Clinical ventilation imaging with In-113m aerosol: a comparison with Kr-81m.
J Nucl Med
; 23(4): 306-14, 1982 Apr.
Article
em En
| MEDLINE
| ID: mdl-7069494
ABSTRACT
Following routine ventilation (Kr-81m)/perfusion (Tc-99m) scanning, we obtained aerosol ventilation scans using a solution of In-113m albumin and a settling-bag system. The large-volume settling bag reduces deposition of particles in the large airway by removing large droplets. The patient inhales the aerosol with 5-10 min of tidal breathing, then lung scans are obtained on a gamma camera. The energy of In-113m allows the ventilation scanning to be performed after Tc-99m perfusion scanning. Semiquantitative scoring of regional ventilation showed a close correlation (r = 0.97) between Kr-81m and In-113m aerosol ventilation scans. The aerosol technique gave a slight underestimation of ventilation compared with Kr-81m. This is explained by a slightly reduced penetration of particles to the periphery of the lung in patients with severe obstructive airways disease. In all cases, however, the aerosol did visualize all ventilated regions. The results indicate that this readily available aerosol technique can be useful for clinical ventilation imaging in multiple views.
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Base de dados:
MEDLINE
Assunto principal:
Embolia Pulmonar
/
Índio
/
Criptônio
/
Pulmão
Tipo de estudo:
Diagnostic_studies
/
Evaluation_studies
Limite:
Adult
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Aged
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Female
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Humans
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Male
/
Middle aged
Idioma:
En
Ano de publicação:
1982
Tipo de documento:
Article