Task: Question Answering
Input (English): Question: Acute aortic syndrome includes entities such as aortic dissection, intramural aortic hematoma, and penetrating atherosclerotic ulcer. Regarding the diagnostic and therapeutic considerations of this entity, point out the CORRECT statement: 
 Options:  <1> Currently, in our environment, the diagnosis of this pathology is established routinely by percutaneous arteriography. <2> Computed tomography is not a good imaging technique for its diagnosis. <3> The echocardiographic techniques do not usually provide data of interest in the diagnosis and study of these nosological entities. <4> It is considered a Stanford type A aortic intramural dissection or hematoma when the ascending aorta is affected, regardless of the place of origin of the lesion or its extension. <5> The surgical indication of an aortic dissection is independent of the involvement of the ascending aorta.
Output (English): 4