Koninklijke Philips Corporation N.V.

Jason Stephen Wiener

Joerg Bredno

Eberhard Sebastian Hansis

David Sowards-Emmerd

Lingxiong Shao

Sven Prevrhal

Jody L Garrard

Raymond Charles D'Ambrosio

Merlene Robergeau

In Positron Emission Tomography, a time window () and an energy window () are dynamically adjusted, based on an attenuation map, count rate, clinical application, discrimination tailoring, and/or offline discrimination tailoring. Detected radiation events are filtered using the dynamically adjusted energy and time windows into scattered events, random events, and true events. The true events are input to image reconstruction, correction, and error analysis.

Data-driven optimization of event acceptance/rejection logic

A method comprises: acquiring imaging data using a tomographic radiological imaging apparatus (); updating a calibration () based on current information about the imaging apparatus; calibrating the imaging data using the up-to-date calibration; and reconstructing the calibrated imaging data to generate an image. The updating may be based on a current state of an idle or parked imaging modality that is not used in acquiring the imaging data, or on a measurement acquired together with the imaging data, or on the imaging data itself. For cone-beam computed tomography (CBCT) imaging data, the updating may comprise determining an intensity scale based upon intensity of at least one air pixel measured during the acquiring of the CBCT imaging data and updating an air scan template () by the intensity scale.

Adaptive calibration for tomographic imaging systems

A pallet () for use with a gamma camera includes a rigid sheet () having a thickness (d) of less than six millimeters and a strength-enhancing curvature transverse to an axial direction (DA). At least a portion of an edge () of the rigid sheet has a bevel (B) with a length (x) along the sheet of at least about ten millimeters and a height (y) of at least about four-fifths of the sheet thickness. A protective covering () is disposed over the beveled edge. In a nuclear imaging method, a subject is disposed on the rigid sheet and a radiological image is acquired of at least a portion of the subject disposed on the sheet with at least one radiation detector head () positioned underneath or at an oblique angle below the subject. The bevel is effective to reduce or blur an edge artifact in the acquired image.

Chamfered pallet for nuclear medicine

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Fremont, CA, United States of America

Jason Stephen Wiener