Global patent index - EP 0973433 A1

EP 0973433 A1 2000-01-26 - COMPUTED TOMOGRAPHIC COLONSCOPY

Title (en)

COMPUTED TOMOGRAPHIC COLONSCOPY

Title (de)

RECHNER UNTERSTÜTZTE TOMOGRAPHISCHE KOLONOSKOPIE

Title (fr)

COLOSCOPIE TOMOGRAPHIQUE ASSISTEE PAR ORDINATEUR

Publication

EP 0973433 A1 (EN)

Application

EP 95939881 A

Priority

  • CA 2234767 A
  • US 9514634 W

Abstract (en)

[origin: WO9714352A1] A generally non-invasive method of colon examination in which the patient's colon is first inflated with gas, and then a plurality of cross-sectional images of the colon are taken by CT scanning along the longitudinal axis of the abdomen. Sets of data corresponding to each cross-sectional image are stored in computer memory. These sets of data are processed by a first computer program that reconstructs a three-dimensional model of the entire colon. Data corresponding to the reconstructed three-dimensional model of the colon are also stored in computer memory. A second computer program processes the original sets of data and the three-dimensional model data to reconstruct, for successive thin segments along the length of the entire colon, a cross-sectional image for each segment which is perpendicular to the longitudinal axis of the colon lumen. These reconstructed images, which provide an exact simulation of the interior of the colon that would be viewed by means of colonoscopy, can be retrieved from memory and displayed for examination on a conventional video monitor, enabling the physician to detect any abnormalities of the colon wall anatomy which would tend to indicate the presence of an abnormality such as a polyp or tumor.

IPC 1-7 (main, further and additional classification)

A61B 5/00; A61B 6/03; A61B 6/00

IPC 8 full level (invention and additional information)

A61B 5/00 (2006.01); A61B 6/00 (2006.01)

CPC (invention and additional information)

A61B 6/481 (2013.01); A61B 6/032 (2013.01)

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9714352 A1 19970424; AU 4153996 A 19970507; AU 718433 B2 20000413; CA 2234767 A1 19970424; EP 0973433 A1 20000126; EP 0973433 A4 20000126

INPADOC legal status

2003-04-23 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20021008

2002-05-15 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020327

2000-01-26 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19980416

2000-01-26 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 19990611

2000-01-26 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

2000-01-26 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

2000-01-26 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free Format Text: LT PAYMENT 19980416;LV PAYMENT 19980416;SI PAYMENT 19980416