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Improved motion compensation in 3D-CT using respiratory-correlated segment reconstruction: Diagnostic and radiotherapy applications
https://repo.qst.go.jp/records/44816
https://repo.qst.go.jp/records/448166bb4b52d-e842-4882-a3c3-35de255f6beb
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2007-03-31 | |||||
| タイトル | ||||||
| タイトル | Improved motion compensation in 3D-CT using respiratory-correlated segment reconstruction: Diagnostic and radiotherapy applications | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Mori, Shinichiro
× Mori, Shinichiro× Endo, Masahiro× Kohno, Ryosuke× Minohara, Shinichi× 森 慎一郎× 遠藤 真広× 河野 良介× 蓑原 伸一 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Conventional respiratory-gated CT and four-dimentional CT(4DCT) are disadvantaged by their low temporal resolution, which results in the inclusion of anatomic motion-induced artefacts. These represent a significant source of error both in radiotherapy treatment planning for the thorax and upper abdomen and in diagnostic procedures. In particular, temporal resolution and image quality are vitally important to accurate diagnosis and the minimization of planning target volume margin due to respiratory motion. To improve both temporal resolution and signal-to-noise ratio (SNR), we developed a respiratory-correlated segment reconstruction method (RS) and adapted it to the Feldkamp-Davis-Kress algorithm (FDK) with a 256 multidetector row CT (256MDCT). The 256MDCT scans appromimately 100 mm in the craniocaudal direction with a 0.5 mm slice thickness in one rotation. Data acquisition for the RS-FDK relies on the assistance of a respiratory senssing system operating in cine scan mode (continuous axial scan with the table stationary). We evaluated the RS-FDK for volume accuracy and image noise in aphotom study with the 256MDCT and compared results with those for a full scan (FS-FDK), which is usually employed in conventional 4DCT and in half scan (HS-FDK). Results showed that the RS-FDK. In a subsequent animal study, we demonstrated a practical sorting process for projection subsequeent animal asudy, we demonstrated a practical sorting process for projection data which was unaffected by variations in respiratory period, and found that the RS-FDK gave the clearest visualization among the three algorithms of the margins of the liver and pulmonary vessels. In summary, the RS-FDK algorithm provides multi-phase images with highere temporal resolutin and better SNR. This method should prove useful when combined with new radiotherapeutic and diagnostic techniques. | |||||
| 書誌情報 |
British Journal of Radiology 巻 79, 号 945, p. 745-755, 発行日 2006-09 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0007-1285 | |||||
