<unk>  is helpful in diagnosis causes of<unk> , when the cause is unknown . It is not the first choice, but in children to avoid ionizing radiation,<unk>  is preferred. It is also helpful in patients with heavy and/or recurrent<unk> .
Epistaxis MRI
Boerhaave syndrome CT
Ogilvie syndrome CT
Mallory-Weiss syndrome CT
Lower gastrointestinal bleeding CT scan
Upper gastrointestinal bleeding CT scan
Linitis plastica upper GI endoscopy
Syncope CT