摘要:

This article is a preliminary review of the possible clinical applications of electrical impedance tomography (EIT). The applications to, for example, the central nervous, respiratory, cardiovascular and digestive systems are covered. It is concluded that the area of greatest potential application of EIT is monitoring cardiopulmonary function, but that studies on much larger groups of patients than have been carried out hitherto are required to fully assess the potential of EIT as a clinical tool.

ISSN:0309-1902    

DOI:10.3109/03091909309016213

出版商:Taylor&Francis    

年代:1993

数据来源: Taylor

摘要:

We assessed the accuracy and ease of use of the BladderScan (BVI 2000) portable ultrasound-based bladder volume measurement device in a geriatric outpatient population. The Geriatric Continence Clinic nurse and physician each made 73 measurements on 36 subjects. Although the correlation coefficients between the true and ultrasound measurements were highly significant the mean differences were significantly different from zero. We suggest that, rather than considering the correlation coefficient, the accuracy required of the device should be described by a function of estimated versus true bladder volume. This function should vary depending on each particular decision-making process in which the estimate of volume is to be used. This instrument automatically estimates bladder volume once the user has completed the image creation and selection part of the process. The users in this study had difficulties with this imaging process. Possible ways in which the device's automated signal processing and volume calculation algorithms could be improved became evident during this study and are discussed.

ISSN:0309-1902    

DOI:10.3109/03091909309016214

出版商:Taylor&Francis    

年代:1993

数据来源: Taylor

摘要:

A hand-held fully electrically powered and programmable cryoprobe for general-purpose cryosurgery and cryotherapy has been developed. By combining the technologies of thermoelectric cooling and heat pipes, the temperature at the tip of the probe can easily reach -50 to -60°C. It can hold below -40°C when it cools a load of 10 W at the tip. Previous efforts developing cryoprobes made of thermoelectric modules have been hindered by the inherent characteristics of commercially available thermoelectric coolers: low efficiency, sine and inflexible shape and very sensitive to heat intensity and thermal insulation. Matching thermoelectrics with heat pipes uses the advantages of both technologies. In the cryoprobe the heat pipe is used to focus and transport the cooling power of multi-thermoelectric modules. The heat flux for the thermoelectric modules is reduced and their efficiencies are increased. The transport of heat by a heat pipe also allows flexible access to treated spots of patients.

ISSN:0309-1902    

DOI:10.3109/03091909309016215

出版商:Taylor&Francis    

年代:1993

数据来源: Taylor

摘要:

The ideal conservative treatment for lower limb oedema would be one that provided intermittent compression whilst allowing the patient to remain mobile. In this article we describe the development of a pneumatic ambulatory compression device that utilizes the patient's weight applied, during walking, to air cells under the foot to provide compression to the ankle and calf. In volunteer studies this device typically produced a cycle of interface pressure changes from 20 to 45–50 mmHg on the lower calf and 20 to 35–40 mmHg on the upper calf.

ISSN:0309-1902    

DOI:10.3109/03091909309016216

出版商:Taylor&Francis    

年代:1993

数据来源: Taylor

ISSN:0309-1902    

DOI:10.3109/03091909309016217

出版商:Taylor&Francis    

年代:1993

数据来源: Taylor

摘要:

Electrotherapy in RehabilitationEdited by Meryl Roth Gersh F. A. Davis, Philadelphia, 1992. pp. 413.£28.00 ISBN 8036-4025.Universal Precautions: Policies, Procedures, and ResourcesEdited by G. Pugliese, P. Lynch and M. M. Jackson. American Hospital Publishing, Inc., Chicago, 1991, pp. 400. $69.95. ISBN 1 55648 055 5.Biosensors: Theory and ApplicationsBy Donald G. Buerk. Technico Publishing AG, Basel 1993, pp. 232. ISBN 0 87762 975 7. Price: SF187.

ISSN:0309-1902    

DOI:10.3109/03091909309016218

出版商:Taylor&Francis    

年代:1993

数据来源: Taylor

ISSN:0309-1902    

DOI:10.3109/03091909309016219

出版商:Taylor&Francis    

年代:1993

数据来源: Taylor

ISSN:0309-1902    

DOI:10.3109/03091909309016220

出版商:Taylor&Francis    

年代:1993

数据来源: Taylor