摘要:
In a nuclear magnetic resonance imaging apparatus including a first probe circuit for detecting magnetic flux in a first direction and a second probe circuit for detecting magnetic flux in a direction perpendicular to the first direction, the arm angle of conductor arms to form the first probe circuit and the arm angle of conductor arms to form the second probe circuit are different from each other.
摘要:
A high-frequency coil of the type of slot resonator in which outer conductors that have wing portions at both ends thereof and that are divided, are formed on the cylindrical surface, and ring-like inner conductors are formed on the inside of the wing portions. The wing portions have a width different from the width of the inner conductors. The self resonance frequency of the coil is adjusted by adjusting the width which is smaller than the other width. Further, the neighboring tips of the wing portions are opposed to each other via an air gap. The self resonance frequency is also adjusted depending upon the position of the dielectric plate inserted in the gap.
摘要:
A quadrature probe for nuclear magnetic resonance includes two sets of coils which are combined with an angle of 90.degree. therebetween. Four pieces of outer conductors and two pieces of ring-shaped inner conductors are capacitively coupled to each other through an insulator or an air gap. In the outer conductor(s) in at least one of a set of outer conductors disposed at positions symmetrical with respect to each other so as to form a first coil and a set of outer conductors disposed at positions symmetrical with respect to each other so as to form a second coil, a conductor member(s) for adjustment is attached in parallel to the arm portion(s) in that outer conductor(s) of that set. Alternatively, the arm portion(s) itself in that set is slidably attached to the wing portions in that set.
摘要:
An MRI RF coil including first and second ring elements having a plurality of peripheral segments connected in ring shape which are apart from each other along a common vertical axial line. The RF coil also includes a plurality of axial conductive segments for connecting the first and second ring elements electrically to each other at the contacts of the plurality of peripheral segments with a plurality of current loops being formed by neighboring axial conductive segments and two peripheral segments connected thereby. Further, at least one control signal feeding point is positioned at any one of the peripheral segments of the first or second ring elements.
摘要:
In a bird cage resonator, the axial length of rungs is changed between orthogonal elements. By doing this, the real view fields of orthogonal ports A and B in the sagittal direction are changed and the sensitivity difference between both view fields is reduced. For an object with an elliptical section to be inspected such as the human body, a remarkable difference in detection sensitivity between each orthogonal ports is eliminated and the receiving sensitivity of MRI apparatus employing the QD method is improved.
摘要:
This application describes a nuclear magnetic resonance inspection apparatus. In this apparatus, a nuclear magnetic resonance signal detected by a detection coil is wirelessly transmitted to a signal processing system. In another embodiment, the nuclear magnetic resonance signal is stored in a memory medium provided to the detection coil. This memory medium can be separated from the detection coil. The signal processing system reads out the nuclear magnetic resonance signal from the memory medium separated, and processes the signal.
摘要:
An electric-power-generation level predicting apparatus 1 includes a memory unit 20 that stores, as past data relating to a past electric power generation level of an electric power generator, past data containing information at multiple time points in each day, and an predicted-value calculating unit 13 that calculates, as time-series data containing an occurrence probability, an predicted value of the past data relating to an electric power generation level of the electric power generator based on a statistical correlation between different times in the past data or a statistical correlation between locations of the different electric power generators. The predicted-value calculating unit 13 includes a variance-covariance-matrix generator unit 131 that generates a variance-covariance matrix based on the past data, and a random-number generator unit 132 that generates a random number following the probability distribution based on the variance-covariance matrix.
摘要:
A seat belt retractor for retracting a seat belt includes a spool for retracting the seat belt, a locking mechanism for locking rotation of said spool, and an end-lock preventing mechanism for preventing an end-lock of the seat belt. The end-lock preventing mechanism includes a first speed-reduction portion for largely reducing a seat belt retracting speed of the spool when the spool retracts a substantially full length of the seat belt, and a second speed-reduction portion for reducing the seat belt retracting speed less than that of the first speed-reduction portion so as to provide a delay for the locking mechanism to be brought to a non-lock position at least when retraction of the seat belt is finished.
摘要:
An occupant restraint device having a high degree of freedom in attachment of an airbag is provided. A retainer 16 is applied to the inner surface of a lower portion of an airbag 12. A stub bolt 20 projecting downward from the lower surface of the retainer 16 is inserted in a bolt insertion hole 12a of the airbag 12, and a first nut 24 is screwed on the stud bolt 20 via a backing plate 22 from outside the airbag 12. Thereby, the airbag 12 is connected to the retainer 16. A gas generator 14 is connected to the retainer 16 by a bracket 30. The stud bolt 20 is disposed on the rear side from a center line of the airbag 12.
摘要:
A child seat installation structure is disclosed in which it is prevented that an expandable portion, when it expands, interferes with a child seat. In one form, an airbelt includes a lap bag and a normal belt portion, a tip of which is connected to the lap bag. A bracket for fixing a tip side of the normal belt portion is provided on a lap anchor. A loop portion is formed on the tip side of the normal belt portion using a clip, and the loop portion is inserted into a fixing hole provided in the bracket and is locked with a lock member. After that, a child seat is placed on a seat, and only the normal belt portion is routed over the child seat.