X-ray dose

A higher x-ray dose leads to a clearer picture.

To expose large segments of the population to X-ray doses on a routine basis is asking for trouble.

This type of display is normally used for measuring gamma or X-ray dose rates.

The backscatter X-ray dose was calculated by averaging its exposure through the entire body.

They have been falsely assumed to feel pain less than whites and to require higher X-ray doses for a readable film.

The helical scan method reduces the x-ray dose to the patient required for a given resolution while scanning more quickly.

Cancer may be definitely induced by X-ray doses hundreds and thousands of times higher than those received from diagnostic X-rays.

Disadvantages include the high X-ray dose, possibly leading to radiation damage to the sample, and the necessity to carefully shield the experiment.

For gamma ray and X-ray dose measurements a unit such as the Sievert is normally used.

To achieve a sufficient image quality for diagnoses and reporting, the angiographic system uses up to 10 times higher x-ray doses than standard fluoroscopy.

The X-ray pictures must pass inspection by a review panel of specialists and the X-ray dose must not be too high.

Breast CT Scanning employs penetrating radiation and so includes some x-ray dose delivered to the patient.

It limits the X-ray dose absorbed by the patient in vertical pose by using a multi-wire chamber detector to detect X-rays.

But at a cellular dimension of micrometres, the enhanced Auger dose could increase the irradiating X-ray dose by only a factor of 2 or 3.

In this model the equivalent x-ray doses were much higher, but would be concentrated in the tissues facing the source, while the gamma component penetrated the whole body.

The limit is defined as the X-ray dose (energy per unit mass) a cryo-cooled crystal can absorb before the diffraction pattern decays to half of its original intensity.

Miyachi conducted a study on mice and found that a 200 mGy X-ray dose protects mice against both further X-ray exposure and ozone gas.

The U.S. Food and Drug Administration (FDA) developed voxel-based virtual family body phantoms for X-ray dose study.

By eliminating the need for x-ray film, toxic chemicals, and reducing x-ray dose exposure requirements, the adoption of digital radiography improves both patient and environmental health and safety.

Surveys had shown that X-ray doses vary by a factor of 20 or 30 between different hospitals, and that about a quarter of all hospitals had been giving patients unnecessarily high doses.

Dental x-rays increase the risk of meningioma, in particular for patients who had frequent dental x-rays in the past, when the x-ray dose of a dental x-ray was higher than in the present.

Series resistance of unswept crystals increases after an X-ray dose, and anneals back to a somewhat higher value for a natural quartz (requiring a corresponding gain reserve in the circuit) and back to pre-irradiation value for synthetic crystals.

The UK Health Protection Agency has completed an analysis of the X-ray dose from backscatter scanners and has written that the dose is extremely low and "about the same as people receive from background radiation in an hour".

For guidance regarding catheter positions during the examination, the physician mostly relies on detailed knowledge of internal anatomy, guide wire and catheter behavior and intermittently, briefly uses fluoroscopy and a low X-ray dose to visualize when needed.