| 摘要 |
<p>This invention relates to ultrasound imaging, more specifically to a method of ultrasound investigation involving the use of an ultrasound contrast agent and administration of at least two gases or gas mixtures having different partial pressure of inert gas. The method may be used in assessing blood perfusion in tissue. A timed change of administered gases gives a subsequent change in contrast echogenicity. The gases are preferably administered by inhalation. The invention further relates to gas-microbubble containing ultrasound contrast agents used according to the method, and to kits to be used in assessments of tissue perfusion.</p> |
