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Patent Searching and Data


Title:
COLLIMATOR OF RING-SHAPED ECT APPARATUS
Document Type and Number:
Japanese Patent JPS6227690
Kind Code:
A
Abstract:

PURPOSE: To facilitate manufacturing and to attain to enhance accuracy or safety to a subject, by separating an axial direction collimator part and a circumferential direction collimator part to bring both of them to be a separated constitutions.

CONSTITUTION: A large number of photomultiplier tubes 2 are arranged around a cylindrical scintillator 1 in a ring form and cylindrical axial direction collimator parts 3 are fixed in coaxial relation to said tubes 2. A circumferential direction collimator part 4 is cylindrical and arranged between the collimator parts 3 and the scintillator outside said collimator parts 3. The collimator part 4 is supported by a frame 5 while the frame 5 is connected to a drive shaft 6. Next, the collimator part 4 is collimated in the circumferential direction and projection data in each direction is obtained by the rotation of the collimator part 4. Because this collimator is constituted so that the collimator parts 3, 4 are separated to each other, manufacturing is easy and accuracy is enhanced and, because the collimator parts 3 are placed in the side of a person 10 to be collimated, the safety to the person is enhanced.


Inventors:
HATTORI HIROYUKI
MATSUYAMA TSUNEKAZU
Application Number:
JP1985000167313
Publication Date:
February 05, 1987
Filing Date:
July 29, 1985
Export Citation:
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Assignee:
SHIMADZU CORP
International Classes:
G01T1/161; (IPC1-7): G01T1/161