Next Article in Journal
Experimental Investigation on Adaptive Robust Controller Designs Applied to Constrained Manipulators
Next Article in Special Issue
3D Preoperative Planning in the ER with OsiriX®: When There is No Time for Neuronavigation
Previous Article in Journal
Targeting agr- and agr-Like Quorum Sensing Systems for Development of Common Therapeutics to Treat Multiple Gram-Positive Bacterial Infections
Previous Article in Special Issue
A Low-Cost, Computer-Interfaced Drawing Pad for fMRI Studies of Dysgraphia and Dyslexia
Sensors 2013, 13(4), 5167-5180; doi:10.3390/s130405167

Performance Evaluation of a Modular Detector Unit for X-Ray Computed Tomography

Department of Biomedical Engineering, Tsinghua University, Beijing 100084, China
* Author to whom correspondence should be addressed.
Received: 6 February 2013 / Revised: 15 April 2013 / Accepted: 16 April 2013 / Published: 18 April 2013
(This article belongs to the Special Issue Medical & Biological Imaging)
View Full-Text   |   Download PDF [808 KB, uploaded 21 June 2014]   |   Browse Figures


A research prototype CT scanner is currently under development in our lab. One of the key components in this project is the CT detector. This paper describes the design and performance evaluation of the modular CT detector unit for our proposed scanner. It consists of a Photodiode Array Assembly which captures irradiating X-ray photons and converts the energy into electrical current, and a mini Data Acquisition System which performs current integration and converts the analog signal into digital samples. The detector unit can be easily tiled together to form a CT detector. Experiments were conducted to characterize the detector performance both at the single unit level and system level. The noise level, linearity and uniformity of the proposed detector unit were reported and initial imaging studies were also presented which demonstrated the potential application of the proposed detector unit in actual CT scanners.
Keywords: computed tomography; X-ray detector; performance evaluation; uniformity correction computed tomography; X-ray detector; performance evaluation; uniformity correction
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Share & Cite This Article

Further Mendeley | CiteULike
Export to BibTeX |
EndNote |
MDPI and ACS Style

Guo, Z.; Tang, Z.; Wang, X.; Deng, M.; Hu, G.; Zhang, H. Performance Evaluation of a Modular Detector Unit for X-Ray Computed Tomography. Sensors 2013, 13, 5167-5180.

View more citation formats

Related Articles

Article Metrics

For more information on the journal, click here


[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert