Imaging scans are diagnostic procedures that help healthcare providers to observe inside the body if they suspect something might be wrong in the body. There are certain abnormalities, such as a fracture, injury or tumour, which cannot be diagnosed only through blood tests. That is when an imaging scan plays its role.
There are a variety of imaging scans, CT and MRI scans are the most common. Although both of the imaging scans are superior in finding out anomalies in the body but there are certain dissimilarities in them. Most people do not know the difference between a CT scan and an MRI scan. In this article, let’s delve into the differences between CT and MRI scans.
The difference between CT scans and MRI scans
What are CT and MRI scans?
A computed tomography scan or CT scan is an imaging technique that uses X-rays to create images of the bones, muscles and tissues. A patient lies on an examination table that slides into the CT scan machine. A series of X-rays spins around the patient to capture several images from different angles. The computer then puts the images together to create a three-dimensional picture. CT scans use a small amount of radiation.
A magnetic resonance imaging or MRI scan is an imaging technique that uses strong magnetic fields and radio waves to create images of the bones, muscles, and organs. The magnetic fields and radio waves cause the body's molecules to line up in a certain way and send signals to the machine. The computer then transforms the signals into images. MRI scans do not use radiation and are considered to be safer than other scans.
What do CT and MRI scans show?
Both scans provide detailed images of the different parts of the body. Doctors usually recommend a CT scan to diagnose:
- Bone fractures
- Strokes
- Blood clots
- Internal bleeding
- Tumours
- Joint issues
- Bone injuries
- Cancer development
Doctors usually recommend an MRI scan to diagnose:
- Bone fractures
- Ligament tears
- Joint issues
- Nerve problems
- Inflammation
- Spinal issues
- Soft tissue injuries
What can a CT scan show that an MRI cannot?
CT scans are often used for medical emergencies as they provide faster results, allowing doctors to provide prompt treatment. Doctors use a CT scan to look at blood vessels to diagnose the cause of a stroke.
What are the procedures of a CT scan and an MRI scan?
The procedures for both a CT scan and an MRI scan are similar. You lie down on an examination table that slides into the round machine. You have to lie still during the whole procedure. Also, you might be required to hold your breath for a few seconds. However, the main difference in their procedure is that a CT scan is quieter than an MRI scan. An MRI scan in Bangalore makes a loud thumping noise while taking pictures.
Which scan is preferred among these scans?
Which scan you need depends on your condition. Healthcare professionals generally prefer CT scans in Bangalore to detect any conditions related to the lungs, and MRIs to detect any conditions related to the spinal canal. MRIs are also preferred to detect brain tumours, soft tissue injuries, and ligament tears.
CT scan and MRI scan: Which is better?
Both CT and MRI scans are exemplary in detecting the anomalies in the body. Neither CT scans nor MRI scans are better than the other. Which of these is suitable for you depends on your specific need or the condition that the doctors are trying to diagnose.
Healthcare professionals generally recommend a CT scan to detect a fracture, while an MRI scan is recommended to detect issues with the spinal canal, brain or heart. CT scans are preferred over MRIs in emergency situations. On the other hand, MRIs are safer than CT scans as they do not use radiation. However, your doctor will guide you on which one you need.
