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A more recent hypothesis which may explain the FLASH effect is that hypoxic stem cell niches are preserved more readily through FLASH RT. [ 13 ] [ 7 ] Pratx and Kapp, 2019, suggest that stem cells which reside in a hypoxic niche are relatively radioresistant, but whenever surrounding tissue is damaged, the stem cells become more oxygenated and ...
Medical technology, or "medtech", encompasses a wide range of healthcare products and is used to treat diseases and medical conditions affecting humans. Such technologies are intended to improve the quality of healthcare delivered through earlier diagnosis , less invasive treatment options and reduction in hospital stays and rehabilitation ...
The generic FLASH technique emerges as a gradient echo sequence which combines a low-flip angle radio-frequency excitation of the NMR signal (recorded as a spatially encoded gradient echo) with a rapid repetition of the basic sequence. The repetition time is usually much shorter than the typical T1 relaxation time of the protons in biologic ...
A full-power flash from a modern built-in or hot shoe mounted electronic flash has a typical duration of about 1ms, or a little less, so the minimum possible exposure time for even exposure across the sensor with a full-power flash is about 2.4 ms + 1.0 ms = 3.4 ms, corresponding to a shutter speed of about 1 ⁄ 290 s. However some time is ...
Digital medicine encompasses a wide range of disciplines, including techbio, healthtech, and biomedical engineering. It involves the use of digital tools and platforms to collect, store, and analyze medical and biological data, including electronic health records, genomic data, and medical imaging.
Flash memory is an electronic non-volatile computer memory storage medium that can be electrically erased and reprogrammed. The two main types of flash memory, NOR flash and NAND flash, are named for the NOR and NAND logic gates. Both use the same cell design, consisting of floating-gate MOSFETs. They differ at the circuit level depending on ...
Medical applications of radio frequency (RF) energy, in the form of electromagnetic waves (radio waves) or electrical currents, have existed for over 125 years, [1] and now include diathermy, hyperthermy treatment of cancer, electrosurgery scalpels used to cut and cauterize in operations, and radiofrequency ablation. [2]
A medical halogen penlight to observe pupillary light reflex An LED headlamp. A penlight is a small, pen-sized flashlight, often containing two AA or AAA batteries. In some types, the incandescent light bulb has an integral lens that focuses the light, so no reflector is built into the penlight. Others use incandescent bulbs mounted in reflectors.