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Characteristics of Magnetic Resonance-Based Attenuation Correction Map on Phantom Study in Positron Emission Tomography/Magnetic Resonance Imaging System

Hong C

An MR-based attenuation correction (MRAC) map plays an important role in quantitative positron emission tomography (PET) image evaluation in PET/magnetic resonance imaging (MRI) systems.However, the MRAC map is affected by...
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Potential Clinical Applications of ¹⁸F-Fluorodeoxyglucose Positron Emission Tomography/Magnetic Resonance Mammography in Breast Cancer

Cho IH, Kong EJ

The whole-body positron emission tomography (PET)/magnetic resonance (MR) scan is a cutting edge technology providing comprehensive structural information from MR imaging and functional features from PET in a single session....
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Motion Correction in PET/CT Images

Woo SK, Cheon GJ

  • KMID: 1484985
  • Nucl Med Mol Imaging.
  • 2008 Apr;42(2):172-180.
PET/CT fused image with anatomical and functional information have improved medical diagnosis and interpretation. This fusion has resulted in more precise localization and characterization of sites of radio-tracer uptake. However,...
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Physical Artifact Correction in Nuclear Medicine Imaging: Normalization and Attenuation Correction

Kim JS, Lee JS, Cheon GJ

  • KMID: 1484978
  • Nucl Med Mol Imaging.
  • 2008 Apr;42(2):112-117.
Artifact corrections including normalization and attenuation correction were important for quantitative analysis in Nuclear Medicine Imaging. Normalization is the process of ensuring that all lines of response joining detectors in...
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Quantitative Comparisons between CT and 68Ge Transmission Attenuation Corrected 18F-FDG PET Images: Measured Attenuation Correction vs. Segmented Attenuation Correction

Choi JY, Woo SK, Choi Y, Choe YS, Lee KH, Kim BT

  • KMID: 1512515
  • Nucl Med Mol Imaging.
  • 2007 Feb;41(1):49-53.
PURPOSE: It was reported that CT-based measured attenuation correction (CT-MAC) produced radioactivity concentration values significantly higher than 68Ge-based segmented attenuation correction (Ge-SAC) in PET images. However, it was unknown whether...
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The Effect of Intravenous Contrast on SUV Value in 18F-FDG PET/CT using Diagnostic High Energy CT

Jeong YJ, Kang DY

  • KMID: 1599704
  • Nucl Med Mol Imaging.
  • 2006 Jun;40(3):169-176.
PURPOSE: According to the development of CT scanner in PET/CT system, the role of CT unit as a diagnostic tool has been more important. To improve the diagnostic ability of...
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Effects of Attenuation and Scatter Corrections in Cat Brain PET Images Using microPET R4 Scanner

Kim JS, Lee JS, Lee JJ, Lee BI, Park MH, Lee HJ, Oh SH, Kim KM, Cheon GJ, Lim SM, Chung JK, Lee MC, Lee DS

  • KMID: 1599579
  • Nucl Med Mol Imaging.
  • 2006 Feb;40(1):40-47.
PURPOSE: The aim of this study was to examine the effects of attenuation correction (AC) and scatter correction (SC) on the quantification of PET count rates. MATERIALS AND METHODS: To...
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Impact of Contrast Agent for PET Images with CT-based Attenuation Correction

Son HK, Turkington TG, Kwon YY, Jung H, Kim HJ

  • KMID: 1590878
  • Korean J Med Phys.
  • 2005 Dec;16(4):192-201.
Experiments and simulation were done to study the impact of contrast agent when CT scan was used to attenuation correction for PET images in PET/CT system. Whole body phantom was...
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The Effect of Attenuation Correction with CT on the Interpretation of Myocardial Perfusion SPECT: in Patients with Normal Coronary Angiogram

Chun KA, Cho IH, Won KC, Lee HW, Hong GR, Shin DG, Kim YJ, Shim BS

  • KMID: 2256979
  • Korean J Nucl Med.
  • 2005 Aug;39(4):246-251.
PURPOSE: There has been many reports for the effect of attenuation correction on myocardial perfusion SPECT. We studied the effect of attenuation correction with CT (computed tomography) in patients with...
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Evaluation of a Conjugate View Method for Determination of Kidney Uptake

Bong JK, Yun M, Lee JD, Kim HJ, Son HK, Kwon YY, Park HJ, Kim YS

  • KMID: 2078819
  • Korean J Nucl Med.
  • 2005 Jun;39(3):191-199.
PURPOSE: In order to obtain better quantitation of kidney uptake, this study is to evaluate a conjugate view method (CVM) using a geometric mean attenuation correction for kidney uptake and...
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Assessment of Attenuation Correction Techniques with a 137Cs Point Source

Bong JK, Kim HJ, Son HK, Park YY, Park HJ, Yun M, Lee JD, Jung HJ

  • KMID: 1596256
  • Korean J Nucl Med.
  • 2005 Feb;39(1):57-68.
PURPOSE: The objective of this study was to assess attenuation correction algorithms with the 137Cs point source for the brain positron emission tomography (PET) imaging process. MATERIALS AND METHODS: Four...
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Improved Activity Estimation using Combined Scatter and Attenuation Correction in SPECT

Lee JR, Choi CW, Lim SM, Hong SW

  • KMID: 2078715
  • Korean J Nucl Med.
  • 1998 Aug;32(4):382-390.
PURPOSE: The pvrpose of this study was to evaluate the accuracy of radioactivity quantitation in Tc-99m SPECT by using combined scatter and attenuation correction. MATERIALS AND METHODS: A cylindrical phantom...
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