Pancreas Disease's Application Research Of 64ct Radiation Low Dose

Low doses of scanning is always very controversial on international issues, how to use appropriate doses a CT scan was performed many scientists have their own research methods, how to use the simple method of testing for patients with dosage is vital to protect the help.At present, in carries on CT the inspection in the process, doctor and the technicians used have isolationroom operation, along with the hospital safe guard and management measure's consummation, the active populations is illuminated the dosage nearly is comes from the natural background radiation level. But regarding the patient, his/her sensitive organ and the organization is illuminated the dosage the harm is noticeable. Along with the CT technology's unceasing use, causes to examine the crowd to use in every year in the radiation dose which the phantom diagnosis receives, CT accounts for the proportion to continue to elevate, only accounts for 3%~5% in developed country's CT inspection, but its CT dosage has occupied the integral dose 35%~45%. The CT inspection is illuminated the dosage to receive many factors the influences, mainly includes the CT system technology characteristic , the scanning parameter and the operators factor. But is most important concerns with the CT system technology characteristic and the scanning parameter choice. The scanning parameter mainly has tube voltage (kV), tube electric current (mA), trace time (s), level thick (Pitch), the pitch and the scanning volume. The scanning parameter's establishment is the image formation quality determining factor, the high scanning condition is helpful to the gain high quality image, but increased the radiation dose which the patient accepts, therefore becomes pair of contradictory, is also the present world puts the area of fire attention the hot topic. How under the guarantee picture quality's premise, to establish the scanning condition reasonably, the greatest degree reduces the patient radiation dose, the scanning parameter may reduce the patient to illuminate the dosage, has manifested the radiation shield optimized choice. This research considered the abdomen for the high-speed sweep spot, along with the people living standard's enhancement, the rich food choice creates pancreatic disease's occurrence frequently, thus becomes the modern society the high morbidity, but itself easy body surface survey, to belong to the radiation sensitive organization, easy to have the radiation damage, this article primary intention by reduces a milliampere quantity to achieve the most low dose diagnosis image gradually, achieves the appropriate dosage scanning to carry on the synthesis elaboration. How did the discussion in the CT inspection process guarantee that under the picture quality premise, reasonable effective reduces the radiation dose, protects the patient. Generally thought that 0.5-2.0Gy the radiation dose may cause the anorexia, disgusting, the vomit, is bigger than 5Gy to be possible to appear vomits many times and the diarrhea. But the pancreatic gland is illuminated the dosage to be possible oversized to cause cancer of the pancreas's occurrence probability to advance, this research altogether selects 110 patients to carry on the CT inspection, measures the good girth of paunch beforehand, the selection identical level carries on the scanning, reduces the electric current in the fixed milliampere pitch's situation, selects the best to make public electric current, and does not cause the image to lose the diagnosis value. Finally uses the spss13.0 statistics software to carry on the variance analysis. The statistical result showed: When uses GE lightspeed VCT carries on the abdomen inspection the low dose scanning and the conventional dosage scanning compares, regarding GE lightspeed in the VCT abdomen department scanning's process, increases along with the girth of paunch, the pancreatic gland is illuminated the dosage also to increase along with it. Statistics operation which carries on to it, its exposure scope achieves 61.8%~74% single scanning weighting the CT dosage index to be possible to reach 69.99%~83.30% The girth of paunch the most low voltage may control in the 20cm-26cm scope in the 80kv-60kv scope, the girth of paunch the most low voltage may control in the 27cm-28cm scope in the 90kv-70kv scope, the girth of paunch the most low voltage may control in the 29cm-32cm scope in the 100kv-90kv scope The experiment may obtain, in carries on the abdomen inspection regarding GE lightspeed VCT in the process, along with voltage reduction, the pancreatic gland is illuminated the dosage also to reduce, suggests various medical department through this experiment, in carries on the forehead inspection to the patient in the process to pay attention especially to the patient abdomen protection, the choice optimization's scanning parameter, chooses the low dose abdomen scanning parameter as far as possible, simultaneously studies the convenience practical protective measure, protects benefit of patient's healthy.