A Rotatable Quality Control Phantom for Evaluating the Performance of Flat Panel Detectors in Imaging Moving Objects.
As the use of diagnostic X-ray equipment with flat panel detectors (FPDs) has increased, so has the importance of proper management of FPD systems. To ensure quality control (QC) of FPD system, an easy method for evaluating FPD imaging performance for both stationary and moving objects is required. Until now, simple rotatable QC phantoms have not been available for the easy evaluation of the performance (spatial resolution and dynamic range) of FPD in imaging moving objects. We developed a QC phantom for this purpose. It consists of three thicknesses of copper and a rotatable test pattern of piano wires of various diameters. Initial tests confirmed its stable performance. Our moving phantom is very useful for QC of FPD images of moving objects because it enables visual evaluation of image performance (spatial resolution and dynamic range) easily.
Department of Radiological Technology, Graduate School of Medicine, Tohoku University, 2-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575, Japan.|Department of Radiology, Sendai Kousei Hospital, Hirosemachi 4-5, Aobaku, Sendai, 980-0873, Miyagi, Japan.
Yoshihiro
Y
Haga
Department of Radiological Technology, Graduate School of Medicine, Tohoku University, 2-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575, Japan. chida@med.tohoku.ac.jp.|Division of Disaster Medical Science, International Research Institute of Disaster Science, Tohoku University, 6-6-4, Aoba, Sendai, 980-8579, Japan. chida@med.tohoku.ac.jp.
Koichi
K
Chida
Department of Radiological Technology, Graduate School of Medicine, Tohoku University, 2-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575, Japan.|Division of Disaster Medical Science, International Research Institute of Disaster Science, Tohoku University, 6-6-4, Aoba, Sendai, 980-8579, Japan.
Yohei
Y
Inaba
Department of Radiology, Sendai Kousei Hospital, Hirosemachi 4-5, Aobaku, Sendai, 980-0873, Miyagi, Japan.
Yuji
Y
Kaga
Department of Radiology, Sendai Kousei Hospital, Hirosemachi 4-5, Aobaku, Sendai, 980-0873, Miyagi, Japan.
Taiichiro
T
Meguro
Department of Radiological Technology, Graduate School of Medicine, Tohoku University, 2-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575, Japan.
Masayuki
M
Zuguchi
D009038:Motion; D019047:Phantoms, Imaging; D011786:Quality Control; D011856:Radiographic Image Enhancement / Q000295:instrumentation* / Q000592:standards; D014963:X-Ray Intensifying Screens / Q000592:standards*
Angiography; Flat panel detector (FPD); Fluoroscopy; Moving phantom; Quality control (QC)