Minimization of Streak Artifacts in CT Images Using Particle swarm optimization based Algorithm
Journal Title: IOSR Journal of Electronics and Communication Engineering(IOSR-JECE) - Year 2018, Vol 13, Issue 6
Abstract
In computed tomography (CT) images, metal inculcates raises the deviations between the consistent data and the linear attenuation inference maintained by perceptive CT reconstruction algorithms. The deviations create the increase of bright and dark bands and streaks in the ultimate reconstructed image, untidily known as metal artifacts. The artifacts in the CT image become difficult for radiologists to acquire actual diagnostic arbitration[1]. The Numerous probable causes of metal streak artifacts are designed using phantom simulations and measurements. Beam hardening, exponential edge-gradient effect, scattering effect, noise are analyzed as potential causes of metal streak artifacts[2].PSO (particle swarm optimization) the algorithm uses a back projection method called as particle based back projection for projection data particles in the optimized space during back-projection relatively to the location where each angle is resided at the time of projection. Better results are acquired for simulations and phantom measurements streak artifacts are minimized throughout the time and the slight line-shaped particulars are preserved. Noise can be minimized using iterative reconstruction or by combining data from different scans. This enables lower radiation dose and higher resolution scans. Streak artifacts are reduced using iterative reconstruction, proceeding in extended accurate diagnosis.
Authors and Affiliations
Dr. M. V. Sruthi, Dr. KVSRIT Kurnool
Keywords
Related Articles
- EP ID EP439345
- DOI 10.9790/2834-1306015458.
- Views 126
- Downloads 0
Black Box for Vehicle Dynamics - After Analysis App
Across the world, Vehicle accidents are quite common on roads. It’s just that they vary in numbers from place to place. Those who are involved in an accident might get into an argument and/or seek in-court settlements. T...
Performance Comparison of FH-CDMA Scheme Using Chaotic Sequences over Fading Channels
In this work, the performance analysis of FH-CDMA scheme in terms of bit error probability (BEP) Vs number of simultaneous users over three different channels i.e. AWGN, Rician and Rayleigh channels is presented. The pri...
High Speed Arithmetic: Interleaved Modular Multipliers Using Radix 8 Booth Encoder
Booth multiplication algorithm leads to faster performance compared to lot of other algorithms. Various encoding styles are available depending upon number of bits in the group such as radix-2, radix-4, radix-8, radix-16...
Omnidirectional Reflection Characteristics of Photonic Crystal
In this paper the reflection characteristics of photonic crystal is observed. Under certain condition, one dimensional dielectric lattice displays total reflection of the incident light. The thickness of the layers, the...
Analysis of Cloud Attenuation Effect on Satellite Communication Systems in Southern Nigeria
This paper analyses the cloud attenuation effects of communication signals at frequencies of 20- 50GHz in the southern region of Nigeria. The methodology adopts the modified model for specific attenuation due to cloud po...