Intraoperative assessment of arterial repairs can be performed using angiography or ultrasound techniques. Duplex ultrasound is an accurate technique to image and assess the hemodynamics of repaired arteries using color and pulsed Doppler velocity spectra recordings. Procedure-specific interpretation criteria sh...
As peripheral arterial disease progresses, the normal triphasic flow is replaced by biphasic flow due to arterial fibrosis, which reduces the elastic recoil. If the disease worsens or is at the site of severe stenosis or occlusion, the early diastolic flow reversal disappears, resulting in a monop...
Testing requires expertise in abdominal ultrasound imaging and arterial duplex scan interpretation, as well as a fundamental understanding of visceral artery hemodynamics and collateral pathways created as a result of occlusive lesions. Duplex testing can also be utilized to evaluate functional patency ...
With colour duplex sonography, the identification and quantification of arterial stenoses in peripheral arteries had become feasible in reasonable time. Ho... D Neuerburg-Heusler,T Karasch - 《Vasa Zeitschrift Für Gefsskrankheiten》 被引量: 5发表: 1996年 [The assessment of arteriolosclerosis by...
Pulsus parvus and tardus waveforms, characterized by delayed and diminished arterial pulsation, appear distal to the stenotic area in 91% of cases.[21]Pulsus bisferiens, showing 2 prominent systolic peaks with midsystolic retraction, is associated with hypertrophic cardiomyopathy and aortic valvular di...
Arterial duplex ultrasonography provides a convenient non-invasive initial assessment method for these patients [25]. Figure 2 illustrates our management strategy. Figure 2 - Management pathway for patients with reduced ABPI In patients with a reduced ABPI, a history of intolerance of compression or...
In this study, 4 indexes were developed to express the results of a duplex ultrasound penile blood flow study and they were tested in an impotent population comprised of 75 men with arterial disease and 33 men with impotence due to neurogenic or psychogenic causes. A significant difference was ...
Young GR, Sandercock PA, Slattery J, Humphrey PR, Smith ET, Brock L. Observer variation in the interpretation of intra-arterial angiograms and the risk of inappropriate decisions about carotid endarterectomy. J Neurol Neurosurg Psychiatry 1996;60:152-157...
For peripheral arterial testing, duplex testing should be combined with segmental pressure measurements, including the measurement of the ankle-brachial systolic pressure index (ABI) for the diagnosis of peripheral arterial disease (PAD). Interpretation of noninvasive vascular testing requires an ...
abnormal portal vein blood flow away from the liver.[16]Doppler ultrasonography can assess blood flow direction and evaluate the presence of collateral vessels. Doppler indices include portal and splenic venous velocities, flow directions, and resistive/pulsatility indices of the arterial vasculature.[17...