MRI and PET-CT both have obvious differences in price, working principle and scope of application.
1. Different prices: MRI is priced at around 900~1000 dollars, while PET-CT is more expensive, requiring several thousand dollars or even around 10,000 dollars.
2. Different working principles: MRI mainly uses protons in the nucleus of hydrogen atoms in human tissues for imaging. PET-CT examination mainly combines the functional metabolic information provided by computed tomography imaging and the pathological and anatomical information provided by computed tomography imaging, so that the two form complementary advantages.
3. Different scope of application: MRI is more widely used, with higher resolution for soft tissues, and can be used to check soft tissue injuries and inflammation in the abdominal mediastinum and neck. In addition, injuries and inflammation of bone joints and ligaments can also be detected by MRI. PET-CT is mainly used for early screening of tumors and evaluation of the treatment effect of tumor patients, as well as people with a history of long-term chronic diseases.
Different patients have different diseases and choose different ways of examination, the specific examination should be carried out under the guidance of professional doctors.