| Presentation | 2016-01-19 [Poster Presentation] Fractal analysis of an Advanced Modeled Iterative Reconstruction Algorithm for the evaluation of complex structure Wakiko Tani, Hideaki Kawamitsu, Ryuhei Fujimoto, Tomoki Maebayashi, Erina Suehiro, Rika Matoba, Toshinori Sekitani, Kiyosumi Kagawa, Noriyuki Negi, Satoru Takahashi, Toshihide Itoh, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Iterative reconstruction (IR) technique can allow a radiation dose reduction without unfavorable objective effects on image quality. Non-linear processing applied to IR may sometimes cause unwanted image appearance by increasing its strength. We examined whether it is possible to subjective evaluation of the IR image using fractal analysis. A bundle of five acryl rods inserted in the center of a circular phantom filled with various concentration of diluted contrast medium was scanned at a various radiation dose (CTDIvol of 1.8 to 14.4 mGy) with different reconstruction algorithms such as FBP and IR with strength 1 to 5 at 120 kV. Images were analyzed to calculate fractal dimension (FD) of the phantom using a box-counting methods for binary images. The FD decreased with increasing radiation dose, IR strength and contrast differences. The FD of FBP images at 100% radiation dose was almost same as that of IR strength 3 at a half radiation dose. FD that represents complexity of contour would be applied as a potential indicator for the quantitative assessment of iterative reconstruction. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Fractal analysis / Iterative reconstruction / IR / CT |
| Paper # | MI2015-81 |
| Date of Issue | 2016-01-12 (MI) |
| Conference Information | |
| Committee | MI |
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| Conference Date | 2016/1/19(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Bunka Tenbusu Kan |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | General topics in medical imaging |
| Chair | Yoshitaka Masutani(Hiroshima City Univ.) |
| Vice Chair | Yoshiki Kawata(Tokushima Univ.) / Yuichi Kimura(Kinki Univ.) |
| Secretary | Yoshiki Kawata(Aichi Inst. of Tech.) / Yuichi Kimura(Nagoya Inst. of Tech.) |
| Assistant | Ryo Haraguchi(NCVC) / Yasushi Hirano(Yamaguchi Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Medical Imaging |
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| Language | ENG-JTITLE |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Poster Presentation] Fractal analysis of an Advanced Modeled Iterative Reconstruction Algorithm for the evaluation of complex structure |
| Sub Title (in English) | |
| Keyword(1) | Fractal analysis |
| Keyword(2) | Iterative reconstruction |
| Keyword(3) | IR |
| Keyword(4) | CT |
| 1st Author's Name | Wakiko Tani |
| 1st Author's Affiliation | Kobe University Hospital(Kobe Univ Hospital) |
| 2nd Author's Name | Hideaki Kawamitsu |
| 2nd Author's Affiliation | Kobe University Hospital(Kobe Univ Hospital) |
| 3rd Author's Name | Ryuhei Fujimoto |
| 3rd Author's Affiliation | Kobe University Hospital(Kobe Univ Hospital) |
| 4th Author's Name | Tomoki Maebayashi |
| 4th Author's Affiliation | Kobe University Hospital(Kobe Univ Hospital) |
| 5th Author's Name | Erina Suehiro |
| 5th Author's Affiliation | Kobe University Hospital(Kobe Univ Hospital) |
| 6th Author's Name | Rika Matoba |
| 6th Author's Affiliation | Kobe University Hospital(Kobe Univ Hospital) |
| 7th Author's Name | Toshinori Sekitani |
| 7th Author's Affiliation | Kobe University Hospital(Kobe Univ Hospital) |
| 8th Author's Name | Kiyosumi Kagawa |
| 8th Author's Affiliation | Kobe University Hospital(Kobe Univ Hospital) |
| 9th Author's Name | Noriyuki Negi |
| 9th Author's Affiliation | Kobe University Hospital(Kobe Univ Hospital) |
| 10th Author's Name | Satoru Takahashi |
| 10th Author's Affiliation | Kobe University Hospital(Kobe Univ Hospital) |
| 11th Author's Name | Toshihide Itoh |
| 11th Author's Affiliation | Siemens Healthcare(Siemens Healthcare) |
| Date | 2016-01-19 |
| Paper # | MI2015-81 |
| Volume (vol) | vol.115 |
| Number (no) | MI-401 |
| Page | pp.pp.45-49(MI), |
| #Pages | 5 |
| Date of Issue | 2016-01-12 (MI) |