Nuclear Safety And Security Commission

Symmetric bifrontal uptake of bone-seeking agents is usually considered as the main feature of hyperostosis frontalis interna in postmenopausal elderly women. This finding is not uncommon in elderly women because of the change in their hormonal level. However, in the present case, a 66-year-old woman with intra-axial brain metastases of breast cancer showed symmetric bifrontal uptake on bone scintigraphy. Therefore, symmetric bifrontal uptake should not always be considered as a definite indicator of hyperostosis frontalis interna. Further evaluation such as SPECT/CT is needed for evaluation of brain metastases especially in cancer patients.

Assuming that the posture of patients is fixed until the completion of treatment only with confirmation of treatment site before the treatment due to the network of radiation therapy system, there is a concern that radiation dose may be administered into a normal tissue rather than a lesion. To continue to observe the motion of patients that might occur during treatment, the system to detect the motion of patients was developed through leveraging the high-definition video camera, C++ programming language and open CV with 2-evolution technique and BLOB technique. The reproducibility of patient posture was very practical since it allowed us to evaluate the change in the posture of patients in real-time by acquiring video in real-time during the treatment. It is essential to develop a system to detect a motion that may take place voluntarily and control the treatment equipment by tracking the motion of patients in a stable and natural posture suitable for the location of treatment. The purpose of this study is to contribute to the implementation of precise radiation therapy by developing a system to consistently observe the motion of patients based on the aforementioned technology.Keywords: BLOB Technique, C++ Programming Language, Patient Motion Tracking System, Radiation Therapy