Results 251 to 260 of about 18,838 (301)

Three-dimensional colour doppler imaging

Ultrasound in Medicine & Biology, 1993
We have developed a system to acquire in vivo three-dimensional (3D) colour velocity images of peripheral vasculature. A clinical ultrasound system was modified by mounting the transducer on a motor-driven translation stage, allowing planar ultrasound images to be acquired along a 37 mm long stroke.
P A, Picot, D W, Rickey, R, Mitchell, R N, Rankin, A, Fenster   +4 more
openaire   +2 more sources

Colour doppler velocity imaging of the myocardium

Ultrasound in Medicine & Biology, 1992
A technique has been developed for producing images of the velocity of tissue motion within the myocardium. It has been demonstrated that Colour Flow Doppler imagers can be operated to depict the velocities within the myocardium rather than moving blood in the cardiac chambers. The technique exhibits the normal advantages of diagnostic ultrasound, i.e.,
W N, McDicken, G R, Sutherland, C M, Moran, L N, Gordon   +3 more
openaire   +2 more sources

The use of colour Doppler in fetal echocardiography

International Journal of Cardiology, 1990
Doppler colour flow mapping provides a non-invasive method for studying patterns of blood flow in the cardiovascular system. We undertook a prospective study using this technique in order to document normal and abnormal patterns in the human fetus. A group of 50 consecutive normal fetuses were examined with colour flow mapping.
G K, Sharland, S K, Chita, L D, Allan
openaire   +2 more sources

Power Doppler: An advance over colour Doppler for transcranial imaging?

Ultrasound in Medicine & Biology, 1996
The aim of this study is to compare the ability of mean frequency-based colour Doppler (CD) and power Doppler (PD) to identify the basal cerebral arteries in normal subjects. Fifty volunteers were recruited into the study. The temporal acoustic window was used to image the basal cerebral arteries bilaterally. The number of positively identified vessels
Kenton, AR, Martin, PJ, Evans, DH
openaire   +3 more sources

Colour and Power Doppler

1998
Taking B-mode findings as a starting point, this book provides details of a more far-reaching, functionally oriented diagnostic procedure, which takes advantage of 2nd harmonic imaging and the use of echo enhancers. The images presented and the knowledge derived from them are the result of an intensive two-year theoretic-methodic and practical ...
Wolfram Wermke, Bernhard Gaßmann
openaire   +1 more source

Principles of Colour Doppler

1995
Colour Doppler was originally developed in the mid-1980s, primarily as a technique for cardiac investigation [12]. Since then its uses have expanded considerably and cover almost every aspect of the circulation. This expansion is directly related to the fact that colour Doppler represents the most comprehensive form of ultrasonic imaging currently ...
T. Loupas, R. W. Gill
openaire   +1 more source

Echo-Colour Doppler Ultrasonography in the Diagnosis of Varicocele

International Urology and Nephrology, 1999
The relationship between varicocele and infertility has long been defined. About a third of the male patients undergoing evaluation for infertility present with a varicocele. Sixty male patients between 17 and 35 years of age (mean 25.6) were examined with a colour-doppler flow imaging system.
S, Resim, M, Cek, A, Fazlioğlu, T, Caşkurlu, G, Gürbüz, G, Sevin   +5 more
openaire   +2 more sources

Ultrasound and colour Doppler in infantile subglottic haemangioma

Pediatric Radiology, 2011
Subglottic haemangioma causes progressive and life-threatening stridor, typically manifesting at age 2-3 months. Standard diagnosis is by laryngoscopy. Larynx sonography is rarely used but allows assessment of the presence and extension of a mass that impinges on the subglottic airway.
Leo, Rossler, T, Rothoeft, N, Teig, C, Koerner-Rettberg, T, Deitmer, C H L, Rieger, E, Hamelmann   +6 more
openaire   +2 more sources

Transcranial Colour Doppler Ultrasonography

Rivista di Neuroradiologia, 2001
Transcranial colour Doppler ultrasonography (TCCD), being a non-invasive method is an invaluable source of information on cerebral haemodynamics. It is the blood flow disturbances that often lead to irreversible ischemic lesions, which can then be detected a posteriori with various imaging techniques.
openaire   +2 more sources

Validity of continuous wave Doppler and colour Doppler in the assessment of aortic regurgitation

European Heart Journal, 1994
Continuous wave Doppler, colour Doppler, and their combined use were compared for their validity in the semiquantitative evaluation of aortic regurgitation in 80 angiographically proven cases. The diastolic decay slope, as measured from the continuous wave Doppler signal of the aortic regurgitation, correlated well with angiographic data (r = 0.82) and,
U M, Wilkenshoff, I, Kruck, D, Gast, R, Schröder   +3 more
openaire   +2 more sources