CT measurement of main pulmonary artery diameter
| Autor: | P D Edwards, Richard Coulden, R K Bull |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Adult
Male medicine.medical_specialty Matched Pair Analysis Adolescent Hypertension Pulmonary Matched-Pair Analysis Pulmonary Artery Boundary values Risk Assessment Sensitivity and Specificity Risk Factors medicine.artery medicine Humans Radiology Nuclear Medicine and imaging In patient Respiratory system Child Aged Aged 80 and over business.industry General Medicine Middle Aged Main Pulmonary Artery medicine.anatomical_structure Pulmonary artery Circulatory system Female Radiology Nuclear medicine business Tomography X-Ray Computed Blood vessel |
| Zdroj: | The British journal of radiology. 71(850) |
| ISSN: | 0007-1285 |
| Popis: | The aim of this study was to determine the upper limit of the normal main pulmonary artery diameter using a modern CT system. This was measured at the level of the pulmonary artery bifurcation in 100 normal subjects using unenhanced contiguous 10 mm CT slices viewed at fixed mediastinal window settings (400/20). These normal subjects were then compared with similar unenhanced 10 mm images from 12 patients with proven pulmonary arterial hypertension (mean pulmonary artery pressure > 20 mmHg). The main pulmonary artery diameter in normal subjects was 2.72 cm (SD = 0.3). Main pulmonary artery diameter in patients with pulmonary arterial hypertension was significantly greater (p < 0.01) at 3.47 cm (SD = 0.33). A pulmonary artery diameter of 3.32 cm (main pulmonary artery diameter + 2 SD) had a 58% sensitivity and 95% specificity for the presence of pulmonary arterial hypertension. It is concluded that, using unenhanced axial 10 mm CT sections, the upper limit of normal main pulmonary artery diameter is 3.32 cm. Pulmonary arterial hypertension should be considered in patients with values above this level. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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