Is the c-type arm dr or cr?

dr.

According to the query on Youlaiyi.com, the C-arm belongs to DR. The C-arm is a type of DR (direct digital X-ray photography system). It is a digital imaging device that can convert X-rays into digital signals and process and store images through a computer. C-arms are often used for positioning and diagnosis during surgery, such as fluoroscopic positioning in orthopedic surgery.