Canon Kabushiki Kaisha

Mari Co., Ltd.

Hirofumi Taki

Kenichi Nagae

Toru Sato

Takuya Sakamoto

Keishi Saito

Yasuyoshi Takai

Yasuhiro Someda

Katsuya Oikawa

Rodrigo Bornhausen-Demarch

Yizhe Wu

Rie Tomizawa

Takahiro Manjo

Masaharu Akao

Junichi Morimoto

Shigeaki Okumura

Yoshiaki Motoyama

A sleep apnea treatment apparatus including a stimulation device that applies a stimulation to a subject, and a controller including circuitry which receives sounds produced by the subject, converts the sounds to received sound signals, obtains snoring sound information from the received sound signals, calculates an impact of snoring sound produced by the subject based on the snoring sound information, and causes the stimulation device to apply the stimulation to the subject when the impact is higher than a threshold.

Sleep apnea treatment apparatus and method

An anti-snoring apparatus including a low frequency sound generating device that applies a low frequency sound to a subject producing a snoring sound, and a controller including circuitry that converts the snoring sound to a received signal, obtain snoring sound information from the received signal, process the snoring sound information such that an impact of the snoring sound is determined based on the snoring sound information, and cause the low frequency sound generating device to apply the low frequency sound to the subject when the impact is higher than a threshold.

Anti-snoring apparatus, anti-snoring method, and program

A subject information acquisition apparatus includes a converter configured to receive reflected waves from a contrast medium within a target area inside a subject, and a pressure information acquisition unit configured to acquire pressure information within the target area. In this case, the converter receives reflected waves from a contrast medium in each of a first period and a second period in which a pressure within the target area is different from the first period. The pressure information acquisition unit acquires pressure information in the second period within the target area based on a receive signal based on reflected waves in the first period, a receive signal based on a reflected wave in the second period, and pressure information on a region different from the target area, the pressure information being acquired in the first period.

Subject information acquisition apparatus, subject information acquisition method, and program

Provided is an object information acquiring apparatus including elements with which an acoustic wave is transmitted to and received from an object and converted into a plurality of received signals, a processor that acquires a power intensity signal of the inside of the object, and a corrector that corrects the power intensity signal, the processor being configured to calculate correlation values of frequency components, perform frequency average processing on a correlation matrix that is a set of the plurality of calculated correlation values to acquire a first power intensity signal, and reduce variance of elements in the diagonal direction of the correlation matrix to acquire a second power intensity signal, and the corrector being configured to output a power intensity signal subjected to correction processing.

Object information acquiring apparatus and control method for same

A subject information obtaining apparatus includes: a plurality of conversion elements configured to receive an elastic wave and convert the elastic wave into a plurality of received signals, a storage unit configured to store a plurality of reference signals corresponding to shapes of the object inside a subject, and an FDI adaptive processing unit configured to execute the FDI method and the adaptive signal processing using the plurality of received signals and two or more reference signals among the plurality of reference signals, in order to obtain two or more power intensity distributions for the two or more reference signals.

Subject information obtaining apparatus, method for obtaining subject information, and program

A subject information acquisition apparatus of the present invention includes a transmission/reception unit including a plurality conversion elements which transmit an elastic wave to the subject and receive a reflected wave that is reflected at each position in the subject, a scan line signal acquisition unit which acquires a plurality of signals corresponding to the reflected waves from each position in the subject as scan line signals by using a plurality of reception signals outputted from the conversion elements, and a processing unit which acquires moving information of the object by using the plurality of scan line signals. The processing unit acquires the moving information of the object on the basis of a distribution of cross-correlation values on a plane represented by two axes including an axis of time difference and an axis of distance difference by using a plurality of cross-correlation values between scan line signals at different positions.

An object information acquisition apparatus according to an embodiment of the present invention includes a plurality of transducer elements each configured to transmit an acoustic wave to an object, to receive reflected waves reflected from inside the object, and to convert the reflected waves into a time-series reception signal; and a processor configured to perform frequency domain interferometry combined with adaptive signal processing by using the reception signals output from the plurality of transducer elements and a reference signal so as to obtain acoustic characteristics at a plurality of positions located inside the object. The processor is configured to switch the reference signal to another reference signal at least once in accordance with a target position located inside the object while performing the frequency domain interferometry so as to obtain the acoustic characteristics at the plurality of positions located inside the object.

Object information acquisition apparatus object information acquisition method and non-transitory computer-readable medium

Object information acquisition apparatus, object information acquisition method, and non-transitory computer-readable medium

An ultrasound image forming method comprises a first step of receiving a first signal reflected from the object, a second step of obtaining an aberration correction value based on the first signal thus received, a third step of receiving a second signal reflected from the object when a second ultrasound corrected based on the aberration correction value is transmitted to the object, and a fourth step of forming an image from the aberration correction value and the second signal. The center frequency of the second ultrasound is between 0.5 MHz and 20 MHz, the center frequency of the first ultrasound is between 3/16 and 9/20 of the center frequency of the second ultrasound. By this method, an accurate aberration correction value can be obtained and an ultrasound imaging with high resolution can be achieved even if aberrations are large and difficult to correct.

Image forming method using ultrasound and aberration correction method

Adopted is an object information acquiring apparatus that includes: a probe including multiple conversion elements that transmit acoustic waves to an object, and convert the reflected waves into time-series received signals; and a processor that performs frequency domain interferometry, through application of adaptive signal processing, by using the multiple received signals output from the multiple conversion elements and a reference signal, and obtains acoustic properties of multiple positions. The probe is configured such that, when a direction in which the multiple conversion elements are arranged is a first direction and a second direction, end portions in the second direction have a lower transmission sound pressure of the acoustic waves than a midportion in the second direction.

Object information acquiring apparatus and control method thereof

A subject information obtaining apparatus includes a plurality of conversion elements configured to receive an elastic wave that has propagated from a subject and convert the elastic wave into a plurality of electrical signals, a frequency-domain interferometry adaptive processing unit configured to execute a frequency-domain interferometry method and adaptive signal processing using the plurality of electrical signals and obtain power intensity distribution by calculating power intensity at each position on a plurality of scan lines, and a correction unit configured to execute a correction process by which variation in power intensity between adjacent scan lines in a direction that intersects with the scan lines is reduced.

Subject information obtaining apparatus, method for obtaining subject information, and computer-readable storage medium

Provided is a signal processing apparatus including: a transducer that performs scanning through the interior of an object and acquires received waveform data of a plurality of scanlines; an intensity screening unit that outputs a high intensity position at which signal intensity calculated from the received waveform data is higher than a first predetermined value; a correlation calculation unit that calculates a correlation value in a constant-width division for received waveform data of a first scanline and of a second scanline having a predetermined correlation with the first scanline; a position extraction unit that extracts, as a candidate position of a singular region, a position which corresponds to a high intensity position and for which the correlation value is lower than a second predetermined value; and an image processor that performs signal processing of generating image data of the object on the basis of the received waveform data.

Signal processing apparatus

A subject information obtaining apparatus according includes: plurality of conversion elements configured to convert an elastic wave from a subject into a plurality of reception signals, a delay and sum unit configured to perform a delay and sum process by using the plurality of reception signals and output a plurality of scanning line signals, a scanning line synthesis unit configured to add the plurality of scanning line signals between adjacent scanning lines and output a plurality of synthesis scanning line signals, and an FDI adaptive processing unit configured to perform a frequency domain interferometry and an adaptive signal processing by using the plurality of synthesis scanning line signals and obtain a power intensity distribution.

Subject information obtaining apparatus, subject information obtaining method, and program

A signal processing apparatus scans a beam of elastic waves into an object to be examined, acquires received waveform data of a plurality of scan lines, and performs signal processing to form a tomographic image of said object to be examined from the received waveform data of the plurality of scan lines. The signal processing apparatus includes a scan line correlation calculation part () that calculates a correlation value of received waveform data between a first scan line and a second scan line that has a prescribed correlation with the first scan line, for a plurality of positions on the scan lines, and a correlation change position extraction part () that extracts, from among the plurality of positions on said scan lines, a position at which the correlation value becomes a value different from a prescribed value as a position at which a unique region can exist.

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Kyoto, Japan

Hirofumi Taki