Four-Year Cumulative Radiation Exposure in Patients Undergoing Computed Tomography Angiography for Suspected Pulmonary Embolism

<table>Number of CT scans received by subjects over four years inclusive of the initial pulmonary CTA for suspected PE. Mean effective radiation dose is displayed over each subject group.</table>

Radiology Research and Practice

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Figure 1

Figure 1: Four-Year Cumulative Radiation Exposure in Patients Undergoing Computed Tomography Angiography for Suspected Pulmonary Embolism 