نتایج جستجو برای: conventional ultrasound
تعداد نتایج: 363343 فیلتر نتایج به سال:
Ultrasonography is non-invasive and can give useful clues in the diagnosis of cervical lymphadenopathy, However, differential diagnosis is difficult in some situations even combined with color Doppler imaging. The present study was conducted to evaluate the clinical value of real time elastography in patients with unexplained cervical lymphadenopathy using a quantitative method. From May 2011 t...
Current state-of-the-art medical ultrasound scanners can depict structure and function, e.g. images of tissue and blood flow, with exceptional quality. However, the systems are large and relatively expensive. The clinical value and widespread acceptance of ultrasound as a diagnostic imaging modality opened an opportunity for Teratech Corporation to expand its technology by creating the TerasonT...
Although ultrasound, computed tomography, magnetic resonance imaging and nuclear medicine are digital, they have been displayed in analogue format in the form of films. Other modalities like digital radiography units and scanning of conventional films (computed radiography) are accepted technologies with resolution similar to the conventional film/screen. This advancement in technology is criti...
Conventional radiographs used for the management of endodontic problems yield limited information because of the two-dimensional nature of images produced, geometric distortion and anatomical noise. This newer review paper seeks to clarify three-dimensional imaging techniques that have been suggested as adjuncts to conventional radiographs. These include tuned aperture computed tomography, magn...
Embedded Supervisory Control and Output Reporting for the Oscillating Ultrasonic Temperature Sensors
Ultrasonic temperature sensors can potentially outperform conventional sensors because they are capable of very fast sensing across the complete ultrasound pathway, whilst conventional sensors only sense temperature at a single point and have substantial thermal inertia. We report recent developments in electronic instrumentation for oscillating ultrasonic temperature sensors with the aim of ac...
Ultrasound current source density imaging (UCSDI) potentially transforms conventional electrical mapping of excitable organs, such as the brain and heart. For this study, we demonstrate volume imaging of a time-varying current field by scanning a focused ultrasound beam and detecting the acoustoelectric (AE) interaction signal. A pair of electrodes produced an alternating current distribution i...
Alternatives to heat treatments for food sanitization are gaining significance due to the increased consumer demand for novel methods that have less deleterious effects on food quality. Ultrasound is an emerging and promising food processing technology to replace conventional methods. Ultrasound has a strong antimicrobial capacity against a spectrum of microorganisms and has been considered as ...
Introduction: Tracking muscle movement can be very useful in diagnosis and rehabilitation of patients with neuromuscular disorders. Doppler ultrasound is well suited for analysis of musculoskeletal movement, but conventional ultrasound systems are bulky and not suitable for monitoring patients during ambulatory gait. A wireless Doppler ultrasound system can allow for direct measurement of muscu...
CONTEXT Contrast enhanced ultrasound (CEUS) has been established for detection and characterisation of liver tumours and differential diagnosis of solid pancreatic lesions. The role of transabdominal CEUS in cystic pancreatic disease is less obvious. OBJECTIVE We prospectively evaluated CEUS for characterization of undetermined cystic pancreatic lesions with respect to the differential diagno...
0929-6441 a 2012, Elsevier Taiwan LL http://dx.doi.org/10.1016/j.jmu.2012 Fetal growth restriction (FGR), previously known as intrauterine growth restriction, remains one of the main challenges in maternity care. Three-dimensional ultrasound (3DUS) has the potential to provide improved visualization of the fetal anatomic morphology compared with conventional two-dimensional ultrasound imaging. ...
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