Needle guide device development for CT system-based biopsy

If the CT system is utilized in the biopsy of a patients' lesion area, the entry angle of the biopsy needle is critical for precise and safe biopsy needle penetration to a desired tissue area. CT imaging is a way to utilize the CT system in biopsy, in which the needle entry angle is planned and a physician follows the planned angle while an assistant watches an angle meter with the unaided eyes to provide assistance for biopsy precision. As such observation with unaided eyes is prone to large errors, the CT imaging and correction procedures should be repeated several times to improve the precision of the needle entry angle, elevating the patients' pain and exposure dose. This study researched methods necessary for a precise and efficient CT system-based biopsy and presented relevant examples.