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All you need to know about computed tomography

27 May 2014

The computed tomography is an investigation method that uses X-rays in order to create detailed images of the structures inside the body. The investigation is performed by a radiologist technician and the images obtained are interpreted by a radiologist physician.

Before describing the stages of this type of investigation, we wish to draw your attention on several issues that must be understood:

The patient is not allowed to carry with it metal objects including jewelry, eyeglasses, prostheses or hairpins that can damage the CT images. Usually, it is not necessary to take off the underwear. Instead of the clothes, you will receive a robe and a pair of slippers.

Warning! You may be asked to remove the hearing aids and dental prostheses.

Furthermore, throughout the investigation, you will be left alone in the tomography scanner room, but you will be constantly supervised through a window and you can always talk to the people from the surveillance camera.

Children who can not stay still must be sedated during the procedure, namely they will fall asleep, because any movement can damage the quality of the examination.

Depending on the type of investigation, you may be asked to hold your breath during the examination: any movement can cause the distortion of the image.

Depending on the type of examination, it may be required the injection of a contrast agent. It will be administered orally (in the case of CT abdomen and pelvis investigation the contrast agent must be swallowed) or by means of an injection. The intravenous injection by means of a flexula lasts between 10-30 seconds. Please note that incidents/accidents may occur during the vein puncture or during the administration of the contrast agent.

After injection, heat sensations, metallic taste or mild nausea may occur. About all these side effects will be notified at the beginning of the investigation. Any other effects should be immediately brought to the attention of the personnel through the personnel-patient communication device of the unit.

Warning! During the preparations, small delays may occur, especially when a more detailed discussion is necessary because emergency investigations of the patients are to be performed or due to unforeseen technical malfunctioning of the unit. These are the factors which may cause delays, and no one will be held liable for this!

After the investigation is performed, please remain in the waiting room for another 30 minutes with the flexula in the vein because you will be supervised in order to exclude a possible allergic reaction.

After the flexula is removed from the vein, please return to the secretary where you will be informed on the results release modality and term.


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