Method for operating a computed tomography device

• US 7,162,064 B2
• Filed: 04/23/2001
• Issued: 01/09/2007
• Est. Priority Date: 04/25/2000
• Status: Active Grant

• Current Assignee: Siemens Healthcare GMBH (Siemens AG)
• Original Assignee: Siemens AG
• Inventors: Klingenbeck-Regn, Klaus
• Primary Examiner(s): Mehta; Bhavesh M.
• Assistant Examiner(s): Seth; Manav
• Application Number:
  US10/258,303
• Publication Number:
  US 20040013293A1
• Time in Patent Office: 2,087 Days
• Field of Search: 382130-132, 382/128, 382/154, 382/285, 378/4, 378/8, 378/15, 378/16, 378/18, 378/20, 378/21, 378/95, 378/162
• US Class Current: 382/131
• CPC Class Codes: A61B 6/027 characterised by the use of a particular data acquisition trajectory, e.g. helical or spiral
• CPC Class Codes: A61B 6/032 Transmission computed tomography [CT]

Abstract

A method for operating a computed tomograph device is provided by which volume data pertaining to a volume area of a test object can be recorded. A marking for identifying a reconstruction area to be reconstructed is faded into an x-ray shadow image containing the volume area, wherein a split image of the beginning and/or end of the reconstruction area is reconstructed from the volume data in order to verify the position of the reconstruction area.

Claims

1. A method of operating a CT device, by which volume data pertaining to a volume region of a test object are recorded, comprising the steps of:

a) recording volume data pertaining to a volume region of a test object and creating and displaying a topogram of the volume region from the volume data,

b) inserting at least one marking into the topogram X-ray shadow image for identifying a designated reconstruction region, with respect to which image data are to be reconstructed from volume data,

c) reconstructing and displaying a slice of at least one of a start and an end of the designated reconstruction region from the volume data recorded, and

d) reconstructing only image data pertaining to each designated reconstruction region.

2. The method as claimed in claim 1, comprising assigning at least one reconstruction parameter to said reconstruction region, and reconstructing only image data pertaining to the reconstruction region dependent on the reconstruction parameters assigned thereto.

3. The method as claimed in claim 2, comprising predefining at least one of a layer thickness and a convolution kernel as said at least one reconstruction parameter.

4. The method as claimed in claim 1 comprising marking a plurality of designated reconstruction regions.

5. The method as claimed in claim 4, comprising marking a plurality of designated reconstruction regions which at least partially overlap one another.

6. The method as claimed in claim 1 comprising recording the volume data in a spiral scan.