Multifunctional self-conversion multi-pinhole collimator and operating method thereof

Abstract

The invention discloses a multifunctional self-conversion multi-pinhole collimator and an operating method thereof. The multi-pinhole collimator comprises an external shielding component, an internalshielding component and a motion component. The external shielding component comprises an external shielding barrel and an external shielding frame; the internal shielding component comprises an internal shielding barrel and an internal shielding frame; the internal shielding barrel internally sleeves the external shielding barrel through the internal shielding frame and the external shielding frame; the motion component is a device which drives the internal shielding barrel and the external shielding barrel to generate relative displacement along own center axis; the internal shielding barrelis provided with a plurality of rows of pinholes along the direction of own center axis, the pinholes in the same row are peripherally distributed along the internal shielding barrel, and the rows ofthe pinholes are different in diameter and distance. By relative motion of the internal shielding barrel and the external shielding barrel, multifunctional quick and flexible changing and conversionof different resolutions, different view angles, different view fields, different sensitivities and the like can be realized, and complicated operation of mounting another collimator due to requirement of replacement of collimators with different functions is avoided.

Description

technical field [0001] The invention relates to the field of collimators, in particular to a multi-functional self-converting multi-pinhole collimator and an operating method thereof. Background technique [0002] Nuclear medicine equipment used in medicine typically includes detectors and collimators. Nuclear scanning systems generally require collimators with different functions to achieve different diagnostic purposes, and thus the collimators need to be replaced as needed. [0003] At present, in the domestic and foreign markets, in the nuclear medicine equipment (mostly SPECT, PET) in the hospital, the collimator is mostly the parallel hole collimator (LEHR-SPECT). Each collimator is installed on a probe (detector), and the scan is completed by rotating around the acquisition target, and then three-dimensional imaging is established; multi-pinhole collimators are used in the diagnosis of small organs, mostly for heart and thyroid diagnosis superior. The realization o...

AI Technical Summary

Problems solved by technology

However, the existing collimator has a single function. When it is necessary to switch to a collimator with other functions, it is necessary to remove or remove one collimator automatically or manually to install another collimator with the required function. Collimator

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