Influence of Rotation Increments on Imaging Performance for a Rotatory Dual-Head PET System.
For a rotatory dual-head positron emission tomography (PET) system, how to determine the rotation increments is an open problem. In this study, we simulated the characteristics of a rotatory dual-head PET system. The influences of different rotation increments were compared and analyzed. Based on th...
| Publicado en: | BioMed Research International Vol. 2017; pp. 1 - 12 |
|---|---|
| Autores principales: | , , , , , , , |
| Formato: | algorithm equations & formulas pictorial research tables/charts Journal Article |
| Publicado: |
Wiley-Blackwell
1/5/2017
|
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=120574908&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 120574908 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 23146133 FT2T jtl: BioMed Research International issn: 23146133 maglogo: N pubinfo: dt: 1/5/2017 vid: 2017 pid: 480 pub: Wiley-Blackwell place: Malden, Massachusetts artinfo: ui: 120574908 120574908 120574908 10.1155/2017/8615086 120574908 ppf: 1 ppct: 11 formats: fmt: @attributes: type: P tig: atl: Influence of Rotation Increments on Imaging Performance for a Rotatory Dual-Head PET System. aug: au: Meng, Fanzhen Cao, Xu Cao, Xuezhou Wang, Jianxun Li, Liang Chen, Xueli Zhu, Shouping Liang, Jimin affil: Engineering Research Center of Molecular and Neuro Imaging of Ministry of Education, School of Life Science and Technology, Xidian University, Xi’an, Shaanxi 710071, China sug: subj: Rotation Tomography, Emission-Computed Methods Tomography, Emission-Computed Evaluation Quality Assessment Simulations Tomography, Emission-Computed Equipment and Supplies Phantoms, Imaging Validity Funding Source Descriptive Statistics Data Analysis Software ab: For a rotatory dual-head positron emission tomography (PET) system, how to determine the rotation increments is an open problem. In this study, we simulated the characteristics of a rotatory dual-head PET system. The influences of different rotation increments were compared and analyzed. Based on this simulation, the imaging performance of a prototype system was verified. A reconstruction flowchart was proposed based on a precalculated system response matrix (SRM). The SRM made the relationships between the voxels and lines of response (LORs) fixed; therefore, we added the interpolation method into the flowchart. Five metrics, including spatial resolution, normalized mean squared error (NMSE), peak signal-to-noise ratio (PSNR), contrast-to-noise (CNR), and structure similarity (SSIM), were applied to assess the reconstructed image quality. The results indicated that the 60° rotation increments with the bilinear interpolation had advantages in resolution, PSNR, NMSE, and SSIM. In terms of CNR, the 90° rotation increments were better than other increments. In addition, the reconstructed images of 90° rotation increments were also flatter than that of 60° increments. Therefore, both the 60° and 90° rotation increments could be used in the real experiments, and which one to choose may depend on the application requirement. pubtype: Academic Journal doctype: algorithm equations & formulas pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
|---|