What is the difference between ordinary CT, enhanced CT or other examinations for lung cancer screening?

First, the nature is different, second, the characteristics are different, and finally, the uses are different. Enhanced scanning is to inject drugs from veins, usually anterior elbow veins, into blood vessels for ct fluoroscopy. The plain scan of ct fluoroscopy is a venous scan without iodine contrast agent, which is usually used for the first CT examination. The most important thing in plain CT scan is to master the technique of slice thickness and slice spacing in different parts or organs and regions of interest. When the layer thickness is equal to the layer spacing, it is continuous scanning.

According to the latest news I learned, rapid intravenous injection of 60% Merrill Lynch 1.5 ~ 2.0 ml/kg enhanced scanning kept the iodine content in the blood at a certain level. Ordinary CT scan is normal, without enhancement or enhancement. Enhanced CT is scanning after intravenous injection of water-soluble iodine contrast agent. With the increase of iodine concentration in blood, the density difference between diseased tissue and adjacent normal tissue increases, thus improving the display rate of lesions.

Contrast-enhanced CT examination is a rapid examination method of CT fluoroscopy after intravenous injection of contrast agent, which can well show the changes of diseases. However, after injection of contrast agent, the human body may have an allergic reaction. Those who need enhanced CT scanning should carefully read the instructions for enhanced contrast scanning, and then do iodine allergy test after signing and agreeing. Only negative patients can undergo enhanced scanning after 20-30 minutes, while positive patients cannot undergo enhanced scanning.

Please drink plenty of water after the examination to accelerate the excretion of contrast media, and leave the hospital for observation after half an hour. If you feel uncomfortable after leaving the hospital, please go to the nearest hospital for treatment immediately. Ordinary CT does not need to inject contrast agent, which avoids the possibility of contrast agent allergy. In addition, the radiation generated by scanning is harmful to human body. Ordinary CT only needs to scan the organ once, while enhanced CT needs to scan the region of interest continuously and repeatedly at different times.

Finally, what is the difference between ordinary CT and other examinations for lung cancer screening? Today, the analysis is here.