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AssigneeKoninklijke Philips Electronics N.V.
InventorsHolger Eggers, Steffen Weiss
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The invention relates to an MR method and an MR device for the formation of MR images of an examination zone of an object (10) to be examined. An excitation coil (21) which includes at least one movable and/or flexible excitation coil (19) is used therein for the excitation of the examination zone to be imaged and/or a receiving coil system which includes at least one movable and/or flexible receiving coil (61, 62, 63) is used for the acquisition of MR data from the examination zone. In order to enable the acquisition of MR images with a high accuracy and notably a high spatial and temporal resolution, it is proposed to acquire information concerning the position and orientation of the receiving coils (61, 62, 63) or the at least one excitation coil (19) and to utilize the acquired information for the correction of the input data for the reconstruction or for the correction of the excitation signal of the at least one excitation coil (19). Motions and/or deformations of coils during the acquisition of MR data can thus be taken into account.
An MR method for forming MR images of an examination zone of an object to be examined, in which method MR data is acquired from the examination zone by means of a receiving coil system which includes at least one movable and/or flexible receiving coil, and in which the MR images are reconstructed from the MR data acquired, wherein information concerning the position and orientation of the at least one receiving coil is acquired during the acquisition of the MR data and that input data for the reconstruction is corrected on the basis of the acquired information concerning the position and orientation in order to compensate changes in the position and/or orientation of the at least one receiving coil during the acquisition of the MR data prior to the reconstruction of the MR images.
An MR device for forming MR images of an examination zone of an object to be examined, which device includes a receiving coil system which includes at least one movable and/or flexible receiving coil for the acquisition of MR data from the examination zone, and also includes a reconstruction unit for the reconstruction of MR images from the acquired MR data and means for the acquisition of information concerning the position and orientation of the at least one receiving coil, wherein the reconstruction unit includes means for the correction of input data for the reconstruction on the basis of the acquired information concerning the position and orientation of the at least one receiving coil prior to the reconstruction of the MR images in order to compensate changes in the position and/or orientation of the at least one receiving coil during the acquisition of the MR data.
An MR method for forming MR images of an examination zone of an object to be examined, in which method the examination zone to be imaged is excited by means of an excitation coil system which includes at least one movable and/or flexible excitation coil, wherein information concerning the position and orientation of the at least one excitation coil is acquired during the excitation of the examination zone and that the excitation signal of the at least one excitation coil is corrected on the basis of the acquired information concerning position and orientation in order to compensate changes in the position and/or orientation of the at least one excitation coil during the excitation.
An MR device for forming MR images of an examination zone of an object to be examined, which device includes an excitation coil system which includes at least one excitation coil for the excitation of the examination zone to be imaged, and also includes a control unit for controlling the excitation coil system and means for the acquisition of information concerning the position and orientation of the at least one excitation coil during the excitation of the examination zone, wherein the control unit includes means for the correction of the excitation signal of the at least one excitation coil in order to compensate changes in the position and/or orientation of the at least one excitation coil during the excitation.
Dependencies are inferred from the claim text.