Before autologous fat grafting for filler, the correct assessment of the amount of fat grafted is one of the most important aspects of the success of the procedure. However, there is no uniform standard for the assessment of autologous fat graft volume. The implementation of autologous fat grafting filler using the syringe method has become a common way to fill soft tissue depressions, defects, and facial rejuvenation in plastic and cosmetic surgery. The amount of autologous fat transplantation should be fully communicated with the candidate before surgery. Because the absorption of fat transplantation is affected by many factors and varies greatly, it is impossible to accurately predict the amount of fat absorption after surgery, and there is the possibility of re-operation, but also according to the acceptance of the candidate and the injection site and other factors can be considered comprehensively, in order to achieve the best surgical results. First, the general assessment method of autologous fat grafting filler Pre-operative careful examination of the candidate’s surgical area depressions, atrophy, scar adhesion, to determine the extent of soft tissue defects or bone defects. Generally, visual observation and finger touching are used for inspection. If necessary, X-rays, ultrasound, MRI and other methods of examination to clarify the damage, to determine the soft tissue defects, can be considered to fill the autologous fat. Second, the assessment method At present, the candidate in the recipient area before autologous fat transplantation, injection of saline for pre-filling, is a common method of autologous fat transplantation volume assessment. C. Precautions (1) For candidates with several years of concave deformity and heavy local scar adhesion, there are often more doubts about the effect of filling before surgery, especially in exposed areas such as the face, and if pre-filling is carried out through preoperative local injection of saline, it allows candidates to have a more intuitive understanding of the postoperative effect and a full understanding of the results. (2) Preoperative saline injection simulates the postoperative effect. For doctors, they can accurately perceive the local conditions of defects and adhesions before the operation, and have a clear understanding of the intraoperative injection of fat grafting, and the effect that can be achieved after the injection; at the same time, it also enables the doctors to better grasp the psychological expectations of the patients, and avoid unnecessary disputes and conflicts. (3) Evaluation of the amount of autologous fat injection should be fully communicated with the candidate before surgery. Physiological saline is injected directly into the depressed area so that the candidate can visualize the change in appearance after autologous fat transplantation. (4) For candidates who fill the temporal, cheek, nasolabial folds and other parts of the body, after injecting saline, you can let them hold a mirror and observe repeatedly, so as to agree with the requirements of the candidates. (5) Candidates need to fully understand the characteristics of autologous fat grafting before surgery, which is described in detail in my previous video. Autologous fat grafting as their own tissue to correct depressed deformity, with safety, no reaction, natural shape and other characteristics; it also has a certain absorption rate, there are individual differences in the amount of absorption, the fat absorption rate of different recipient areas vary greatly, there is the possibility of re-operation. Fourth, the disadvantage of saline pre-filling before injection of autologous fat, increasing the pain of a local acupuncture, and can only be injected into the saline completely absorbed, and then fat injection filling, can not be immediately fat transplantation. Therefore, this method is suitable for the doctor and the patient for the postoperative effect of disagreement, the patient’s psychological expectations and the actual effect of the gap is too large. Tips: MRI is also known as magnetic resonance imaging, the full name of the English language is: MagneticResonanceImaging. in the beginning of the birth of this technology used to be called magnetic resonance imaging, to the early 1980s, as a new medical technology NMR imaging (NMRImaging) the word is increasingly familiar to the public. With the installation of large magnets, some people became concerned that the letter “N” might have a negative impact on the development of MRI. In addition, the word “nuclear” tends to give hospital staff an image of the MRI room as another nuclear medicine department. Therefore, in order to emphasize the advantages of the technique, which does not produce ionizing radiation, and to differentiate it from nuclear medicine, which uses radioactive elements, radiologists and equipment manufacturers agreed to shorten the term “magnetic resonance imaging” to “magnetic resonance imaging (MRI)”.