing the resolution, with which the picture elements in an image represented by an image signal fed out from each medical image signal feeding apparatus are arrayed. The identification signal is fed into the image reproducing and recording apparatus together with the corresponding image signal. The image reproducing and recording apparatus is provided with a device for reading an identification signal and setting the resolution, with which the picture elements in a reproduced and recorded image are arrayed, to be equal to the resolution represented by the identification signal, which has thus been read.