Red softening:This stage is entered when there is ahemorrhagic infarct. A hemorrhagic infarct is the death of tissues due to oxygen starvation caused by blocked veins in the brain. Red blood cells enter the area of the hemorrhagic infarct and cause a reddening of the tissues. The vein blockag...
The decision of whether or not to scan a pregnant patient is made on a case-by-case basis with consultation between the MRI radiologist and the patient's obstetrician. However, the MRI suite can be a very dangerous place if strict precautions are not observed. Credit cards or anything else...
This can make a large, charged capacitor extremely dangerous — flash units and TVs have warnings about opening them up for this reason. They contain big capacitors that can potentially kill you with the charge they contain. Capacitors are used in several different ways in electronic circuits: ...
In addition, magnets tend to collect an array of ferromagnetic debris, which is hard to remove and can even be dangerous. For this reason, facilities that use very large magnets often have equipment on-site that lets them turn ferromagnetic materials into magnets. Often, the device is ...
Metal objects in the vicinity of an MRI can be dangerous. In 2001, a six-year-old boy was killed when an oxygen tank struck the child. When the MRI magnet was turned on, the oxygen tank was sucked into the MRI, and the child was struck by this heavy object. Because of this potenti...
The earlier method of X-rays leads to exposure to harmful X-rays, which can cause permanent damage to the body. This radiation exposure is dangerous and should be avoided, but unfortunately, there was no way to do this until MRI came along. ...
We're learning more about the craving that fuels self-defeating habits—and how new discoveries can help us kick the habit.
In 1975, 21-year-old Karen Ann Quinlan suffered severe brain damage and ended up in a persistent vegetative state after ingesting a dangerous combination of sedatives and alcohol. Her family went to court to have Karen's feeding tube and respirator removed. In 1976, a court in New Jersey ...
【题文】“The dangerous thing about lying is people don't understand how the act changes us,” says Dan Ariely, behavioral psychologist and Duke university. Psychologists have documented children lying as early as the age of two. Some experts even consider lying a developmental milestone, like ...
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