Duplexsonographie der Nierenarterienstenose: Möglichkeiten und Grenzen der Frequenzspektrumanalyse der Segmentarterien im Vergleich zur Angiographie

Autor:	Markus Stuhrmann, Roefke C, Jahnke T, Cramer Bm
Rok vydání:	1998
Předmět:	medicine.medical_specialty medicine.diagnostic_test business.industry Vascular disease Ultrasound Hemodynamics Renal artery stenosis medicine.disease Stenosis medicine.artery Angiography medicine Radiology Nuclear Medicine and imaging Radiology Renal artery business Prospective cohort study
Zdroj:	RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren. 168:258-263
ISSN:	1438-9010 1438-9029
Popis:	PURPOSE The aim of this prospective study was to evaluate the potentials and limits of Doppler waveform analysis of intrarenal vessels in patients with suspected renal artery stenosis. MATERIAL AND METHODS In a three-year study we compared our colour Doppler results of 111 patients with the angiography results. Evaluated parameters were acceleration time (AT), acceleration index (AI) and early systolic peak (ESP). RESULTS The sensitivity of severe stenoses (> or = 70%) was 89%. In moderate stenoses (50-70%) it was possible to increase the sensitivity from 56% to 76% if a comparison with the contralateral side was included. The specificity was 91%. Causes for limited sensitivity and specificity were poor examination conditions, stenoses of accessory renal arteries and moderate stenoses as well as diffuse non-stenosing lesions. CONCLUSION In comparison with angiography, the diagnostic value of Doppler waveform analysis in the detection of renal artery stenoses has specific limitations. In significant stenoses, however, additional valuable haemodynamic information, useful for PTA, can be obtained by this easy and accessible method.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::98d87d28ec927c78b79391f2eba037a6 https://doi.org/10.1055/s-2007-1015122 Zobrazit plný text záznamu