Abstract: The invention is directed to several crystal arrangements for time-of-flight (ToF) positron emission tomography (PET) with depth of interaction (DOI) encoding for high spatial, energy and timing resolution. Additionally, several implementations of the ToF-DOI PET detector arrays are proposed with related measurements which all show that no timing degradation is visible in the used setup for first photon trigger for digital silicon photo multipliers (dSiPMs).

Abstract: The present invention relates to a method and a system for reducing interference between a non-MR imaging system (e.g. a PET imaging scanner) and an MR imaging system. The method comprises receiving at least a signal indicative of the MR RF signal detection period, and in response to the received signal, setting the state of at least a portion of the non-MR imaging system to an inactive state during at least a portion of the MR RF signal detection period.

Abstract: A PET or SPECT radiation detector module (50) includes an array of detectors (54, 58) and their associated processing circuitry are connected by a flexible cable having releasable connectors. A method of mounting and dismounting includes mounting a radiation detector array in a support structure in a diagnostic scanner, connecting one end of a flexible connector to the detector array, and connecting the other end of the flexible connector to its associated circuitry.

Abstract: The invention is directed to several crystal arrangements for time-of-flight (ToF) positron emission tomography (PET) with depth of interaction (DOI) encoding for high spatial, energy and timing resolution. Additionally, several implementations of the ToF-DOI PET detector arrays are proposed with related measurements which all show that no timing degradation is visible in the used setup for first photon trigger for digital silicon photo multipliers (dSiPMs).

Abstract: A continuous mixing vessel for polymer processing materials characterized in that the progress of the materials being mixed through the mixing volume is substantially vertical so as to permit natural subsidence of the materials, whereby mixture of the materials is caused by the effects of the different subsiding speeds of the materials and the gradient in the subsiding speed between the center and wall portions of the mixing vessel. Horizontal agitators are preferably provided, but they must induce no vertical movement of the materials. A hot wind may be introduced into a lower portion of the mixing vessel and be exhausted from an upper portion of the mixing vessel after having dried the materials as it moves through them in counterflow.