Biomedical subjects
Publications and source records attributed to M Bramanti.
A simple, inexpensive and novel method is proposed to acquire information on the motion characteristics of a patient during ambulation, by assuming the earth's magnetic field as reference.
Alveolar hypoventilation is known to occur in myxedema. Reduction of hypercapnic ventilatory drive has not been reported, up to now, in patients with short-term hypothyroidism. Eleven patients with short-term hypothyroidism, before and after L-triiodothyronine (L-T3) replacement therapy, and 10 normal controls were studied. Hypercapnic ventilatory drive was assessed by the evaluation of the relation between the response of ventilation and mean expiratory flow to CO2 rebreathing and by the evaluation of ventilation and mean expiratory flow at a fixed level of carbon dioxide. In patients with short-term hypothyroidism these parameters were reduced as compared with normal controls and returned to normal after L-T3 replacement. We conclude that hypercapnic ventilatory drive is blunted by short-term hypothyroidism and normalizes following replacement therapy.
The use of microwave radiation for biomedical purposes has been increasing in recent years. Among the most important applications are localized hyperthermia, noninvasive diagnosis and monitoring of cardiovascular system parameters and characterization of biological tissues. For all these purposes the design of suitable electromagnetic (e.m.) energy couplers is of fundamental importance. In this paper a new structure is suggested and assessed for a direct contact microwave applicator. The proposed radiating system is obtained using the microstrip transmission lines technique and its principal characteristics are very small sizes and weight, together with good matching and sufficiently defined and small irradiated value.
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A non-invasive system for monitoring chest and abdominal motion is described. The system is based on the use of two microwave interferometers. A linear relationship with tidal volume can be obtained using an isovolume technique for calibration. Although the system is not an improvement on existing equipment, it is simpler and cheaper and well suited to rehabilitation work.