摘要:
For the purpose of enabling proper imaging of the prostate, a first saddle coil 210 having two loop portions of a geometry suited for sandwiching the lower abdomen of a human body from the anterior and posterior sides with the two loop portions facing each other, and a second saddle coil 310 having two loop portions of a geometry suited for allowing the lower limbs of the human body to be inserted into the two loop portions, and sandwiching the lower abdomen from the right and left sides with the two loop portions facing each other, are quadrature-arranged so that the phases of magnetic resonance received signals are different by 90null, thus achieving imaging of the lower abdomen of the human body with a high S/N.
摘要:
An object of the present invention is to acquire transmitted X-ray data by irradiating X-rays of appropriate doses determined for the portions of a section containing the major axis and the portions thereof containing the minor axis respectively. An X-ray irradiating/detecting device consists mainly of an X-ray irradiator that includes an X-ray tube and irradiates a fan-shaped X-ray beam, and an X-ray detector that has a plurality of X-ray detecting elements arrayed in a direction in which the fan-shaped X-ray beam spreads and that is opposed to the X-ray irradiator with an object of imaging between them. The X-ray irradiating/detecting device is rotated about the object in order to acquire transmission X-ray data stemming from a plurality of views. At this time, the dose of the X-ray beam is differentiated between predetermined angular ranges of a section of the object shaped like an oval, which extend with the minor axis of the oval section as a centerline, and the other angular ranges.
摘要:
For the purpose of providing a backprojection method and an X-ray CT apparatus by which backprojection processing can be simplified and sped up, instead of obtaining backprojection pixel data D2(x, y) directly from projection data D0(view, ch), axially projected data D1(view, pt) are obtained from projection data D0(view, ch) by projecting them onto a straight line, and then backprojection pixel data D2 are obtained from the axially projected data D1.
摘要:
For the purpose of providing an ultrasonic diagnostic apparatus for improving ease of operation by effectively utilizing two display devices, at least two display modes are defined. In the first display mode, arithmetic control/signal processing means 11 controls video signal processing means 18 to display an ultrasonic diagnostic image based on ultrasonic reflection signals stored in an image memory 16 on a CRT device 30 as a monitor display device, and controls video signal processing means 17 to display operation-indicating items for the operation relating to ultrasonic diagnosis on an LCD device 40, and conducts task processing for ultrasonic diagnosis in response to an operation detected by position detecting means in a touch panel 42. In the second display mode, the arithmetic control/signal processing means 11 controls the video signal processing means 18 to display operation-indicating items for the operation relating to ultrasonic diagnosis on the CRT device 30, and controls the video signal processing means 17 to display an ultrasonic diagnostic image based on ultrasonic reflection signals stored in the image memory 16 on the LCD device 40, and conducts processing in response to a position detection signal detected by the position detecting means in the touch panel 42, for example, conducts zoom processing.
摘要:
In order to reduce ghosts due to increasing echo intensity fall-off in the course of an echo train in MR imaging employing the FSE method, the present method assigns individual echoes in the echo train to respective segments to acquire data F(S1-S3), then assigns individual echoes arranged in the reverse order to the respective segments so that the order of signal intensity magnitude in the data F is inverted, to acquire data R(S4-S5), adds the data F and R for each view, and produces an image from the sum data. The number of echoes in the echo train is preferably selected to be an even number.
摘要:
In an X-ray CT imaging apparatus which is designed to produce a CT image in a short time, a master processor (MP) converts fan-view image data produced by multiple X-ray sensors into para-view image data, and thereafter distributes the resulting data to slave processors (SP1 through SP4), which are also supplied with modification data (B1 through B4). The slave processors (SP1 through SP4) implement the first pre-processing, second pre-processing, FBP process and post processing continuously, thereby producing BP data (I1 through I4). The master processor (MP) collects and composes the BP data (I1 through I4) to produce a CT image.
摘要:
In order to decrease the amount of operation required for an operator to move a cursor and in order to allow the operator to distinctly view deviation of CRL (Crown Rump Length) of a fetus from a normal value, when an ultrasonic image of a fetus F is displayed and a first cursor C1 is positioned at the head (or the rump) of the fetus F, a second cursor C2 is initially displayed at a position which corresponds to a normal CRL obtained from GA (Gestation Age) estimated from the last menstruation date. When the second cursor C2 is moved and positioned at the rump (or the head) of the fetus F, the measured CRL and GA estimated therefrom are displayed.
摘要:
In order to improve the operational efficiency and mitigate the burden for a subject, there is provided a table comprising a table body 41 which can be moved upwardly and downwardly, and a cradle 42 disposed over the table body 41 and having a cradle body portion 42c on which the subject 30 is to be mounted and an extending portion (first extending portion) 42a projecting laterally from at least one lateral portion of the cradle body portion 42c and extending to the vicinity of a mat 32 on a carrying means (stretcher) 25 alongside, the extending portion 42a being for use in shifting the subject 30 on the carrying means 25 to the cradle body portion 42c.
摘要:
For the purpose of supporting the subject's head corresponding to the motion of the subject's neck, there is provided a neck fixing apparatus comprising a base disposed on a surface on which the subject is mounted, an arm extending along the body axis of the subject to be mounted and pivotally attached to the base, and a head rest 82 for mounting the subject's head, movably attached to the arm and movable along the arm 60.