Human Sex In An MRI Machine

This video presents how human sex in an MRI machine looks and we present how an MRI machine works. We aren’t sure whether it was the machine operators who set the scenario up or the two subjects, but decided the outcome was of interest in the name of science.

Without wishing to get into the mechanics of human sex, we thought it may be of interest to explore how an MRI machine works. These pieces of technology have massively advanced our understanding of the human body over the last few decades and resulted in a hugely different approach to healthcare.

What does MRI stand for?

MRI stands for Magnetic Resonance Imaging. The machines use a combination of magnetic fields and radio waves to form images of the body and present the benefit of not exposing patients to ionizing radiation.


The potential for MRI was first identified by a physician and scientist called Erik Odeblad in the 1950′, but was not invented or realised until Paul C. Lauterbur created evidence in 1971 and published his theory in 1973. The process of the image production was refined by Peter Mansfield from the University of Nottingham during the late 1970’s, which resulted in a machine being able to produce images in seconds rather than hours. The work from the two men resulted in them both receiving a Nobel Prize in 2003.

How it works

When a person is placed in an MRI machine, it creates a powerful magnetic field around the area to be investigated. In most medical uses, the machine identifies protons within tissue that contain water molecules. These molecules can then be used to generate a signal that then allows imaging of the body to take place.

Initially, energy from a moving magnetic field is applied to the patient at an appropriate frequency. Hydrogen atoms then get excited and start to emit a radio frequency signal that is picked up by a receiving coil. The radio signals can then be made to locate position information through varying the magnetic field using gradient coils. The coils are then quickly turned on and off which is what you will here in an MRI scan and also in part of the video. The contrast between tissues is measured by the speed at which atoms get back to the equilibrium state.