Meanings of initial chest in English

The initial chest computed tomography (CT) showed the 7th left intercostal lung herniation.

The initial chest x-ray showed small bilateral pleural effusions, a normal cardiac silhouette, no infiltrates, and no interstitial edema.

The 'positive conversion group' was defined as patients whose initial chest radiographs were negative but were positive for pneumonia during follow-up.

Conclusion: Less than half of pediatric blunt trauma patients with pneumothoraces visualized on abdominal CT scan had these pneumothoraces identified on initial chest radiograph.