[The technology innovation and optimization of clinical application for CT and MRI]

Along with the application of new medical imaging technology, the clinical diagnosis and treatment relies more and more on the support of imaging study, from health examination to curative effect evaluation. It becomes more prominent than ever to protect the safety of patients and to improve the accuracy of diagnostic imaging with the increasing number of examinee. X-ray radiation hazards and adverse events of contrast agent are major hidden safety risks in the imaging process. The new technology of radiation protection, optimization of check sequence, as well as the dosage reduction of X-ray scanning can reduce the X-ray radiation hazards to examinee. Decreasing the amount of contrast agent can reduce the risk of severe adverse events in CT or MRI enhanced scan. Non-contrast MRA imaging make angiography possible for the patients with renal insufficiency or contrast-allergy. The clinical application of new image techniques, such as energy imaging, function imaging and molecular imaging, not only contribute to improve the accuracy of diagnostic imaging, but also facilitate diagnostic imaging from morphological and anatomic level extending to functional and molecular level. It is the only way to meet the growing clinical demands on precise imaging with technical innovation and optimization. In order to guarantee the benefit for every examinee, we need highly concern about how to avoid any possible safety incidents during imaging examination and the waste of medical resources caused by repeat examination.