General Electric Company

Ge Precision Healthcare LLC

Moshe Levy

Jean-Paul Bouhnik

Omri Warshavski

Yaron Hefetz

Roee Khen

Jonathan Sachs

Yariv Grobshtein

Sergio Steinfeld

Nathan Hermony

Gil Amisar

Amir Abecassis

Ilya Dudarev

Rani Zananiri

Methods and systems are provided for additive manufacturing of collimators for medical imaging applications. In one example, a collimator may include a plurality of collimator segments including a plurality of septa, wherein at least one collimator segment may be interlocked with at least one adjacent collimator segment via mating of one or more projections with one or more complementary recesses, each of the one or more projections including a lengthwise portion of at least one septum of the plurality of septa.

Methods and systems for additive manufacturing of collimators for medical imaging

A detector assembly is provided that includes a semiconductor detector, a collimator, and a processing unit. The semiconductor detector has a first surface and a second surface opposed to each other. The first surface includes pixelated anodes, and the second surface includes a cathode electrode. The collimator includes openings defined by septa. The collimator defines a pitch D between adjacent septa, with the septa defining a septa length L. A ratio of L/D is less than 14. The processing unit is configured to identify detected events within virtual sub-pixels distributed along a length and width of the semiconductor detector. Each pixel comprises a plurality of corresponding virtual sub-pixels, and absorbed photons are counted as events in a corresponding virtual sub-pixel.

Systems and methods for improved detector assembly sizing

Methods and systems are provided for calibrating a nuclear medicine imaging system having more than 5 detector heads. In one embodiment, a method includes obtaining residual center of gravity determinations corresponding to each of a plurality of detector units based on point source projections acquired over a series of detector unit rotational steps, obtaining center of gravity determinations for each of the plurality of detector units based on point source projections acquired over a series of detector unit sweep angles, obtaining a fit of the center of gravity determinations for each of the plurality of detector units, and determining a sweep offset for each of the plurality of detector units based on the residual center of gravity determinations and the fit of the center of gravity determinations for each of the plurality of detector units. In this way, a sweep axis zero degree position for each of the plurality of detector units is determined.

Systems and methods for mechanically calibrating a multidetector of a nuclear medicine imaging system

Methods and systems are provided for calibrating a nuclear medicine imaging system. In one embodiment, a method comprises: detecting, with a plurality of detectors, photons emitted by a calibration source comprising a radioactive line source and a fluorescence source, while pivoting one or more detectors of the plurality of detectors; and calibrating, with a processor communicatively coupled to the plurality of detectors, each detector of the plurality of detectors based on energy measurements of the detected photons. In this way, a two-point energy calibration of detectors can be performed with a single isotope, and without removing or adjusting a collimator attached to the detector.

Systems and methods for calibrating a nuclear medicine imaging system

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Zichron Yaakov, Israel

Moshe Levy