فهرست نشریات علمی دسترسی آزاد ایران

Background: Using a low volume of contrast medium and tube voltage may enhance the opacification of pulmonary arteries and thrombus detection without decreasing the image quality. In addition, this protocol can also ensure that exposure of the patient to the contrast medium and radiation dose may be significantly reduced. Objectives: The purpose of this study was to investigate the efficiency of low tube voltage and low dose iodine-based contrast medium in computed tomography pulmonary angiography (CTPA) and optimize its use in the diagnosis of pulmonary thromboembolism (PTE). Results: PTE was detected in twenty-one patients (21%) in both groups. Total mean attenuation values for pulmonary arteries were significantly higher in group A than in group B (532.7 ± 243 HU vs. 380.6 ± 232 HU respectively, P < 0.001). Total dose length product (DLP) (76.5 ± 17.3 mGy.cm vs. 162.1 ± 31.3 mGy.cm, P < 0.001) and effective dose values (1.2 ± 0.2 mSv vs. 2.4 ± 0.2 mSv, P < 0.001) were significantly lower in group A compared to group B. Conclusion: CTPA may be obtained using an imaging protocol with low kV and reduced volume of contrast medium in the diagnosis of PTE.