التفاصيل البيبلوغرافية
| العنوان: |
Fast Data Acquisition in Heavy Ion CT Using Intensifying Screen—EMCCD Camera System With Beam Intensity Monitor. |
| المؤلفون: |
Muraishi, Hiroshi, Abe, Shinji, Satoh, Hitoshi, Hara, Hidetake, Mogaki, Tatsuya, Hara, Satoshi, Miyake, Shoko, Watanabe, Yusuke, Koba, Yusuke |
| المصدر: |
IEEE Transactions on Nuclear Science; Oct2012 Part 1, Vol. 59 Issue 5, p1934-1939, 6p |
| مصطلحات موضوعية: |
TOMOGRAPHY, CONVERSION tables, DATA acquisition systems, ELECTRON distribution, HEAVY ions, ION bombardment |
| مستخلص: |
We investigated the feasibility of fast data acquisition in heavy ion CT (IonCT) technique with an X-ray intensifying screen-charged coupled device (CCD) camera system. This technique is based on measuring the residual range distribution of heavy ions after passing through an object. We took a large number of images with a CCD camera for one projection by changing the range shifter (RS) thickness to obtain a characteristic curve similar to a Bragg curve and then to estimate the relative residual range. We used a high quality Electron Multiplying CCD (EMCCD) camera, which drastically reduced data acquisition time. We also used a parallel-plate ionization chamber upstream of an object to monitor the time variation in heavy ion beam intensity from a synchrotron accelerator and to perform beam intensity correction for all EMCCD images. Experiments were conducted using a broad beam of ^12 C, which was generated by spreading out the pencil beam accelerated up to 400 MeV/u by the Heavy Ion Medical Accelerator, in Chiba (HIMAC) at the National Institute of Radiological Sciences, with a scatterer. We demonstrated that a fast CT data acquisition, 14 min for 256 projections, is possible for an electron density phantom, consisting of six rods with a relative electron density resolution of 0.017, using the proposed technique with HIMAC. [ABSTRACT FROM PUBLISHER] |
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| قاعدة البيانات: |
Complementary Index |
