Maciej Piechocki, PhD


Doctoral thesis
1984Ultradźwiękowe metody dopplerowskie pomiaru z zaburzonych przepływów krwi 
supervisor -- Prof. Leszek Filipczyński, PhD, DSc, IPPT PAN
395 
Recent publications
1.Powałowski T., Etienne J., Filipczyński L., Nowicki A., Piechocki M., Secomski W., Wleciał A., Barańska M., Ultrasonic gray scale doppler imaging angiography, ARCHIVES OF ACOUSTICS, ISSN: 0137-5075, Vol.9, No.1-2, pp.131-136, 1984
Abstract:

Examination of the carotid artery stenosis is very important in the diag-nosis of cerebrovascular diseases. New possibilities in the diagnosis of stenotic lesions are provided by ultrasonic Doppler angiography. The aim of this paper is to present a Doppler imaging system developed by the authors for the exami¬nation of blood flowing in carotid arteries. The system is based upon a 5 MHz bi-directional c.tv. Doppler flowmeter with a separate output for anterograde and retrograde flows. A special bank of filters converts signals into various levels of the gray-scale display which correspond to the value of the blood flow velocity. The ultrasonic probe is held by the scanning arm. The position of the probe on the skin of the patient is electronically sensed by the position-sensing circuity which causes the bright spot on the image display to move according to the position of the probe. The Doppler image from the artery is stored in a digital memory system. The clinical results obtained by means of this system showed good agreement with X-ray arteriography for obstructions occluding more than 50 per cent of the arterial diameter.

Affiliations:
Powałowski T.-IPPT PAN
Etienne J.-IPPT PAN
Filipczyński L.-IPPT PAN
Nowicki A.-IPPT PAN
Piechocki M.-IPPT PAN
Secomski W.-IPPT PAN
Wleciał A.-other affiliation
Barańska M.-other affiliation

Patents
Filing No./Date
Filing Publication
Autor(s)
Title
Protection Area, Applicant Name
Patent Number
Date of Grant
pdf
277279
1989-01-20
BUP 15/1990
1990-07-23
Marciniak A., Nowicki A., Secomski W., Karłowicz P., Piechocki M., Liwski J.
Ultradźwiękowa głowica sektorowa
PL, Instytut Podstawowych Problemów Techniki PAN
157977
WUP 07/1992
1992-07-31
247801
1984-05-23
-
1985-12-03
Karłowicz P., Nowicki A., Piechocki M., Secomski W.
Ultradźwiękowy przepływomierz dopplerowski do rejestracji maksymalnej prędkości cieczy
PL, Instytut Podstawowych Problemów Techniki PAN
144601
-
1989-04-29