Radiology in Action: A Look at How Diagnostic Imaging Works

Updated on April 12, 2023

If you’ve ever had a fractured or broken bone or a medical condition that required imaging, you have likely experienced the world of radiology. Radiology is a branch of medical procedure that uses diagnostic imaging to help diagnose and treat various medical conditions. Radiology has revolutionized medicine, allowing doctors to see inside the body without invasive procedures. This blog will examine how diagnostic imaging works and its various modalities.

Understanding It

Diagnostic imaging uses a range of modalities to produce photos of the inside of the body. These images can help diagnose medical conditions, monitor treatment progress, and identify potential health issues. The most common modalities used in this tomography include X-rays, computed tomography or CT, magnetic resonance imaging (MRI), and ultrasound.


X-rays are one of the most common types of radioscopy. X-rays send a small amount of radiation through the body to create an image. The denser the tissue, the less radiation passes through, creating a white image on the X-ray film. Dense bones appear white on an X-ray, while soft tissues, which are less dense, appear grey.

CT Scans

A CT scan uses a more powerful X-ray machine to create detailed body images. A CT scan can show more detail than an X-ray, making it helpful in detecting bone fractures, internal bleeding, and other conditions. During the procedure, the patient lies on a table that moves through a doughnut-shaped machine that takes multiple X-ray images. The images are then combined to create a detailed image of the body.


An MRI is a non-invasive radioscopy procedure that works with a magnetic field and radio waves to visualize detailed images of the inside of the body. Unlike X-rays and CT scans, an MRI does not use radiation. Instead, it utilizes a strong magnetic field and radio waves to create in-depth images of the body’s soft tissues. During the procedure, the patient lies on a table that moves into a sizeable tube-shaped machine. The machine produces a strong magnetic field that aligns the hydrogen atoms in the living body’s tissues. Radio waves are then used to stimulate the atoms, causing them to emit signals picked up by the machine and used to create an image of the body.


Ultrasound is a non-invasive technique that uses high-frequency sound waves to construct pictures of the internal body parts. During an ultrasound, a small handheld device called a transducer is moved over the examined area. The transducer sends sound waves into the living body and picks up the echoes as they bounce back. These echoes then create an image of the body’s internal structures.


Choosing a reputable radiology clinic, such as Inside Radiology, is essential for accurate results. Diagnostic imaging is used for a range of medical conditions and purposes, including:

Diagnosing Medical Conditions

Diagnostic imaging is often used to help diagnose medical conditions, such as bone fractures, internal bleeding, and tumors. This tomography can help doctors see inside the body and identify potential health issues that may not be visible during a physical examination.

Monitoring Treatment Progress

It is also used to monitor treatment progress. For example, an X-ray can show whether a broken bone is healing correctly, while a CT scan can show whether a tumor is shrinking or growing.

Guiding Procedures

Diagnostic picturing is often used to guide medical procedures, such as surgeries and biopsies. For example, a surgeon may use an MRI to guide the placement of a needle during a biopsy.


Diagnostic imaging has revolutionised medicine, allowing doctors to see inside the body without invasive procedures. The various modalities of such tomography, including X-rays, CT scans, MRI, and ultrasound, have unique strengths and limitations. While diagnostic imaging is a powerful tool for diagnosing and treating medical conditions, it should be used judiciously to avoid potential risks. It will become even more precise as technology advances, helping doctors provide better patient care.

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