text: The current gold standard for diagnosing spontaneous coronary artery dissection  (SCAD) is coronary angiography, as it is widely available and the first-line imaging modality for patients presenting with the acute coronary syndrome.  The predominant angiographic feature of SCAD consists of diffuse smooth narrowing of varying severity involving mid-to-distal coronary segments, secondary to compression of the true lumen and/or expansion of the false lumen by the development of an intramural hematoma.  The typical appearance of extraluminal contrast staining, multiple radiolucent lumens, spiral dissection, or intraluminal filling defects is less commonly observed.  Other angiographic findings associated with SCAD include coronary tortuosity, myocardial bridging, and coronary fibromuscular dysplasia.
option_0: Spontaneous coronary artery dissection angiography
option_1: Spontaneous coronary artery dissection echocardiography
option_2: Aortic dissection coronary angiography
option_3: Spontaneous coronary artery dissection physical examination
option_4: Coronary angiography dissection
option_5: Spontaneous coronary artery dissection electrocardiogram
option_6: Aortic dissection electrocardiogram
option_7: Spontaneous coronary artery dissection diagnostic approach