One of the causes of infertility is tubal infertility (inflammatory blockage), which often requires “tubal imaging”. Is there any radiation? Is the contrast agent harmful to the body? These problems are well solved in our hospital: 1. The diameter of the contrast catheter has been improved, from 12F to 9F, which greatly reduces the trauma, so it is generally painless; 2. The key is that if blockage of the fallopian tubes is found during the imaging, the treatment can be carried out in time, killing two birds with one stone.