Thevi Rajendran Pushpa, Krishnapillai Vijayalakshmi, Tamanang Sulaiman, Kumari Chelliah Kanaga
Diagnostic Imaging and Radiotherapy Programme, Faculty of Allied Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia.
Malays J Med Sci. 2012 Jan;19(1):52-9.
Digital mammography is slowly replacing screen film mammography. In digital mammography, 2 methods are available in acquiring images: digital storage phosphor plate and full-field digital mammography. The aim of this study was to compare the image quality acquired from the 2 methods of digital mammography in the detection of breast cancer.
The study took place at the National Cancer Society, Kuala Lumpur, and followed 150 asymptomatic women for the duration of 1 year. Participating women gave informed consent and were exposed to 4 views from each system. Two radiologists independently evaluated the printed images based on the image quality criteria in mammography. McNemar's test was used to compare the image quality criteria between the systems.
The agreement between the radiologists for the digital storage phosphor plate was к = 0.551 and for full-field digital mammography was к = 0.523. Full-field digital mammography was significantly better compared with the digital storage phosphor plate in right and left mediolateral oblique views (P < 0.05) in the detection of microcalcifications, which are early signs of breast cancer. However, both systems were comparable in all other aspects of image quality.
Digital mammography is a useful screening tool for the detection of early breast cancer and ensures better prognosis and quality of life.
数字乳腺摄影正逐渐取代屏片乳腺摄影。在数字乳腺摄影中，获取图像有两种方法：数字存储磷光板和全场数字乳腺摄影。本研究的目的是比较这两种数字乳腺摄影方法在乳腺癌检测中所获取图像的质量。
该研究在吉隆坡的国家癌症协会进行，对150名无症状女性进行了为期1年的跟踪。参与研究的女性均签署了知情同意书，并接受了来自每个系统的4个投照位检查。两名放射科医生根据乳腺摄影的图像质量标准对打印图像进行独立评估。采用McNemar检验比较各系统之间的图像质量标准。
放射科医生对数字存储磷光板的一致性系数к = 0.551，对全场数字乳腺摄影的一致性系数к = 0.523。在检测作为乳腺癌早期征象的微钙化方面，全场数字乳腺摄影在左右中外侧斜位投照中明显优于数字存储磷光板（P < 0.05）。然而，在图像质量的所有其他方面，两种系统相当。
数字乳腺摄影是检测早期乳腺癌的一种有用的筛查工具，可确保更好的预后和生活质量。
