ISSN:0309-1902    

DOI:10.3109/03091907809161804

出版商:Taylor&Francis    

年代:1978

数据来源: Taylor

摘要:

The linear and nonlinear operations of a biological system can be represented by a set of functions called Wiener kernels. This type of analysis is becoming increasingly important in the field of biological systems analysis. This paper reviews the theoretical and practical aspects of testing a biological system with white-noise and provides a guide for interpreting Wiener kernels which result from such studies. A study of the human electroretinogram is presented as an example.

ISSN:0309-1902    

DOI:10.3109/03091907809161805

出版商:Taylor&Francis    

年代:1978

数据来源: Taylor

摘要:

The author describes the development of a digital scan converter system which accepts ultrasonic B-scans in“oscilloscope”format and displays them in video format. The system involves the use of a microprocesor, the funciton of which is outlined in the paper. A brief comparison with a system employing a scan converter tube is given.

ISSN:0309-1902    

DOI:10.3109/03091907809161806

出版商:Taylor&Francis    

年代:1978

数据来源: Taylor

摘要:

There has been much discussion on the distortion of intracardiac pressure waveforms measured by catheter methods. Tip transducers, which can eliminate this waveform distortion, have several problems. There are manufacturing difficulties with the mechano-electric transducing element. The devices also do not remain stable over variations in temperature and with long term clinical use. Safety problems may also be experienced due to the direct connection between external electronic devices and the heart. In order to overcome these difficulties, the application of fibre optics to the measurement of intracardiac pressure has been proposed. In this paper, the design, construction, and evaluation of a side-hole optic catheter, intended for intracardiac pressure measurement, is described.

ISSN:0309-1902    

DOI:10.3109/03091907809161807

出版商:Taylor&Francis    

年代:1978

数据来源: Taylor

ISSN:0309-1902    

DOI:10.3109/03091907809161808

出版商:Taylor&Francis    

年代:1978

数据来源: Taylor

ISSN:0309-1902    

DOI:10.3109/03091907809161809

出版商:Taylor&Francis    

年代:1978

数据来源: Taylor

摘要:

Measurement of foetal breathing movements is becoming more common as a means of monitoring processes occurring in the human foetus. Conventional time-period analysis of breathing movements is prone to error owing to their complexity, and it is laborious lo decipher tiny frequency pattern. The described apparatus has been designed to give an on-line visual indication of the instantaneous frequency of foetal breathing movements when measured by a time-distance recorder connected to an echoscope. It is affected insignificantly by spurious signals, and can be built cheaply with easily-available components. Practical trials suggest that frequency analysis by this device can be of value for examining episodes of continuous breathing movements in the foetus.

ISSN:0309-1902    

DOI:10.3109/03091907809161810

出版商:Taylor&Francis    

年代:1978

数据来源: Taylor

ISSN:0309-1902    

DOI:10.3109/03091907809161811

出版商:Taylor&Francis    

年代:1978

数据来源: Taylor

ISSN:0309-1902    

DOI:10.3109/03091907809161813

出版商:Taylor&Francis    

年代:1978

数据来源: Taylor

摘要:

I.E.E. Medical Electronics Monographs 23–27.Edited by D. W. Hill and B. W. Watson. Published by Peter Peregrinus Ltd.£.10.90,£12.75 Overseas (excluding the Americas).Breast Carcinoma. The Radiologists Expanded Role.Edited by Wende Westinghouse Lagan. pp. xv + 378. 1978 John Wiley&Sons. Chichester.£22.55.LaboratoryH. W. K. Acheson, General Editor (Kluwer Publishing Ltd., London), pp. 550 plus supplements.£12.55 for first two installments,£6.00 for first yeark up-dares.

ISSN:0309-1902    

DOI:10.3109/03091907809161814

出版商:Taylor&Francis    

年代:1978

数据来源: Taylor