Asthma MRI: Difference between revisions
Jump to navigation
Jump to search
mNo edit summary |
No edit summary |
||
| Line 6: | Line 6: | ||
==Nuclear Imaging== | ==Nuclear Imaging== | ||
Radio-aerosol lung scintigraphy with technetium has been shown to precisely evaluate the extent of aerosol and particulate distribution and absorption through the entire air passage. In asthmatics receiving dry-powder inhalers as opposed to metered-dose inhalers, technetium scintigraphy may be used to demonstrate improved peripheral lung distribution of [[steroids]]. Ventilation defects may also be detected using technetium-99m DTPA. | * Radio-aerosol lung scintigraphy with technetium has been shown to precisely evaluate the extent of aerosol and particulate distribution and absorption through the entire air passage. | ||
* In asthmatics receiving dry-powder inhalers as opposed to metered-dose inhalers, technetium scintigraphy may be used to demonstrate improved peripheral lung distribution of [[steroids]]. | |||
* Ventilation defects may also be detected using technetium-99m DTPA. | |||
==References== | ==References== | ||
| Line 12: | Line 14: | ||
[[Category:Medical imaging]] | [[Category:Medical imaging]] | ||
[[Category:Pulmonology]] | [[Category:Pulmonology]] | ||
[[Category:Emergency medicine]] | [[Category:Emergency medicine]] | ||
[[Category:Intensive care medicine]] | [[Category:Intensive care medicine]] | ||
[[Category:Up-To-Date]] | [[Category:Up-To-Date]] | ||
{{WH}} | {{WH}} | ||
{{WS}} | {{WS}} | ||
Revision as of 17:31, 7 October 2011
|
Asthma Microchapters |
|
Diagnosis |
|---|
|
Other Diagnostic Studies |
|
Treatment |
|
Case Studies |
|
Asthma MRI On the Web |
|
American Roentgen Ray Society Images of Asthma MRI |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-In-Chief: Lakshmi Gopalakrishnan, M.B.B.S. [2]
MRI
Functional MRIs help to measure the actual lung ventilation and localize the precise pathological area involved during an acute asthmatic attack. The use of special paramagnetic gases enhance the low signal-to-noise ratio of conventional spin-echo and gradient-echo techniques a several fold times, which in turn, abolishes the disadvantages induced by the air-alveolar interfaces.
Nuclear Imaging
- Radio-aerosol lung scintigraphy with technetium has been shown to precisely evaluate the extent of aerosol and particulate distribution and absorption through the entire air passage.
- In asthmatics receiving dry-powder inhalers as opposed to metered-dose inhalers, technetium scintigraphy may be used to demonstrate improved peripheral lung distribution of steroids.
- Ventilation defects may also be detected using technetium-99m DTPA.