Computed Tomography of the Chest (CHEST CT Scan)

Definition of the Procedure:

Computed Tomography :
an imaging method by which the lungs are scanned in successive layers by a narrow beam x-ray, a computer print out is obtained of the absorption values on the tissues in the plane that is being scanned

Purpose of Procedure:

>used in assessing hilar and mediastinal disease
>used to define pulmonary nodules, small tumors adjacent to pleural surfaces or spine
>an important tool in staging of lung cancer with the additional use of contrast material, CT also makes it possible to distinguish vascular from non-vascular structures, which is particularly important in distinguishing lymph nodes and masses from vascular structures




Preparation of the Patient:

> Remove metallic objects from chest
> Elicit history of allergies if contrast material will be used
> Ensure adequate renal function if contrast material will be used

Procedure:
> Must remain absolutely still during the procedure
> Time is approximately 20 mins if without contrast medium; 60 mins if with contract medium
> Sedation if unable to remain still
> Nothing per orem 4-6 hrs if contrast medium is used.
> Observe for allergic reaction to iodinated contrast material

Chest CT Scan procedure

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