EP 1021128 A1 20000726 - COMPUTED TOMOGRAPHY SCANNING TARGET DETECTION
Title (en)
COMPUTED TOMOGRAPHY SCANNING TARGET DETECTION
Title (de)
ZIELERFASSUNG BEI DER COMPUTERTOMOGRAPHIE
Title (fr)
DETECTION DE CIBLE PAR TOMOGRAPHIE ASSISTEE PAR ORDINATEUR
Publication
Application
Priority
- US 9818561 W 19980904
- US 94849197 A 19971010
- US 94849297 A 19971010
- US 94869797 A 19971010
Abstract (en)
[origin: WO9918854A1] Using helical cone beam (114) scanning, a nutating slice CT system generates three-dimensional projection data and reconstructs a series of planar image slices (132) having equal tilt angles ( theta ) and changing rotation angles with respect to the longitudinal axis of the scanned object, causing the normals to nutate and process about the longitudinal axis (Z). Conventional two-dimensional reconstruction is used, since the projection data (130) of the tilted slices (132) is one-dimensional fan beam data. Two-dimensional images may be created at stationary projection angles. Nutation or tilt of voxels may be compensated, and parallel processing may be used.
IPC 1-7
IPC 8 full level
CPC (source: EP)
A61B 6/027 (2013.01); A61B 6/032 (2013.01); A61B 6/5258 (2013.01); G06T 11/005 (2013.01)
Citation (search report)
See references of WO 9918854A1
Designated contracting state (EPC)
DE GB NL
DOCDB simple family (publication)
WO 9918854 A1 19990422; AU 9474398 A 19990503; CN 1336811 A 20020220; EP 1021128 A1 20000726; JP 2001519192 A 20011023; JP 3585835 B2 20041104
DOCDB simple family (application)
US 9818561 W 19980904; AU 9474398 A 19980904; CN 98810035 A 19980904; EP 98948103 A 19980904; JP 2000515496 A 19980904