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Doctor insights on: What Is Involved In Having A Contrast Ct Scan For My Kidneys

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What is involved in having a contrast CT scan for my kidneys?

What is involved in having a contrast CT scan for my kidneys?

Iv contrast +/- oral: After taking the contrast, taking the images does not take long. The IV contrast has potential 2 problems. You may be allergic to it like any medicine and it may slow down the kidneys if they are not working near full capacity. Your doc can tell the risk based on blood tests of kidney function. ...Read more

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Dr. Austina Cho
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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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Had CT wo contrast of kidneys to look for stones,also had urine checked and fine. Forgot to ask if bladder showed up in CT scan, would it have?CT nrml

Had CT wo contrast of kidneys to look for stones,also had urine checked and fine. Forgot to ask if bladder showed up in CT scan, would it have?CT nrml

Yes, but as a "void": (No pun intended). The bladder, if filled with water, would have shown up on the noncontrast CT scan. The water appears "black", & so not much detail would have been seen there unless a large "white" stone was also present. As with any test, a "normal" scan could be a false negative (missing a small stone or other problem), but in general, a negative scan is reassuring. Best of luck for your healt ...Read more

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How well do kidney stones show in a CT scan without contrast?

How well do kidney stones show in a CT scan without contrast?

Very Well: Almost all kidney stones show up extremely well on a non-contrasted ct scan. A stone that was composed entirely of protein matrix may not show but the typical calcium oxalate, calcium phosphate, and uric acid stones show up very well. ...Read more

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If i had a CT scan without contrast would kidney stones show up ...

If i had a CT scan without contrast would kidney stones show up ...

Yes: In fact, ct scanning without contrast is becoming the gold standard evaluation for kidney stones. Contrast material frequently obscures stones and makes their identification difficult. Stones as small as 1 mm can be detected with unenhanced ct technique. Radiolucent stones which cannot be seen well with plain x-ray technique do show up well with unenhanced ct scan. ...Read more

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Can a CT scan without contrast detect a fatty liver or cysts in liver and kidney?

Can a CT scan without contrast detect a fatty liver or cysts in liver and kidney?

Yes,: it can, although in the case of the cysts, the contrast enhancement helps with the detection and diagnosis. ...Read more

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Would kidney stones show up on a CT scan if i hadn't been given contrast fluids to drink?

Would kidney stones show up on a CT scan if i hadn't been given contrast fluids to drink?

yes!: Yes- that is exactly how a ct for renal stones should be performed- with oral or IV contrast. ...Read more

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Hi dr! i want to ask.. is it possible that a kidney stones was seen in ultrasound but can't be seen in ct scan with contrast?

Yes, because: it had probably passed in the meantime. Small stones generally pass. Most important for you is to prevent recurrence of stones. ...Read more

Dr. Michael Korona
1,791 doctors shared insights

Ct Scan (Definition)

Ct scan uses data from a beam of xrays and reconstructs a cross sectional image of your body. It is a high dose of xrays and used only when the benefits outweigh the risk. Cancer risk is 1 in 500 in children. Also using iodinated contrast might cause transient renal failure in about 5% of patients. (contrast induced nepropathy) most do not explain this to the patient as ...Read more


Kidney (Definition)

The kidneys are paired organs that lie on either side of the vertebral column. Part of their critical functions include the excretion of urine and removal of nitrogenous wastes products from the blood. They regulate acid-base, electrolyte, fluid balance and blood pressure. Through hormonal signals, the kidneys control the ...Read more