摘要:

In spite of many clinical and experimental applications, the technique of transcranial magnetic stimulation still presents obscure aspects. This especially concerns safety parameters and the exact characterization of the current induced by a single magnetic pulse. The model proposed consists of an equivalent electric network derived by Maxwell's equations and applied to discretized magnetic resonance imaging of a normal subject. This model allows accurate prediction of current distribution, charge per phase and dissipated energy.

ISSN:0309-1902    

DOI:10.3109/03091909209030218

出版商:Taylor&Francis    

年代:1992

数据来源: Taylor

摘要:

Cardiac cycle phase uncertainty causes a small error in indirect estimation of arterial blood pressure by sphygmomanometry. A simple analysis yields a statistical description of the error and a rule for its reduction: correct bias by adding to the systolic estimate and subtracting from the diastolic estimate one-half of the per-cardiac-cycle cuff deflation decrement. If several measurements are taken, the least-square estimate is approximately the arithmetic mean of the greatest and least of the bias corrected estimates.

ISSN:0309-1902    

DOI:10.3109/03091909209030219

出版商:Taylor&Francis    

年代:1992

数据来源: Taylor

摘要:

The Oxford Optronix MPM 3S is a new microvascular perfusion monitor which is promoted as a device for use in the operating theatre. It uses a semiconductor laser diode and applies the Doppler principle to derive a semi-quantitative estimation of microvascular flow. We assessed this instrument with eight healthy volunteers who each performed eight different orlhostalic arm manoeuvres while forearm skin blood flow was monitored. The different manoeuvres caused statistically significant changes in the instrument's reading which generally were consistent with expected changes in blood flow. The monitor also was assessed in the theatre environment with four anaesthetized patients. It proved easy to use, and was not subject to electrical interference from other equipment including short-wave diathermy. The major practical limitation of the technique is the semi-quantitative nature of the measurement. The instrument appears to have potential clinical uses in plastic and vascular surgery.

ISSN:0309-1902    

DOI:10.3109/03091909209030220

出版商:Taylor&Francis    

年代:1992

数据来源: Taylor

摘要:

A proposed new electrode for measurement of foetal auditory brain stem response (ABR) is presented, the structure of which resembles a syringe needle. It can be placed subdermally in the head of the guinea pig foetus through the wall of the maternal abdomen. In the anterior end of the electrode a special device similar to a hook is situated. The device may be controlled from outside the maternal abdomen. In comparison with the placement of electrodes through the surgical incision, its placement is simple and injury to tissue is relatively small. It is not only firmly fixed in the subcutaneous tissue of the foetus to satisfy the need for the measurement of foetal ABR, but is easily removed from the foetus. To our knowledge no other similar electrode has been reported.

ISSN:0309-1902    

DOI:10.3109/03091909209030221

出版商:Taylor&Francis    

年代:1992

数据来源: Taylor

摘要:

Green Pastures Hospital is a specialist leprosy hospital in Pokhara, Nepal. As part of its service it offers a range of appliances aimed to assist in the rehabilitation of patients. This paper outlines the different orthoses and prostheses made at the Orthopaedic Appliances Centre in the hospital, their various indications and some of the benefits and problems associated with their use. Specific reference is made to the requirements related to local conditions and customs. The terrain, communications, facilities and materials available in Nepal make the work of the few rehabilitation engineers in the country somewhat different from that of those in the West. Some of these differences are described, drawing out contrasts in technical requirements of appliances and in organizational structures in the field of rehabilitation in the UK and Nepal.

ISSN:0309-1902    

DOI:10.3109/03091909209030222

出版商:Taylor&Francis    

年代:1992

数据来源: Taylor

ISSN:0309-1902    

DOI:10.3109/03091909209030223

出版商:Taylor&Francis    

年代:1992

数据来源: Taylor

ISSN:0309-1902    

DOI:10.3109/03091909209030224

出版商:Taylor&Francis    

年代:1992

数据来源: Taylor

摘要:

Facial Flaps-Biomechanics and Regional ApplicationBy I. M. Dzubow. Appleton&Lange, Hemel Hempstead. Pp. 166. 1990. US96131.10. ISBN 0-8385-2523-7.Infectious Waste ManagementBy F. L. Cross, H. E. Hesketh and P. K. Rykowski. Technomic Publishing Co. Basel, Switzerland. Pp. 158. 1990. SFr. 99. ISBN 87762-751-7.

ISSN:0309-1902    

DOI:10.3109/03091909209030225

出版商:Taylor&Francis    

年代:1992

数据来源: Taylor

ISSN:0309-1902    

DOI:10.3109/03091909209030226

出版商:Taylor&Francis    

年代:1992

数据来源: Taylor

ISSN:0309-1902    

DOI:10.3109/03091909209030227

出版商:Taylor&Francis    

年代:1992

数据来源: Taylor