PDF(Pubmed)
Abstract：
BACKGROUND: Computed tomography (CT) has become the primary imaging modality for visualization of the paranasal sinuses. In this retrospective, single center patient study the radiation dose development in the past 12 years in CT imaging of the paranasal sinuses was assessed.
METHODS: The computed tomography dose index (CTDIVol) and dose length product (DLP) of a total of 1246 patients (average age: 41 ± 18 years, 361 females, 885 males) were evaluated, who received imaging of the paranasal sinuses either for chronic sinusitis diagnostic, preoperatively or posttraumatically. Scans were performed on three different CT scanners (Somatom Definition AS, Somatom Definition AS+, Somatom Force, all from Siemens Healthineers) and on one CBCT (Morita) ranging from 2010 to 2022. Reconstruction techniques were filtered back projection and three generations of iterative reconstruction (IRIS, SAFIRE, ADMIRE, all from Siemens Healthineers). Group comparisons were performed using either parametrical (ANOVA) or non-parametrical tests (Kruskal-Wallis Test), where applicable.
RESULTS: Over the past 12 years, there was a 73%, 54%, and 66% CTDIVol reduction and a significant (p < 0.001) 72%, 33%, and 67% DLP reduction in assessing the paranasal sinuses for chronic sinusitis, preoperatively and posttraumatically, respectively.
CONCLUSIONS: Technological developments in CT imaging, both hardware and software based, have led to a significant reduction in dose exposure in recent years. Particularly in imaging of the paranasal sinuses, the reduction of radiation exposure is of great interest due to the often young patient age and radiation-sensitive organs in the area of radiation exposure.
METHODS: The computed tomography dose index (CTDIVol) and dose length product (DLP) of a total of 1246 patients (average age: 41 ± 18 years, 361 females, 885 males) were evaluated, who received imaging of the paranasal sinuses either for chronic sinusitis diagnostic, preoperatively or posttraumatically. Scans were performed on three different CT scanners (Somatom Definition AS, Somatom Definition AS+, Somatom Force, all from Siemens Healthineers) and on one CBCT (Morita) ranging from 2010 to 2022. Reconstruction techniques were filtered back projection and three generations of iterative reconstruction (IRIS, SAFIRE, ADMIRE, all from Siemens Healthineers). Group comparisons were performed using either parametrical (ANOVA) or non-parametrical tests (Kruskal-Wallis Test), where applicable.
RESULTS: Over the past 12 years, there was a 73%, 54%, and 66% CTDIVol reduction and a significant (p < 0.001) 72%, 33%, and 67% DLP reduction in assessing the paranasal sinuses for chronic sinusitis, preoperatively and posttraumatically, respectively.
CONCLUSIONS: Technological developments in CT imaging, both hardware and software based, have led to a significant reduction in dose exposure in recent years. Particularly in imaging of the paranasal sinuses, the reduction of radiation exposure is of great interest due to the often young patient age and radiation-sensitive organs in the area of radiation exposure.
摘要：
背景：计算机断层扫描（CT）已成为鼻旁窦可视化的主要成像方式。在这次回顾中,单中心患者研究评估了过去12年鼻旁窦CT成像中的辐射剂量发展。
方法：总共1246例患者的计算机断层扫描剂量指数（CTDIVol）和剂量长度乘积（DLP）（平均年龄：41±18岁，361名女性，885名男性）进行了评估，谁接受了鼻旁窦的成像或慢性鼻窦炎的诊断，术前或创伤后。扫描是在三种不同的CT扫描仪上进行的(Somatom定义AS，Somatom定义AS+,Somatom部队,全部来自西门子Healthineers）和2010年至2022年的CBCT（Morita）。重建技术有滤波反投影和三代迭代重建(IRIS，SAFIRE,ADMIRE,全部来自西门子Healthineers）。分组比较采用参数检验(ANOVA)或非参数检验(Kruskal-Wallis检验),如适用。
结果：在过去的12年里，有73%，54%,CTDIVol减少66%，显著(p<0.001)72%，33%,在评估慢性鼻窦炎的鼻旁窦时，DLP减少了67％，术前和创伤后，分别。
结论：CT成像技术的发展，基于硬件和软件，导致近年来剂量暴露的显著减少。特别是在鼻旁窦的成像中，由于患者年龄通常较小，并且在辐射暴露区域对辐射敏感的器官，因此减少辐射暴露引起了极大的兴趣。
方法：总共1246例患者的计算机断层扫描剂量指数（CTDIVol）和剂量长度乘积（DLP）（平均年龄：41±18岁，361名女性，885名男性）进行了评估，谁接受了鼻旁窦的成像或慢性鼻窦炎的诊断，术前或创伤后。扫描是在三种不同的CT扫描仪上进行的(Somatom定义AS，Somatom定义AS+,Somatom部队,全部来自西门子Healthineers）和2010年至2022年的CBCT（Morita）。重建技术有滤波反投影和三代迭代重建(IRIS，SAFIRE,ADMIRE,全部来自西门子Healthineers）。分组比较采用参数检验(ANOVA)或非参数检验(Kruskal-Wallis检验),如适用。
结果：在过去的12年里，有73%，54%,CTDIVol减少66%，显著(p<0.001)72%，33%,在评估慢性鼻窦炎的鼻旁窦时，DLP减少了67％，术前和创伤后，分别。
结论：CT成像技术的发展，基于硬件和软件，导致近年来剂量暴露的显著减少。特别是在鼻旁窦的成像中，由于患者年龄通常较小，并且在辐射暴露区域对辐射敏感的器官，因此减少辐射暴露引起了极大的兴趣。
