Global Patent Index - EP 1576446 A4

EP 1576446 A4 20090218 - 3PI ALGORITHM FOR SPIRAL CT

Title (en)

3PI ALGORITHM FOR SPIRAL CT

Title (de)

3PI-ALGORITHMUS FÜR SPIRAL-CT

Title (fr)

ALGORITHME 3PI POUR TOMOGRAPHIE INFORMATIQUE EN SPIRALE

Publication

EP 1576446 A4 20090218 (EN)

Application

EP 03812496 A 20031204

Priority

  • US 0338375 W 20031204
  • US 4200202 P 20021204
  • US 38953403 A 20030314

Abstract (en)

[origin: WO2004051431A2] Methods and systems for reconstructing images of moving objects being spirally scanned with two dimensional detectors with a 3PI algorithm. The moving objects can be scanned at a rate of up to approximately three times slower than those of pre-existing systems. In a preferred embodiment, the invention allows for a patient on a table moving through a spiral scanner to be slowed down by a factor of up to three, and still use the same size detector array as those in existing spiral scanning systems.

IPC 1-7

A61B 6/03

IPC 8 full level

A61B 6/03 (2006.01); G06F 1/00 (2006.01); G06T 11/00 (2006.01)

IPC 8 main group level

G06F (2006.01)

CPC (source: EP)

A61B 6/027 (2013.01); G06T 11/005 (2013.01); G06T 2211/416 (2013.01); G06T 2211/421 (2013.01)

Citation (search report)

  • [PX] EP 1308898 A2 20030507 - SIEMENS CORP RES INC [US]
  • [XA] PROSKA, KÖHLER, GRASS, TIMMER: "The n-PI-method for Helical Cone-Beam CT", IEEE TRANSACTIONS ON MEDICAL IMAGING, vol. 19, no. 9, 1 October 2000 (2000-10-01), IEEE, pages 848 - 863, XP002509702, Retrieved from the Internet <URL:http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=00887834> [retrieved on 20090108]
  • [XA] A. KATSEVICH: "Theoretically exact filtered backprojection-type inversion algorithm for spiral CT", SOCIETY FOR INDUSTRIAL AND APPLIED MATHEMATICS, vol. 62, no. 6, 3 July 2002 (2002-07-03), SIAM J. APPL. MATH., pages 2012 - 2026, XP002509703, Retrieved from the Internet <URL:http://digilander.libero.it/Spiral_CT/document/DOC_24.pdf> [retrieved on 20090108]
  • See references of WO 2004051431A2

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

DOCDB simple family (publication)

WO 2004051431 A2 20040617; WO 2004051431 A3 20051229; AU 2003300812 A1 20040623; AU 2003300812 A8 20040623; EP 1576446 A2 20050921; EP 1576446 A4 20090218; JP 2006524059 A 20061026

DOCDB simple family (application)

US 0338375 W 20031204; AU 2003300812 A 20031204; EP 03812496 A 20031204; JP 2004570998 A 20031204