Risks
Although this test uses radioactive materials, the total amount of radiation exposure is low. In order to decrease the radiation exposure in pregnant patients, the total radioactive dose may be decreased or the ventilation phase omitted. Computed tomography with radiocontrast can alternatively be performed, although this can result in a greater radiation dose to the patient. If breastfeeding, patient must be counselled to refrain from this activity for approximately 24 hours.
Read more about this topic: Ventilation/perfusion Scan
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