J. Morita Manufacturing Corporation

Nihon University

J. Morita Mfg. Corporation

Kabushiki Kaisha Morita Seisakusho

Hamamatsu Photonics Kabushiki Kaisha

Hideki Yoshikawa

Masakazu Suzuki

Tomoyuki Sadakane

Yoshinori Arai

Makoto Honjo

Takahiro Yoshimura

Yoshito Sugihara

Akifumi Tachibana

Susumu Kirimura

Masanori Otsuka

Yutaka Ito

Takeshi Hayashi

Yuu Nishimura

Junichi Furukawa

Kazuhisa Miyaguchi

Teruji Nakai

Ryuichiro Niizeki

Masanobu Yoshida

Hitoshi Asai

Tetsuzo Ito

Masaya Tatsumi

Tetsuhiko Muraki

Masato Wada

Noriyuki Tanaka

Kuniomi Murakami

Susumu Kimura

An X-ray detection unit includes an X-ray detector that receives and detects the X-ray beam transmitted through the head. The support supports the X-ray generation unit and the X-ray detection unit. A drive mechanism moves the support such that the X-ray generation unit and the X-ray detection unit turn about an axis extending in a direction parallel to an apparatus vertical direction and around the head. An X-ray generation source moving unit moves the X-ray generation source in the apparatus vertical direction. The X-ray imaging apparatus increases a spread in the apparatus vertical direction of the X-ray beam when the X-ray generation source is located on an apparatus upper side, and decreases a spread in the apparatus vertical direction of the X-ray beam when the X-ray generation source is located on an apparatus lower side.

X-ray imaging apparatus

A dental observation device by which, without displaying, in an overlapping manner, a visible light image of an image-capturing site in an oral cavity captured by a 3-D camera and 3-D image information on the image-capturing site in the oral cavity acquired in advance, an invisible portion in the visible light image is easily recognized. An observation system includes a visible light 3-D camera; a relative position calculator; a 3-D information storage storing 3-D image information acquired in advance; an image display displaying, side by side, a 2-D captured image captured by the visible light 3-D camera and 2-D converted image based on the 3-D image information corresponding to the surgical operation target site; and a display direction adjuster displaying, in the image display, the 2-D converted image in a predetermined direction on the basis of the image-capturing direction detected by the relative position calculator.

Dental observation device and method for displaying dental image

A panoramic X-ray imaging apparatus includes: an X-ray generating unit; an X-ray detecting unit; a support that supports the X-ray generating unit and the X-ray detecting unit; a drive mechanism that turns at least the X-ray generating unit and the X-ray detecting unit by driving the support; a displacement mechanism that adds movement including a displacement component in a direction different from the turning to the X-ray detecting unit; a subject holding unit that holds an imaging subject; a turning controller that controls the turning by a drive mechanism and the displacement mechanism. The turning controller controls the drive mechanism and the displacement mechanism so as to add the movement avoiding the contact with the shoulder of the imaging subject during the turning of the X-ray generating unit and the X-ray detecting unit by the drive mechanism during the panoramic X-ray imaging.

Panoramic X-ray imaging apparatus

A learning model provided in a segmentation device is a learning model which is generated using training data such that segmentation data of a feature region is output when at least one of projection data and reconfiguration data acquired by an imaging device or data derived from the at least one of projection data and reconfiguration data is input.

Segmentation device and method of generating learning model

A learning model provided in a segmentation device is a learning model which is generated using training data such that segmentation data of a biologically important region is output when data of a constituent maxillofacial region is input.

Segmentation device

An X-ray photography apparatus including: a turning arm that supports an X-ray generator and an X-ray detector which are opposed to each other so that the head of a patient can be interposed therebetween, and a moving mechanism that includes a turning part and a moving part. The turning part turns the turning arm about a turning axis with respect to the head. The moving part moves the turning arm relative to the head in a direction perpendicular to the turning axis. The X-ray photography apparatus also includes: an image processor that generates an X-ray image, a photographic region designation part that designates part of a row of teeth along a dental arch as a pseudo intraoral radiography region, and an X-ray forming mechanism that changes the irradiation direction in which the head is irradiated with an X-ray relative to the axial direction of the body axis of the patient.

X-ray photography apparatus

A first position setting unit receives an operation to designate a position in a mesiodistal on a panoramic tomographic image displayed on a display, and sets a first position on a curved section based on the designation operation. The fluoroscopic imaging information providing unit provides information irradiating a subject with an X-ray beam along a direction having a component of a tangential direction at the first position of the curved section to execute fluoroscopic imaging acquiring a fluoroscopic image to a main body. A second position setting unit receives an operation to designate a position in a buccolingual direction on the fluoroscopic image displayed on the display, and sets a second position in the buccolingual direction based on the designation operation.

CT imaging apparatus, information processing apparatus, CT imaging method, information processing method, and recording medium

An X-ray imaging apparatus receives mode selection using a mode selection receiving unit including a mode setting unit and an operation display. When a CT mode is selected by the mode selection receiving unit, an X-ray beam shape adjuster shapes an X-ray beam into an X-ray cone beam in which a center beam that is a center of the X-ray beam is orthogonally incident on a body axis of a head. When a panoramic mode is selected, the X-ray beam shape adjuster shapes the X-ray beam into an X-ray narrow beam in which the center beam is incident on the body axis from obliquely below to obliquely above, the X-ray narrow beam having a length in a direction of the body axis.

X-ray imaging apparatus and x-ray imaging method

The present invention has an object of providing an X-ray CT imaging device which can direct X-ray to an area of interest appropriately even when, for example, the height of the area of interest with respect to the X-ray detector, which is revolving, varies with respect to the revolution direction, and thus can reduce the amount of unnecessary exposure to the X-ray and can perform X-ray imaging of the area of interest with certainty. In an X-ray CT imaging device for performing X-ray CT imaging of a CT imaging area of a subject, during the X-ray CT imaging when a revolving arm is revolving, the expansion in a length direction of an X-ray cone beam, which is to be restricted by length direction blocking plates, is adapted to the shape of the CT imaging area in accordance with the revolution position of the revolving arm.

X-ray CT imaging device

An X-ray generator generating an X-ray cone beam and a two-dimensional X-ray detector detecting the X-ray cone beam are supported by a support arm while facing each other, and the X-ray generator and the two-dimensional X-ray detector are turned with an object interposed therebetween. A filter constitution body is disposed between the two-dimensional X-ray detector and the object. Filters having X-ray beam energy distribution conversion characteristics different from each other are arrayed in the filter constitution body. In X-ray photography, a filter constitution body moving mechanism is moved in a direction along a detection surface of the two-dimensional X-ray detector such that the filter constitution body traverses the X-ray cone beam in turning the support arm.

X-ray photography apparatus, image processing device, and X-ray photography method

An X-ray CT apparatus including an X-ray generator, an X-ray detector, a support part, and a base that rotatably supports the support part. The support part includes an exterior part made of carbon fiber reinforced plastic, and the X-ray generator and the X-ray detector are supported by the exterior part while being opposed to each other. The base rotatably supports the support part such that the X-ray generator and the X-ray detector turn about a turning axis.

X-ray CT apparatus

An X-ray CT photographic apparatus including: a beam shaping mechanism that regulates an irradiation range of an X-ray generated from an X-ray generator and shapes the X-ray into an X-ray cone beam; and a main body controller that changes a read region, where an X-ray detection signal is read in the X-ray detector, according to the irradiation range of the X-ray cone beam. The main body controller changes the irradiation range of the X-ray cone beam to an x-axis direction during an X-ray CT photography such that only a set CT photographic region is irradiated with the X-ray cone beam according to the set CT photographic region input through a CT photographic region setting unit. The main body controller changes a read region in an X-ray detector with respect to the x-axis direction in a detection surface of the X-ray detector during the X-ray CT photography.

X-ray CT photographic apparatus

According to an X-ray imaging device for performing CT imaging, a main body control section controls at least one of an X-ray revolution plane formed by an X-ray cone beam along with the revolution of a revolving arm and a revolution range of the revolving arm in accordance with a CT imaging area accepted by an imaging area setting screen. Such control is performed in order to decrease X-ray radiation to a high sensitivity site in the area that revolves during the CT imaging, the high sensitivity site being positionally set in a biological body as a site that is sensitive to X-rays.

X-ray CT imaging device and X-ray CT imaging method

An X-ray photography apparatus including: a turning arm that supports an X-ray generator and an X-ray detector while the X-ray generator and the X-ray detector are opposed to each other so that a head of a patient can be interposed therebetween; and a moving mechanism that turns the turning arm about a turning axis with respect to the head and moves the turning arm in a direction perpendicular to the turning axis with respect to the head. The X-ray photography apparatus further includes: an image processor that generates an X-ray image based on an electric signal output from the X-ray detector; and a photographic region designation receiving part that designates part of a row of teeth along a dental arch as a pseudo intraoral radiography region. The image processor generates plural tomographic images by applying convolution and filtered back projection to X-ray image data obtained by pseudo intraoral radiography.

Growing community of inventors

Kyoto, Japan

Hideki Yoshikawa