Aloufi Khalid M, Gameraddin Moawia, Albdrani Ahmad S, Alsani Mohammed M, Alshoabi Sultan A
Diagnostic Radiology Technology, College of Applied Medical Sciences, Taibah University, Madinah, SAU.
Cureus. 2024 Sep 2;16(9):e68489. doi: 10.7759/cureus.68489. eCollection 2024 Sep.
Restricting the irradiated volume can reduce X-ray scattering incidents on the image receptor. Proper X-ray collimation during medical imaging reduces a patient's dose while improving image quality. Even though the patient radiation dose due to chest X-ray imaging is low, the 'as low as reasonably achievable' (ALARA) principle should be satisfied, especially for young patients.
To evaluate the accuracy of collimation in digital chest radiography.
Ninety-eight chest radiographs were studied retrospectively from February 2021 to December 2021. Chest images were collected from three main centers in the Madinah region of Saudi Arabia. The ratio of the field of interest area to the field of view (FOV) was measured and calculated to determine the accuracy of X-ray beam collimation.
Out of 98 chest radiographs enrolled in the study, 87.8% (n=80) were adequately collimated, while 12.2% (n=18) were rejected due to inadequate collimation. The ratio of the field of interest collimated area of chest radiographs was 0.547, which indicated an acceptable value. Among the three centers, Center 2 showed higher, significant, adequate collimation than Center 1 (P<0.001) and Center 3 (P=0.007). There was a significant gender difference in collimation levels as the level of collimation of female chest radiographs is inferior to that of males (P>0.001).
The collimation of chest radiographs among the three centers was adequate. Based on the study findings, the X-ray beam collimation was sufficient, indicating good optimization and no unnecessary radiation exposure to patients and staff. The collimation of chest radiographs in females was significantly inferior to that of males.
限制照射体积可减少图像接收器上的X射线散射事件。医学成像过程中进行适当的X射线准直可降低患者剂量，同时提高图像质量。尽管胸部X光成像导致的患者辐射剂量较低，但仍应遵循“尽可能合理低”（ALARA）原则，尤其是对于年轻患者。
评估数字胸部X线摄影中准直的准确性。
回顾性研究了2021年2月至2021年12月期间的98例胸部X光片。胸部图像来自沙特阿拉伯麦地那地区的三个主要中心。测量并计算感兴趣区域与视野（FOV）的比例，以确定X射线束准直的准确性。
在纳入研究的98例胸部X光片中，87.8%（n = 80）准直充分，而12.2%（n = 18）因准直不足被拒收。胸部X光片感兴趣区域准直面积的比例为0.547，表明该值可接受。在三个中心中，中心2的准直水平高于中心1（P < 0.001）和中心3（P = 0.007），差异有统计学意义。准直水平存在显著的性别差异，女性胸部X光片的准直水平低于男性（P > 0.001）。
三个中心的胸部X光片准直情况良好。基于研究结果，X射线束准直充分，表明优化良好，患者和工作人员未受到不必要的辐射暴露。女性胸部X光片的准直明显低于男性。
