Fujitsu Corporation

Shiro Takeda

Fumihiro Namiki

Minoru Nakajima

Isamu Yamada

Takaki Shimura

Shinji Tadaki

Kiyoto Matsui

Nagaaki Koshino

Kenichi Hayakawa

Nobuhiro Iwase

Yuuichi Sugiyama

Kazuhiro Watanabe

Kenji Kawabe

Hideyuki Hirano

Hiroshi Tokunaga

Toshisuke Kitakohji

Kenji Ishiwata

Yuji Nagai

Takahiro Haraki

Kunihiko Hayashi

Koji Serizawa

A method of fabricating an ultrasonic coupler to a specified configuration such that the ultrasonic coupler is fabricated by freezing and defrosting an aqueous solution containing a polymer. A surface of the fabricated ultrasonic coupler is made to be smooth. The ultrasonic coupler is fabricated using an ultrasonic coupler fabricating die including members each made of silicone rubber which varies in compliance with the expansion and the contraction of the aqueous solution. To fabricate the ultrasonic coupler, the aqueous solution containing a polyvinyl alcohol (PVA) is poured into the die. Then, the die is subjected to the process of cooling to below the freezing point and the process of recovery to room temperature so as to progress a bridging of the PVA, thereby progressing a gelling of the aqueous solution.

Method of fabricating ultrasonic coupler

An object of the present invention is to provide a novel method for generating 3-dimensional radiation images and, more particularly, a method for generating 3-dimensional radiation images capable of aligning completely registered 3-dimensional positions thereof. At least one 2-dimensional radiation image of a subject carried by a radiant ray which has passed through a subject is obtained by irradiating a radiant ray from a plurality of positions, which differ from one another, toward said subject, 2-dimensional pixel data which denotes pixel values at respective points on said 2-dimensional radiation image is obtained by repeatedly scanning an image in a main scanning direction which intersects a sub-scanning direction while sequentially moving in said specified sub-scanning direction on this 2-dimensional radiation image, and 3-dimensional pixel data which denotes the pixel values corresponding to 3-dimensional points inside said subject are obtained based on the 2-dimensional pixel data.

Method for generating 3-dimensional images

A digital X-ray apparatus forms a latent image of an object on a photostimulable phosphor plate as an energy distribution pattern using X-ray energy and reads the latent image using an excitation light beam. A plate, of a material which does not transmit the excitation light beam, has holes formed therein with photostimulable phosphor positioned in the holes, the photostimulable phosphor emitting a fluorescent light when irradiated by the excitation light beam, the emitted light beam gathered and a corresponding signal produced. The excitation light beam reflected from the photostimulable phosphor plate is also gathered and a signal responsive thereto also is produced. A method of production by stacking and bonding plural metal sheets having appropriate patterns of holes therein with the photostimulable phosphor and a transparent protection film layer thereon provides the structure of the photostimulable phosphor plate.

Photostimulable phosphor plate and photostimulable phosphor reader

A method for processing a radiographic image, containing: a step for calculating an average S.sub.m of original image data of an averaging area around each pixel of the radiographic image; and a step for transforming the original image data S of each pixel of the radiographic image to obtain a processed image data Q of each pixel in accordance with an equation, Q=S+.function.(S-S.sub.m), where .function.(S-S.sub.m) has a characteristic in at least one of first and second ranges of the difference S-S.sub.m, the difference S-S.sub.m is positive in the first range and negative in the second range, and according to the above characteristic, the absolute value .vertline.Q-S.vertline. varies in accordance with an increasing monotonic function of the absolute value .vertline.S-S.sub.m .vertline. when the absolute value .vertline.S-S.sub.m .vertline. is less than a predetermined value, and the absolute value .vertline.Q-S.vertline. varies in accordance with a decreasing monotonic function of the absolute value .vertline.S-S.sub.m .vertline. when the absolute value .vertline.S-S.sub.m .vertline. of the difference S-S.sub.m is more than the predetermined value. The above function .function.(S-S.sub.m) may be a non-odd function of the difference S-S.sub.m.

Radiographic image processing method wherein small variation of density

Acoustic coupler

A digital X-ray image processing apparatus for exposing an X-ray transmitted through an object onto a photostimulable phosphor plate, for scanning the photostimulable phosphor plate by using an excitation beam to obtain an X-ray image, and for reading the X-ray image. The digital X-ray image processing apparatus includes an image storage unit for storing the X-ray image used for an actual read when diagnosing the object and a histogram storage unit for storing a standard histogram of the X-ray image. The standard histogram is formed by an intensity and frequency of the X-ray. Also provided is a first monitor unit for displaying the standard histogram read out from the histogram storage unit and a read conditions determination unit for determining actual read conditions of the X-ray image based on a latitude of the intensity of the X-ray in the standard histogram.

Digital X-ray image processing apparatus

A digital X-ray image read apparatus having a correction function. The apparatus includes an excitation beam generation source for irradiating the excitation beam onto a photostimulable phosphor plate to generate a fluorescent light. A collection unit collects the fluorescent light of the photostimulable phosphor plate after excitation and a photomultiplier unit, connected to the collection unit, converts the fluorescent light to an analog electrical signal after multiplication. An analog-to-digital converter, connected to the photomultiplier unit, converts the analog electrical signal to a digital X-ray image signal. A correction unit, connected to the analog-to-digital converter, corrects the digital X-ray image based on a predetermined formula obtained from an amount of the fluorescent light and an afterglow thereof. An image memory connected to the correction unit, stores the X-ray image after correction.

Digital X-ray image read apparatus with a correction function

In a digital X-ray apparatus for exposing an X-ray transmitted through an object onto a photostimulable phosphor plate, for scanning the photostimulable phosphor plate by an excitation beam, and for obtaining an X-ray image, the digital X-ray apparatus includes a switch unit connected to a storage unit and switching between a standard photographing mode and an actual photographing mode; a correction coefficient conversion unit converting the X-ray image data to an image data having a standardized lightness; a first storage unit storing an initial correction coefficient after standardization in the correction coefficient conversion unit; a second storage unit storing a correction coefficient after standardization in the correction coefficient conversion unit; a detection unit comparing a value of the correction coefficient from the second storage unit with a value of the initial correction coefficient from the first storage unit, and detecting whether or not a difference between the value of the correction coefficient at each picture element and the value of the initial correction coefficient at each picture element exceeds a predetermined threshold value; and a generation unit displaying a number of abnormal picture elements detected by the detection unit and generating an alarm message when the number of abnormal picture elements exceeds a predetermined number, the predetermined number being defined by a ratio of the number of abnormal picture elements to the number of all the picture elements.

Digital X-ray apparatus

A patterning process is provided wherein a material to be etched is coated with a ladder type organosiloxane resin, the coated resin is irradiated with energy rays according to a desired pattern, the irradiated resin is subjected to a development treatment, and then, the material is etched by using the resin left after the development as a mask. The ladder type organosiloxane resin used is represented by the formula: ##STR1## wherein each R.sub.1 is independently selected from alkyl (Cl-6) groups, and phenyl and halophenyl groups, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are independently selected from hydrogen, alkoxy (Cl-3) groups, a hydroxyl group and alkyl (Cl-3) groups, and n is a number giving a Mw of about 1,000 to about 1,000,000. The patterning process can be advantageously employed for the production of electronic devices.

Patterning process using ladder-type organosiloxane resin and process

A silicone-type coating resin solution and a process for preparing the solution. This solution comprises 30 to 60 parts by weight of a hydrolytic condensation polymer of tetramethoxysilane or tetraethoxysilane (PDAS) having a weight average molecular weight of 1,000 to 6,000 and 70 to 40 parts by weight of a polysilsesquioxane prepolymer (PLOS) having a weight average molecular weight of 2,500 to 7,000 and in which each of 5 to 50 mole % of the organic groups attached directly to the silicon atoms is a phenyl group and the remaining organic groups are methyl, ethyl, or vinyl groups, these polymer components being dissolved in an organic solvent having a boiling point of not less than 110.degree. C. under a pressure of 760 mmHg. This solution is prepared by dissolving PDAS and PLOS in an organic solvent having a high boiling point and treating the resultant solution under a reduced pressure of not more than 5 mmHg.

Silicone-type coating resin solution

An improved electronic device having a multilayer wiring structure. An interlayer insulation layer or at least one of plural interlayer insulation layers, formed between metal wiring layers, is comprised of a cured coating of a ladder-type silsesquioxane polymer. A layer for protecting a metal wiring layer or layers may also be comprised of a cured coating of a similar polymer. The specified cured coating exhibits good resistance to heat and moisture and enhanced levelling on a pattern.

Electronic device having multilayer wiring structure

Electronic devices having a multilayer wiring structure, such as a semiconductor device, a bubble memory device and a thin film magnetic head, are manufactured by using, as an insulation layer-forming material, a thermosetting addition polymerization type polyimide, i.e., a polyimide possessing imide rings in the recurring unit thereof and the degree of polymerization of which increases, when cured, due to the radical reaction of the end group or groups. The polyimide insulation layer exhibits better levelling property than that of a conventional condensational type polyimide.

Method of manufacturing electronic device having multilayer wiring

An electronic circuit comprising a circuit substrate with electronic circuit elements bonded onto the circuit substrate with gaps between the circuit substrate and the respective electronic circuit elements has thermal conductive layers comprising an oxidatively curable resin filled into the gaps. The thermal conductive layers are produced by filling a varnish comprising an oxidatively curable resin into the gaps and exhibit excellent moist heat resistance and thermal conductive properties. The electronic circuit elements once mounted on the circuit substrate can easily be removed as required by releasing the bonding between the elements and the substrate.

Growing community of inventors

Sagamihara, Japan

Shiro Takeda