摘要:
In measuring a number of echo signal, which normally attenuate chronologically, in a single pulse sequence, such as in multi-echo method or a multi-slice method, each echo signal is received and suitably amplified by a reception amplifier having predetermined levels of gain for different time periods during which the successive echo signals are processed such that the echo signals received at a data collection unit are all of substantially the same amplitude regardless of where they appear in the time sequence. The predetermined levels of gains are obtained by false scanning prior to actual image scanning and calculation and storing in a memory. As a result, the echo signals can be received within a dynamic range which is smaller than using the conventional system.
摘要:
An NMR imaging apparatus of the present invention which is provided with an improved data acquiring means 16 and which is useful for enhancement of the speed of reconstruction of an image in NMR imaging by a multislice multiecho method is characterized in that a raw data memory 18 which is provided for storing raw data for the maximum number of slices that can be acquired in one scanning separately from the memory 10 of a computer system 6, and an address converter 19 for converting the addressses of the measured data supplied subsequently in accordance with the sequence of the multislice multiecho method and for storing the measured data in the raw data memory 18 in the arrangement different from the order of acquisition are disposed in a data acquiring device, so that a data block for each slice is formed in the raw data memory 18.
摘要:
The image diagnosis apparatus of the present invention is equipped with means for automatically determining a window level and a window width for image displaying in accordance with the value of reconstructed image data. With this window level/window width calculating means (13), the window level is obtained with respect to each reconstructed image on the basis of the virtual average value of its pixel data and the window width is also obtained which has a certain relationship with that window level. When displaying each reconstructed image, a display is made in accordance with each window level and each window width thus obtained. Instead of the obtained window level and window width, those set by a manual setting section (23) may be used by a changeover operation when necessary.
摘要:
There is provided a method of connecting electric wires in which connecting strength is improved, and at the same time, dispersion of the connecting strength can be depressed. The method of connecting electric wires includes a step for removing coatings of a plurality of electric wires 51 thereby to expose conductors 52, a step for holding at least two places of a plurality of the electric wires 51, a step for twisting the conductors together while keeping a distance between the two holding places constant, and a step for welding the conductors by ultrasonic welding.
摘要:
A plurality of windows are displayed on a display screen, and a file within one of the plurality of windows is specified by an input section. The one window having the specified file is displayed on the display screen in such a way that the size of the one window is reduced. When a window of a transfer destination is specified by the input section, the window of a transfer source is displayed as a window having the original size.
摘要:
A slipping torque changing mechanism for an impact tool includes a driving source for generating a rotational motion. A motion converting mechanism is connected with this driving source for converting the rotational motion of the driving source into a reciprocating motion. An impact mechanism is connected with this motion converting mechanism for transmitting the reciprocating motion to a tool end. A rotational motion transmitting mechanism is disposed separately from the motion converting mechanism for transmitting the rotational motion of the driving source to the tool end. A plurality of clutches, having different slipping torques, are disposed at different portions on the rotational motion transmitting mechanism.
摘要:
Disclosed is a polyester vessel having mouth, side wall and bottom portions formed of a polyester composed mainly of ethylene terephthalate units, wherein the thermoplastic polyester is a polyester containing a catalyst residue in an amount smaller than 1000 ppm as the metal, and in the thermoplastic polyester constituting the bottom portion of the vessel, the ratio of the thermal crystallization degree represented by the following formula:100.times.(Q.sub.DC -Q.sub.AC)/Q.sub.DC (1)wherein Q.sub.AC stands for the heat quantity of crystallization at elevation of the temperature and Q.sub.DC stands for the heat quantity of crystallization at lowering of the temperature, is lower than 90%.
摘要:
The present invention provides a joining method of metal plates, which can connect two metal plates without a projection in a surface of the metal plates and a gap, and a joined unit having metal plates which are connected without a projection in a surface of the metal plates and a gap between the metal plates. The joined unit has a pair of metal plates. One of the metal plates has a hole, and another metal plate has a projection having a height less than a thickness of the one of the metal plates. The projection passes through the hole, the one of the metal plates is placed on the other of the metal plates each other, and a central part of an end surface of the projection is crushed in the hole. Thereby, the metal plates are joined to each other, and the joined unit can be provided.
摘要:
A workpiece stage of a resist curing device is devised in which a workpiece on which a resist has been applied is held on a workpiece stage by vacuum suction, in which the workpiece is irradiated with UV radiation with a simultaneous temperature increase, in which it is cooled after UV radiation and by which the resist is cured, the workpiece stage having heating and cooling arrangements, major warping of the carrier is avoided and reliable holding of the workpiece on the carrier surface by vacuum suction obtained by the carrier being made of an aluminum alloy or a copper alloy which meets the following condition: σ/σy3.1 σ labeling the thermal stress which is determined using the following formula: where E is Young's modulus (N/mm2) at 200° C., α is the coefficient of linear expansion (1/° C.) at 200° C. and ΔT is a temperature difference (° C.) of 120° C., and σy is the fracture point at 200° C.
摘要:
The cable-enrolling conductive thin-film sheet 1 consists of a conductive thin film 2 and an insulated cable 3. The conductive thin film 2 has a conductor layer 4 and first and second insulating layers 5, 6. The first insulating layer 5 is laminated on one face of the conductor layer 4, while the second insulating layer 6 is laminated on the other face of the conductor layer 4. The insulated cable 3 has an electrically conductive core wire 10 and an insulating sheath 11 covering the core wire 10. The insulated cable 3 laid on the first insulating layer 5 is partially welded to the sheet 2 by ultrasonic welding to obtain the cable-enrolling conductive thin-film sheet 1. The first insulating layer 5 is welded to be secured to the sheath 11, and the conductor layer 4 is mechanically connected to the core wire 10 by the ultrasonic welding.