A bedridden patient experiences acute chest pain which is worsened by breathing.Which imaging techniques could be helpful?

Symptoms of pulmonary embolism (PE) are * Sudden-onset dyspnea * Tachypnea * Chest pain of a "pleuritic" nature (worsened by breathing) * Cough * Hemoptysis More severe cases can include signs such as cyanosis, collapse, and circulatory instability. On physical examination, a pleural rub may be audible by stethoscope over affected areas of the lung. Strain on the right ventricle may be detected as a left parasternal heave, a loud pulmonary component of the second hea sound, raised jugular venous pressure, and more rarely leg swelling. The gold standard for diagnosing pulmonary embolism (PE) is pulmonary angiography. Pulmonary angiography is used less often due to wider acceptance of CT scans, which are non-invasive REF : DAVID SUTTON 7TH ED