Global Patent Index - EP 1576446 A4

EP 1576446 A4 2009-02-18 - 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 (EN)

Application

EP 03812496 A

Priority

  • US 0338375 W
  • US 4200202 P
  • US 38953403 A

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 (main, further and additional classification)

A61B 6/03

IPC 8 full level (invention and additional information)

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

IPC 8 main group level (invention and additional information)

G06F (2006.01)

CPC (invention and additional information)

G06T 11/005 (2013.01); A61B 6/027 (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 also references of WO 2004051431A3

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

EPO simple patent family

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

INPADOC legal status


2009-03-25 [18W] APPLICATION WITHDRAWN

- Effective date: 20090211

2009-02-18 [A4] DESPATCH OF SUPPLEMENTARY SEARCH REPORT

- Effective date: 20090121

2006-07-05 [RAP1] TRANSFER OF RIGHTS OF AN APPLICATION

- Owner name: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION,

2006-03-29 [DAX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT (TO ANY COUNTRY) (DELETED)

2006-03-01 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: A61B 6/03 20060101AFI20060110BHEP

2005-09-21 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20050610

2005-09-21 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): 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

2005-09-21 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Countries: AL LT LV MK