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首页> 外文期刊>Acta Radiologica >Ultra-low dose dual-source high-pitch computed tomography of the paranasal sinus: Diagnostic sensitivity and radiation dose
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Ultra-low dose dual-source high-pitch computed tomography of the paranasal sinus: Diagnostic sensitivity and radiation dose

机译：鼻旁窦的超低剂量双源高螺距计算机断层扫描：诊断敏感性和放射剂量

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摘要

Background: Today's gold standard for diagnostic imaging of inflammatory diseases of the paranasal sinus is computed tomography (CT). Purpose: To evaluate diagnostic sensitivity and radiation dose of an ultra-low dose dual-source CT technique. Material and Methods: Paranasal sinuses of 14 cadaveric heads were independently evaluated by two readers using a modern dual-source CT with lowest reasonable dosage in high-pitch mode (100 kV, 10 mAs, collimation 0.6 mm, pitch value 3.0). Additionally the head part of an anthropomorphic Alderson-Rando phantom was equipped with thermoluminiscent detectors to measure radiation exposure to the eye lenses and thyroid gland. Results: Diagnostic accuracy regarding sinusoidal fluid, nasal septum deviation, and mucosal swelling was 100%. Mastoid fluid was detected in 76% and 92%, respectively. In the phantom study, average measured eye lens dosage was 0.64 mGy; radiation exposure of the thyroid gland was 0.085 mGy. Conclusion: Regarding evaluation of inflammatory diseases of the paranasal sinus this study indicates sufficient accuracy of the proposed CT protocol at a very low dosage level.
机译：背景：当今用于诊断鼻旁窦炎性疾病的金标准是计算机断层扫描（CT）。目的：评价超低剂量双源CT技术的诊断敏感性和放射剂量。材料和方法：两个读者使用现代双源CT在高音高模式（100 kV，10 mAs，准直0.6 mm，音高值为3.0）下以最低合理剂量独立评估14个尸体头的鼻旁窦。此外，拟人化的Alderson-Rando体模的头部配备了热致发光探测器，以测量暴露于眼镜片和甲状腺的辐射。结果：关于正弦液，鼻中隔偏曲和粘膜肿胀的诊断准确性为100％。乳腺液的检出率分别为76％和92％。在幻像研究中，测得的平均眼镜片剂量为0.64 mGy;甲状腺的放射线暴露为0.085 mGy。结论：关于鼻旁窦炎性疾病的评估，该研究表明所建议的CT方案在非常低的剂量水平下具有足够的准确性。

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