Computed Tomography

Definition of Computed Tomography:

A scanning procedure using X-rays and a computer to detect abnormalities of the body's organs.  This technique provides cross-sectional images of body organs, which is much clearer than those provided by conventional X-rays.

Also: CAT Scan, Computerised Tomography, Computerized Axial Tomography, Computerized Tomography, CT Scan

Topics Related to Computed Tomography

Alzheimer's Disease

...the condition
“...This information is needed in order to determine whether imaging studies (CT scan or MRI) are necessary in order to look for changes in the brain...”


...the condition
“...Brain lesions, with invasion of both gray and white matter, can be seen on a CT scan or MRI...”
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More topics Related to Computed Tomography


...recommendation Surgery
“...A 2002 study published in the journal Radiology found that among women who had a CT scan or ultrasound prior to having an appendectomy, a healthy appendix was removed just 7% of the time, compared with 28% of the time when no scan was done.”


...the condition
“...Smaller amounts may be detected with an ultrasound scan of the abdomen, and are occasionally found by accident during an ultrasound or CT scan that is being performed for other reasons...”


...the condition
“...Ultrasound or computed tomography (CT scan) can help to locate the presence and measure the extent of decreased blood flow...”

Bile Duct Cancer

...the condition
“...In addition to a complete medical history and medical examination, diagnostic procedures for bile duct cancer may include ... Computerized tomography (CT scan) – a computer along with X-rays are used to create cross-sectional images of the body...”

Brain Tumor

...the condition
“...It is sometimes hard to know whether a CT Scan or MRI should be done if someone exhibits some of the symptoms and signs of brain cancer, but it is important to know that these studies will usually definitively establish whether a brain...”

Budd-Chiari Syndrome

...the condition
“...Physical examination may find that the liver is enlarged; further testing may include ... CT scan...”

Bulging Disc In Neck

...the condition
“...This requires an MRI, and if more information is required then a Myelogram with CT Scan can be used...”

Carotid Artery Disease

...the condition
“...If your doctor suspects a stroke, he or she may also order a computed tomography (CT) scan of your head to check brain function...”

Chediak-Higashi Syndrome

...the condition
“...If CHS is suspected, the following tests maybe used ... Brain MRI or CT scan...”

Cirrhosis of the Liver

...the condition
“...If a liver examination is necessary, the doctor might order a computerized axial tomography (CAT) scan, ultrasound, a scan of the liver using a radioisotope, or look at the liver using a laparoscope...”

Clostridium Difficile Infection

...the condition
“...An abdominal CT scan may be used to look for CDI complications such as sepsis...”

Creutzfeldt-Jakob Disease

...the condition
“...Computerized tomography of the brain can help rule out the possibility that the symptoms result from other problems such as stroke or a brain tumor...”

CT Scan a treatment
“Alternative names: Computerized Axial Tomography Scan, CAT Scan, Computed Tomography Scan, Computerized Tomography Computed Tomography (CT) is a more modern imaging tool that improves upon conventional X-rays by combining X-rays with computer technology that produces a more detailed, cross-section image of the...”


...the condition
“...Other internal cysts, such as those in the kidneys or the liver, may go unnoticed until an imaging scan (X-ray, MRI scan, CAT scan, ultrasound) detects them...”


...the condition
“...Ultrasound examination and abdominal CT scan have a limited role in the evaluation of chronic diarrhea...”

Dyspepsia / Poor Digestion

...the condition
“...Other tests include imaging (X-ray, CT scan or ultrasound) and testing for H. pylori infection by using a blood test, stool antigen test, urea breath test, or an upper GI biopsy...”

Enlarged Spleen

...the condition
“...Blood tests such as a CBC; Ultrasound; Abdominal film or CT scan; Bone marrow biopsy; Other tests to check for underlying disorders...”

Esophageal Cancer

...the condition
“...Diagnosis of esophageal cancer symptoms is usually conducted through an X-ray method known as the barium swallow, and may also include endoscopy along with a biopsy, and a CT scan of the chest and abdomen...”

Fatty Liver

...the condition
“...An ultrasound or abdominal CT scan may also be performed to evaluate your liver...”

Gallbladder Cancer

...the condition
“...Imaging tests (X-ray, MRI, CT scan, ultrasound, cholangiogram, angiogram) can show suspicious growths such as cancer, blockage, narrowing or dilation of ducts, as well as whether it has spread...”

Hodgkin's Lymphoma

...the condition
“...The doctor may order blood tests and other tests such as X-rays, CAT scan or MRI...”

Hormone Imbalance

...the condition
“...Some of the tests available to females include ... MRI, CT scan, or ultrasound scan – to get an image of the ovaries, uterus, thyroid or pituitary gland...”


...the condition
“...X-ray studies, such as ultrasound and computed tomography scan (CT scan), may help diagnose an enlarged spleen and possible underlying causes, such as tumors...”


...the condition
“...Cranial CT scan, revealing a mass (aggregation of cells) consistent with pituitary tumor...”

Kaposi's Sarcoma

...the condition
“...A bronchoscopy or CT scan may be performed to confirm the diagnosis...”

Kidney Cancer

...the condition
“...These tests include ... Computed tomography...”
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More topics Related to Computed Tomography

Liver Abscess

...the condition
“...(shortness of breath, difficulty breathing, wheezing, or choking); Severe abdominal pain; Vomiting; A diagnostic workup generally includes several of the following: Abdominal ultrasound; Abdominal CT scan or MRI; Complete blood count; Liver abscess aspiration (verifies bacterial infection); Liver scan; Liver function tests; Blood test; Stool test; When detected in time, a liver abscess is...”

Liver Cancer

...the condition
“...CT scan – An X-ray machine linked to a computer takes a series of detailed pictures of the liver and other organs and blood vessels in the abdomen...”

Multiple Myeloma

...the condition
“...These tests include ... Computerized axial tomography (CAT)...”

Multiple Sclerosis

...the condition
“...Magnetic resonance imaging (MRI) usually reveals many more lesions than the CT scan, including some that may be subclinical...”

Neurologic Testing, Conventional a treatment
“...The CAT scan and MRI look at the structure of the brain, whereas the electroencephalogram (EEG), SPECT scan, PET scan, and evoked studies examine the function of the brain...”

Orbital Cellulitis

...the condition
“...Other tests may include ... A CT scan or MRI of the sinuses and orbit...”

Oropharyngeal Cancer

...the condition
“...A PET scan and CT scan are used together in order to provide more detail; an MRI can also be used, as well as a biopsy (using an endoscope or laryngoscope) to remove a tissue sample for testing...”


...the condition
“...If further testing is required, it may involve a chest X-ray, MRI scan, CT scan, and/or echocardiogram (this can check for signs of cardiac tamponade...”

Pituitary Tumor

...the condition
“...If high levels of pituitary hormones are found in your blood, your doctor may arrange for you to have a CT scan or MRI scan...”


...the condition
“...Your doctor will want to investigate an unexplained abnormality seen on an X-ray with additional imaging, usually beginning with a computerized tomography (CT) scan...”

Post-Polio Syndrome

...the condition
“...In addition to the neurological examination, doctors often recommend tests, such as imaging studies (computerized tomography and magnetic resonance imaging), to rule out other disorders with similar symptoms...”

Pulmonary Fibrosis

...the condition
“...If Pulmonary Fibrosis is suspected then various diagnostic tests can be performed ... X-ray or high resolution CT Scan to look for scar tissue and lung damage...”


...the condition
“...If sciatica is suspected, further testing may include blood tests, X-rays, CT scan or an MRI...”

Small Intestine Cancer

...the condition
“...Upper GI tract endoscopy may be useful in detecting areas of concern in the immediate upper GI tract, and a CT scan of the abdomen or an abdominal ultrasound may help to visualize bulky tumors and to rule out any spread of the cancer to adjacent lymph nodes and distant organs such as the liver...”

Sphincter of Oddi Dysfunction

...the condition
“...In about half of all presenting cases, laboratory testing or imaging (blood test, ultrasound, CT scan, or MRCP) will suggest a definite abnormality such as a bile duct stone...”


...the condition
“...In order to confirm the presence of pancreatic disease, a structural abnormality in the pancreas is sought by abdominal X-ray (calcification), ultrasound, CT scan, or ERCP.  When small intestinal disease is suspected as the source of steatorrhea, function tests of intestinal absorption may be performed...”


...the condition
“...Diagnosis concerning the specific type of stroke, its location, and how severe the damage is, can be determined by using a number of advanced imaging tests including Computerized Tomography (CT) Scans and Magnetic Resonance Imaging (MRI)...”

Subarachnoid Hemorrhage

...the condition
“...One of two brain imaging tests will be used: either a computed tomography (CT) scan or magnetic resonance imaging (MRI) scan...”

Subphrenic Abscess

...the condition
“...Other useful diagnostic tests include ultrasound for a right-sided subphrenic abscess and a CT scan for a left-sided subphrenic abscess...”

T4 Syndrome

...the condition
“...X-ray, MRI or CT scan can confirm diagnosis but these imaging techniques can sometimes produce false positives...”

Test Histamine Levels a treatment
“...Possibilities are: skin tests, RAST, or challenge tests; biopsy and/or CT scan.”

Test Serum Uric Acid Levels a treatment
“...These uric acid stones are radiolucent and so do not appear on an abdominal plain x-ray or CT scan.  Their presence must be diagnosed by ultrasound for this reason...”


...the condition
“...Diagnosis involves looking for toxoplasmosis antibodies in the blood, a CT scan of the brain, an MRI of the head, a slit-lamp examination of the eyes, and/or brain biopsy...”

Ultrasound Imaging a treatment
“...The images produced by ultrasound are not as precise as those obtained through a CAT scan or MRI, but it is quick, relatively inexpensive and safe...”

Urinary Retention

...the condition
“...test; Blood tests, including: Complete Blood Count (CBC), Urea and Electrolytes (U+E), Creatinine, Estimated Glomerular Filtration Rate (eGFR), Blood Glucose; Imaging studies, including: Ultrasound, CT Scan, MRI/CT brain scan, Spinal MRI, Cystoscopy; The most urgent and necessary procedure is immediate and complete emptying of the bladder, normally involving catheterization...”

West Nile Virus

...the condition
“...Head CT scan – often normal; Head MRI scan – may show evidence of inflammation (in about one-third of patients)...”
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