コーンビームによる頭部単純撮影用コンピュータ支援学習プログラムの開発

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タイトル別名
  • Development of Computer Assisted Learning Program Using Cone Beam Projection for Head Radiography
  • コーンビーム ニ ヨル トウブ タンジュン サツエイヨウ コンピュータ シエン ガクシュウ プログラム ノ カイハツ

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抄録

We present a computer assisted learning (CAL) program to simulate head radiography. The program provides cone beam projections of a target volume, simulating three-dimensional computed tomography (CT) of a head phantom. The generated image is 512×512×512 pixels with each pixel 0.6 mm on a side. The imaging geometry, such as X-ray tube orientation and phantom orientation, can be varied. The graphical user interface (GUI) of the CAL program allows the study of the effects of varying the imaging geometry; each simulated projection image is shown quickly in an adjoining window. Simulated images with an assigned geometry were compared with the image obtained using the standard geometry in clinical use. The accuracy of the simulated image was verified through comparison with the image acquired using radiography of the head phantom, subsequently processed with a computed radiography system (CR image). Based on correlation coefficient analysis and visual assessment, it was concluded that the CAL program can satisfactorily simulate the CR image. Therefore, it should be useful for the training of head radiography.

収録刊行物

  • 医学物理

    医学物理 32 (1), 2-11, 2012

    公益社団法人　 日本医学物理学会

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