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Doctor insights on: Radiography

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Ct scan, mri, nuclear medicine imaging, ivp scan, how are they different?

Ct scan, mri, nuclear medicine imaging, ivp scan, how are they different?

Quite different: Ct involves xray type radiation with cross sectional imaging in transaxial, sagittal, and coronal projections. Nuclear medicine, internal irradiation either injected intravenously, inhaled, ingested, injected subcutaneously.Ivp uses injection of contrast material for visualization of kidneys and bladder with x-ray. Mr imaging uses no ionizing radiation magnetic fields to generate x-sectional images. ...Read more

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What is limited-scope radiography?

What is limited-scope radiography?

Very focal eval: It's all based on context and question at hand but generally this term would be used for only a single x-ray or two of a very specific area. For example, an x-ray of just the lower ribs looks for a fracture rather than a more routine whole chest x-ray evaluation. ...Read more

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How do pet scans, mri, ct, and bone/gallium scans differ?

How do pet scans, mri, ct, and bone/gallium scans differ?

Different mechanisms: Mri uses magnetic radiation( no x-ray) for anatomic localization and characterization of different parts of body, water and fat constitution of different tissues.Ct uses x-ray to characterize anatomy of body, better for bone than mr.Pet, bone, gallium scans use radio tracers intravenously.Petglucose metabolism of tumors, gallium (infection/tumor), bone scan for fxs, tumors, infection bone metabolism. ...Read more

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What’s CT angiography?

What’s CT angiography?

Specially : Timed ct scan to evaluate arteries of the body part imaged. See radiologyinfo.Org. ...Read more

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Can "x rays films" go through airport scanners?

Yes: There is no problem as long as the film has been used to take x-rays. Unexposed film can't be scanned. ...Read more

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Can CT scan diagnose meningitis?

Can CT scan diagnose meningitis?

Not diagnostic: A ct is part of the work up of meningitis. However, a lumbar puncture is the test that typically allows for a diagnosis of meningitis by obtaining cerebrospinal fluid for study and cultures. ...Read more

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Can CT scans accurately detect arteriosclerosis?

Can CT scans accurately detect arteriosclerosis?

OnlyAfterLongEnough: Atherosclerosis, known to start ~age 7 on average, & microcalcifications (within artery wall smooth muscle cells just outside the plaque) can be seen with a microscope & ca+2 stains within early years but are too small to see with any current ct machines. These may become visible by the best ct machines by early 30's, 2 decades later but typically a decade before obvious clinical events & symptoms. ...Read more

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Is CT venography superior to X-ray venography when imaging the legs?

Is CT venography superior to X-ray venography when imaging the legs?

Both are accurate: in the hands of a skilled sonographer ultrasound is also a good method. All three techniques are useful to map the veins ...Read more

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Can DEXA scan detect osteomalacia?

Can DEXA scan detect osteomalacia?

Osteomalacia: No. A Dexa detects osteoporosis, or decreased amount of bone matrix. Osteomalacia is an abnormal type of bone, soft bones, abnormal building process. You can have both osteoporosis/malacia, so dexa is still done in the workup to measure the amount of bone. Vit D deficiency, GI disorders that cause malabsorption, kidney disease, liver disease, certain drugs... all are part of the differential. ...Read more

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Will MRI scans show cancer?

Will MRI scans show cancer?

Depends: Mri is very good at showing abnormal tissue from normal tissues and can pick up various cancers very well. Some cancers, however, can be small and not well seen on mri. Some may be better seen on ct. Cancers involve in the stomach and colon are usually not well seen and may require endoscopy or colonscopy. Some breast cancers are also better seen on mammograms than mri. ...Read more

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Could computed tomography angiography show heart problems?

Could computed tomography angiography show heart problems?

CTA: Cardiac computed tomographic angiograpy is performed to try and diagnose cardiac anatomy and pathology. It doesn't diagnose everything but can provide very useful information that often yield a diagnosis if the study is ordered appropriately. ...Read more

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What is the difference between pet scans, mri, ct, and bone/gallium scans?

What is the difference between pet scans, mri, ct, and bone/gallium scans?

A lot: Sorry to be so vague. They are very different in what can be seen and what can be diagnosed. Not enough room to go through the details. The Internet has many resources for this information. Try this one: http://www.radiologyinfo.org/ ...Read more

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What are the differences between pet scans, mri, ct, and bone/gallium scans?

What are the differences between pet scans, mri, ct, and bone/gallium scans?

Anatomy vs Physiolog: Mri and ct scans are typically looking at the anatomy of a patient, as well as differences in blood flow if contrast is administered. Pet, bone and gallium scans are all looking at the function, or physiology of the patient, and the anatomy is of secondary concern. For example, pet scans are usually using f-18 fdg, a glucose analog, and display differences in glucose use, a main energy source. ...Read more

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Computed tomography test for chest pain?

Computed tomography test for chest pain?

ChestCT: Done in many emergency rooms as a way to look for pulmonary embolism, dissection of aorta, sometimes coronary artery blockage if contrast is used with specific protocols. ...Read more

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Will a panoramic dental X-ray detect tmd?

Will a panoramic dental X-ray detect tmd?

Possibly: A panoramic x-ray is a good screening tool for tmd and is usually the first x-ray taken. However, a panoramic x-ray will only reveal tmd if there is bony involvement of the tmj, such as various forms of arthritis, like rheumatoid, psoriatic or osteoarthritis (also known as degenerative joint disease). A panoramic x-ray will not show any soft tissue problems, such as a displaced disc; an MRI will. ...Read more

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