An<unk>  <unk> , sometimes called a C-Arm, refers to a special<unk><unk>  device used in medical<unk> ng involving x rays.  It consists of an input window, input phosphor, photocathode, vacuum and electron optics, output phosphor and output window.  It allows for lower x-ray doses to be used on patients by magnifying the intensity produced in the output<unk> , enabling the viewer to easily see the structure of the object being<unk> d.  They were introduced by Philips in 1955.
X-ray image intensifier
Chest x ray template
Farmer's lung physical examination
Cough physical examination
Altitude sickness x-ray
Burn physical examination
Echocardiography or ultrasound template
French catheter scale