Ruiz Débora Costa, Fontenele Rocharles Cavalcante, Farias-Gomes Amanda, Oliveira Matheus L, Freitas Deborah Queiroz, Haiter-Neto Francisco
Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil.
OMFS IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, KU Leuven, Leuven, Belgium.
Imaging Sci Dent. 2025 Mar;55(1):22-27. doi: 10.5624/isd.20240112. Epub 2024 Dec 6.
This study was conducted to compare the objective image quality of radiographs acquired with a handheld X-ray device to those obtained with a wall-mounted X-ray device.
Brightness, noise, uniformity, and contrast were evaluated. To assess the first 3 parameters, radiographs of an acrylic block were acquired with an unused photostimulable phosphor (PSP) plate from the VistaScan system (Mini Easy, Dürr Dental, Bietigheim-Bissingen, Germany). Initially, 6 radiographs were taken with a Focus X-ray wall-mounted device (Instrumentarium, Tuusula, Finland) operating at 60 kVp, 7 mA, and 0.125 s. Another 6 radiographs were captured using an Eagle handheld X-ray device (Alliage, São Paulo, Brazil) at 60 kVp, 2.5 mA, and 0.35 s. The means and standard deviations of the gray values for all radiographs were calculated using ImageJ (National Institutes of Health, Bethesda, MD, USA). For contrast assessment, radiographs of an aluminum step wedge were obtained using the same PSP plate, X-ray devices, and acquisition parameters. The percentage of contrast variation was determined. The impacts of the devices on image quality were compared using the Student -test, with a significance level of 5% (<0.05).
Compared with the wall-mounted device, the handheld device produced radiographs with higher brightness and noise, as indicated by mean values of 6.57 (0.49) and 3.49 (0.02), respectively. Furthermore, it demonstrated lower uniformity and contrast, with respective means of 3.75 (0.02) and 35.48 (0.09) (<0.05).
Radiographs obtained using a handheld X-ray device exhibit lower theoretical image quality than those acquired with a wall-mounted device.
本研究旨在比较使用手持式X射线设备获取的X线片与使用壁挂式X射线设备获取的X线片的客观图像质量。
评估了亮度、噪声、均匀性和对比度。为评估前三个参数，使用来自VistaScan系统（Mini Easy，德国比蒂希海姆-比辛根的迪尔牙科公司）的未使用的光激励荧光板（PSP）获取丙烯酸块的X线片。最初，使用Focus X射线壁挂式设备（芬兰图苏拉的Instrumentarium公司）在60 kVp、7 mA和0.125 s的条件下拍摄6张X线片。另外6张X线片是使用Eagle手持式X射线设备（巴西圣保罗的Alliage公司）在60 kVp、2.5 mA和0.35 s的条件下拍摄的。使用ImageJ（美国国立卫生研究院，马里兰州贝塞斯达）计算所有X线片灰度值的均值和标准差。为进行对比度评估，使用相同的PSP板、X射线设备和采集参数获取铝阶梯楔形块的X线片。确定对比度变化的百分比。使用Student检验比较设备对图像质量的影响，显著性水平为5%（<0.05）。
与壁挂式设备相比，手持式设备产生的X线片亮度和噪声更高，均值分别为6.57（0.49）和3.49（0.02）。此外，其均匀性和对比度较低，均值分别为3.75（0.02）和35.48（0.09）（<0.05）。
使用手持式X射线设备获得的X线片在理论上的图像质量低于使用壁挂式设备获得的X线片。
Zotero 插件
