Laboratory of Medical Physics and Biophysics, Institut Teknologi Sepuluh Nopember, Kampus ITS, Sukolilo, Surabaya, 60111, East Java, Indonesia.
Department of Radiodiagnostic, "Dharmais" National Cancer Center Hospital, Jakarta, Indonesia.
Phys Eng Sci Med. 2023 Dec;46(4):1693-1701. doi: 10.1007/s13246-023-01330-8. Epub 2023 Sep 18.
This study aimed to quantitatively assess the radiation dose using XR-QA2 and the image quality of the dual-energy subtraction mammography technique on an in-house phantom. The analysis was carried out to investigate the effect of targets/filters on dose value and image quality using an in-house phantom made of PLA + as an object representing compressed breasts. All irradiation parameters were performed in the craniocaudal position with manual mode. Mean glandular dose (MGD) was recorded, followed by the calculation of the signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR), and modulation transfer function (MTF) for image quality assessment parameters. The results showed that the image quality was accepted at dose levels within the IAEA and BAPETEN tolerance limit for 60 mm equivalent compressed breast using dual-energy mammography. Furthermore, the target/filter (W/Rh) reduced the dose by 1.03 mGy compared to the Mo/Mo and Mo/Rh with an enhancement in image quality. This indicated that the target/filter (W/Rh) combination was optimal due to the image quality improvement obtained with lower MGD.
本研究旨在使用 XR-QA2 定量评估辐射剂量，并对内部体模上的双能减影乳腺摄影技术的图像质量进行评估。该分析旨在研究目标/滤波器对剂量值和图像质量的影响，使用 PLA+制成的内部体模模拟压缩乳房。所有辐射参数均在头尾位手动模式下进行。记录平均腺体剂量（MGD），然后计算信噪比（SNR）、对比噪声比（CNR）和调制传递函数（MTF）以评估图像质量参数。结果表明，使用双能乳腺摄影，在 IAEA 和 BAPETEN 可接受的 60 毫米等效压缩乳房剂量水平内，图像质量可被接受。此外，与 Mo/Mo 和 Mo/Rh 相比，目标/滤波器（W/Rh）降低了 1.03 mGy 的剂量，同时提高了图像质量。这表明，由于获得了较低的 MGD，因此目标/滤波器（W/Rh）组合是最佳的。
