• In most centers, it has been replaced by duplex sonography for the routine evaluation of venous disease. (medscape.com)
  • Although modern imaging techniques such as color Doppler sonography, helical or multidetector-row CT, and MRI have substantially improved the potential to image Wilms tumors, definitive diagnosis is still based on histology. (medscape.com)
  • The terms Doppler ultrasound and Doppler sonography have been accepted to apply to both pulsed and continuous Doppler systems, despite the different mechanisms by which the velocity is measured. (wikipedia.org)
  • Lower-extremity vascular grafts placed for peripheral vascular disease: Prospective evaluation with duplex Doppler sonography. (galaxyjeevandhara.com)
  • Value of color duplex sonography for evaluation of tibioperoneal arteries in patients with femoropopliteal obstruction: A prospective comparison with anterograde intraarterial digital subtraction angiography. (galaxyjeevandhara.com)
  • Results were compared with those of transcranial color duplex sonography (TCCD), and results of carotid compression tests were the standard of reference for the identification of functional intracranial collaterals. (ajnr.org)
  • We performed MR angiography of the circle of Willis in healthy subjects, and the results were compared with those of transcranial color duplex sonography (TCCD). (ajnr.org)
  • This examination includes assessment of the blood flow rate and vascular tone with the use of a pulse Doppler scanning and color flow Doppler mapping (color Doppler sonography). (vip-clinic.by)
  • The patients were examined after an Informed consent was given by their parents prior to the study, with B mode ultrasound and with color and pulsed Doppler sonography to evaluate the presence of antegrade/retrograde flow within the collecting system, all were examined in supine, prone position during full urinary bladder and after micturation. (scirp.org)
  • The dilated upper moiety showed alternating red and blue color flow signal inside ( Figure 3 ) with both antegrade and retrograde flow with pulsed Doppler sonography suggesting reflux ( Figure 4 ). (scirp.org)
  • Gulfcoast Ultrasound Institute is recognized as a worldwide leader in Vascular Ultrasound continuing medical education covering Carotid Ultrasound, Peripheral Vascular Sonography, and Transcranial Doppler Imaging. (gcus.com)
  • One day after the procedure, approximately 10% of the patients were examined with duplex sonography. (ispub.com)
  • Standardized ultrasound (US) examination, color-coded duplex sonography and CEUS using SonoVue® were performed. (nih.gov)
  • Thrombosis of upper extremity thoracic inlet veins: Diagnosis with duplex Doppler sonography. (ac.ir)
  • The aim of the study was to determine the diagnostic accuracy of the Doppler sonography for differentiation of hepatocellular carcinoma (HCC) from other focal liver lesions by taking histopathology as a gold standard. (scirp.org)
  • After evaluating by Doppler sonography and doing core biopsy, the patients were sent to the Department of Pathology, Mayo Hospital for histopathological examination. (scirp.org)
  • On Doppler sonography 37 cases were positive for hepatocellular carcinoma and 33 cases were negative while 36 cases were positive and 34 negative on histopathology. (scirp.org)
  • 2009) Color Doppler sonography and angioscintigraphy in hepatic Hodgkin's lymphoma. (scirp.org)
  • The aim of this study was to evaluate the use of Color Duplex sonography and whether it 3-mercaptopyruvate sulfurtransferase allows the distinction between Belinostat research buy septocutaneous and musculocutaneous perforators. (mek-signaling.com)
  • Firsching R, Synowitz HJ, Hanebeck J. Practicability of intraoperative microvascular Doppler sonography in aneurysm surgery. (neurohirurgija.com)
  • Importance of angle correction in the measurement of blood flow velocity with transcranial Doppler sonography. (neurohirurgija.com)
  • Angle correction in transcranial Doppler sonography. (neurohirurgija.com)
  • A comparative study with conventional transcranial Doppler sonography. (neurohirurgija.com)
  • Malinova V, von Eckardstein K, Rohde V, Mielke D. Neuronavigated microvascular Doppler sonography for intraoperative monitoring of blood flow velocity changes during aneurysm surgery - a feasible monitoring technique. (neurohirurgija.com)
  • The current scope of point of care ultrasound includes the FAST (focused assessment with sonography for trauma) examination, pulmonary ultrasonography, focused cardiac echocardiography, screening for abdominal aortic aneurysms, and procedural guidance (arterial and venous access, thoracentesis, paracentesis, arthrocentesis, and regional anesthesia). (thoracickey.com)
  • Extra- and intracranial venous flow direction was assessed by colour-coded duplex sonography, and extracranial venous cross-sectional area (VCSA) of the internal jugular and vertebral veins (IJV/VV) was measured in B-mode to assess the five previously proposed CCSVI criteria. (bmj.com)
  • In a study of ultrasound and laboratory findings in Wilms tumor survivors with a solitary kidney, signs of kidney damage were seen in 22 of 53 patients (41.5%) on ultrasonography. (medscape.com)
  • Ultrasonography uses high-frequency sound (ultrasound) waves to produce images of internal organs and other tissues. (msdmanuals.com)
  • Echocardiography and Other Ultrasound Procedures Ultrasonography uses high-frequency (ultrasound) waves bounced off internal structures to produce a moving image. (msdmanuals.com)
  • All modern ultrasound scanners use pulsed Doppler to measure velocity. (wikipedia.org)
  • In the last years, different ioUS modalities have been described: B-mode, Fusion Imaging with pre-operative acquired MRI, Doppler, contrast enhanced ultrasound (CEUS), and elastosonography. (unimi.it)
  • What is a Doppler ultrasound? (medlineplus.gov)
  • A Doppler ultrasound is a type of ultrasound imaging test that uses sound waves to show how well your blood flows through your blood vessels. (medlineplus.gov)
  • A Doppler ultrasound can examine your arteries (blood vessels that carry oxygen-rich blood from your heart and lungs to your body) and veins (blood vessels that carry blood from your body back to your heart and lungs to get more oxygen). (medlineplus.gov)
  • Doppler ultrasound works by bouncing sound waves off red blood cells flowing through your blood vessels. (medlineplus.gov)
  • Doppler ultrasound can check for blood vessel conditions that affect the amount, speed, and direction of blood flow in different parts of your body. (medlineplus.gov)
  • There are different types of Doppler ultrasound tests that can be used to gather different information. (medlineplus.gov)
  • A Doppler ultrasound is part of an echocardiogram, which is a test that shows the size and shape of your heart and how well it's pumping blood. (medlineplus.gov)
  • A Doppler ultrasound can also help diagnose blood vessel tumors and problems with the structure of your blood vessels that you were born with. (medlineplus.gov)
  • During pregnancy, Doppler ultrasound is used if there are concerns about blood flow between a pregnant person and the unborn baby. (medlineplus.gov)
  • Why do I need a Doppler ultrasound? (medlineplus.gov)
  • You may need a Doppler ultrasound if you have symptoms of abnormal blood flow. (medlineplus.gov)
  • An ultrasound of your brain, called a transcranial Doppler ultrasound, can diagnose the cause of a stroke and/or help estimate your risk for having a stroke in the future. (medlineplus.gov)
  • Data were collected on basis of detailed history, clinical examination and color Doppler ultrasound findings. (galaxyjeevandhara.com)
  • Duplex ultrasound of the superficial femoral artery is a better screening tool than ankle-brachial index to identify at risk patients with lower extremity atherosclerosis. (galaxyjeevandhara.com)
  • Comparison of colour Doppler ultrasound and digital subtraction angiography in the diagnosis of lower limb arterial disease. (galaxyjeevandhara.com)
  • 10. Gray C. The Role of Colour Duplex Ultrasound in the Surveillance of Patients Undergoing Endovascular Aneurysm Repair. (galaxyjeevandhara.com)
  • The role of color Doppler ultrasound arterial mapping for decision making in the treatment of patients with lower extremity peripheral arterial disease. (galaxyjeevandhara.com)
  • Results: 9 cases with upper moiety dilation showed complete duplication of the pelvicalyceal systems and ureters and 1 case with dilated upper moiety showed incomplete ureteric duplication in which the diagnosis of Yo-yo reflux was confirmed by color duplex ultrasound in addition to the intravenous pyelography findings. (scirp.org)
  • 10 cases with a dilated upper moiety of duplex renal pelvicalyceal systems were examined with color duplex ultrasonography from December 2015 to August 2016 at a private radiology center using a Sonoace X8 ultrasound machine (Medison, Korea). (scirp.org)
  • Femoral artery pseudoaneurysm is a significant problem in patients undergoing diagnostic catheterization.In the study we present our surgical approach to a giant post cardiac catheterization pseudoaneurysm after unsuccessful Duplex ultrasound-guided compression.Surgical repair of pseudoaneurysms was the treatment of choice. (ispub.com)
  • Color Doppler ultrasound identified a pseudoaneurysm of the right common femoral artery with dimensions of 45x30x50 mm. (ispub.com)
  • Duplex ultrasound-guided compression was performed to our case, achieving a prominent regression in the dimensions of the mass. (ispub.com)
  • The evolution of ultrasound (US) techniques has greatly improved the evaluation of many parameters in dialysis vascular access, which is typically achieved through an arteriovenous fistula (AVF) or graft (AVG). These techniques include grayscale B-mode, color Doppler, power Doppler, spectral Doppler, non-Doppler US flow imaging techniques, contrast-enhanced US, and elastography. (e-ultrasonography.org)
  • Risk of malignancy in nonpalpable thyroid nodules: predictive value of ultrasound and color-Doppler features. (medscidiscovery.com)
  • Doppler ultrasound techniques may elucidate the cause and guide the treatment of many ocular and cerebrovascular syndromes. (entokey.com)
  • The Doppler principle is based on the shift in frequency that occurs when ultrasound waves are reflected off flowing blood cells. (entokey.com)
  • Left: Color ultrasound of internal carotid artery shows high-grade stenosis (arrow). (entokey.com)
  • However, commercial ultrasound equipment did not become available until the 1960s, and those early devices were limited to A-mode (amplitude mode) displays that produced a one-dimensional tissue image and continuous-wave (CW) Doppler for detection of blood flow. (thoracickey.com)
  • 3 Color Doppler capabilities were added to ultrasound systems in the 1980s, and three-dimensional gray-scale imaging was developed in the 1990s. (thoracickey.com)
  • Post-transplant color Doppler ultrasound showed decreased renal parenchymal vascularization and difficulty to find the spectral waveforms with resistive indexes greater than 0.7 in 4 of 5 patients. (acr.org)
  • This narrative review describes the main applications of de la ultrasonografía en ultrasound in anesthesia, ultrasound-guided techniques, and current trends in the perioperative anesthetic management of anestesia the surgical patient. (bvsalud.org)
  • First diagnosed angiographically in the early 1960s, SSS is now most commonly diagnosed during Doppler ultrasound (US) examination of the neck arteries. (baahkast.com)
  • In the diagnosis of deep venous thrombosis (DVT), ultrasonography has been shown to be superior to contrast venography, and it has now replaced venography in this setting. (medscape.com)
  • While color Doppler diagnosis revealed 26 patients as atherosclerosis and 24 patients to be Buerger's disease. (galaxyjeevandhara.com)
  • Conclusion: The presence of antegrade/retrograde flow within the dilated moiety of a duplex kidney during color duplex study in addition to the intravenous pyelography findings can confirm the diagnosis of yo-yo reflux. (scirp.org)
  • The echo Doppler is also essential for the diagnosis of superficial points of pelvic venous leaks supplying lower-limb varicose veins. (phlebolymphology.org)
  • Role of intraoperative microvascular Doppler in the microsurgical management of intracranial aneurysms. (neurohirurgija.com)
  • Right: Doppler recording demonstrates intracranial peak systolic (white arrow) and diastolic (yellow arrow) velocities, and spectral broadening (asterisk) due to turbulent flow distal to the stenosis. (entokey.com)
  • 5-7 In a recent study 5 based on duplex sonographic and venographic assessment of extracranial and intracranial veins of 65 MS patients and 235 controls, Zamboni et al claimed a perfect coincidence of MS and venous stenoses in various locations. (bmj.com)
  • This effective technique of examining cerebral vessels (brachiocephalic arteries) includes transcranial duplex ultrasonography scanning. (vip-clinic.by)
  • That is why the procedure is called transcranial duplex ultrasonographic scanning of cerebral vessels. (vip-clinic.by)
  • Quantitative measurements of blood flow velocity in basal cerebral arteries with transcranial duplex color-flow imaging. (neurohirurgija.com)
  • Conclusions This triple-blinded extra- and transcranial duplex sonographic assessment of cervical and cerebral veins does not provide supportive evidence for the presence of CCSVI in MS patients. (bmj.com)
  • Methods: Bi-directional surgical Doppler with a 20MHz flexible bayonet 1.2mm diameter probe was used for the intraoperative blood flow assessment, with the variable insonation angle on the straight parts of the arteries, and the results were recorded to demonstrate the importance. (neurohirurgija.com)
  • Lepic T, Veljancic D, Jovanikic O, Lepic M, Slankamenac P, Raicevic R. Importance of angle correction in transcranial color-coded duplex insonation of arteries at the base of the brain. (neurohirurgija.com)
  • Steele SR, Martin MJ, Mullenix PS, Azarow KS, Andersen CA. The significance of incidental thyroid abnormalities identified during carotid duplex ultrasonography. (medscidiscovery.com)
  • Meanwhile, spectral Doppler ultrasonography consists of three components: B-mode, Doppler mode, and spectral waveform displayed at the lower half of the image. (wikipedia.org)
  • The combination of a real-time B-mode imaging system with a pulsed Doppler and spectral waveform analyzer-the "duplex" scanner- was first described in 1974. (thoracickey.com)
  • The ability of qualitative assessment of the common femoral Doppler waveform to screen for significant aortoiliac disease. (galaxyjeevandhara.com)
  • Ultrasonography of the heart (echocardiography) is one of. (msdmanuals.com)
  • Echocardiography, Doppler" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings) . (wakehealth.edu)
  • This graph shows the total number of publications written about "Echocardiography, Doppler" by people in this website by year, and whether "Echocardiography, Doppler" was a major or minor topic of these publications. (wakehealth.edu)
  • Below are the most recent publications written about "Echocardiography, Doppler" by people in Profiles. (wakehealth.edu)
  • One case was a female child aged 5 years was presented with localized cyst related to the upper pole of the right kidney The kidney showed duplex pelvicalyceal system and the cyst related to the upper pole showed no arterial or venous flow pattern and seen representing mildly dilated upper moiety of the duplex pelviclayceal system ( Figure 2 ). (scirp.org)
  • Ultrasonography (US) is a valuable tool for preoperative evaluation of the arterial and venous vasculature in the upper extremity [ 1 ]. (e-ultrasonography.org)
  • Doppler ultrasonography revealed that arterial flow was mainly systolic postoperatively. (mek-signaling.com)
  • Because clinical examination does not reliably exclude PAD in most diabetic persons with foot ulceration, evaluate pedal Doppler arterial waveforms, and measure ankle systolic pressure and systolic ankle-brachial index (ABI) or toe systolic pressure and toe-brachial index (TBI). (medscape.com)
  • [ 19 ] On newer machines, the shade of the color may reflect the flow velocity (in the Doppler mode) or the flow volume (in the power Doppler mode). (medscape.com)
  • Power Doppler is a non directional Doppler. (wikipedia.org)
  • Power Doppler. (medlineplus.gov)
  • Aim: The aim of the study was to clinically evaluate patients of chronic lower limb ischemia and correlate the clinical findings with color Doppler study. (galaxyjeevandhara.com)
  • With duplex scanning Doppler flow information is combined with conventional B-mode ultrasonography to both image the vessel anatomically and evaluate blood flow characteristics. (entokey.com)
  • Children presenting with abdominal masses initially undergo ultrasonography scanning, usually in combination with chest radiography. (medscape.com)
  • Color-flow duplex imaging uses the Doppler information to color code the 2-dimensional sonogram. (medscape.com)
  • Doppler ultrasonography consists of two components: brightness mode (B-mode) showing anatomy of the organs, and Doppler mode (showing blood flow) superimposed on the B-mode. (wikipedia.org)
  • Colour Doppler shows the direction of the blood flow in red or blue (either towards or away from the transducer). (wikipedia.org)
  • Meanwhile, spectral Doppler not only shows the direction of blood flow, it also shows the phases (pulsatility) and acceleration of the blood flow. (wikipedia.org)
  • In spectral Doppler, the y-axis shows the direction and velocity of the flow. (wikipedia.org)
  • The colors show the speed and direction of blood flow. (medlineplus.gov)
  • It can show much smaller blood vessels and slower blood flow than standard color Doppler. (medlineplus.gov)
  • A "continuous wave" Doppler can record very fast blood flow, but it can't show the exact location in the blood vessel. (medlineplus.gov)
  • Chronic critical limb ischemia is defined not only by the clinical presentation but also by an objective measurement of impaired blood flow using radiological investigations like color Doppler. (galaxyjeevandhara.com)
  • If it is required to perform a transcranial examination of cerebral vessels, this should be accompanied by brachiocephalic artery ultrasonography, that is, the examinations should be performed successively during the same day since abnormal changes of extracranial vessels often have a significant effect on the blood flow characteristics of transcranial vessels. (vip-clinic.by)
  • 8 cases showed no color flow within the dilated pelvicalyceal system by color duplex US ( Figure 1 ) and one case showed color changes representing both antegrade and retrograde weak flow at the dilated upper moiety suggesting of high grade reflux. (scirp.org)
  • Introduction: The insonation angle consideration is important in the Doppler-sonographic evaluation of blood flow velocities and volume, however, the concept is rarely applied to the intraoperatively used micro-Doppler. (neurohirurgija.com)
  • Measurement of intracardiac blood flow using an M-mode and/or two-dimensional (2-D) echocardiogram while simultaneously recording the spectrum of the audible Doppler signal (e.g., velocity, direction, amplitude, intensity, timing) reflected from the moving column of red blood cells. (wakehealth.edu)
  • Conclusion Our study demonstrated that NVAFV, as estimated by colour duplex ultrasonography, was associated with the incidence of PCI and subsequent ischaemic events and that a high-risk population could be identified for further posterior circulation revascularisation. (bmj.com)
  • However, one study of children with acute lymphoblastic leukemia demonstrated that ultrasonography was insensitive for DVT in the superior vena cava, subclavian veins, or brachiocephalic veins. (medscape.com)
  • Methodology: 10 cases with a dilated upper moiety of duplex renal pelvicalyceal system were examined with color duplex ultrasonography. (scirp.org)
  • In vessels with thrombosis, Doppler signals are absent, and the lumen cannot be compressed with direct pressure. (medscape.com)
  • Angiographic and Doppler identification of perforating vessels may be helpful but is not critical to the success of the flap. (medscape.com)
  • Hemodynamics and changes after STA-MCA anastomosis in moyamoya disease and atherosclerotic cerebrovascular disease measured by micro-Doppler ultrasonography. (neurohirurgija.com)
  • Doppler ultrasonography is medical ultrasonography that employs the Doppler effect to perform imaging of the movement of tissues and body fluids (usually blood), and their relative velocity to the probe. (wikipedia.org)
  • The major advantage of pulsed wave Doppler (PW Doppler) over continuous wave (CW Doppler) is that distance information is obtained (time between transmitted and received pulses multiplied by sound velocity equals distance) and gain correction is applied. (wikipedia.org)
  • Based on the gathered data, special indexes are estimated, and the ultrasonography specialist makes a conclusion on whether there is any pathology and compiles a report. (vip-clinic.by)
  • Ultrasonography is effectively used to image internal organs in the abdomen, pelvis, and chest. (msdmanuals.com)
  • However, because sound waves are blocked by gas (for example, in the lungs or intestine) and by bone, ultrasonography of internal organs requires special skills. (msdmanuals.com)
  • LEAG: study conception, de datos PubMed y Cochrane, se incluyeron artículos originales, estudios aleatorizados y de revisión, en español y en inglés, manuscript design, publicados entre 2017-2021. (bvsalud.org)
  • The disadvantage of pulsed Doppler is that the measurements can suffer from aliasing. (wikipedia.org)
  • This test uses a computer to change sound wave measurements into different colors. (medlineplus.gov)