Computed tomography scan


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Computed tomography (CT or CAT) scan

A specialized type of x-ray imaging that uses highly focused and relatively low energy radiation to produce detailed two-dimensional images of soft tissue structures, particularly the brain. CT scans are the chief competitor to ultrasound and can yield higher quality images not disrupted by bone or gas. They are, however, more cumbersome, time consuming and expensive to perform, and they use ionizing electromagnetic radiation.

Patient discussion about Computed tomography scan

Q. I get bad headaches had ct scans and m.r.i. even sinus surgery, suffering 2yrs now, dizzness occurs too..

A. If all prior medical investigations turned out normal, and sinus surgery didn't help relieve your symptoms, I would suggest the reason for your headaches is probably migraine attacks, that can cause severe headaches, and no CT scan or MRI can diagnose them. The diagnosis is made clinically, by your doctor. Migraine headaches can be eased by proper medications, before and during an attack. You should consult a neurologist.

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References in periodicals archive ?
However, after the assessment and calculation of computed tomography scan, his left lobe of liver is too small to be safely donated to his mother.
A computed tomography scan showing enlarged retroperitoneal lymph nodes (arrow).
Radiologic evaluation, including abdominal ultrasound and/or computed tomography scan can also be of great help, but exploratory laparoscopy or laparotomy is a reasonable consideration when a thorough diagnostic workup fails to identify the aetiology of the symptoms.
Five minutes after coronary angiography, a low-dose cardiac multidetector computed tomography scan was peformed on a Brilliance 64 scanner (Philips Medical Systems, Best, The Netherlands) using retrospective ECG-gating.
A computed tomography scan shows massive stone burden in ileocecal pouch and a few calculi in the ileal part of the pouch.
A computed tomography scan of his abdomen and pelvis showed splenic abscesses, but no prostatic abscess was noted.
Findings of marked dilatation of the small and large bowel with minimal bowel wall thickening of the transverse colon on computed tomography scan of the abdomen were consistent with neutropenic enterocolitis.
Large mass on computed tomography scan (coronal section).
A computed tomography scan of the chest showed hilar calcifications and enlarged mediastinal lymph nodes.
A computed tomography scan at the excretory phase showing contrast in the scrotum.
In-hospital evaluation included a chest X-ray, which showed bilateral interstitial infiltrates, a high resolution computed tomography scan consistent with alveolitis, normal spirometry with a decreased diffusing capacity for carbon monoxide, and nonspecific transbronchial biopsy findings.
A computed tomography scan image showing water-density right perinephric collection with lobulated contours extending to the renal hilum and compressing mildly the renal parenchyma.

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