Which one can see through you, X-ray, CT, or MRI?

On November 8, 1895, Roentgen discovered the "X-ray", a magical radiation that changed human understanding of diseases. To commemorate Roentgen, this day was designated as "International Radiological Day".

I heard that after receiving X-rays, I won't be able to prepare for pregnancy for six months. The radiation is too high~

That's still CT, I heard you can see more clearly, and the radiation is also okay.

OMG, guys, X-ray, CT, or MRI, the silly editor who couldn't distinguish between them was completely messy in the wind.

Why not just do a CT scan?

The principle of X-ray film and CT is the same, both of which utilize the penetration effect of X-rays to form images with different attenuation intensities of radiation lines through different tissue densities of the human body.

Why don't you just give me a CT scan?

Compared to X-ray plain films, CT is more expensive and the radiation dose received by patients is higher.

So from the perspective of patients, for patients who come to the orthopedic department of the hospital for treatment due to trauma, we usually choose to undergo X-ray examination as the first choice, and in general, a clear diagnosis can be made.

But if suspicious lesion images are found on plain films and cannot be diagnosed, it is recommended to provide CT examination as a supplementary enhancement.

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Can CT diagnose the suspected lesion on the X-ray film?

If there are really no fractures, just some skin injuries, CT examination can help eliminate the suspected lesions on the X-ray film.

However, if it is a hidden fracture or avulsion fracture that cannot be clearly detected on an X-ray, CT is definitely a life-saving straw for you!

Because the X-ray image is a two-dimensional overlapping image, it is relatively one-sided.

The CT image is composed of a series of cross-sectional images, which is equivalent to dissecting the tissue structure layer by layer, clearly and one by one displaying more details and structures, and the resolution is better than that of X-ray films. Then, many personalized post reconstruction treatments can be performed for the lesion, from inside out and from all directions to discover and observe the lesion.

Let's give an example!

We now view the X-ray image as the unopened toast in the back, which can be faintly seen on the top layer

Some small black dots, but not very clear.

We will perform a "CT scan" on the toast and cut it into slices. After completing the inspection, it was discovered that there was a unique cave inside!

The small black spots that were just uncertain turned out to be raisins one by one, and there were also several raisins among them.

What is magnetic resonance imaging (MRI)?

Magnetic resonance imaging, also known as MRI, is currently one of the most precise and expensive medical imaging devices that can be used on the human body.

The principle of magnetic resonance imaging is actually Faraday's law in high school physics, where a conductive coil can generate a magnetic field. When the human body is in a magnetic field, a portion of atoms will resonate with the pulse magnetic signal of the external magnetic field, which is heard by the "thousand mile ear" of the receiver.

The computer reprocesses the weak resonance signal, resulting in distinct black and white, fine and complex anatomical images of the human body.

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