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Doctor insights on: Xray Markers

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Dr. Anthony Filly
1,476 doctors shared insights

Roentgen Rays (Definition)

Roentgen rays are another term for x-rays, which are a form of electromagnetic radiation (other types include light and microwaves). X-rays are used to provide imaging with plain ...Read more


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Cardiac MRI, CTPA, EGC 's, echo's, Chest X-rays, PET scan, blood tests, ECG stress test. All these tests, no diagnosis. Could something been missed?

Cardiac MRI, CTPA, EGC 's, echo's, Chest X-rays, PET scan, blood tests, ECG stress test. All these tests, no diagnosis. Could something been missed?

Laboratory tests: Difficult to answer your question without knowing the symptoms and the physical examination that prompted the imaging studies and blood tests. What do your physicians suggest is the step? ...Read more

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Ekg, stress test, sonogram, chest x ray, blood tests.. Heart is fine? Just turned 22.

Ekg, stress test, sonogram, chest x ray, blood tests.. Heart is fine?  Just turned 22.

Why do you ask?: You list no cardiac symptoms. Let me guess -- you had a few palpitations / heart doing flip-flops. If you have fewer than 5 of these per minute, or if your physician's checked you out and they're not the nasty kind, learn to ignore them and consider cutting back the caffeine. If you can keep in sports, or climb three flights of stairs, i'd stop worrying and get on with being a young man. ...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 CT scan's detect glaucoma?

Could CT scan's detect glaucoma?

No: The issue is glaucoma is elevated eye pressure which usually does not distort tissue in the eye in the range of a ct scan. There are many tests useful to discover glaucoma which your ophthalmologist can obtain for you.. ...Read more

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Sonogram shows 2.2cm, (2) 1cm in neck lymph's. CT contrast scan doesn't identify lymph's. I'm told its inflammation. CT does not pick up inflammation?

CT can: identify soft tissue inflammation, and can identify lymph nodes. Hard to speculate as to why the CT scan didn't show the lymph nodes, but I suspect if they looked normal the radiologist decided not to mention them. The only way to be certain is to have the radiologist look at the CT and ultrasound side by side and reconcile the discrepancy. ...Read more

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Would a chest xray show lymphoma?

Would a chest xray show lymphoma?

It depends...: It depends on the area covered by the x-ray and on how enlarged the lymph nodes are. A chest x-ray would probably show significant lymph node enlargement that may be suspicious for lymphoma in the mediastinal area (inside the chest cavity) and possibly in the supraclavicular (above the collarbone), lower cervical (neck), and axillary (armpit) regions. Inguinal (groin) lymph nodes would not show. ...Read more

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Can CT scan show severe arthritis?

Can CT scan show severe arthritis?

See answer: Yes, although plain radiographs followed by MRI is usually used to define arthritis. ...Read more

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Would MRI scan show kidney disease?

Would MRI scan show 
kidney disease?

"Disease": "Disease, " yes; but not necessarily what type of disease. "Dense"/scarred parenchyma may still need to be biopsied to determine the actual tissue disease. On the other hand, an MRI may be a better test to assess rensl masses (eg renal cell carcinoma vs benign neoplasms). ...Read more

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Ultrasound showing a mass but CT scan normal?

Depends: This depends on the organ of interest. This is not uncommon with the ovaries and uterus as us has an advantage. This is same with the breasts as well. As for other organs in the abdomen, sometimes it may depends on the patient's body habitus or lack of intravenous contrast/dye that some finding may not be apparent on ct. ...Read more

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Can chest xray detect early lung cancer?

Can chest xray detect early lung cancer?

Sometimes: Sometimes 8-10 mm lung lesions can be detected. Detection depends on location of lesion whether it is central or peripheral. Central lesions near mediastinum are many times difficult to recognize on plain radiograph. Cross sectional imaging such as CT is much more sensitive for small hidden lesions than radiograph. ...Read more

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Does CT scan show cancer?

Does CT scan show cancer?

not always: Not all cancer is visible with a ct scan. There are many variables- size of tumor, location, presence or abscence of IV or oral contrast. ...Read more

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Slightly elevated d dimer but negative radiology tests. Whats up?

Slightly elevated d dimer but negative radiology tests. Whats up?

Non specific test: I would put more stock in the negative radiology findings. A d-dimer that is slightly elevated is so non-specific that it is really not at all helpful is making a diagnosis of anything. ...Read more

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Does a normal CT scan exclude pancreatic cancer?

Does a normal CT scan exclude pancreatic cancer?

Not entirely: Ct imaging is useful, but pancreatic cancer can be very difficult to visualize on ct. In fact, even in patients with known pancreatic cancer it's not unheard of for the tumor itself to be poorly or incompletely seen. If there's high suspicion, endoscopy and ultrasound are useful tests. ...Read more

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Does X-ray detect bone metastases?

Does X-ray detect bone metastases?

Not great: X-RAYs are relatively insensitive in the detection of early or small metastatic lesions. Although CT scans are superior, CT scanning is relatively insensitive in showing small lesions, and it has the disadvantage of limited skeletal coverage. Bone scans are very sensitive (they'll pick up everything) but nonspecific (could be just arthritis). MRI and PET scanning are accurate but very expensive. ...Read more

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Marker (Definition)

A "marker" is a protein or enzyme that can represent a disease process. Some markers are specific for a particular disease, while ...Read more