There are 2 possibilities:
1) Your chiropractor was having some fun and joking around, be glad you have a personable and fun chiropractor.
2) Your chiropractor is a nut job, find a new chiropractor.
X-rays have a wavelength that can penetrate most materials except for dense materials like bone and lead. They are commonly used in medical imaging to visualize bones and tissues inside the body.
The primary body wave that is a longitudinal wave is the P-wave (primary wave). It is the fastest seismic wave and travels through the Earth's interior by compressing and expanding the rock in the direction of the wave's propagation.
Body Waves
P-wave
p wave
transverse wave
X-rays help doctors see broke bones, and also diseases inside of a human body.
p wave
an orgasm flows through an old mans body
An X-ray.
The P-wave which is a form of body wave known as a compression or longitudinal wave.
The primary body wave that is a longitudinal wave is the P wave. P waves are compressional waves that travel through solid and liquid materials by causing particles to move in the same direction of wave propagation.