Patent ID: 7603162

Claim:
An imaging tomography apparatus comprising: a stationary unit having a patient opening therein; an imaging data acquisition device rotatably mounted in said stationary unit, said imaging data acquisition device rotating around an axis and around said patient opening, said data acquisition device having a structural configuration subject to simultaneously occurring axial imbalance and radial imbalance with respect to said axis; and in each of two parallel planes of said imaging data acquisition device, axially separated from each other, at least three chambers respectively containing fluid, with at least one conduit placing at least two of said at least three chambers in fluid communication allowing fluid exchange between said at least two of said at least three chambers to alter respective amounts of said fluid in said at least two of said at least three chambers, said at least three chambers in each of said two parallel planes, with said fluid therein, forming a compensation weight system that compensates an out-of-balance condition of said imaging data acquisition device, caused by both said axial imbalance and said radial imbalance, dependent on respective amounts of said fluid in said at least three chambers.