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In order to acquire high resolution ultrasound images while maintaining an appropriate frame rate in ultrasound diagnostic devices, the disclosed method generates high resolution ultrasound images by performing image reconstruction on the basis of multiple ultrasound frame images captured along a time series and the magnitudes of positional shifts, or forms high resolution ultrasound images by performing image reconstruction on the basis of multiple ultrasound frame images acquired by controlling the ultrasound probe and varying scan orientation or scan focal length frame by frame.


Patent
Hitachi Medical Corporation | Date: 2014-03-04

An X-ray detector and an X-ray CT apparatus that facilitate collimator plate arrangement are characterized by comprising radiation detection element arrays in which a plurality of radiation detection elements detecting a radiation generated from a radiation source are arranged in a first direction and a second direction orthogonal to the first direction, collimator plates that are arranged along the first direction on the radiation source side of the radiation detection element arrays to remove scattered radiations, and collimator plate support members that have grooves supporting the collimator plate and are arranged along the second direction between the radiation detection elements.


Patent
Hitachi Medical Corporation | Date: 2014-05-02

The present invention is capable of distinguishing four types or more of substances such as air, water (soft tissues), contrast medium, and bones (calcification) to diagnose progress of atherosclerotic sites using dual energy imaging. A subject is imaged with two types of different tube voltages and an image obtained by image reconstruction is binarized to carry out a reprojection process; thereby, the distance of penetration of air is estimated, the contribution of air in measurement projection data is determined, and the amount of reduction by the air is deducted from the projection data so as to enable distinction between four or more substances such as air, water (soft tissues), contrast medium, and bones (calcification).


When imaging is performed by executing a pulse sequence on an MRI apparatus, silencing is realized with securing sufficient application amount of crusher without extending the application time thereof. In the pulse sequence carried by the MRI apparatus, at least one gradient magnetic field pulse included in the pulse sequence has a waveform synthesized from two or more base waves shifting along the time axis direction (synthesized waveform), and the base waves have a smoothly changing waveform convex upward. The pulse of the synthesized waveform is generated from one or more trapezoidal or triangular base pulses by a waveform conversion part of a computer of the MRI apparatus or an external computer.


Patent
Hitachi Medical Corporation | Date: 2014-05-15

To provide an X-ray CT apparatus and a scanning method that can scan a corpse efficiently, a death mode is selected and input to the CPU of an image processing device by performing a mouse-click or touch operation on any of buttons on a death mode selection window. The CPU obtains scanning conditions from the storage unit according to the input death mode. In a charred body mode, scanning conditions are defined in advance to perform high-resolution scanning for the pelvis portion and standard scanning for the other entire body for sex estimation. The sex estimation process estimates the corpses sex based on the pelvis portion shape and outputs the results. In a drowned body mode, scanning conditions are defined in advance to perform high-resolution scanning for the lung field and standard scanning for the other entire body to measure a water amount in the lung.

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