Hitachi Medical Corporation

Hitachi, Ltd.

Canon Kabushiki Kaisha

Asm Japan K.k.

Adv Antest Corporation

Fujifilm Healthcare Corporation

Lion Corporation

Ricoh Company, Ltd.

Olympus Optical Company, Ltd.

Masahiro Takizawa

Tetsuhiko Takahashi

Yasuhiro Kamada

Yo Taniguchi

Toru Shirai

Kosuke Ito

Hisaaki Ochi

Hikaru Hanada

Masaei Suwada

Akio Yamada

Takayuki Abe

Yoshitaka Sato

Masaki Kurokawa

Shinichi Hamaguchi

Hisako Nagao

Jun Matsumoto

Hideyuki Takahashi

Yoshihisa Soutome

Hideta Habara

Shinji Kurokawa

Shigeki Nishina

Ryota Satoh

Hiroyuki Takeuchi

Junichi Kobayashi

Takayuki Yagi

Yoshiaki Sato

Masayuki Takahashi

Kenji Makino

Yasushi Matsuno

Yukihiro Hayakawa

Suguru Yokosawa

Hiroyuki Itagaki

Takeshi Yatsuo

Genzo Momma

Yoshinobu Umeda

Shinji Sugatani

Miyuki Kawamura

Takashi Wada

Kuniharu Oka

Masaharu Ono

Akari Matsumura

Kazuyoshi Ishigaya

Satoru Noguchi

Teruhide Nishino

Minoru Soma

Takashi Nishihara

Akari Yasukawa

Kei Fujita

Tomohiro Goto

Yasushi Kawasumi

Hisakatsu Tanaka

Yoshio Fukuda

Ryohei Yamada

Yoshihisa Sotome

Yukari Yamamoto

Masayuki Akagawa

Kenta Sakuragi

Yasuo Kawata

Atsushi Kuratani

Kosuke Hirai

Tsutomu Makino

Kousuke Itou

Ryota Sato

Naoya Sakaguchi

Nobuyuki Yoshizawa

Tomohiro Gotou

Keisuke Nishio

Takashi Hagino

Yukio Nakagawa

Shoji Konishi

Norimasa Nakai

Kazuho Kamba

Miyuki Takahashi

Kunio Ootani

Ryuma Iwashita

Hiroto Arai

Takayuki Kamura

Ayaka Ikegawa

Hidehisa Akimaru

Takehiro Ootsuka

Testuhiko Takahashi

To calculate a high-resolution coil sensitivity distribution that does not depend on a shape or a structure of a subject with high accuracy. An MRI apparatus of the invention includes: a measurement unit that includes a reception coil including a plurality of channels, a measurement unit that measures a nuclear magnetic resonance signal of a subject for every channel of the reception coil; and an image computation unit that creates an image of the subject by using a sensitivity distribution for every channel of the reception coil, and a channel image obtained from the nuclear magnetic resonance signal measured by the measurement unit for every channel. The image computation unit includes a sensitivity distribution calculation unit that calculates a sensitivity distribution on a k-space for every channel by using the channel images and a composite image obtained by combining the channel images.

Magnetic resonance imaging apparatus, sensitivity distribution calculation method, and sensitivity distribution calculation program

A magnetic resonance imaging apparatus captures a morphology image and a function image that are captured with respect to an equal imaging region of an object under examination. Processing for deforming the morphology image is performed using a deformation parameter and moving positions of structural objects included in the morphology image to respective positions of structural objects of a previously determined standard morphology. Then, the function image is deformed using a value of the deformation parameter used in deforming the morphology image to cause a position of a region included in the function image to coincide with a position of a corresponding region of the standard morphology or by using the standard morphology in an opposite direction using the value of the deformation parameter to cause a position of a region of the structural object thereof to coincide with a position of a corresponding region included in the function image.

Magnetic resonance imaging apparatus that deforms a morphology image to coincide with a function image, image processing apparatus, and image processing method

For a complex image to be complexly added, appropriate phase correction is executed by a simple method to prevent occurrence of an artifact in a signal region and to reduce noise in a background region. Two or more types of smoothing processing with different smoothing degrees are executed on a phase image of the complex image to obtain two or more types of smoothed phase images having different smoothing degrees. A weight for each of these smoothed phase images is calculated based on a signal value (SNR) of an intensity image, and addition is performed by a weight for each signal value to obtain a smoothed phase image for correction. After a phase of the complex image is corrected using the smoothed phase image, a phase-corrected complex image is complexly added. As a result, phase correction equivalent to phase correction in which a smoothing degree is weakened in the signal region and a smoothing degree is strengthened in the background region is realized.

Magnetic resonance imaging device, image processing device, and image processing method

An image forming apparatus that is capable of wireless communication with an operation device and that can be operated by the operation device via the wireless communication, the image forming apparatus comprising:

Image forming apparatus

To provide a technique in which, in imaging using an EPI method, an occurrence of an artifact when phase correction is performed for each channel is avoided and the phase correction is accurately performed. A common phase correction value to be applied to data of all channels is calculated using pre-scan data of each channel. The common phase correction value is obtained by combining a difference phase obtained for each of the channels. The difference phase is obtained by complex integration, while an absolute value of each channel is maintained as it is. The combination is performed by complex average, and averaging processing according to a weight of the absolute value is performed. The occurrence of an artifact can be prevented by using the common phase correction value, and robust phase correction can be performed by including the weight of the absolute value.

Magnetic resonance imaging apparatus, image processing apparatus, and phase correcting method

To provide a three-dimensional printing device that irradiates approximately the same ranges on the surface of a powder layer simultaneously with a plurality of electron beams having different beam shapes. An electron beam columnof the three-dimensional printing deviceincludes a plurality of electron sourcesincluding electron sources having anisotropically-shaped beam generating units, and beam shape deforming elementsthat deform the beam shapes of electron beams output from the electron sourceson a surfaceof a powder layer. A deflectorincluded in the electron beam columndeflects an electron beam output from each of the plurality of electron sourcesby a distance larger than the beam space between electron beams before passing through the deflector

Electron beam column for three-dimensional printing device, three-dimensional printing device, and three-dimensional printing method

An image forming system includes an image forming apparatus configured to form an image on a sheet, a plurality of accessory apparatuses arranged side by side along a conveyance direction of the sheet, and a base station configured to wirelessly communicate with the image forming apparatus and the plurality of accessory apparatuses. The image forming apparatus includes one or more controllers configured to function as (i) a unit configured to acquire, from the base station, information that the base station acquires by wirelessly communicating with the plurality of accessory apparatuses, and (ii) a unit configured to output screen information for registering information about an arrangement order of the plurality of accessory apparatuses, based on the information acquired from the base station.

Image forming system and image forming apparatus

In an image acquired by a plurality of receiver coils with the use of MRI, separated images are obtained by separating spatially overlapping signals according to PI method, and noise in the separated images is eliminated with a high degree of precision. A complex image spatially overlapping is measured from nuclear magnetic resonance signals received by a plurality of receiver coils, and spatially overlapping signals are separated and a plurality of separated images are calculated, by using sensitivity information of the plurality of receiver coils. Then, noise is eliminated based on a correlation of noise mixed between the separated images.

Magnetic resonance imaging apparatus and noise elimination method

Imaging failure of a positioning image due to the difference in the position or the size of a subject placed in the examination space is prevented, and accordingly, the extension of the examination time is prevented. A pre-scan for appropriately setting the imaging position for positioning imaging is automatically performed prior to the positioning imaging and the main imaging of an MRI apparatus, and a region where an examination part of a subject is present (the extent of the examination part) is detected using the measurement data. By using the detected extent of the examination part, it is possible to subsequently determine the imaging position or calculate the scan parameters used for imaging.

Magnetic resonance imaging apparatus and control program therefor

An information processing apparatus operating in a first power state, a second power state, a third power state, and fourth power state includes a power control unit configured to the third power state to the fourth power state when a first shift time is measured, and a control unit configured to, when the power control unit has shifted the power state of the information processing apparatus from the third power state to the first power state, clear the measured time and not to, when the power control unit has shifted the power state of the information processing apparatus from the third power state to the second power state, clear the measured time clear.

Information processing apparatus, method for controlling power state shift and clearing or not clearing a shift time measured

Provided is a three-dimensional laminating and shaping apparatusincluding a column unitthat is configured to output an electron beam EB and deflect the electron beam EB toward the front surface of a powder layer, an insulating portion that electrically insulates a three-dimensional structurefrom a ground potential member, an ammeterthat is configured to measure the current value indicative of the current flowing into the ground after passing through the three-dimensional structure, a melting judging unitthat is configured to detect that the powder layeris melted based on the current value measured by the ammeterand generate a melting signal, and a deflection controllerthat is configured to receive the melting signal to determine the condition for the irradiation with the electron beam.

Three-dimensional laminating and shaping apparatus and laminating and shaping method

The storage comprises a first bridge, a second bridge that can be connected to the first bridge, a first storage device that can be connected to the first bridge, and second and third storage devices that can be connected to the second bridge. If a command that has been received from a main controller is a command not corresponding to the first storage device and an access destination of the main controller is the second bridge, a controller transmits a command corresponding to the received command to the second bridge. In contrast, if the command that has been received from the main controller is a command corresponding to the first storage device, the controller transmits the command corresponding to the received command to the second bridge or the first storage device.

Storage system and control method thereof

Provided is a novel aliasing elimination technique capable of suppressing noise amplification in an aliasing elimination calculation in parallel imaging and the like. The technique utilizes the fact that a phase of an image (a true image that is one of a plurality of images) to be separated from a main captured image obtained with the plurality of images superimposed is basically the same as a phase of an image obtained at a low resolution, to obtain a phase difference between a phase of a low-resolution image and a phase of the main captured image, and separates the true image by calculation using the phase difference and a pixel value of the main captured image. At this time, the low-resolution image is obtained by each of a plurality of receiving coils, and the true image is calculated after multiplying a plurality of low-resolution images by a complex number that minimizes the noise amplification.

Magnetic resonance imaging apparatus and image processing method

An image corrected for body motion with high accuracy in a short time when performing retrospective body motion correction on an MRI image is provided, and the time from imaging to image display is reduced. A body motion corrector of an MRI apparatus has a weighting factor calculator that calculates a three-dimensional weighting factor based on signals received by multi-channel receive coils. A processing space converter converts three-dimensional frequency space data of a measurement signal and the three-dimensional weighting factor respectively into hybrid space data and a two-dimensional weighting factor. A synthesized signal calculator calculates a synthesized signal by convolution integration of the hybrid space data and the two-dimensional weighting factor; and a body motion position detector detects a body motion occurrence position in the hybrid space from the hybrid space data and the synthesized signal.

Nuclear magnetic resonance apparatus and body motion correction method

Provided is a three-dimensional laminating and shaping apparatusincluding a column unitthat is configured to output an electron beam EB and deflect the electron beam EB toward the front surface of a powder layer, an electron detectorthat is configured to detect electrons that may be emitted in a predetermined direction from the front surface of the powder layerwhen the powder layeris irradiated with the electron beam EB, a melting judging unitthat is configured to generate a melting signal based on the strength of the detection signal from the electron detector, and a deflection controllerthat is configured to receive the melting signal to determine the condition of the irradiation the electron beam.

Growing community of inventors

Tokyo, Japan

Masahiro Takizawa