《英文msh詞典》Imaging Phantom
[入口詞] Imaging Phantom
[主題詞] Phantoms,Imaging
[英文釋義] Devices or objects in various imaging techniques used to visualize or enhance visualization by simulating conditions encountered in the procedure. Phantoms are used very often in procedures employing or measuring x-irradiation or radioactive material to evaluate performance. Phantoms often have properties similar to human tissue. Water demonstrates absorbing properties similar to normal tissue,hence water-filled phantoms are used to map radiation levels. Phantoms are used also as teaching aids to simulate real conditions with x-ray or ultrasonic machines. (From Iturralde,Dictionary and Handbook of Nuclear Medicine and Clinical Imaging,1990)