X-RAY CT APPARATUS AND MEDICAL DATA COMMUNICATION LINK SYSTEM

Abstract

A receiving medium comprising N components is assigned to a channel comprising N components respectively and provided along the circumference around which a rotating frame rotates. At a position facing said receiving medium corresponding to the rotation, the transmission medium of M components (M>2N, N represents an integer more than 2) are arranged separately in a line along the circumference of the rotating frame in a state such as charge-coupling. A signal generation device produces the signal containing data relating to an object obtained by detection of the X-ray detector device, which is for example, a carrier signal modulated with the data. In addition, for example, when the transmission medium is rotated according to the carrier signal to face any of the receiving medium, a switching device transmits the signal from the channel to one of the corresponding receiving medium, and when the interval between the two adjacent transmission medium passes through said receiving medium, the switching device switches the signal from said generation device according to said rotation, such that the signal from the same channel may be transmitted to the two adjacent transmission medium.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A shows a communication link system of prior art.

FIG. 1B illustrates a structure of an X-ray detector.

FIG. 2 shows a communication link system of prior art.

FIG. 3 illustrates a background art relating to this embodiment.

FIG. 4 shows an example of the first embodiment of a medical data communication link system showing an example where the rotating gradient of a rotating frame is 0 degrees.

FIG. 5 shows an example of the rotating frame rotated 45 degree in relation to the case shown in FIG. 4.

FIG. 6 shows an example of the rotating frame rotated 90 degrees in relation to the case shown in FIG. 4.

FIG. 7 shows an example of the rotating frame rotated 180 degrees in relation to the case shown in FIG. 4.

FIG. 8 shows an example of the rotating frame rotated 270 degrees in relation to the case shown in the figure.

FIG. 9A shows an example of channel output by a transmission medium corresponding to the rotation in the first embodiment.

FIG. 9B shows an example of channel output by a transmission medium corresponding to the rotation in a modification of the first embodiment.

FIG. 10 shows a functional block of the second embodiment of the medical data communication link system.

FIG. 11 shows an example of channel output by a transmission medium corresponding to the rotation in the second embodiment.

FIG. 12 shows a functional block of the third embodiment of the medical data communication link system.

FIG. 13 shows a functional block of the fourth embodiment of the medical data communication link system.

FIG. 14 shows an example of a functional block of an X-ray CT apparatus.

FIG. 15 shows a modified example of the data communication link system to be provided to X-ray CT apparatus.

Claims

1. An X-ray CT apparatus having a data communication link system that intermediumtes data communication between a rotating frame and a stationary frame, wherein said data communication link system comprises:a signal generation device located in said rotating frame, which divides the data into a plurality of channels for output;a plurality of receiving medium corresponding to a plurality of channels, which are provided in said stationary frame in order to locate around said rotating frame;a plurality of transmission medium provided separately along the circumference of said rotating frame; anda switching device assigning to each transmission medium the data from said plurality of channels output from said signal generation device, and switching the data to be transmitted to the two transmission medium into data of the same channel when the interval between the two adjacent transmission medium passes nearby said receiving medium.

2. An X-ray CT apparatus according to claim 1, wherein said rotating frame comprises an X-ray tube that radiates X-rays and an X-ray detector that detects X-rays transmitted onto an object;said stationary frame comprises a data processing circuit to process the data output by said X-ray detector; and,said data communication link system divides the data output by said X-ray detector into a plurality of channels for transmission to said data processing circuit.

3. An X-ray CT apparatus according to claim 1, wherein said switching device switches the data to be transmitted to said transmission medium in accordance with the rotating gradient of said rotating frame.

4. An X-ray CT apparatus according to claim 1, wherein said transmission medium and said receiving medium intermediumte data communication by charge-coupling or electromagnetic-coupling.

5. An X-ray CT apparatus according to claim 1, wherein said receiving medium of N components are provided so as to correspond with the N channels, and said transmission medium are provided for over 2N components.

6. An X-ray CT apparatus according to claim 1, wherein the transmission lines are provided between said signal generation device and said each transmission medium and have the same line length for effective transmission; and,said receiving medium passing through the interval between the two adjacent transmission medium receives data of the substantially same phase.

7. An X-ray CT apparatus according to claim 1, wherein any of the ends facing said adjacent two transmission medium is arranged to be located upstream or downstream of the data flow to be transmitted.

8. An X-ray CT apparatus according to claim 1, wherein said data communication link system is provided with a plurality of combinations of said plurality of receiving medium and said plurality of transmission medium in parallel in the axial direction of said rotating frame.

9. An X-ray CT apparatus equipped with a data communication link system that intermediumtes data communication between a rotating frame and a stationary frame comprising: an X-ray tube provided at said rotating frame to radiate X-rays;an X-ray detector provided at said rotating frame to detect the X-rays transmitted onto an object; a signal generation device provided at said rotating frame to divide the data output by said X-ray detector into N channels for output;a transmission medium of 2N components provided separately in a line along the circumference of said rotating frame, any of which have the same line shape and length of one transmission line;a switching device provided to said rotating frame to assign said N channels to each transmission medium upon receipt of each data divided into N channels from said signal generation device; anda receiving medium of N components provided to said stationary frame located along the circumference of said rotating frame that receives data by charge-coupling or electromagnetic coupling, whereinsaid switching device transmits data to each transmission medium via the switching of the 2 channels per rotation of 360/2N degrees of said rotating frame, then transmits the data from the different channels for each 2 transmission medium, and when the interval between the two adjacent transmission medium pass near said receiving medium, switches the data to be transmitted to the two transmission medium to the same channel.

10. A data communication link system for a medical diagnosis apparatus that intermediumtes data communication between a rotating frame and a stationary frame comprising: a plurality of receiving medium provided to said stationary frame to locate around said rotating frame and corresponding to a plurality of channels;a plurality of transmission medium provided separately along the circumference of said rotating frame; anda switching device that assigns the plurality of channels to each transmission medium, and switches the data to be transmitted to the two transmission medium to the same channel when the interval between two adjacent transmission medium passes near said receiving medium.