Hello Ms. Soto, how many times has the vertigo occurred? How long does it last? If the heart MRI is negative, the symptoms may be Meniere's disease, only a MRI with angiography of the innter ear can confirm the diagnosis. Vestibular migraine can not be excluded, and if the treatment with sibelium is effective, it may be vestibular migraine. Dizziness involves multiple subjects, and neurology and orthopedics need o look at the exclusion of related diseases.