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Imaging is not inexpensive, and it is not a good strategy for long-term preservation of records. It is almost never a good idea unless it is used to create better access to the records. Imaging is also used clinically: The best established application is the use of fMRI for pre-surgical mapping to localize cerebral functions in tissue within or near regions intended for neurosurgical resection (Matthews et al. Imaging is also important for determining the stage (telling how advanced the cancer is) and the precise locations of cancer to aid in directing surgery and other cancer treatments, or to check if a cancer has returned.
Digital imaging is a science and, as such, must conform to accepted standards and the applicable rules of evidence. Ignoring this basic requirement risks damaging the acceptability of this powerful tool in future prosecutions in every state in America. Digitally performed PET-MRI coregistration was also found to increase childhood CNS tumour characterisation in 90% of the cases and can be used to obtain a more specific diagnosis with regard to tumour grading [20 ]. Digital point and shoot cameras give the option to preview and delete images, because their LCD displays. Digital cartridge systems would be for people who have their old film equipment.
Digitization of a video or electronic image captured through an optical microscope results in a dramatic increase in the ability to enhance features, extract information, or modify the image. When compared to the traditional mechanism of image capture, photomicrography on film, digital imaging and post-acquisition processing enables a reversible, essentially noise-free modification of the image as an ordered matrix of integers rather than a series of analog variations in color and intensity.
MRI scanners give off a radiofrequency (RF) which creates a magnetic field and causes the protons to resonate at this frequency. When the RF from the MRI scanner is shut off the protons return to their original state of random frequency and spin. MRI is not only used in the clinical setting, it is increasingly playing a role in many research investigations. The patient is firstly placed within a magnetic field created by a powerful magnet. MRI showed 72 (21.7%) additional abnormalities not confirmed on radiographs. In group B, radiographs showed 40 osseous abnormalities (8.6%) in 466 patients.
Ultrasound allows soft-tissue measurement with zero dose but requires skilled interpretation, and there is evidence of systematic differences between ultrasound and other data sources, perhaps due to the effects of the probe pressure. Optical imaging also involves zero dose but requires good correlation between the target and the external measurement and thus is often used in conjunction with an x-ray method. Ultrasound service from Conquest Imaging addresses every part of the ultrasound machine. There are many parts to a basic ultrasound machine that must be kept in top condition.