The transmission of energy in medical images refers to

X-rays can penetrate human tissues and transfer energy to X-rays to form images.

X-ray is a kind of high-energy electromagnetic radiation with strong penetrating power. In medical imaging, doctors use X-rays for X-ray fluoroscopy and X-ray photography, so as to observe the internal structures of the human body, such as bones and organs. X-rays can penetrate human tissues and transfer energy to X-rays to form images.