Patent · US Expired

In or relating to contrast agents

US6595925B1 · kind B1 · utility

2Cited by

2References

22Claims

0Family size

Assignee

Amersham Health AS · NO

Inventors

Jonny Østensen · Oslo, NO
Morten Eriksen · Oslo, NO
Audun Tornes · Oslo, NO
Sigmund Frigstad · Trondheim, NO

Key dates

Filing date	Feb 14, 2000
Grant date	Jul 22, 2003
Priority date	—
Expiry date	Feb 14, 2020

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K49/223
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Ultrasound imaging using gas microbubble-containing contrast agents may be performed in the recirculating phase following admixture of the contrast agent with the blood pool, thereby prolonging the useful imaging time window compared to that conventionally obtained during the backscatter signal peak resulting from first pass of a contrast agent bolus. The length of the time window may further be increased by imaging at ultrasound frequencies of 2 MHz or less, particularly by harmonic imaging at transmit frequencies less than the resonance frequencies of the gas microbubbles.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.