| Dictionary, Encyclopedia and Thesaurus - The Free Dictionary 1,733,566,445 visitors served. |
|
Dictionary/ thesaurus | Medical dictionary | Legal dictionary | Financial dictionary | Acronyms | Idioms | Encyclopedia | Wikipedia encyclopedia | ? |
hyperpolarized helium |
0.02 sec. |
|
hyperpolarized helium [-pō′lərīzd] a gas used in magnetic resonance imaging studies of respiratory disorders to produce images of the air spaces in the lungs. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
|
| ? Mentioned in | ? References in periodicals archive | |
|---|---|---|
| The researchers developed a method of using hyperpolarized helium gas to observe the lung as gas flows in and out, providing them high-resolution images of human ventilation. Evidence for severe heterogeneity of regional ventilation in patients with asthma has come from measurements with external scintillation counters (1,2), single-photon emission computed tomography (CT) of Technegas (3), nuclear magnetic resonance imaging after a single-breath inhalation of hyperpolarized helium (4), and high-resolution CT (5-10). With selected bronchi occluded, collateral resistance may be inferred from the distribution of inhaled gas during a single breath using xenon and ventilation scintigraphy or hyperpolarized helium and magnetic resonance imaging (10). |
| Medical Dictionary |
| Free Tools: |
For surfers:
Free toolbar & extensions |
Word of the Day |
Help
For webmasters: Free content | Linking | Lookup box | Double-click lookup | Partner with us |
|---|