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Aetiopathogenesis, clinical picture, laboratorical and functional diagnostic methods of ten patients suffering from Takayasu's arteritis out of 1164 patients suspicious of cerebrovascular insufficiency are described. The combined use of Dopplersonography, ophthalmodynamometry and ophthalmodynamography permit in all cases the assessment of vascular pathology in supraaortic arteries. The specific diagnosis was made in connection which clinical, anamnestical and paraclinical findings. There are some characteristic functional diagnostic results in Takayasu's arteritis. The noninvasive diagnostic methods are useful tools to estimate the progredience of this disease in his chronical course.

With the aid of the complexes of principle signs of the pulseless disease, the cerebrovascular insufficiency and the ischaemic-brachialgiformous symptomatology the different basic diseases, which are to be taken into consideration differential-diagnostically in a large number can clearly be recognized. With the cerebrovascular insufficiency compete intracranial organic processes and reductions of the volume of the cardiac output. In the brachialgiformous ischaemic syndrome further angiopathies, neurovascular syndromes of the shoulder girdle, nervously caused pain in the arm and a series of other very different starting-points must finally be taken into consideration. By means of a good interdisciplinary cooperation a clarification can be achieved also in difficult situations.

The diagnostic possibilities in the syndrome of the aortic arch in the surgery of the outpatient department are described. The importance of the leading symptoms in the anamnesis, the pulse palpation and auscultation, the inspection and the bilateral measurement of the blood pressure is elaborated. It is referred to the value of the simple functional test. Apparative investigation methods which are also used in the outpatient department are mentioned. The exhaustion of all possibilities which are at disposal for diagnosing already the early stages of the syndrome of the aortic arch is regarded as prognostically important in order to prevent irreversible cerebral lesions by a timely induction of necessary therapeutic measures.