PuSH - Publication Server of Helmholtz Zentrum München: Evaluation of cost-effective ratio (imaging quality vs. radiation dose) of Varian cone beam CT based on figure of merit (FOM).

Navigation

Home

Deutsch

Research

Advanced Search

Browse by ...

... Journal

... Publication Type

... Research Data

... Publication Year

Publication overview

Support & Contact

Contact persons

Help

Data protection

Li, Y.* ; Wu, H.* ; Yang, J.* ; Li, T.* ; Yu, S.* ; Lu, Z.* ; Wang, M.* ; Li, C.* ; Li, W.B. ; Zhang, Y.*

Evaluation of cost-effective ratio (imaging quality vs. radiation dose) of Varian cone beam CT based on figure of merit (FOM).

Chin. J. Rad. Med. Prot. 40, 595-599 (2020)

DOI

Abstract
Metrics
Extra information

Objective: To analyze and compare the radiation dose and image quality of kilo-voltage cone beam CT systems on different Varian accelerator platforms, providing data to support clinical decisions on selecting optimal protocols for image-guided radiotherapy based on cost-effective ratio (image quality / radiation dose). Methods: The radiation dose and image quality of various CBCT systems and scanning protocols on Varian Edge, Truebeam and ix (new and old) LINACs were obtained using a CT dose index (CTDI) phantom combined with a CT ionization chamber and a Catphan604 phantom, respectively. Figure of merit (FOM) was used to evaluate the cost-effective ratio of the image guidance schemes. Results: Considerable inter-system varieties of FOMs were observed, varying from 0.65 (Image Gently-full trajectory) to 48.46 (Image Gently-half trajectory). The inter-protocol varieties were also large, where the mean±SD was 22.14±13.47. Conclusions: Considering the explicit inter-system and inter-protocol varieties, it is clinically favorable to evaluate the image guidance schemes based on machine-specific measurement. For instance, parameters and equipment with low CTDIw can be beneficial for dose-sensitive patients. High CNR regimen favors patients with high image quality requirements. For ordinary patients, cost-effective ratio in terms of FOM can be very helpful to guide the decision-making of clinical image-guided radiotherapy.

Altmetric

Additional Metrics?

[➜Log in]

Edit extra informations Login

Publication type Article: Journal article

Document type Scientific Article

Corresponding Author

Keywords Image Guided Radiotherapy ; Image Quality ; Kv Cone Beam Ct ; Radiation Dose

ISSN (print) / ISBN 0254-5098

Journal Chinese Journal of Radiological Medicine and Protection

Quellenangaben Volume: 40, Issue: 8, Pages: 595-599

Publisher Chinese Medical Association

Non-patent literature Publications

Reviewing status Peer reviewed

Institute(s) Institute of Radiation Medicine (IRM)