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Iranian Journal of Medical Physics، جلد ۱۵، شماره ۴، صفحات ۲۳۷-۲۴۲
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عنوان انگلیسی Comparison of Image Quality of Low Voltage 64-slice Multidetector CT Angiography with the Standard Condition in Patients Suspected of Pulmonary Embolism
چکیده انگلیسی مقاله Introduction: Reduction of peak kilovoltage (kV) setting has been a useful approach to d creating radiation dose; however, it may have varied effects on noise and the accuracy of diagnosis. Thus, we compared image quality between low (80 kV) and standard kilovoltage (100 kV) protocols. Material and Methods: This triple blind non-randomized parallel quasi-experimental study was conducted on 140 cases of questionable pulmonary embolism. Results: Image quality was twice as high as the standard protocol in the 80-kV group (odds ratio=2.08). Main, segmental, and subsegmental arteries showed significantly higher vascular enhancement (P< 0.001) in the 80-kV group. Similarly, the mean number of measurable segmental arteries was significantly greater in the 80-kV group relative to the standard group. On the other hand, the mean of image noise was significantly higher in the 80-kV group in comparison with the 100-kV group (mean: 68.4 vs. 43.1; P< 0.001). Finally, the mean of radiation dose received in the 80-kV group was significantly lower than that in the 100-kV group (mean: 0.94 vs. 2.43 mSv; P< 0.001). Conclusion: Lower radiation dose received and higher image quality, but worse image noise, in the 80-kV group compared to the 100-kV group present acceptable evidence in support of reduction of voltage in cases with the suspicion of pulmonary embolism. In these patients, therefore, it is recommended as a good strategy to be adopted in computed tomography angiography.
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نویسندگان مقاله | Mohammad Davoodi
MD, Department of Radiology, Ahvaz Jondishapur University of Medical Sciences, Khuzestan, Iran


| Soudabeh Belash-Abadi
MD, Ahvaz Jondishapur University of Medical Sciences, Khuzestan, Iran


| Seyed Hossein Aalaei-Andabili
MD, Nikan Health Researchers Institute, Tehran, Iran


| Ali Kabir
MD, PhD, Minimally Invasive Surgery Research Center, Iran University of Medical Sciences, Tehran, Iran.
نشانی اینترنتی http://ijmp.mums.ac.ir/article_10553.html
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Original Paper
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