Can the fallopian tube be blocked and pregnant?

The fallopian tube is a slender tube growing on both sides of the uterus, generally about 9-14cm long. The fallopian tube as its name suggests is the tube that transports eggs and fertilized eggs. If the fallopian tube is blocked, the patient cannot conceive naturally. What kind of method to check, is there any blockage in the fallopian tube? At present, the most commonly used methods are, salpingography, ultrasound tubal ventilation or liquid examination, and hysteroscopy tubal liquid or tubal intubation injection, laparoscopic tubal dredging examination, etc. At this stage, the method of tubal examination is still relatively many, but if the tubal is really blocked very seriously, can not be dredged, we can through assisted reproductive technology, that is, IVF to replace the function of the tubal, artificial pregnancy.