[Investigation of simple Wiener spectrum measurement in medical imaging systems].
This paper is to approach a simple method for Wiener spectrum measurement in different medial imaging systems. The program written in VC++6.0 can be used to obtain the density datum as discrete signals by scanning films on AGFA DUOSCAN T2000XL scanner, then WS values can be calculated by using fast Fourier transform. The method is applied to different x-ray photographs and the WS values are consistent with the known datum from MD-100 micro-densimeter. The method can make automatic data collection and procedural calculation, showing the characteristics of its simplicity and high speed.
Wang
Zhi-Kang
ZK
Department of Radiology, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009. akang511@yahoo.com
Zhao
Song
S
Zhang
Jun-Yi
JY
Zhang
Wei-Min
WM
D000465:Algorithms; D005583:Fourier Analysis; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation / Q000379:methods; D011786:Quality Control; D011856:Radiographic Image Enhancement / Q000295:instrumentation / Q000379:methods; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods*; D011859:Radiography; D011873:Radiology Information Systems / Q000592:standards*; D014962:X-Ray Film