Subject:
All Disciplines Arts & Humanities Biology & Life Sciences Business & Economics Chemistry & Materials Science Computer Science & Mathematics Engineering Environmental & Earth Sciences Medicine & Pharmacology Physical Sciences Public Health & Healthcare Social Sciences
Sort:
Hottest Latest Alphabetical (A-Z) Alphabetical (Z-A)
Type:
All Topic Review Biography
Topic Review
Ultrasound Technologies in Giant Cell Arteritis Diagnosis
Giant cell arteritis (GCA) is a primary autoimmune vasculitis that specifically affects medium-sized extracranial arteries, like superficial temporal arteries (TAs). The most important data to be considered for the ultrasound (US) diagnosis of temporal arteritis are stenosis, acute occlusions and “dark halo” sign, which represent the edema of the vascular wall. The vessel wall thickening of large vessels in GCA can be recognized by the US, which has high sensitivity and is facile to use. Ocular complications of GCA are common and consist especially of anterior arterial ischemic optic neuropathies or central retinal artery occlusion with sudden, painless, and sharp loss of vision in the affected eye. Color Doppler imaging of the orbital vessels (showing low-end diastolic velocities and a high resistance index) is essential to quickly differentiate the mechanism of ocular involvement (arteritic versus non-arteritic), since the characteristics of TAs on US do not correspond with ocular involvement on GCA. GCA should be cured immediately with systemic corticosteroids to avoid further visual loss of the eyes. 
  • 665
  • 30 Jan 2022
Topic Review
Ultrasound of Small Bowel Obstruction
Ultrasound is an excellent initial imaging modality for assisting physicians in the rapid and accurate diagnosis of small bowel occlusion.
  • 1.3K
  • 22 Apr 2021
Topic Review
Ultrasound in Telemedicine
The term telemedicine was to describe the practice of delivering health care services through the use of information and communications technology, whereby geographic distance is not as constraining, as in the case of traditional medical practice. Telemedicine is not only used to exchange valid information for the diagnosis, treatment, and prevention of disease and injuries and research and evaluation, but also for the continuing the education of healthcare providers to advance individual and community health.
  • 612
  • 10 Feb 2022
Topic Review
Ultrasound in Senescent Mice and Alzheimer’s Mouse Models
Ultrasound is routinely used for a wide range of diagnostic imaging applications. However, given that ultrasound can operate over a wide range of parameters that can all be modulated, its applicability extends far beyond the bioimaging field. In fact, the modality has emerged as a hybrid technology that effectively assists drug delivery by transiently opening the blood–brain barrier (BBB) when combined with intravenously injected microbubbles, and facilitates neuromodulation. Studies in aged mice contributed to an insight into how low-intensity ultrasound brings about its neuromodulatory effects, including increased synaptic plasticity and improved cognitive functions, with a potential role for neurogenesis and the modulation of NMDA receptor-mediated neuronal signalling. The currently available ultrasound approaches and how studies in senescent mice are relevant for AD and can accelerate the application of low-intensity ultrasound in the clinic are discussed.
  • 287
  • 22 Jun 2022
Topic Review
Ultrasound in Sarcopenia
Sarcopenia is a progressive, systemic musculoskeletal disorder associated with an increased risk of adverse events such as falls and fractures, mobility disorders, cardiac and respiratory disease, cognitive impairment, institutionalization, and death. Physical disability and impaired ability to perform activities of daily living contribute to reducing both patient quality of life and functional independence, adding to the necessity of long-term care services for the patient. Considering this evidence, it would seem clear that early diagnosis of sarcopenia and care optimization would also reduce the economic impact on the health care system and individual social-economic burdens.
  • 622
  • 19 Apr 2022
Topic Review
Ultrasound in Medial Epicondylalgia and Medial Elbow Pain
Medial epicondylalgia (ME), commonly known as “the golfer’s elbow”, typically develops in individuals who perform repetitive forearm movements and weight-bearing activities. It accounts for up to 20% of all epicondylitis cases and is most prevalent in particular sports and occupations.
  • 920
  • 18 Aug 2022
Topic Review
Ultrasound in Imaging Diagnosis of Hepatocellular Carcinoma
Hepatocellular carcinoma (HCC) accounts for a great majority of liver cancer diagnoses and deaths. Imaging plays, therefore, a crucial role in the surveillance of patients at risk, the detection and diagnosis of HCC nodules, as well as in the follow-up post-treatment. The unique imaging characteristics of HCC lesions, deriving mainly from the assessment of their vascularity on contrast-enhanced computed tomography (CT), magnetic resonance (MR) or contrast-enhanced ultrasound (CEUS), allow for a more accurate, noninvasive diagnosis and staging.
  • 502
  • 21 Feb 2023
Topic Review
Ultrasound in Food Technology
Ultrasound is composed of mechanical sound waves that originate from molecular movements that oscillate in a propagation medium. The waves have a very high frequency, approximately 20 kHz, are divided into two categories (i.e. low intensity waves and high intensity waves) and cannot be perceived by the human ear. Ultrasound is commonly associated with the biomedical field.
  • 790
  • 07 Jul 2021
Topic Review
Ultrasound Imaging-Based Methods for Assessing Biological Maturity
Bone maturity is an indicator for estimating the biological maturity of an individual. During adolescence, individuals show heterogeneous growth rates, and thus, differences in biological maturity should be considered in talent identification and development. Radiography of the left hand and wrist is considered the gold standard of biological maturity estimation. The use of ultrasound imaging (US) may be advantageous; however, its validity and reliability are under discussion.
  • 399
  • 06 Jan 2023
Topic Review
Ultrasound Imaging in Dentistry
Ultrasound Imaging, in addition to providing useful indications for diagnosis, can also be used with greater certainty as regards patient follow-up, being repeated at relatively short distances, without causing biological damage. Differently than X-rays, sound waves can be represented as a mechanical longitudinal wave, which can manifest as particle displacement or pressure alterations. 
  • 941
  • 16 Nov 2021
  • Page
  • of
  • 5499
Featured Entry Collections
>>

Featured Books

>>
Encyclopedia of Social Sciences
Encyclopedia of COVID-19
Encyclopedia of Fungi
Encyclopedia of Digital Society, Industry 5.0 and Smart City
ScholarVision Creations
Feedback