National Yang Ming Chiao Tung University

Shih-Chun Jin

Jyh-Cheng Chen

Meng-Tse Wu

Chien-Heng Liu

The present invention provides an automatic positioning system of computed tomography equipment and a method for automatically positioning computed tomography equipment. By the system and the method of the present invention, a geometric locating correction is able to be made on the equipment before operating it. After the correction, the focal spot of the X-ray tube of the computed tomography equipment and the center of the X-ray detector are on the same straight line, so that a projection image close to the real image can be obtained to avoid offset or distortion in subsequent 3D mapping.

Automatic positioning system of computed tomography equipment and the using method thereof

The invention provides a contrast carrier device with geometric calibration phantom on computed tomography, comprising: a front ring body having a front outer peripheral surface; the front outer peripheral surface is provided with a front correction bead; a loading table, wherein one end of the loading table is connected with the front ring body; a rear ring body is oppositely arranged at the other end of the front ring body connected to the loading table, wherein the rear ring body has an outer peripheral surface, the rear peripheral surface is provided with a rear correction bead; a virtual axis passes through the center of the front ring body and the center of the rear ring body, respectively, and the front correction bead and the rear correction bead. The beads are arranged equidistantly along the virtual axis; and a support body is provided opposite to the other end of the rear ring body connected to the loading table, so that the contrast carrier device is fixed to a tomography scan, and the virtual axis coincide with a scan axis of the tomography device.

Contrast carrier device with geometric calibration phantom on computed tomography

The present invention discloses a computed tomography (CT) image reconstruction method using two-dimensional images at different angles as well as a two-dimensional virtual matrix on a basis of spherical space, to process projection, comparison, and correction. Thus, it can obtain the tomography within predetermined difference value to reduce computational and storage space. Matching the parameters of energy source and image capturing can further shorten energy radiation on an object's (i.e. a human body) exposure time, in order to reduce radiation effects of energy sources (i.e. as X-rays) of the object (i.e. as a human body).

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Taipei, Taiwan

Shih-Chun Jin