Hitachi, Ltd.

The University of Tokyo

Hitachi Medical Corporation

Yukari Yamamoto

Atsushi Maki

Tsuyoshi Yamamoto

Masashi Kiguchi

Masahiro Takizawa

Hisaaki Ochi

Hiroki Sato

Yo Taniguchi

Toru Shirai

Shinichiro Umemura

Takeshi Hoshino

Fumio Kawaguchi

Shingo Kawasaki

Yukiko Hirabayashi

Takashi Nishihara

Michiyuki Fujiwara

Tsuneaki Kawaguchi

Yujin Tsukada

Hideo Kawaguchi

Manabu Yanagimoto

Takushige Katsura

Kuniyoshi L Sakai

Chizuko Sasanabe

Akiko Obata (nee Nakajima)

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

To reduce the number of erroneous operations, on an operation apparatus conducting mutually different operations such as opening and closing operations, a concretized human pictogram indicating mutually different state changes such as state changes represented by use of a face with opened eyes and a face with closed eyes associated with operation signals assigned to a pair of operation switches and a pictogram in which the human pictogram is combined with an operation pictogram representing a state in which a door concretizing an operation target to operate in response to an operation signal is opened or is being completely closed are respectively attached to the operation switches disposed adjacent to each other.

Operation device and elevator apparatus with operation device

A living body information signal processing system () combining organically a living body optical measurement apparatus and a brain wave measurement apparatus, the living body optical measurement apparatus () in which inspection light of from visible to near infrared is irradiated on a head portion of a subject () and the penetration light is received and which measures an optical characteristic variation induced by a brain activity inside the head portion as a living body optical signal and the brain wave measurement apparatus () which measures an electrical characteristic variation induced by a brain activity inside the head portion of the subject as a brain wave signal, is provided with a probe device () used for both apparatus; and a living body information signal processing and displaying device () which displays the living body optical signal corresponding to respective measurement positions from the living body optical measurement apparatus and the brain wave signal corresponding to respective measurement positions from the brain wave measurement apparatus on a common display device while correlating the respective measurement positions each other, thereby, with the system comprehensive observation of both data can be achieved.

Living body information signal processing system combining living body optical measurement apparatus and brain wave measurement apparatus and probe device used for the same

The present invention provides a measurement system and an image processing system for quantitatively figuring out the fiber bundles which are passing through any VOI. A static magnetic field and an RF signal are applied to a subject, and a nuclear magnetic resonance signal is received from the subject (). Diffusion tensor is calculated from the nuclear magnetic resonance signals (). As to a target area for receiving the nuclear magnetic resonance signal from the subject, fiber bundles passing through multiple predetermined origins, respectively, are extracted in a form of a group of coordinate points for each of the fiber bundles, based on the diffusion tensor calculated by the calculating means (). At least one VOI is set for the target area for receiving the nuclear magnetic resonance signal (). Out of the multiple fiber bundles extracted by the fiber bundle extracting means, the fiber bundles having at least one coordinate point of the group of coordinate points being included in the VOI are discriminated and the number of which is counted ().

NMR measurement system and NMR image processing system for neural fiber bundles with volume of interest (VOI) optimization

In a probe positioning technology, an optical bioinstrumentation includes a region selecting unit that is used to delineate a region of interest in an anatomical image of a subject, a computing unit that determines a recommended probe position according to the region of interest, a probe position sensor that detects a current probe position, a computing unit that calculates the distance between the recommended probe position and the current probe position, and an alarm device that generates an alarm sound or the like when the distance falls within a predetermined range. Moreover, the optical bioinstrumentation for living body further includes a memory unit in which the probe position is saved together with measurement data.

Optical bioinstrumentation for living body

A nuclear-magnetic-resonance inspection apparatus that enables an examiner to designate directly a section of a subject to be imaged. The NMR inspection apparatus has a section-designating unit containing reference objects A, B, and C that can be set at three reference points, and can be held in the hand of an examiner to be moved and operated in close proximity to the subject, wherein a prescribed part of a plane including the reference objects set at up to three reference points is the section of the subject to be imaged. While watching the subject, the examiner can directly designate a section to be imaged. Thus, diagnoses can be made easily and quickly.

Inspection apparatus using nuclear-magnetic-resonance

Growing community of inventors

Kunitachi, Japan

Yukari Yamamoto