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US 2003/0114743 A1Published application
Method of improving the resolution of a medical nuclear image
AssigneeKoninklijke Philips Electronics N.V.
InventorKai Eck
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AssigneeKoninklijke Philips Electronics N.V.
InventorKai Eck
Estimating the term…
The invention relates to a method of improving the precision of a medical nuclear SPECT or PET image in which notably a nuclear sectional image (n) can be superposed on a two-dimensional ultrasound image (u). For the superposition that nuclear sectional image (n0) which exhibits the best correspondence with a free-hand ultrasound image (u) is chosen from a three-dimensional nuclear image (2). In order to determine this sectional image, an evaluation index f(n,u) is calculated, on the basis of an estimated value (1), for differently situated nuclear sectional images (n). This index assigns a positive value to positions of structures (heart muscle tissue etc.) which correspond in the two images, a neutral value to structures which are represented only in the ultrasound image (u) and a negative value to structures which are represented only in the nuclear sectional image (n). The nuclear sectional image (n0) having the highest value of the evaluation index is subsequently displayed so as to be superposed on the ultrasound image. In a generalized form the method can also be carried out in conjunction with three-dimensional ultrasound images.
A method of improving the resolution of a medical nuclear image of a body volume by combining it with an ultrasound image of the same body volume, the method comprising for various assumed relative positions of the nuclear medical image and the ultrasound image each time an evaluation index concerning the correspondence of a nuclear sub-image and an ultrasound sub-image of the same region of the body volume is calculated, and the relative position having the optimum value of the evaluation index is selected as the spatial registration position of the nuclear sub-image and the ultrasound sub-image.
A device for the imaging of a body volume comprising:
A method of improving the resolution of a medical nuclear image of a body volume by combining it with an ultrasound image of the same body volume, the method comprising;
An apparatus for improving the resolution of a medical nuclear image of a body volume by combining it with an ultrasound image of the same body volume, the apparatus comprising;
Dependencies are inferred from the claim text.