Magnetic resonance imaging detection of aortic and pulmonary artery thickening in the acute stage of Takayasu arteritis. Improvement of clinical and radiologic findings after steroid therapy - Tanigawa, K; Eguchi, K; Kitamura, Y; Kawakami, A; Ida, H; Yamashita, S; Matsunaga, N; Hayashi, K; Nagataki, S (Arthritis Rheum, 1992)