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Rajiah Simon [3] formulated a particular version of the PPT criterion in terms of the second-order moments of canonical operators and showed that it is necessary and sufficient for -mode Gaussian states (see Ref. [4] for a seemingly different but essentially equivalent approach).
Electrical conductivity and permittivity vary among biological tissue types and depend on their free ion content. [ 2 ] [ 3 ] [ 8 ] Further factors affecting conductivity include temperature and other physiological factors, e.g. the respiratory cycle between in- and expiration when lung tissue becomes more conductive due to lower content of ...
Functional electrical stimulation – schematic representation: Illustration of motor neuron stimulation. (a) The cell nucleus is responsible for synthesizing input from dendrites and deciding whether or not to generate signals.
When various barriers and restricting factors such as cell membranes and microtubules interfere with the free diffusion, we are measuring an "apparent diffusion coefficient", or ADC, because the measurement misses all the local effects and treats the attenuation as if all the movement rates were solely due to Brownian motion. The ADC in ...
In 2004, a pulsed electromagnetic field system was approved by the FDA as an adjunct to cervical fusion surgery in patients at high risk for non-fusion. [6] On 8/9 September 2020 the FDA recommended to shift PEMF medical devices from the Class 3 category to a Class 2 status. [7]
When the above hold, quantum theory can be extended to a Euclidean theory, defined by translating all the operators to imaginary time using the Hamiltonian. The commutation relations of the Hamiltonian, and the Lorentz generators , guarantee that Lorentz invariance implies rotational invariance , so that any state can be rotated by 180 degrees.
Modern 3 Tesla clinical MRI scanner.. Magnetic resonance imaging (MRI) is a medical imaging technique mostly used in radiology and nuclear medicine in order to investigate the anatomy and physiology of the body, and to detect pathologies including tumors, inflammation, neurological conditions such as stroke, disorders of muscles and joints, and abnormalities in the heart and blood vessels ...
Otherwise a rigid cervical collar or surgery to immobilize the neck for three months is recommended. [2] If the MRI is abnormal surgery to hold the neck still may be carried out [2] Typically people should avoid further high risk activities for the next six months. [3] The use of corticosteroids is not generally recommended. [2] The condition ...