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Reducing computed tomography radiation dose in diagnosing pulmonary embolism
Tamader Y Al-Rammah1, Amani Alohaly2, Kamal Albatsh3
1Tamader Y. AL-Rammah, Department of Radiological Sciences, College of Applied Medical Sciences, King Saud University, Saudi Arabia.
Background And Objective:
Computed tomography angiography plays a major role in the diagnosis of pulmonary embolism. Radiation dose associated with it is a major concern; therefore it is important to optimize protocols and techniques to ensure minimum radiation dose.
Methods:
The study compares two protocols i. Conventional Timing Bolus CT protocol and Delayed Timing Bolus protocol used to assist suspected pulmonary embolism patients.
Results:
A significant reduction in the average effective dose (39%) was noticed when using the delayed timing bolus protocol.
Conclusion:
Delayed timing bolus protocol has a good impact on radiation dose without affecting the value of the computed tomography angiography study.
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