Proses di Dalam Tubuhmu kalau Kamu Diperiksa dengan Mesin MRI

Summary

This script offers an intriguing look into the workings of an MRI machine, revealing its ability to detect various objects within the body with the help of a strong magnetic field. It explains the process of using radio waves to excite hydrogen atoms, which, when returned to their original state, produce signals that form detailed images of the body's interior. The script also touches on the limitations of MRI, such as the inability to detect objects without low-energy water molecules and the challenges posed by metal objects like dental braces. It compares MRI with X-ray machines, highlighting their differences in detecting internal structures and the relative costs of the equipment.

Takeaways

• 🧲 The script describes a scenario in a lab with a new type of MRI machine, emphasizing its ability to check various objects and its main components including a gradient field, radio waves, a computer, and a large magnet.
• 🌐 The MRI machine uses radio waves with a frequency matching the low-energy water molecules in the body to excite them, causing them to absorb energy and then return to their original state, which is used to create images of the body's interior.
• 📉 The contrast in the MRI images is influenced by the number of low-energy water molecules, with areas containing more water appearing whiter and bones appearing very dark due to their composition and water content.
• 🔎 The MRI machine can detect deep parts of the body and display them from various angles, thanks to the gradients that can distribute the magnetic field into smaller parts.
• 🔍 The script mentions the use of a contrast agent containing sodium iodide to enhance the magnetic signal from the body to the MRI machine, resulting in clearer images.
• 🚫 The MRI machine cannot be used to check all objects; for example, a plastic box with no low-energy water molecules inside is not detected.
• 🚷 The script humorously addresses the issue of metal objects like dental braces and makeup, which can interfere with the MRI process and potentially cause discomfort or inaccurate results.
• 🛑 Safety precautions are highlighted, such as removing all metal objects and ensuring the patient's comfort to prevent claustrophobia during the MRI scan.
• 💰 The cost of MRI machines varies greatly, with the price depending on the strength of the magnetic field, ranging from a few billion rupiah for a second-hand machine to over 16.8 billion rupiah for a new one with a 0.3 Tesla field.
• 🆚 The script contrasts MRI machines with X-ray machines, noting that X-rays are more like cameras that use radiation to penetrate the body and create images based on different absorption rates by body tissues.
• 🛡 X-ray machines require shielding to protect from radiation, and they are generally cheaper than MRI machines but are limited to external imaging and cannot detect internal body parts like MRI can.

Q & A

What is the main purpose of the device mentioned in the script?

The main purpose of the device mentioned in the script is to perform Magnetic Resonance Imaging (MRI), which is used to check various objects and create detailed images of the inside of a body, such as that of a penguin.

What are the four main components of the MRI machine described in the script?

The four main components of the MRI machine are the gradient coils, radio waves, a computer, and a large magnet as the main component.

How does the MRI machine manipulate hydrogen atoms in the body to create images?

The MRI machine uses radio waves with a frequency that matches the energy of low-energy water molecules in the body. These molecules absorb energy, causing hydrogen atoms to flip. When the radio waves stop, the molecules return to their original state, releasing energy that is detected by the MRI machine to create images.

Why does the MRI machine need an object to be placed inside it for imaging?

The MRI machine needs an object to be placed inside it because the hydrogen atoms in the object interact with the magnetic field and radio waves, which allows the machine to detect and create images based on the distribution of these atoms.

What is the significance of the contrast agent mentioned in the script?

The contrast agent, which contains a magnetic substance like gadolinium, is used to enhance the magnetic signal from the body, resulting in clearer images on the computer screen.

How does the MRI machine differ from an X-ray machine in terms of its imaging capabilities?

The MRI machine uses magnetic fields and radio waves to create detailed images of soft tissues and internal structures, while an X-ray machine uses X-rays that pass through the body and are absorbed differently by various tissues, resulting in images that are particularly good at showing bones but not as detailed for soft tissues.

What are the potential issues with wearing metal objects during an MRI scan?

Wearing metal objects during an MRI scan can cause problems such as heating of the metal, which can be uncomfortable or dangerous for the patient, and it can also interfere with the magnetic field, leading to inaccurate images.

Why is it necessary to remove all metal objects before an MRI scan?

It is necessary to remove all metal objects before an MRI scan to prevent interference with the magnetic field, which could affect the accuracy of the images, and to ensure the safety of the patient by avoiding any potential heating or movement of metal objects.

What is the cost range for an MRI machine as mentioned in the script?

The cost for an MRI machine ranges from approximately two billion rupiah for a used machine to 16.8 billion rupiah for a new machine with a magnetic field strength of 0.3 Tesla.

How does the MRI machine handle the issue of claustrophobia in patients?

The script mentions that there are open MRI machines with a more open design that can help patients who suffer from claustrophobia feel more comfortable during the scanning process.

What is the role of the gradient in the MRI process?

The gradient in the MRI process is responsible for distributing the magnetic field into smaller parts and can display different parts of the body from various angles, contributing to the detailed imaging capabilities of the MRI machine.