"The inverse square law describes the principle of dose reduction as the distance from the source increases. As the radius increases, the area over which the dose is distributed increases according to A = 4πr2, where A is the area and r is the radius of the sphere. Therefore, the dose is proportional to the inverse of the square of the radius. Thus doubling the distance will reduce the dose by a factor of four."
"The inverse square law describes the principle of dose reduction as the distance from the source increases. As the radius increases, the area over which the dose is distributed increases according to A = 4πr2, where A is the area and r is the radius of the sphere. Therefore, the dose is proportional to the inverse of the square of the radius. Thus doubling the distance will reduce the dose by a factor of four."
"In fluoroscopy, there should be a minimum distance between the X-ray tube and the patient of about 30 to 38 cm to reduce the skin entrance dose of the patient. Meanwhile, the image intensifier (which intensifies the X-ray photons to produce a bright image) should be as close to the patient as possible to reduce image blur and maintain the brightness for the image intensifier, thus reducing the patient's dose. If the image intensifier is too far away from the patient, the brightness output will reduce. Meanwhile, the automatic brightness control (ABC) will increase the X-ray tube output to increase the brightness, thus causing increased dose to the patient 6."
"In fluoroscopy, there should be a minimum distance between the X-ray tube and the patient of about 30 to 38 cm to reduce the skin entrance dose of the patient. Meanwhile, the image intensifier (which intensifies the X-ray photons to produce a bright image) should be as close to the patient as possible to reduce image blur and maintain the brightness for the image intensifier, thus reducing the patient's dose. If the image intensifier is too far away from the patient, the brightness output will reduce. Meanwhile, the automatic brightness control (ABC) will increase the X-ray tube output to increase the brightness, thus causing increased dose to the patient 6."
"In fluoroscopy, there should be a minimum distance between the X-ray tube and the patient of about 30 to 38 cm to reduce the skin entrance dose of the patient. Meanwhile, the image intensifier (which intensifies the X-ray photons to produce a bright image) should be as close to the patient as possible to reduce image blur and maintain the brightness for the image intensifier, thus reducing the patient's dose. If the image intensifier is too far away from the patient, the brightness output will reduce. Meanwhile, the automatic brightness control (ABC) will increase the X-ray tube output to increase the brightness, thus causing increased dose to the patient 6."
Expected headings
"Applications"
"Fluoroscopy"
"Nuclear medicine"