Thermoacoustic tomographic method and thermoacoustic tomograph
First Claim
Patent Images
1. A thermoacoustic tomograph for imaging an object, comprising:
- at least one excitation source configured to thermally excite the object;
at least one large-area or integrating line detector for detecting acoustic waves caused by the object upon excitation thereof by said source, said at least one detector having a size chosen in dependence on a distance between said detector and a point of the object that is furthest away from said detector, wherein d denotes the distance between said detector and a point of the object that is furthest away from said detector, and wherein said detector has at least one dimension with an extent of at least √
{square root over (8)}·
d;
a movement device for moving the object and/or the at least one detector relative to one another; and
a device connected to said detector for reconstructing an image of the object from the acoustic waves detected by said detector in dependence on a respective position of the object.
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Abstract
A thermoacoustic tomographic method for imaging an object, wherein the object is thermally excited by a source and the acoustic waves from the object, which are caused by the thermal excitation, from different directions of the object are detected using at least one detector and an image of the object is reconstructed from the detected acoustic waves and the positional information, wherein the acoustic waves detected by the detector are integrated at least in one direction over a length of at least √{square root over (8)}·d, where d denotes the maximum distance from a point of the object to be imaged to the detector.
35 Citations
21 Claims
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1. A thermoacoustic tomograph for imaging an object, comprising:
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at least one excitation source configured to thermally excite the object; at least one large-area or integrating line detector for detecting acoustic waves caused by the object upon excitation thereof by said source, said at least one detector having a size chosen in dependence on a distance between said detector and a point of the object that is furthest away from said detector, wherein d denotes the distance between said detector and a point of the object that is furthest away from said detector, and wherein said detector has at least one dimension with an extent of at least √
{square root over (8)}·
d;a movement device for moving the object and/or the at least one detector relative to one another; and a device connected to said detector for reconstructing an image of the object from the acoustic waves detected by said detector in dependence on a respective position of the object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification