Doppler<unk>  may be valuable in assessing the site and nature of the obstruction in superior vena cava syndrome. Venous patency and the presence of thrombi can also be assessed by using contrast and rapid scanning techniques.
Superior vena cava syndrome ultrasound
Superior vena cava syndrome CT
Superior vena cava syndrome physical examination
Superior vena cava syndrome MRI
Hemoptysis CT scan
Pulmonary embolism echocardiography
Pulmonary embolism MRI
Pulmonary embolism compression ultrasonography