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Regional ventilatio...
Regional ventilation and distribution of emphysema - a quantitative comparison
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- Johansson, Åke, 1950 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för invärtesmedicin,Institute of Internal Medicine
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- Vikgren, Jenny, 1957 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för särskilda specialiteter, Avdelningen för radiologi,Institute of Selected Clinical Sciences, Department of Radiology
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- Moonen, Michaela (author)
- Gothenburg University,Göteborgs universitet,Institutionen för invärtesmedicin,Institute of Internal Medicine
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- Tylén, Ulf, 1938 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för särskilda specialiteter, Avdelningen för radiologi,Institute of Selected Clinical Sciences, Department of Radiology
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- Bake, Björn, 1939 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för invärtesmedicin, Avdelningen för lungmedicin och allergologi,Institute of Internal Medicine, Dept of Respiratory Medicine/Allergology
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(creator_code:org_t)
- 2004
- 2004
- English.
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In: Clin Physiol Funct Imaging. ; 24:1
- Related links:
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https://gup.ub.gu.se...
Abstract
Subject headings
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- The distribution of ventilation and emphysema throughout the lung was compared in 20 emphysematous patients who were candidates for lung volume reduction surgery. Ventilation distribution among 1.6-cm-high stripe regions was obtained in supine position by planar gamma camera scintigraphy after inhalation of technegas(R). Results from nine healthy subjects provided normal stripe count rates. Patient count rates were expressed as the difference from predicted normal stripe count rate (DeltaSVI). Thus, DeltaSVI is a relative index of abnormal ventilation. Emphysema was assessed quantitatively by a density mask method on corresponding slices of high resolution computed tomography (HRCT). The results show that in the majority of patients, there is a highly significant relationship between the degree of stripe hypoventilation and the amount of distribution of emphysema, but in some patients no such relationship is found. We speculate that the distribution of airway obstruction not necessarily follows the distribution of emphysema, which could explain the lack of concordance between ventilation and emphysema distribution in some patients. We conclude that ventilation scintigraphy contains complementary information to lung HRCT.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Lungmedicin och allergi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Respiratory Medicine and Allergy (hsv//eng)
Keyword
- Adult
- Aerosols/diagnostic use/pharmacokinetics
- Humans
- Lung/metabolism/*radiography/*radionuclide imaging
- Male
- Middle Aged
- Pulmonary Emphysema/metabolism/*radiography/*radionuclide imaging
- *Pulmonary Ventilation
- Radiopharmaceuticals/diagnostic use/pharmacokinetics
- Sodium Pertechnetate Tc 99m/*diagnostic use/pharmacokinetics
- Statistics
- Subtraction Technique
- Tissue Distribution
Publication and Content Type
- ref (subject category)
- art (subject category)
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