| Aspect |
Laser |
X-ray |
| Nature |
Light waves |
Electromagnetic radiation |
| Wavelength |
Visible or near-infrared light(Low Energy) |
Short wavelength (high energy) |
| Uses |
Medical (surgery, eye treatment), communication, cutting materials |
Medical imaging (CT scans), security screening, and material analysis. |
| Penetration |
Limited penetration, mostly surface applications. |
High penetration can pass through the body and other materials. |
| Safety |
Generally safe with proper precautions. |
It can be hazardous, and safety measures must be taken to minimise exposure. |
| Generation |
Produced by stimulating emissions from atoms/molecules. |
Produced by accelerating electrons and hitting a metal target. |
- The X-Ray discovery inspired other imaging modalities like MRI, CT scans, ultrasound, and echocardiography, which today form the foundation of diagnostic tools in healthcare.
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CT Scans
- A CT scan (computed tomography scan) uses X-rays and computer technology to create detailed cross-sectional images of the body. . CT scans are non-invasive and can be performed quickly.
- It’s useful for detecting diseases, injuries, and abnormalities in bones, organs, and tissues.
Ultrasound sonography (USG)
- USG uses high-frequency sound waves to produce real-time images of the body’s internal structures.
- It is commonly used during pregnancy to monitor the fetus, but it’s also helpful for diagnosing conditions in organs like the liver, kidneys, and heart. Ultrasounds are non-invasive and do not use radiation.
Echocardiography (ECG)
- Echocardiography is a specific type of ultrasound focused on the heart. It is a non-invasive procedure that uses sound waves to create images of the heart.
- It provides detailed images of the heart’s structure and function, helping diagnose heart conditions, monitor heart disease, and guide treatment decisions.
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