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Super-Resolution Imaging

Researchers at Helmholtz Zentrum München and the Technical University of Munich (TUM) have developed the world’s smallest ultrasound detector. It is based on miniaturized photonic circuits on top of a silicon chip. With a size 100 times smaller than an average human hair, the new detector can visualize features that are much smaller than previously possible, leading to what is known as super-resolution imaging. Since the development of medical ultrasound imaging in the 1950s, the core detection technology of ultrasound waves has primarily focused on using piezoelectric detectors, which convert the pressure from ultrasound waves into electric voltage. The imaging resolution achieved with ultrasound depends on the size of the piezoelectric detector employed. Reducing this size leads to higher resolution and can offer smaller, densely packed one or two-dimensional ultrasound arrays with improved ability to discriminate features in the imaged tissue or material. However, further reducing t

Virus in the Blood Can Predict Severe COVID-19

A blood test on hospital admission showing the presence or absence of SARS-CoV-2 can identify patients at a high risk of severe COVID-19. Admitted patients without virus in their blood have a good chance of rapid recovery. This according to researchers at Karolinska Institutet and Danderyd Hospital in a new study published in the scientific journal Clinical Infectious Diseases. Blood samples were taken from patients with a confirmed COVID-19 infection within three days of admission to the Department of Infectious Diseases, Danderyd Hospital, Sweden. Patients with measurable levels of the new coronavirus SARS-CoV-2 in their blood were seven times more likely to develop critical symptoms and eight times more likely to die within 28 days. “This readily available test allows us to identify patient groups at high or low risk of severe COVID-19, which enables us to better guide the treatment and monitoring of these patients”, says the study’s lead author Karl Hagman, infectious diseases co

Monsoon and dehydration: Are you drinking enough water?

Dehydration i s a common complaint during hot and humid weather. This is because humidity can make you feel hotter. That’s why a 320C can feel like 380C if the humidity level is as high as 65%! Importance of hydration – - Our body is made up of 70% water which is concentrated in all our cells. Dehydration strips the cells of water and vital minerals and hence a person feels tired, lethargic, and dizzy. Dehydration during monsoon can happen to anyone of any age. Therefore, it is very important to drink an ample amount of mineral water to replenish the body’s mineral balance and maintain a healthy temperature. - During monsoon, people prefer multiple cups of hot beverages like coffee or tea over plain water and hence they do not realize how little water they have consumed. You may not even realize you are dehydrated until you start feeling giddy or have muscle cramps. Even a 2% decrease in the body’s water weight can lead to problems like forgetfulness, confusion, a

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