Toshiba Medical Systems Corporation

Kabushiki Kaisha Toshiba

Shinichi Kitane

Yuichi Yamashita

Mitsue Miyazaki

Nobuyasu Ichinose

Yoshimori Kassai

Tokunori Kimura

Yoshio Machida

Masashi Ookawa

Isao Tatebayashi

Masahiko Hatanaka

Kazuhiro Sueoka

A magnetic resonance imaging apparatus of an embodiment has a setting unit configured to set a pulse sequence having a pre-pulse for fat suppression and a pulse train for data acquisition for acquiring echo data for image reconstruction, the pulse sequence being provided with a plurality of dummy pulses between the pre-pulse for fat suppression and the head of the pulse train for data acquisition, a data acquisition unit configured to apply an RF pulse and a gradient magnetic field pulse based on the pulse sequence set by the setting unit to a test object so as to acquire the echo data, and an image generation unit configured to reconstruct an image of the test object from the acquired echo data, wherein an application time during which the plural dummy pulses are applied or flip angles of the plural dummy pulses can be adjusted.

Magnetic resonance imaging apparatus

A magnetic resonance imaging (MRI) apparatus includes an MRI imaging condition setting unit configured to set an imaging condition frequency-selectively applying a first suppression pulse for suppressing fat and further frequency-selectively applying a second suppression pulse to the fat after applying the first suppression pulse, a slip angle of the second suppression pulse differing from that of the first suppression angle, and the second suppression pulse further suppressing remaining fat after applying the first suppression pulse. The image data acquisition unit acquires image data according to the imaging condition.

Magnetic resonance imaging (MRI) using SPIR and/or chess suppression pulses

A magnetic resonance imaging apparatus of an embodiment includes: an imaging condition setting section configured to set an imaging condition for a main scan, a preparatory scan performing section configured to repeat a preparatory scan to be performed by the use of the imaging condition for a main scan and a changeably inputted center frequency so as to generate a preparatory image in real time, a display section on which the preparatory image can be displayed in real time, an optimum center frequency setting section configured to change the center frequency so as to change a situation in which a banding artifact appears and configured to set an optimum center frequency according to a user operation based on an observation of the preparatory image, and a main scan performing section configured to reconstruct an image for a diagnosis by using the optimum center frequency having been set.

A magnetic resonance imaging apparatus includes a trigger generating unit, a blood flow image generating unit and a control unit. The trigger generating unit acquires blood flow information of an object and generates a trigger based on the blood flow information. The blood flow image generating unit acquires imaging data with using the trigger and generates blood flow image data. The control unit controls so as to repeatedly perform a probe sequence for acquiring the blood flow information and an imaging sequence for acquiring the imaging data alternately.

Magnetic resonance imaging apparatus and magnetic resonance imaging method

A magnetic resonance imaging apparatus according to an embodiment is a magnetic resonance imaging apparatus that performs a contrast medium imaging, comprising a time management part that measures and manages a lapse time after injection of a contrast medium, a setting part that sets a start time of a second-half imaging in the form of a lapse time after injection of contrast medium, the second-half imaging being performed a predetermined idle time after a first-half imaging and the first-half imaging being performed after injection of the contrast medium, and a display part that displays at least the lapse time measured by the time management part and the start time set by the setting part.

A magnetic resonance imaging apparatus includes a magnetic resonance data acquisition unit and a cerebrospinal fluid image data generation unit. The magnetic resonance data acquisition unit consecutively acquires a plurality of magnetic resonance data for generating a plurality of cerebrospinal fluid image data, each corresponding to a different data acquisition time, after a labeling pulse is applied. The cerebrospinal fluid image data generation unit generates the plurality of cerebrospinal fluid image data based on the plurality of magnetic resonance data.

A magnetic resonance imaging apparatus includes an acoustic control unit and an image data acquisition unit. The acoustic control unit applies a gradient magnetic field for controlling a sound in synchronization with a signal representing a respiratory body motion. The image data acquisition unit acquires imaging data by subsequently imaging to control the sound and generate image data based on the imaging data.

A magnetic resonance imaging apparatus includes an acoustic control unit and an image data acquisition unit. The acoustic control unit applies a gradient magnetic field for controlling a sound in synchronization with a signal representing a respiratory body motion. The image data acquisition unit acquires imaging data by imaging subsequently to control the sound and generate image data based on the imaging data.

A magnetic resonance imaging (MRI) apparatus acquires magnetic resonance (MR) data associated with a plurality of different delay times according to a pulse sequence in which a region-selective saturation pulse is first applied, a region-non-selective inversion recovery pulse is then applied, and then the magnetic resonance data is acquired, the delay time being defined as a period from the saturation pulse application time to the start of MR data acquisition. A plurality of blood flow image data respectively associated with the plurality of different delay times are created using the acquired MR data.

Non-contrast MRA using region-selective saturation pulse followed by non-region selective inversion recovery pulse to larger overlapped area

A magnetic resonance imaging apparatus includes an imaging condition setting unit and an image data acquisition unit. The imaging condition setting unit sets an imaging condition applying first and second suppression pulses of which at least ones of types, center frequencies and frequency bands are different from each other. The first and the second suppression pulses frequency-selectively suppress at least one of fat and silicone. The image data acquisition unit acquires image data according to the imaging condition.

Magnetic resonance imaging (MRI) using SPIR and/or CHESS suppression pulses

An MRI system includes static and gradient field generators for respectively generating static and gradient fields to be applied to an object, a radio-frequency (RF) field transmitter/receiver for transmitting and receiving an RF field, a sequence controller for applying the gradient field and the RF field to the object at a predetermined timing while the object is being applied with the static field, thereby causing a predetermined MR phenomenon, a signal processor for performing predetermined processing of MR signal data detected through the RF field transmitter/receiver to obtain an MR image, and a display for displaying the image obtained by the signal processor. The sequence controller comprises a multi-slice controller for executing a multi-slice method using a sequence with a relatively long echo time so that an MR signal of a proton of a fat is suppressed and an MR signal of a proton of a CSF is emphasized. The signal processor comprises a summation processor for synthesizing multi-slice images as a plurality of slice images by summation to obtain a synthesized image.

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Nasushiobara, Japan

Shinichi Kitane