MCQ Detailed View

Different medical imaging techniques are used to see inside the human body. These include X-ray, CT-Scan, MRI, and Ultrasound. All of them help doctors diagnose different health problems, but not all of them use the same type of energy. Some use radiation, while others don’t.

A CT-Scan (Computed Tomography Scan) gives the highest radiation dose among common diagnostic scans. A CT machine takes many X-ray images from different angles and then combines them into a detailed 3D image. Because it uses many X-rays in one test, the radiation dose is much higher than a single X-ray. For example, a simple chest X-ray gives a very small amount of radiation, but a chest CT-Scan can give hundreds of times more radiation.

Ultrasound is completely safe because it does not use radiation at all. It uses sound waves to create images of organs, tissues, and even unborn babies during pregnancy. MRI (Magnetic Resonance Imaging) also does not use radiation. It uses strong magnets and radio waves to make very clear pictures of the body. Normal X-rays do use radiation, but the dose is much lower compared to CT-Scans.

Because of the high radiation dose, CT-Scans are only recommended when doctors need very clear and detailed images, such as in cases of brain injuries, internal bleeding, lung disease, or cancer diagnosis. Doctors always try to minimize exposure to radiation by only suggesting a CT when it is absolutely necessary.

So, the correct answer is CT-Scan, because it delivers the highest radiation dose in medical diagnostic imaging