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PURPOSE The results of percutaneous transluminal angioplasty (PTA) of the subclavian artery in nonspecific aortoarteritis (Takayasu disease) are analyzed. PATIENTS AND METHODS Twenty-four patients (15 men, nine women; age range, 18-47 years; mean, 37.1 years) with occlusive disease in 26 subclavian arteries, had symptoms due to vertebrobasilar(More)
Parallel cascade controllers are used in chemical processing industries to improve the dynamic performance of a control system in the presence of disturbances. In the present work, a delay compensator has been incorporated in the primary loop of the parallel cascade control system. The secondary controller is designed using the internal model control (IMC)(More)
Our experience in the treatment of stenoses of the infrarenal portion of the abdominal aorta with balloon angioplasty in 27 patients is reported. Clinical findings were lower limb claudication (all patients), impotence (eight patients), and blue-toe syndrome (two patients). The underlying disease was atherosclerosis in 24 patients and nonspecific(More)
AIM To describe the magnetic resonance imaging (MRI) appearances in patients with a clinical history suggestive of vertebral osteomyelitis and discitis who underwent MRI very early in their clinical course. MATERIALS AND METHODS A retrospective review of the database of spinal infections from a spinal microbiological liaison team was performed over a 2(More)
The clinical and radiological features, and outcome of 30 patients including 22 females, with the aneurysmal form of aortoarteritis were analysed. The average age at diagnosis was 27.4 +/- 7.2 years. Features which indicated the diagnosis of aneurysmal aortoarteritis included young age, female sex, characteristic location, associated stenotic lesions and(More)
BACKGROUND Stability is considered the most important parameter before performing any melanocyte transplantation procedure in vitiligo; however, current criteria rely on the history given by the patients. OBJECTIVE This study was undertaken to determine the clinical, biochemical and immunological factors determining stability of disease in patients with(More)
In five patients embolization of large saccular aneurysms involving the popliteal artery, common carotid artery, arch of the aorta, and abdominal aorta was performed with custom-designed spring coils. Surgery was attempted before embolization for the aneurysm involving the popliteal artery. The other aneurysms were considered nonresectable due to their(More)
The coronary angiograms of 1,500 cases performed between 1981 and 1989 were analysed to find out the incidence of Myocardial Bridge (MB) and its significance as regards myocardial ischemia. Sixteen of these (1.06%) were found to have MB. Their ages ranged from 27-70 years (m = 49.2) and male:female ratio was 13:3. Out of 16 patients, 7 (group A) had(More)
A simple method of designing the controllers for a modified form of Smith predictor is proposed for integrating and double integrating processes with time delay. The modified Smith predictor has two controllers, namely, a set point tracking controller and a load disturbance rejection controller for obtaining good set point tracking and load disturbance(More)