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Doctor insights on: Computed Tomography

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Dr. Neigatha Graney
1 doctor shared a insight

Computed Tomography (Overview)

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 often coronal or saggital.


Dr. Neigatha Graney
1 doctor shared a insight

Computed Tomography (Overview)

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 often coronal or saggital.


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What is computed tomography stimulation?

What is computed tomography stimulation?

See below: I believe you are referring to the use of ct scanner in a new procedure for implanting deep brain stimulation electrodes to treat parkinson disease, & essential tremor, under general anesthesia. The following youtube video shows the procedure: http://www.Youtube. Com/watch? V=nc7cyadeo_c. ...Read more

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Computed tomography (Tip)

Think twice about that CT Scan - the radiation dose can be about 200 times that of a Chest X Ray ! ...See more

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What is risk in regard to computed tomography?

Small: Xrays small risk of cancer. Contrast small risk of reaction or renal damage. Go to acr accredited scanner to be safe. See radiologyinfo. Org. ...Read more

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What is pitch when it comes to computed tomography?

What is pitch when it comes to computed tomography?

Amount: Table moves with each rotation of the x-ray tube in the scanner. ...Read more

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What is the definition or description of: computed tomography?

What is the definition or description of: computed tomography?

Image inside body: 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 often coronal or saggital. ...Read more

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Will I get any medicine for pain when I go for the computed tomography?

Will I get any medicine for pain when I go for the computed tomography?

No: A routine ct does not cause pain. Even if contrast is given, only a small IV is placed and no pain medicine is necessary. If you have an underlying condition that causes pain and limits your ability to lay on your back you may need to talk to the doctor requesting the exam to see if you should take medicine prior to the exam. ...Read more

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For visiualization of the internal structure of human body, is it best to have computed tomography?

For visiualization of the internal structure of human body, is it best to have computed tomography?

No: It depends upon what you need to visualize. If you need to see the cerebellum, a ct scan doesn't work as well as a mri. If all you need is to look at the liver or kidneys, then an MRI is overkill compared to an easily accessible ultrasound. Plus, ct scans expose you to (unnecessary) radiation. So ask your family physician and radiologist what's the best way to find the information you need. ...Read more

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Is computed tomography angiogram cta a very common procedure?

Is computed tomography angiogram cta a very common procedure?

CT angiogram: It is being done much more often when it is necessary to visualize blood vessels (for example to see if there's a blockage). There is some radiation involved but it is considered much less "invasive" and has fewer complications than the regular type of "angiogram", where blood vessels are visualized by inserting thin tubes called catheters directly into them to inject a dye. ...Read more

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How common is it for someone to need a helical computed tomography?

Very Common Test: 'Helical computed tomography' -- a cat scan -- is an immensely valuable test for evaluating diseases of every part of the body. Scanners are widely available, both in hospitals and in outpatient centers, and the images obtained provide valuable insight into many diseases. ...Read more

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What is the definition or description of: computed tomography angiogram cta?

Artery test: A special type of ct scan where intravenous dye is injected, and imaging is timed so that the arteries of interest are maximally opacified by the injected dye. Ct images in this test are acquired rapidly, and the actual scan will likely be done in a matter of seconds. Historically, evaluating the arteries required threading a catheter into the artery of interest. Cta is non-invasive. ...Read more

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What is the use of spect (single-photon emission computed tomography) in nuclear medicine?

Multiple : Spect is a modality of nuclear medicine imaging that allows for 3d imaging, therefore better for diagnostic purposes. Uses include scans of the bones, lungs, heart. ...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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Who developed the first CT (computed tomography) unit? What did doctors use before then?

Who developed the first CT (computed tomography) unit? What did doctors use before then?

EMI: The Beatles company, Electronic Musical Instrument Co, EMI, produced the first CT scanner. Wikipedia has a great discussion of the history: http://en.wikipedia.org/wiki/X-ray_computed_tomography

I was trained before CT was in use. We had to rely on our wits and some much more invasive tests. ...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 to 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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Can computed tomography angiography show heart problems right?

Can computed tomography angiography show heart problems right?

It depends: On regular contrast-enhanced ct exams, cardiac abnormalities including masses or thrombus can be detected, but little information regarding the coronary arteries can be obtained. On a dedicated coronary ct exam with contrast (ekg gated), the coronary arteries can be evaluated for narrowing or blockages. This is usually not possible on regular ct exams due to motion. ...Read more

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What exposes the body to more: radiation bone scan or computed tomography?

What exposes the body to more: radiation bone scan or computed tomography?

CT vs bone scan: The amount of CT radiation exposure depends on the type of CT. Average effective radiation dose for bone scan is about 6 mSv. Dose for head CT is 2mSv, for abdomen CT is 8 mSv, and for CT angiogram 16mSv. ...Read more

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Which exposes the body to more radiation bone scan or computed tomography?

Which exposes the body to more radiation bone scan or computed tomography?

Sometimes same dose: Background radiation at sea level: 3 msv per year, denver residents get: 6 msv per year, cross-country flight: 0.02 msv, x-ray chest: 0.06 msv, ct head: 3 msv, ct chest: 5 msv (equivalent to 100 chest xrays)
ct abdomen: 5-10, average bone scan 6.5 msv. Radiation depends on size of patient." radiation affects growing body in children more than adults. Doses to children are much less. ...Read more

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Which procedure exposes patients to more radiation: a bone scan or a computed tomography?

Which procedure exposes patients to more radiation: a bone scan or a computed tomography?

Sometimes same dose: Background radiation at sea level: 3 msv per year, denver residents get: 6 msv per year, cross-country flight: 0.02 msv, x-ray chest: 0.06 msv, ct head: 3 msv, ct chest: 5 msv (equivalent to 100 chest xrays)
ct abdomen: 5-10, average bone scan 6.5 msv. Radiation depends on size of patient." radiation affects growing body in children more than adults. Doses to children are much less. ...Read more

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Expert opinions? Which modality exposes patient generally to more radiation, bone scan or computed tomography?

Expert opinions? Which modality exposes patient generally to more radiation, bone scan or computed tomography?

Sometimes same dose: Background radiation at sea level: 3 msv per year, denver residents get: 6 msv per year, cross-country flight: 0.02 msv, x-ray chest: 0.06 msv, ct head: 3 msv, ct chest: 5 msv (equivalent to 100 chest xrays)
ct abdomen: 5-10, average bone scan 6.5 msv. Radiation depends on size of patient." radiation affects growing body in children more than adults. Doses to children are much less. ...Read more

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How many cardiac cta (computed tomography angiogram) procedures are performed annually in small hospitals?

How many cardiac cta (computed tomography angiogram) procedures are performed annually in small hospitals?

Thousands: Coronary cta mostly performed in cardiology offices. Many performed in hospitals as well. Hundreds of thousands of these scans done each year. I read many of these tests a year. Very good technology. ...Read more

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I had a head computer assisted tomography scan and want to know if radiation used?

I had a head computer assisted tomography scan and want to know if radiation used?

Yes: It is true that ionizing radiation (x-rays) are used but the dose for a single ct of the head is low and should not have any effects. ...Read more

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What is computerized tomography (ct)

Imaging...: A 'ct' scan is a very sophisticated imaging procedure designed at taking detailed pictures of one's bodies; to help the doctors better pinpont the causes of what ails you. ...Read more

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Is a spiral (helical) computerized tomography CT of the chest the same thing as a high-resolution CT scan?

No: Essentially all ct now is spiral.
High resolution ct of the chest is a special exam to evaluate the lung tissue using very fine slices and special image manipulation to see fine detail in the tubes and air sacs of the lung. ...Read more

Tomography (Definition)

Old fashioned tomograms used a moving x-ray source and flat detector to image at a certain depth in a patient. Most commonly this was used to image the kidneys. The most common tomograms used today are in cat scans, or computer assisted tomography. An x-ray source and multiple detectors spin around you, and the data is reconstructed by a computer into a slices, or ...Read more


Dr. Michael Gabor
1,875 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