1, cta (China Quality Inspection Alliance)
With the support of the General Administration of Quality Supervision, Inspection and Quarantine, China Inspection Warner Quality Technology Center and China Quality Inspection Alliance (CTA) were jointly established by product quality supervision and inspection institutions of several national key provinces and cities to meet the needs of China's entry into WTO. All its members are recognized by the International Laboratory Accreditation Cooperation (ILAC) Mutual Recognition Agreement (MRA).
2. China Education Assistance Information Center
CTA, full name of China Teaching Assistant; ; It is the abbreviation of China Education Assistance Information Center. China Teaching and Learning Information Center was founded by a group of people who love public welfare. Mainly responsible for the collection, verification, release, publicity and overall planning of teaching and student information; CTA takes improving the present situation of education in poverty-stricken areas in China as its historical mission, adheres to NBCO's public welfare belief, and advocates the rescue concept of "donating on demand and helping on demand"; CTA is not driven by power or economic interests, but by volunteer spirit and public welfare belief.
3.CTA angiography
CTA is the abbreviation of CT angiography. After intravenous injection of contrast agent, spiral CT scanning was performed. In three-dimensional reconstruction, skin, muscle, bone and other structures that do not need to be displayed are removed, and only three-dimensional vascular structures and visceral structures are displayed. CTA has been widely used in clinic, such as coronary CTA, cerebrovascular CTA, carotid CTA and pulmonary CTA, with clear images and accurate diagnosis.
Clinical significance of coronary CTA examination
Coronary atherosclerotic heart disease is a common disease that seriously harms human health. It is of great significance to diagnose coronary heart disease early before clinical symptoms appear. Catheter coronary angiography is a common clinical examination method to evaluate coronary artery lesions, but it is a traumatic examination method with certain risks (the mortality rate is 0. 15% and the incidence of complications is10.5%), with high examination cost and complicated operation. Coronary CTA is a noninvasive examination method, which has the characteristics of low cost, simple operation, multi-angle observation and high accuracy. It can not only provide the situation of blood vessel lumen, but also provide the changes of blood vessel wall and the structure of adjacent blood vessels and tissues. You can also reconstruct the long and short axes of the heart image and observe the atrioventricular wall, atrioventricular cavity, valve and inflow and outflow channels of the heart.
4. Certified tax accountant
In China, it's a qualification exam. Certified tax agent refers to the professional and technical personnel who have passed the national unified examination, obtained the qualification certificate of certified tax agent and registered, and engaged in tax agency activities.
5.CTA is a commodity trading consultant (CTA) fund, also known as managed futures fund. It refers to a form of fund organization in which professional fund managers use the funds entrusted by customers to decide to invest in the global futures market and options market for profit and charge corresponding management fees. CTA funds, hedge funds and mutual funds are all alternative investments. In recent years, pension funds, insurance funds, endowment funds and charitable funds have shown strong investment interest in non-mainstream investment tools, and the scale of CTA has expanded rapidly. Accordingly, the role and influence of CTA fund in the global futures and options market are increasingly apparent.