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Basics of CT and MRI Scans PowerPoint Presentation

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Description : CT stands for computed tomography. Sometimes, these are referred to as CAT scans, which stands for computerized axial tomography. CT scans use x-rays to create multiple cross-sections of our body.

Tags : CT MRI pediatrics,pediatrics,MRI Scans,MRI,magnetic resonance imaging

Published on : Jun 11, 2023 | Views : 3242 | Downloads : 2

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Basics of CT and MRI Scans
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What Is a CT Scan? CT stands for computed tomography. Sometimes, these are referred to as CAT scans, which stands for computerized axial tomography. CT scans use x-rays to create multiple cross-sections of our body.
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Most often, CT scans are used to look for problems in your bones, tissues, brain or other organs. Doctors typically use CT scans to identify the following conditions: Circulation problems: Heart disease, blood vessel blockages, kidney problems, pulmonary edemas and aortic aneurysms are viewed and diagnosed with CT scans. Abdominal abnormalities: Unknown masses in the liver, pancreas or kidneys can be identified as tumors or not. Urinary bleeding causes: Why you have blood in your urine is another symptom CT scans can investigate.
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Lung issues: Breathing problems can be diagnosed through one of these scans that can identify signs of fibrosis, emphysema, tumors, pleural effusion, collapsed lungs and more. Skeletal system problems: Sometimes, regular x-rays don’t give doctors enough of a picture of the bones. CT scans are better for seeing complex fractures, spinal cord injuries, osteoporosis damage and bone tumors. Head conditions: Hemorrhaging, brain calcification, tumors and blood flow problems to the brain can be seen on a CT scan.
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What Happens During a CT Scan? For the computed tomography scan, if the doctor requested a contrast, contrast fluid is injected into our system. If this is need for scan of digestive tract, patient might be asked to drink contrast. The table slides into the scanning device, which is much quieter and faster than an MRI. Patient should not feel any pain during the exam. Nothing touches our body during the scan. Most scans finish in 10 minutes.
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What Is an MRI? MRI stands for magnetic resonance imaging. This uses radio waves and strong magnets to create a view of our bones, tissues and organs. MRI scans are ideal for getting a detailed, in-depth look at our tissues or organs.
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Doctors use MRIs to diagnose several conditions including: Breast cancer: Doctors can find breast tumors with an MRI. Tumors: Other cancerous masses around the body appear on an MRI, allowing for examination of suspicious areas. Joint abnormalities: Ligament, joint and tendon problems appear clearly on an MRI. Blood vessel irregularities: Several types of blood vessel issues can appear on an MRI. These issues include aneurysms, damage from previous heart attacks, artery blockages and other problems with the heart or blood vessels.
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Brain problems: An MRI is often used to diagnose multiple sclerosis, stroke, aneurysms and other conditions that originate or affect the brain or spinal cord. Inflammatory bowel conditions: With an MRI scan, doctors can examine bowel conditions marked by inflammation such as ulcerative colitis and Crohn’s disease. Liver disease: Damage to the liver from disease or lifestyle, such as cirrhosis, appears on MRIs. Bone disorders: MRIs will show both bones and the soft tissues around them. Seeing both gives your doctor a complete image of your bone health and if you have infections or tumors on or near your bones.
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What Happens During an MRI? Before the scan, patient may need a contrast agent. Sometimes, patient will have one scan without the contrast dye followed by an MRI with the dye. Depending on what parts are scanned, the patient may drink the solution or have it injected into a vein. After removing all clothing and jewellry, patient dresses in medical scrubs (top and pants) or a hospital gown. Next, they lie on the scanner table, which slides into the device. They will have earplugs or headphones to wear. The MRI machine makes a lot of noise while running. During the scanning process, patient may be required to hold your breath for specific scans. Even the slight movement of breathing can affect the results. MRIs are painless and last up to an hour, though some may take slightly more time.
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What’s the Difference Between an MRI and CT Scan? There are several differences between CT scans and MRIs. Usually, the doctor will decide on the best scanning tool for your situation. Here are several ways the two stand apart. Cost: CT scans are almost half the price of MRIs. Speed: CT scans take much less time than MRIs. The exact time required depends on whether you need a contrast dye for the procedure, but MRIs always require more time for the scan. A typical CT scan lasts 10 minutes whereas MRIs can take up to an hour or longer. Images: MRIs will produce sharper, more detailed results, especially of soft tissues and behind bones, which may block views on CT scans. Sound level: MRIs tend to be very noisy, and you will get earplugs or headphones to reduce the effect on your ears. CT scans are much quieter than MRIs, and you won’t need ear protection during the procedure.
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Limitations of CT and MRI in pediatrics Patient movement artefacts Radiation dose in CT scan Difficulty in visualisation of abdominal structures due to less fat. Contrast use to be done when needed Patient compatibility in MRI scan
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