Dr. Yu is mainly engaged in tumor interventional therapy as following: Superfractioned Radiotherapy of liver cancer, Percutaneous Microwave Coagulation Therapy of liver cancer, Radio Frequency Therapy of liver cancer, external beam and intracavity brachytherapy of esophagus cancer, single and multiple bone metastases radiotherapy, the joint application of external beam radiotherapy and indwelling chemotherapy pump and heperthermic therapy of pelvic tumors, Радиотерапия рака легких и трахеального стента на стеноз дыхательных путей и т. Д. Д -р Ю.