1. Continuous-wave versus range-gated pulsed Doppler power frequency spectrum analysis in the detection of carotid arterial occlusive disease.

Two types of ultrasonic Doppler velocity metering devices currently used in the detection of extracranial carotid artery disease, the continuous-wave (CW) and the range-gated pulsed (RP) Doppler systems, were compared in the present study. Power frequency spectrum analysis (PFSA) was performed on 130 carotid arterial bifurcations with a CW Doppler and 81 car

2. Is Doppler ultrasound useful for evaluating gestational trophoblastic disease?

Doppler ultrasound is a non-invasive method for evaluating vascularization and is widely used in clinical practice. Gestational trophoblastic neoplasia includes a group of highly vascularized malignancies derived from placental cells. This review summarizes data found in the literature regarding the applications of Doppler ultrasound in managing patients wit

Clinics. Publicado em: 2015-12

3. Morfologia duplex Doppler dos principais vasos sanguíneos abdominais em pequenos animais

A ultra-sonografia duplex Doppler é capaz de fornecer informações anatômicas e hemodinâmicas em tempo real. O conhecimento do espectro Doppler normal de cada vaso sanguíneo é importante na sua identificação, pois cada vaso possui um sinal Doppler específico. Reconhecer as alterações de morfologia do espectro somente é possível mediante o conhec

Ciência Rural. Publicado em: 2008-06

4. Evaluations of Repaired Artery Patency in Forearm Wounds Using the Allen Test, Handheld Doppler and Doppler Ultrasonography

Resumo Objetivo O objetivo deste estudo foi avaliar a taxa de perviedade pós-operatória de lesões arteriais do antebraço secundárias a traumatismo penetrante. As lesões foram submetidas a reparo primário e examinadas com o teste de Allen e um dispositivo Doppler portátil; posteriormente, os resultados foram confirmados à ultrassonografia com Dopple

Revista Brasileira de Ortopedia. Publicado em: 2022

5. Correlation between velocity measurements from Doppler echocardiography and from M-mode contrast echocardiography.

The slope of an individual contrast trajectory on M-mode contrast echocardiography represents a physiological variable similar to that measured by Doppler echocardiography: the projection of the intracardiac velocity vector in the direction of the sound beam. To test the hypothesis that M-mode contrast echocardiography slope measurement can yield information

6. The superiority of combined continuous wave Doppler examination over periorbital Doppler for the detection of extracranial carotid disease.

Non-invasive examination of 431 vessels in 333 patients with cerebrovascular disease in all stages was performed in order to compare the reliability of the periorbital Doppler test alone and together with the more difficult insonation of the carotid arteries in the neck (combined Doppler). These findings were compared with those of subsequent arteriography.

7. Revolucionário e ainda assim desconhecido!

O presente artigo consiste numa biografia do físico austríaco Chistian Doppler, criador do famoso efeito que leva o seu nome. Discute-se a recepção dada, em sua época, à sua descoberta, com particular atenção para as críticas que Doppler recebeu.

Revista Brasileira de Ensino de Física. Publicado em: 2007

8. Sensitivity and speed of colour Doppler flow mapping compared with continuous wave Doppler for the detection of ventricular septal defects.

Twenty nine patients (aged from three months to 37 years) with confirmed or suspected ventricular septal defects were studied separately by three examiners who used colour flow mapping and imaging, or continuous wave Doppler and imaging, or a combined reference examination. Colour flow mapping identified 19 of the 25 patients with a ventricular septal defect

9. Doppler echocardiography in the study of patients with mitral disc valve prostheses.

A combination of M mode and Doppler echocardiography was used to study patients with mitral disc valve prostheses. The probe used in these investigations consisted of a circular Doppler crystal mounted around the M mode crystal in the same plane. Because of the strong echoes produced by the prosthesis the transducer (probe) could be angled for optimum Dopple

10. Doppler assessment of pulmonary haemodynamics in chronic hypoxic lung disease.

Various methods of Doppler echocardiography are useful in the analysis of flow dynamics within the heart and the pulmonary circulation in patients with COPD. In addition, to distinguish patients with increased pulmonary artery pressures from those with normal pressures, Doppler techniques provide quantitative methods for estimating pulmonary artery pressures

11. Estudo Doppler com contraste endovenoso em pacientes com suspeita de cancer de prostata

O objetivo deste estudo foi avaliar o papel do agente de contraste ultrasonográfico (Levovist TRADE MARK ), através do estudo Doppler e power Doppler, na detecção de cânceres prostáticos em pacientes com suspeita clínica e/ou laboratorial de câncer prostático. Os critérios de inclusão neste estudo foram pacientes com suspeita clínica e/ou laborat

Publicado em: 2001

12. Comparison of Doppler echocardiographic methods with heart catheterisation in assessing aortic valve area in 100 patients with aortic stenosis.

OBJECTIVE--To examine the practicability and accuracy of Doppler echocardiographic methods in determining aortic valve area. METHODS--Aortic valve areas determined by three methods using Doppler echocardiography (applying the continuity equation and the modified Gorlin formula using data from Doppler echocardiography and right heart catheterisation) were com