Title: Radiodiagnostic apparatus
Application Number: 200610073209 Application Date: 2006.04.05
Publication Number: 1847883 Publication Date: 2006.10.18
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01T1/161
Applicant(s) Name: Tokyo Shibaura Electric Co. Address:
Inventor(s) Name: Motomura Nobutoku
Attorney & Agent: wang sibeng
Abstract:
     A radiodiagnostic apparatus includes a data collection unit, a primary correction unit, a body contour detection unit, a secondary correction unit, and a reconstruction unit. The data collection unit collects a first projection data obtained at a projection angle within a projection angle range in which the whole portion of an object is within an effective acquisition field of a detector, and a second projection data obtained at a projection angle within a projection angle range in which a part of a truncated portion is out of the effective acquisition field of the detector, when the effective acquisition field of the detector is defined as a range limited by a collimator. The primary correction unit calculates a plurality of primary extrapolation expression candidates for correcting the second projection data so as to obtain third projection data candidates formed from the second projection data and the plurality of primary extrapolation expression candidates and for obtaining third projection data from the plurality of third projection data candidates. The body contour detection unit detects position information of a body contour in the second projection data. The secondary correction unit acquires a secondary extrapolation expression and for obtaining fourth projection data. The reconstruction unit reconstructs images on a slice-by-slice basis on the basis of the first projection data and the fourth projection data.
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