 HDTV receiver |
| FIG. 1 presents a high definition television (HDTV) format disclosed in the aforementioned related ... |
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| Optical fiber seal verifying system |
| OF THE INVENTION An embodiment of the present invention will be described below with reference to ... |
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| Phased digital filtering in multichannel environment |
| A specimen, such as automobile, being subjected to simulated road conditions, is mounted at its ... |
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| Audio mixing console |
| The audio mixing console achieving the above described object of the invention comprises, operators ... |
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| Electro-mechanical transduction apparatus |
| To accomplish the foregoing and other objects, features and advantages of the invention there is ... |
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| Flextensional metal-ceramic composite transducer |
| OF THE INVENTION Referring to FIG. 1, a first embodiment of the transducer of the invention ... |
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| Electroacoustic transducers comprising vibrating panels |
| OF THE INVENTION Referring to FIGS. 1 and 2, the first embodiment of electro-acoustic transducer ... |
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| Video data transmitting system |
| It is an object of the present invention to solve the problems mentioned above. Another object of ... |
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Apparatus and method for examining a body, particularly useful in tomography
| Details |
Inventors: Blumenthal, Rafael;
Assignee: Elscint Incorporated (Boston, MA)
Primary Examiner: Smith; Alfred E.
Assistant Examiner: Grigsby; T. N.
Attorney, Agent or Firm: Sandler & Greenblum
Apparatus for examining a body, particularly useful in tomography, for producing transverse sectional images of the body, comprises scanning means supported by a carriage coupled to its mounting via a pair of links defining, with the carriage and its mounting, a four-link, parallel-motion mechanism which, upon oscillation of the links, effects a curvilinear movement of the carriage with respect to the body, and thereby a curvilinear traverse of the body by the scanning means. The carriage is also rotatably mounted on the machine frame enabling the carriage, and the scanning means supported thereon, also to be rotated about the body either incrementally or continuously. |
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DETAILED DESCRIPTION An object of the present invention is to provide apparatus and method for examining a body having advantages in the above respects.
Another object of the invention is to provide the above advantages in apparatus and method particularly useful in CAT equipment to reconstruct an image by translating and rotating a source of penetrating radiation with respect to the examined body.
According to a broad aspect, the invention provides a method and apparatus of scanning or examining a body, and particularly for producing transverse sectional images of the body, by scanning means driven by a four-link, parallel-motion mechanism to effect a curvilinear, rather than a rectilinear, traverse of the body by the scanning means.
According to a more specific aspect of the invention, there is provided apparatus for examining a body including scanning means for scanning the body along a plurality of lines (e.
g.
, by a fan-shaped beam) through the body, a carriage for supporting the scanning means, and drive means for driving the carriage with respect to the body to effect the scanning thereof by the scanning means, characterized in that the drive means includes a pair of links and means for oscillating the links; and in that said links are pivotably mounted at one of their ends to spaced points of a common mounting member, and are pivotably coupled at their opposite ends to spaced points of the carriage, with the distance between the pivot points of one link being equal to that of the other, and the distance between the pivot points on the mounting member being equal to that between the pivot points on the carriage.
Thus, the arrangement is such that the links define, with the mounting member and the carriage, a four-link, parallel-motion mechanism which, upon oscillation of the links, effects a curvilinear movement of the carriage with respect to the mounting member, and thereby a curvilinear traverse of the body by the scanning means, without altering the angles of the scanning lines through the body during the curvilinear traverse of the scanning means
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Audio Signal Processing 
