Abstract: In order to stably obtain an even fat-suppressed image without reduction of an imaging efficiency and without being affected by unevenness of irradiation magnetic field of an RF pulse, when an imaging sequence having a first sequence part for suppressing a signal from a desired component of an examinee by applying a CHESS pulse and a second sequence part for measuring an echo signal from the examinee is repeated, the flip angle of the CHESS pulse is changed at plural times. In the case of multi-slice imaging, the flip angle of the CHESS pulse is changed in at lest two slice imaging.

Abstract: A golf club shaft having at least six full-length layers composed of prepregs. The full-length layers are divided into an inner-layer part including a half of the full-length layers and an outer-layer part including a remaining half of the full-length layers. At least one pair of the full-length layers is formed as a bias set layer in each of the inner-layer part and the outer-layer part by layering two bias layers with each other, with reinforcing fibers of the bias layers intersecting with each other at an orientation angle of ±?° which fall in a range from ±25° to ±65° with respect to an axis of the golf club shaft. A straight layer is formed as an outermost full-length layer of the outer-layer part with reinforcing fiber thereof orienting at the range from 0° to ±10° with respect to the axis of the shaft.

Abstract: An MRI apparatus capable of selecting an optional direction as a phase encoding direction and achieving a preferable S/N, when an imaging time shortening technique is applied. A receiver coil, used as a receiver coil of a vertical magnetic field MRI apparatus, is a combination of a first coil (solenoid coil) forming a current loop around the outer circumference of a test object, second coils forming even-numbered current loops, and third coils forming odd-numbered current loops, in the direction intersecting the plane of the current loop of the first coil. The second coil and the third coil are arranged in such a manner that, as for the current loops in the array direction thereof, a position where a sensitivity of one coil is minimized approximately coincides with a position where the sensitivity of the other coil is maximized, whereby electromagnetic coupling is suppressed.

Abstract: A magnetic resonance imaging device includes magnetic field generating means and control means for controlling receiving means according to a predetermined pulse sequence, the predetermined pulse sequence including an unnecessary material suppressing sequence unit for canceling a signal from an unnecessary material which is not a measurement target and a main imaging sequence unit for measuring a nuclear magnetic resonance signal used to create an image of an examinee. The unnecessary material suppressing sequence unit generates at least two or more high frequency magnetic field pulses so that the longitudinal magnetization of the unnecessary material is made spatially uniform in the imaging space under application of a first high frequency magnetic field pulse in the main imaging sequence unit.

Abstract: A golf club 2 is provided with a head 4, a shaft 6, and a ferrule 8. The head 4 has a hosel hole 22. The hosel hole 22 has a large-diameter part 24 and a small-diameter part 26. The ferrule 8 has a base part 30 interposed between the large-diameter part 24 and the shaft 6. The large-diameter part 24 is disposed coaxially with the small-diameter part 26. The shaft 6 has a tip end surface 40 disposed in the small-diameter part 26. The large-diameter part 24 has an axial directional length longer than that of the small-diameter part 26. Preferably, the base part 30 has an end surface 52 separated from the bottom surface 54 of the large-diameter part 24. Preferably, an adhesive v1 is disposed in an enclosed part 62 defined by the end surface 52 of the base part 30, the bottom surface 54 of the large-diameter part 24, the outer peripheral surface 58 of the shaft 6, and the inner peripheral surface 60 of the large-diameter part 24. The shaft 6 and the large-diameter part 24 are bonded by the adhesive v1.

Abstract: An aldehyde derivative represented by the general formula (2) is reacted with ketene in the presence of a Lewis acid catalyst to produce a novel 2-oxetanone derivative (1), which is then purified to a 2-oxetanone derivative having a high trans-isomer purity, and then converted to a vinyl derivative (3) through decarboxylation reaction.

Abstract: The present invention provides a magnetic resonance imaging system capable of performing spectrum measurement even when a magnetic resonant frequency changes during MRS measurement. A time-varying rate of a water magnetic resonant frequency is measured in advance before the MRS measurement. The amount of change in water magnetic resonant frequency during the MRS measurement is predicted from the measured time-varying rate. With the predicted value as the reference, a transmission frequency of an RF magnetic field irradiated in a signal suppression pulse sequence, a transmission frequency of an RF magnetic field for excitation and inversion and a received frequency at the detection of a magnetic resonance signal in a sequence of the MRS measurement are respectively set. A high-precision spectrum measurement is hence enabled.

Abstract: In a superconducting magnet, including a vacuum vessel, a coil vessel inside the vacuum vessel, and a superconducting coil inside the coil vessel for generating a magnetic field, has a magnetic member, disposed inside the vacuum vessel, supported with thermal insulation, for compensating the magnetic field; a heat exchange device disposed outside the vacuum vessel for supplying to or absorbing heat from the vacuum vessel; and thermal conducting members thermally connecting the heat exchange device via the vacuum vessel to the magnetic member. An MRI including the superconducting magnet is also disclosed.

Abstract: The present invention provides a magnetic resonance imaging system capable of performing spectrum measurement even when a magnetic resonant frequency changes during MRS measurement. A time-varying rate of a water magnetic resonant frequency is measured in advance before the MRS measurement. The amount of change in water magnetic resonant frequency during the MRS measurement is predicted from the measured time-varying rate. With the predicted value as the reference, a transmission frequency of an RF magnetic field irradiated in a signal suppression pulse sequence, a transmission frequency of an RF magnetic field for excitation and inversion and a received frequency at the detection of a magnetic resonance signal in a sequence of the MRS measurement are respectively set. A high-precision spectrum measurement is hence enabled.

Abstract: An MRI apparatus excellent in magnetic field generation efficiency is provided. According to this invention, a main coil (52) of a gradient magnetic field coil (13) is partially recessed to reduce the total thickness of a radio-frequency coil (11) and a gradient magnetic field coil (13). That is, the main coil (52) is designed in a tubular shape, and the diameter r1 at the center portion of the imaging space is larger than the diameter r2 of the main coil end portion. Accordingly, the RF coil (11) can be disposed to be near to the gradient magnetic field coil (13) side without lowering the magnetic field generation efficiency.

Abstract: A golf club (2) includes a head (4), a shaft (6) and a grip (8). An elastic member (10) is attached to an external surface of the shaft (6). The elastic member (10) is ring-shaped and has no end. The elastic member (10) is externally fitted in the shaft (6) in a state in which an elastic contracting force is maintained. It is preferable that a fastening member for fastening the elastic member (10) from an outside should be provided. The fastening member is constituted to enable a mutual transition of a fastening state in which the elastic member is fastened and a removing state in which the fastening member is removed from the elastic member and is also removed from the golf club. It is preferable that the fastening member should be provided in no contact with the shaft (6) in the fastening state.

Abstract: A golf club shaft (10), tubular and having a hollow portion, which includes a laminate of fiber reinforced prepregs (21 through 23, 24A, 25 through 29). The laminate has a first part (I) composed of a plurality of first prepregs (P1) and a second part (P2). A loss factor (tan ?) of the first part (I) is set to not less than 0.005 nor more than 0.02, when the loss factor is measured at a frequency of 10 Hz under a condition of 10° C. A loss factor (tan ?) of the second part (P2) is set to not less than 0.10 nor more than 0.50, when the loss factor is measured at a frequency of 10 Hz under the condition of 10° C.

Abstract: An MRI apparatus suitable for realizing selective excitation utilizing multiple RF transmitting coils (parallel transmission) is provided. This MRI apparatus is provided with, as an RF receiving coil or RF transmitting coil, an RF transmitting coil 104 comprising a loop coil 210, primary differential coil 220 and secondary differential coil 230 having a common central axis 201. Upon imaging, the coils 210, 220 and 230 constituting the RF transmitting coil 104 are simultaneously driven by RF signals with the same phase, and only the differential coils 220 and 230 are driven in the second half of irradiation time with phases different by 180° from the phases for the first half.

Abstract: Even when the frame identifying pattern at the head is misjudged or cannot be obtained, the frame identifying pattern that follows on and the frame corresponding to that frame identifying pattern are acquired and are held, and the position of the frame is judged on the basis of the information of the frame identifying pattern at a timing when the acquired frame identifying pattern is switched, and the positions of all the frames which have been acquired until then are calculated uniquely. Therefore, even when the preamble identifying pattern cannot be correctly detected due to such as flaws, the positions of the frames in the blocks are correctly detected, and the data can be certainly demodulated.

Abstract: There is provided an oil or fat composition composed chiefly of triglycerides wherein the amount of medium-chain fatty acids in all the fatty acids composing the oil or fat composition is 5 to 23% by mass and the amount of triglycerides having two medium-chain fatty acid residues in the molecule in all the triglycerides is 1 to 20% by mass. The oil or fat composition is low in body fat accumulation, has equal cooking properties with conventional edible oils and has good flavor and high safety.

Abstract: A magnetic resonance imaging apparatus capable of suppressing noise caused by vibration of a gradient magnetic field coil and improving image quality is realized. A shim tray 22 is disposed between a static magnetic field generating magnet 4 and a gradient magnetic field generating coil 13. A large number of ferromagnetic shims are disposed in a large number of holes (screw holes) 24 formed in the shim tray 22. Vibration dampers 23 are disposed in holes formed in the shim tray 22 to reduce noise generated by vibration of the gradient magnetic field generating coil 13, which is propagated to the static magnetic field generating magnet through solid bodies and shakes the static magnetic field generating magnet, etc. It is hence possible to secure areas for arrangement of two means, i.e.

Abstract: A magnetic resonance imaging method comprising a step for applying one or more gradient magnetic field pulses continuously, a step for calculating a residual magnetic field being generated from a magnet by an gradient magnetic field pulse based on a residual magnetic field response function representing the relation between the strength of the gradient magnetic field pulse being applied and the strength of a residual magnetic field being generated, and a step for correcting the residual magnetic field thus calculated. The magnetic resonance imaging method is further provided with a step for updating the residual magnetic field response function with time depending on the application history of the gradient magnetic field pulses being applied continuously.

Abstract: Each point obtained by plotting flexural rigidity EI measured at ten sites on a shaft is defined as from T(1) to T(10) in this order from the head side, and the formula representing a line K that passes the T(1) and the T(10) is [Y=aX+b1]. The values at the Y-intercepts on the lines that are parallel to the line K and that pass the points of from T(2) to T(9), respectively, are defined as from b2 to b9, respectively, and the minimum value among the values at the Y-intercept b2 to b9 is defined as bmin. In this shaft, slope “a” of the line K is 0.04 or greater and 0.06 or less; any one of the b3, b4, b5, b6, b7 and b8 is smaller than b1; and the bmin is any one of b4 to b7. The value (b1?bmin) is 24 (N·m2) or greater and 35 (N·m2) or less, and the value (b9?b1) is 0 or greater and 10 (N·m2) or less. This shaft achieves excellent flight distance performance and directionality of the hit ball.

Abstract: In a magnetic resonance imaging apparatus, in order to suppress generation of artifacts when a linear or non-linear phase error is generated during sampling of the echo signals, a first sequence for acquiring a plurality of echo signals by radiating a radio-frequency magnetic field pulse to an object to be examined, performing phase encoding, while alternating the polarity of a readout gradient magnetic field, and a second sequence for acquiring a plurality of echo signals by repeatedly applying the readout gradient magnetic field while reversing its polarity to that in the first sequence at the same phase encoding direction are performed. Signal processing means performs complex addition of the echo signals having the same phase encoding amount respectively obtained in the first sequence and the second sequence, and reconstructs an image.

Abstract: A golf club grip includes: a grip body including a grip cylinder portion and a grip end portion disposed at one end of the grip cylinder portion and formed with a through-hole for communicating a grip interior with the outside; and a vibration absorption member formed from a viscoelastic material and formed separately from the grip body. The vibration absorption member is removably attached to the grip body. The vibration absorption member includes: a plane portion and a bar-like portion formed integrally with the plane portion. The bar-like portion extends through the through-hole of the grip end portion as projecting inwardly of the grip cylinder portion.