Canon Kabushiki Kaisha

Tdk Corporation

Hitachi, Ltd.

Hitachi Medical Corporation

Nec Display Solutions, Ltd.

Kosuke Ito

Hiroshi Satomi

Atsushi Inoue

Shinji Fukunaga

Akihiro Masukawa

Kenji Kasai

Kenichiro Matsuura

Jiro Izumi

Shinichi Kondo

Yuya Ishima

Masahiro Takizawa

Satoshi Igeta

Shingo Hattori

Naoto Fukasawa

Shinichi Sato

Yusuke Nagai

Toshiyuki Noguchi

Kunihiko Kawasaki

Kazuhiro Ebina

Yukihiko Oota

Kikuo Naito

Atsushi Furuta

Takashi Suzuki

Takayuki Abe

Takahiro Sato

Yoshihisa Soutome

Kazuya Tobita

Noriaki Hamachi

Seiichi Nakagawa

Shinji Kurokawa

Kouichi Kakuda

Junsi Lee

Hisako Nagao

Masayoshi Dohata

Hidenobu Umeda

Kiyotaka Fujita

Miyuki Kawamura

Keito Yasuda

Makoto Tamari

Youhei Iida

Atsushi Moriya

Yasushi Higuma

A multilayer coil component includes an element body including an end surface, a coil disposed in the element body, and an external electrode disposed on an end portion of the element body and connected to the coil. The external electrode includes a conductive resin layer. The conductive resin layer includes resin and a plurality of metal particles and is in contact with the end surface. The conductive resin layer includes a metal particle group. The metal particle group consists a plurality of first metal particles included in the plurality of metal particles, and the plurality of first metal particles is adjacent to the end surface and separated from the end surface.

Multilayer coil component

A method for manufacturing a multilayer coil componentincludes forming a plurality of insulator layers by a photolithography method using a photosensitive insulator paste, forming a plurality of conductors and via conductors by a photolithography method using a photosensitive conductive paste, a step of forming a first conductor, a step of forming a first insulator layer around the first conductor such that it becomes even with an upper surface of the first conductor, a step of forming a second insulator layer provided with a via hole on the first conductor and the first insulator layer, and a step of forming a second conductor connected to the first conductor via the via hole on the second insulator layer.

Method for manufacturing multilayer coil component

A multilayer coil component includes: an element body formed by stacking a magnetic body layer containing a plurality of metal magnetic particles of a soft magnetic material; a first coil disposed in the element body and configured to include a plurality of first coil conductors; a second coil disposed in the element body and configured to include a plurality of second coil conductors; a first external electrode to which one end portion of each of the first coil and the second coil is connected; and a second external electrode to which the other end portion of each of the first coil and the second coil is connected.

A method for producing a multilayer coil component includes forming, on a main face of a substrate, a first coil conductor extending along the main face having conductivity, forming a second coil conductor and a third coil conductor apart from each other in a direction in which the first coil conductor extends and each extending from the first coil conductor in a first direction orthogonal to the main face, and forming a fourth coil conductor electrically connected to an end of the second coil conductor opposite to the first coil conductor and extending along the main face. The forming the first coil conductor includes forming, on the main face, a first insulator layer provided with a first penetration portion having a shape corresponding to the first coil conductor and exposing a part of the main face, and forming, by plating, the first coil conductor in the first penetration portion.

Method for producing multilayer coil component

An electronic component according to an aspect of the present disclosure includes an element body and a terminal electrode. The element body includes an outer surface provided with a depression. The terminal electrode is disposed on the element body. The terminal electrode includes a first electrode portion and a second electrode portion. The first electrode portion is disposed in the depression. The second electrode portion protrudes from the depression. The second electrode portion is thicker than the first electrode portion.

Electronic component

A method for manufacturing an electronic-component includes a step of forming a laminate substrate including a plurality of laminates disposed in a direction intersecting with a lamination direction via a division portion by laminating a plurality of insulator layers, and a step of singulating the plurality of laminates by removing the division portion. The step of forming the laminate substrate includes a step of forming an insulator resist layer containing an insulating material on a base material, the insulating material being a constituent material of each of the insulator layers and a step of forming the insulator layer by curing the insulator resist layer by exposure, except for at least an insulator resist portion corresponding to the division portion. The division portion including the insulator resist portion is removed by development in the step of singulating.

Method for manufacturing electronic-component

In order to improve B1 non-homogeneity while reducing a local SAR in an object, particularly, in a human tissue during MR imaging, the present invention is characterized in that each of a plurality of irradiation channels is controlled on the basis of RF shimming parameters corresponding to the plurality of irradiation channels, and, in a case of performing imaging sequence of irradiating an object with an RF magnetic field, there is the use of the RF shimming parameters obtained by imposing a constraint condition on at least one of a plurality of principal components obtained through principal component analysis on the RF shimming parameters.

Magnetic resonance imaging apparatus and method for setting RF shimming parameters

To obtain the irradiation magnetic field distribution of each channel of a multichannel transmission RF coil at high speed, for multiple channels which are all or some of the channels of the transmission coil, an image is acquired by irradiation with one channel or a combination of two or more channels, an irradiation magnetic field distribution upon irradiation with all of the multiple channels is acquired, and the irradiation magnetic field distribution of each channel is calculated using the acquired irradiation magnetic field distribution of all of the multiple channels and the phase difference calculated from the image of each channel and the image of all of the multiple channels.

Magnetic resonance imaging apparatus and irradiation magnetic field distribution measurement method

The present invention provides an RF shimming method for a nuclear magnetic resonance imaging apparatus comprising: a transmission coil having a plurality of channels that respectively transmit high frequencies to an object and a calculation unit performing RF shimming calculation that determines at least one of amplitudes and phases of the high frequencies to be transmitted respectively to a plurality of the channels so as to improve homogeneity of a high-frequency magnetic field distribution generated by the transmission coil and reduce a specific absorption ratio of the object. Objective function parameters for setting the objective function are determined according to contribution to the SAR for each of the channels during the RF shimming calculation based on the objective function and the restriction condition.

Nuclear magnetic resonance imaging apparatus and RF shimming method

An imaging unit of an MRI apparatus collects NMR signals using high frequency pulses including a pre-RF pulse exciting a first region and an excitation RF pulse exciting a second region different from the first region. A shimming parameter calculation unit calculating a shimming parameter for adjusting a radiation magnetic field distribution generated by the high-frequency pulses radiated from a plurality of channels sets different shimming parameters in the pre-RF pulse and the excitation RF pulse. The imaging unit performs imaging using the pre-RF pulse and the excitation RF pulse adjusted with the different shimming parameters.

Magnetic resonance imaging apparatus, RF shimming method, and magnetic resonance imaging method

In order to further improve the accuracy of SAR estimation by accurately estimating, for each object, the energy of RF pulses absorbed into a part of an object, for example, a head, on the basis of measurement performed before main imaging, a nuclear magnetic resonance imaging apparatus estimates a head SAR by calculating a signal Sgenerated from the head and a signal Sgenerated from the whole object, calculating the ratio &#x3b1; between the signal generated from the head and the signal generated from the whole object, and calculating the energy Eabsorbed into the head using the ratio of the signals.

Magnetic resonance imaging apparatus and SAR estimation method

There is provided an MRI apparatus capable of measuring the B1 distribution of an RF transmission coil in a short time with high accuracy. In order to realize this, imaging means of the MRI apparatus includes a B1 distribution measurement sequence that includes an application of a pre-pulse by RF radiation means and a plurality of signal acquisition sequences with different elapsed time (TI) from the pre-pulse. The signal acquisition sequence uses a pulse having a small flip angle as an RF pulse and is executed before the longitudinal relaxation after the pre-pulse ends. Calculation means calculates the B1 distribution of the RF radiation means using image data with different TI acquired in the respective signal acquisition sequences.

Magnetic resonance imaging apparatus and method for measuring irradiation magnetic field

Desired imaging is performed within the SAR restriction without changing the imaging conditions set in advance when SAR exceeds an upper limit. In order to do so, in imaging of an object performed by combination of a plurality of pulse sequences, a SAR graph showing a temporal change in the predicted SAR value of each pulse sequence is displayed. When the predicted SAR value of the pulse sequence is the same as or exceeds the upper SAR limit, the exchange of such pulse sequences or the insertion of a waiting time is performed.

Magnetic resonance imaging apparatus and SAR adjustment method

A magnetic resonance imaging apparatus comprises: static magnetic field generation means which generates a static magnetic field in an imaging space where an object to be examined is placed; gradient magnetic field generation means which generates a gradient magnetic field in the imaging space; high-frequency magnetic field generation means which generates a high-frequency magnetic field in the imaging space; calculation means which calculates an amount of the electromagnetic wave absorbed by the object when the high-frequency magnetic field is irradiated to the object; and a measurement means which measures a characteristic of the high-frequency magnetic field generation means. The calculation means calculates the amount of the electromagnetic wave absorbed by the object according to the characteristic of the high-frequency magnetic field generation means measured by the measurement means.

Magnetic resonance imaging apparatus

Projector

Growing community of inventors

Tokyo, Japan

Kosuke Ito