Method for scanning an examination subject with a CT device

• US 6,320,929 B1
• Filed: 02/08/2000
• Issued: 11/20/2001
• Est. Priority Date: 02/12/1999
• Status: Expired due to Term

• Current Assignee: Siemens Healthcare GMBH (Siemens AG)
• Original Assignee: Siemens AG
• Inventors: Von Der Haar, Thomas
• Primary Examiner(s): DUNN, DREW A
• Application Number:
  US09/500,025
• Time in Patent Office: 651 Days
• Field of Search: 378/4, 378/901, 378/145, 378/147, 378/148, 378/149, 378/150, 378/19, 378/15
• US Class Current: 378/4
• 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]
• CPC Class Codes: A61B 6/06 Diaphragms
• CPC Class Codes: G21K 1/04 using variable diaphragms, shutters, choppers
• CPC Class Codes: Y10S 378/901 Computer tomography program or processor

Abstract

In a method for scanning an examination subject and a CT (computed tomography) device for implementing the method, the cross-section of the X-ray beam emanating from the X-ray source of the device is modified during the scan so that, at all times, substantially only the region of the examination subject that is used for the reconstruction of images is penetrated by the X-ray beam.

Claims