Finding-the-Path: Plain radiographs of chest

Anteroposterior (AP) and lateral plain radiographs of the chest show no abnormality in the pulmonary parenchyma. The cardiomediastinal silhouette is unremarkable. There is a small right pleural effusion (arrow).

Which study do you request next?

• CT of the chest
• Ventilation-perfusion (V/Q) scintigraphy
• Lower extremity vascular ultrasound
• Pulmonary angiogram
• MRI of lower extremity