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Doctor insights on: Ct Scan Density

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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

Dr. Janice Alexander
1 doctor shared a insight

Computed Tomography (Definition)

Ct uses xrays taken an 360 degrees combined with a computer to see"inside" the body. The table moves as the xray tube and detectors spin around the patient 10 times a second or more! the image shows excellent soft tissue detail, enhanced with injection of intravenous contrast or oral contrast. This way the body is shown in slices, in any plane, usually axially, but ...Read more


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How is pet CT scan done?

How is pet CT scan done?

PET/CT scan: You need to fast for 4 hours first, then you will recieve an injection of a small amount of radioactive glucose (i.e. Sugar). Next you will sit in a recliner chair for about 70 minutes to allow the glucose to distribute throughout you. Then you will lie on your back on the pet/ct scanner (a tunnel shaped machine) for 20 minutes. There are no side effects from the test or restrictions afterwards. ...Read more

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Will CT scan shows thickening in kidney?

Not sure: Ct with and without xray dye is a good test for some kidney problems. Not sure what you mean by thickening. Ct shows kidney stones, masses, kidney size/location ; can give a good idea of whether the kidneys are working well. Ct is also good at showing the site of blockage of urine flow, when present. ...Read more

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Ultrasound showing a mass but CT scan normal?

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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Is orbital CT scan and CT scan sinus the same?

Is orbital CT scan and CT scan sinus the same?

Not quite: The CT of the sinuses focuses in on the sinuses (though the radiation goes through the entire skull) and generally covers the entire set of sinuses (sphenoid, maxillary, frontal, ethmoid). The orbital CT will cover the eye sockets (and those pictures are zoomed in). While the sinuses lies behind the eyes (& so they overlap), the focus & coverage of these scans are slightly different. ...Read more

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Could MRI or CT scan detect brain cancer?

Could MRI or CT scan detect brain cancer?

Sure: Mri would be the imaging test of choice, though often we start with a ct. Ultimately, you'll likely need a biopsy to prove it's a cancer. ...Read more

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Abdominal cat scan showed "homogeneous contrast enhancement", pancreas related, insulinoma?

Abdominal cat scan showed "homogeneous contrast enhancement", pancreas related, insulinoma?

Discuss with doctor: The description you gave is a little vague. The best thing to do is review the study with your doctor or with the radiologist that read the ct scan. ...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 heart scan is better, CT scanner or ultra scan?

What heart scan is better, CT scanner or ultra scan?

UltraSOUND: I think you mean cardiac ultrasound (also known as echocardiography). They look at different things. Echo sees over all function, wall thickness, chamber dimensions, valves, and can measure blood flow and pressure. Ct is for detecting calcium and looking at the coronary arteries. ...Read more

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Can CT scan miss stones?

Yes.: It depends on the composition of the stone. Gallstones are usually cholesterol and may not be calcified. Tiny urate renal stones may alson not be seen. ...Read more

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Can CT scan without contrast show brain aneurysm?

Unlikely: Ct scan without contrast is unlikely to show an aneurysm unless it is very large and is calcified. A ct angiogram is a better study to visualize an aneurysm. ...Read more

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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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Does pelvic CT scan show kidneys?

Does pelvic CT scan show kidneys?

Not usually.: The kidneys are normally seen in the abdomen. However, they can be located in the pelvis. Occaisionally we'll see a part of the kidneys depending on where they're located on a pelvic ct scan. ...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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In what aspects CT scan is better than MRI scan?

Looking at bone: The CT scan is better than MRI in detecting bone fractures or pathologies involving the bone. MRI is better at distinguishing between soft tissues. CT scan is also faster & quieter than MRI. However, the CT scan uses radiation & there has been an explosion of radiation-related conditions in recent years. Each modality measures different things. So ask your doctor if the test is needed or not. GL. ...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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Smoker I've been coughing up phlegm tinged with blood at times I had a CT scan it states that their is cystic changes and a parenchymal density lung ?

Smoker I've been coughing up phlegm tinged with blood at times I had a CT scan it states that their is cystic changes and a parenchymal density lung
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Parenchymal density: is a very nonspecific term, unfortunately. It could mean anything from scar to mass to pneumonia to collapse of a small lung segment. Without the images to review, it is difficult to determine. Likewise, there are both acute and chronic causes of cystic changes. The nonspecific report verbiage needs to be interpreted in conjunction with the images themselves and your clinical picture. ...Read more

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Will CT scan abdomen pelvis show ulcer?

Will CT scan abdomen pelvis show ulcer?

Possible,: Maybe, but an upper GI series with barium is better, and endoscopy is the best way to look for an ulcer. ...Read more

Dr. Michael Gabor
1,876 doctors shared insights

Ct Scan (Definition)

Computed tomography (ct scan) or computed axial tomography (cat scan), is a medical imaging procedure that utilizes computer-processed x-rays to produce tomographic images or 'slices' of specific ...Read more