Useful wikipedia articles: Exposure Value. A low kVp results in more absorption and less transmission in the anatomic tissues, but with more variation in the x-ray intensities exiting the patient, resulting in a high-contrast (short-scale) image. More often, the radiographer evaluates the level of contrast achieved to improve the contrast for additional radiographs or similar circumstances that arise with a different patient. Product Enquiry. Maintenance & Child Support Calculator When adequate penetration is achieved, further increasing the kVp results in more radiation reaching the IR. A 1-liter bolus may be appropriate for most patients, such as overweight adolescents and adults. Once the anatomic part is adequately penetrated, as the quantity of x-rays is increased, the exposure to the IR proportionally increases (Figure 10-1). WebBelow is the formula used by OSHA to determine the cumulative exposure for an eight-hour shift: E = (Ca Ta+Cb Tb+. kVp and mAs A 1-liter bolus may be appropriate for most patients, such as overweight adolescents and adults. WebLong Exposure Calculator app screen shot showing a baseline shutter speed of 1/25th of a second and the changes to the shutter speed depending on what ND filter I choose at the top. . Calculate Your Radiation Dose You may need to run the calculator multiple times to get a complete picture How to use this calculator. For example, when the mAs is increased, density is increased; when the mAs is decreased, density is decreased (Figure 10-2). If the mAs is too low (low exposure to the digital IR), image brightness is adjusted during computer processing to achieve the desired level. Too much radiation reaching the IR (within reason) produces a digital image with the appropriate level of brightness as a result of computer adjustment during image processing; however, the patient has been overexposed. 5 5. Use decimal notation for percentage, i.e., 2% is .02. State exposure technique modifications for the following considerations: body habitus, pediatric patients, projections and positions, soft tissue, casts and splints, and pathologic conditions.

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