Title

Fast and accurate photon-counting detector-based material decomposition via nearest neighborhood method

Alternative Title

최근접 알고리즘을 이용한 신속하고 정확한 광자 수 측정 장치 기반 물질 분리 방법

DGIST Authors

Jeonghyeon Nam ; Okkyun Lee ; Dong Hye Ye

Advisor

이옥균

Co-Advisor(s)

Dong Hye Ye

Issued Date

2021

Awarded Date

2021/02

Citation

Jeonghyeon Nam. (2021). Fast and accurate photon-counting detector-based material decomposition via nearest neighborhood method. doi: 10.22677/thesis.200000363790

Type

Thesis

Subject

Material decomposition,Photon-counting detector,Nearest neighborhood,Maximum likelihood

Table Of Contents

1 Introduction 1
2 Background 2
2.1 Material Decomposition 2
2.2 Forward Model 3
2.3 Maximum Likelihood-based Method 4
3 Methods 4
3.1 Mean Squared Error-based Method 4
3.2 Proposed Nearest Neighborhood-based Method 4
3.3 Simulation Settings 5
3.3.1 Implementation Issues 5
3.3.2 Slab Phantom Simulation Settings 6
3.3.3 Abdominal Phantom Simulation Settings 6
4 Numerical Results 6
4.1 Numerical Validation for the Existence of the Critical Point 6
4.2 Slab Phantom Simulation Results 7
4.3 Abdominal Phantom Simulation Results 10
5 Discussion 11
6 Conclusion 11

URI

http://dgist.dcollection.net/common/orgView/200000363790
http://hdl.handle.net/20.500.11750/16682

DOI

10.22677/thesis.200000363790

Degree

Master

Department

Robotics Engineering

Publisher

DGIST

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