Abstract: A method and apparatus are provided for reducing motion related imaging artifacts. The method includes determining an internal motion for of two regions of the object, each region having a different level of motion, scanning the first region using a first scan protocol based on the motion, scanning a second region using a second different scan protocol based on the motion, and generating an image of the object based on the first and second regions.

Abstract: The method calculates a scatter estimate for scatter correction of detection data from a subject in a positron emission tomographic scanner. The detection data represent the scattered events and unscattered events of annihilation photons emitted in the subject. The method uses the following steps: determine an estimate of the unscattered events; determine a simulation of the scattered events; determine a value of a scaling factor by fitting the sum of the estimate of the unscattered events and a product of the scaling factor and the simulation of the scattered events to the detection data; and determine the scatter estimate as the product of the scaling factor having said value and the simulation of the scattered events.

Abstract: A method and apparatus are provided for reducing motion related imaging artifacts. The method includes determining an internal motion for of two regions of the object, each region having a different level of motion, scanning the first region using a first scan protocol based on the motion, scanning a second region using a second different scan protocol based on the motion, and generating an image of the object based on the first and second regions.

Abstract: A method and apparatus are provided for reducing motion related imaging artifacts. The method includes obtaining an image data set of a region of interest in an object, obtaining a motion signal indicative of motion of the region of interest, and determining a displacement and a phase of at least a portion of the motion signal. The method also includes mapping the image data set into a matrix based on the displacement and phase of the motion signal, and generating an image of the region of interest from the matrix.

Abstract: The invention relates to compounds of formula: (I) or a salt or solvate thereof, wherein: R1 is —11CH2R5 or [18F]—C1-4 fluoroalkyl wherein R5 is hydrogen or C1-4 alkyl; R2 is hydrogen or C1-4 alkyl; R3 is halo; and R4 is halo, C1-4 alkylthio, or C1-4 alkyl; and their use for imaging central nervous system (CNS) receptors.

Abstract: The invention provides a process for preparation of a fluorohaloalkane, preferably an [18F]fluorohaloalkane of formula (I) wherein X is halo and n is an integer of from 1 to 6; which comprises: reaction of the corresponding organosilicon compound of formula (II): wherein n is as defined for the compound of formula (I); and R?, R?, and R?? are independently selected from C1-6 alkyl and C1-6 haloalkyl; and R? may alternatively be the group: with a compound of formula (III): wherein X is as defined for the compound of formula (I) and Y is halo. Intermediates having use in such processes are also claimed.

Abstract: The invention relates to a process for the production of an [18F]fluorohaloalkane which comprises treatment of a solid support-bound precursor of formula (I): SOLID SUPPORT-LINKER-SO2—O—(CH2)nX (I) wherein n is an integer of from (1) to (7) and X is chloro, bromo or iodo; with 18F? to produce the [18F]fluorohaloalkane of formula (II) 18F—(CH2)n—X (II) wherein n and X are as defined for the compound of formula (I), optionally followed by (i) removal of excess 18F?, for example by ion-exchange chromatography; and/or (ii) removal of organic solvent.

Abstract: The invention relates to compounds of formula (I); wherein R1 and R2 independently selected from C1-6 alkyl; P1, P2, P3, and P4 are each independently hydrogen or a protecting group; and their use in the preparation of 18F-labelled 6-L-fluorodopa