ISSN: 1300-0292
İndekslendiği Dizinler: SCIENCE CITATION INDEX EXPANDED
CINAHL, Index Copernicus,
Chemical Abstracts (CA),
Excerpta Medica / EMBASE
Dil: Türkçe, İngilizce
İçerik: Orijinal Araştırma, Derleme, Editöre Mektup, Olgu Sunumu, Tıp Eğitimi, Tıbbi Kitap İncelemeleri
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ORIGINAL RESEARCH ARTICLES |
Expiratory High-resolution Computed Tomography For Diagnosisof Pulmonary Emphysema
Şehnaz DURMUŞ*, Lale DAMGACI*, Serpil ARIKAN**, Selda YILDIZ***, Enis YÜKSEL*
* Dr., Ankara Numune Eğitim ve Araştırma Hastanesi Radyoloji Bölümü,
** Dr., Ankara Numune Eğitim ve Araştırma Hastanesi Göğüs Hastalıkları Kliniği,
***Dr., Türkiye Yüksek İhtisas Hastanesi Radyoloji Bölümü, ANKARA
Purpose: We aimed to determine the role of expiratory highresolution computed tomography findings for the diagnosis of pulmonary emphysema. Materials and Methods: On the basis of the clinical information thirty five patients with emphysema and 10 healthy persons underwent inspiratory and expiratory highresolution CT scans at three levels after pulmonary function tests. We calculated the average ratio of CT numbers of the lung fields at full inspiration and expiration for three levels (E/I). The percentage of pixels in the range –900 to –1024 HU was determined for each subject at full inspiration and expiration for each level (expiratory and inspiratory pixel index). The acquired values were then correlated with the results of the pulmonary function tests. Results: Although there was no valuable difference for mean inspiratory density, we found significant difference for mean expiratory density and expiratory pixel index values between control group and emphysema patients. The mean lung density difference between full inspiration and expiration was higher in the control group comparing with the emphysema patients. Expiratory pixel index and E/I ratio showed strong correlation with FEV1(r=-0.518; p<0.001), (r=-0.528; p<0.001) and FEV1/FVC (r=-0.487; p<0.01), ( r= -0.498 p<0.01). Compared with the inspiratory pixel index, expiratory pixel index showed higher correlation with FEV1 and FEV1/FEC.Conclusion: We concluded that expiratory HRCT technique is more sensitive than inspiratory HRCT for the diagnosis of emphysema as it provides more information about the presence and severity of the disease.Keywords: Emphysema, Lungs, HRCTTurkiye Klinikleri J Med Sci 2002, 22:162-167
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