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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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The Effects of Breathing Motion on DCE-MRI Images: Phantom Studies Simulating Respiratory Motion to Compare CAIPIRINHA-VIBE, Radial-VIBE, and Conventional VIBE

Lee CK, Seo N, Kim B, Huh J, Kim JK, Lee SS, Kim IS, Nickel D, Kim KW

OBJECTIVE: To compare the breathing effects on dynamic contrast-enhanced (DCE)-MRI between controlled aliasing in parallel imaging results in higher acceleration (CAIPIRINHA)-volumetric interpolated breath-hold examination (VIBE), radial VIBE with k-space-weighted image...
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Intervention Planning Using a Laser Navigation System for CT-Guided Interventions: A Phantom and Patient Study

Gruber-Rouh T, Lee C, Bolck J, Naguib NN, Schulz B, Eichler K, Aschenbach R, Wichmann J, Vogl TJ, Zangos S

OBJECTIVE: To investigate the accuracy, efficiency and radiation dose of a novel laser navigation system (LNS) compared to those of free-handed punctures on computed tomography (CT). MATERIALS AND METHODS: Sixty punctures...
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Effects of MR Parameter Changes on the Quantification of Diffusion Anisotropy and Apparent Diffusion Coefficient in Diffusion Tensor Imaging: Evaluation Using a Diffusional Anisotropic Phantom

Kim SJ, Choi CG, Kim JK, Yun SC, Jahng GH, Jeong HK, Kim EJ

OBJECTIVE: To validate the usefulness of a diffusional anisotropic capillary array phantom and to investigate the effects of diffusion tensor imaging (DTI) parameter changes on diffusion fractional anisotropy (FA) and...
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Adaptive Iterative Dose Reduction Algorithm in CT: Effect on Image Quality Compared with Filtered Back Projection in Body Phantoms of Different Sizes

Kim M, Lee JM, Yoon JH, Son H, Choi JW, Han JK, Choi BI

OBJECTIVE: To evaluate the impact of the adaptive iterative dose reduction (AIDR) three-dimensional (3D) algorithm in CT on noise reduction and the image quality compared to the filtered back projection...
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Impact of the Parameter Variation on the Image Blurring in 3 T Magnetic Resonance Imaging: A Phantom Study

Kim JW, Lee SH, Kim N, Cho KS, Lee JS

PURPOSE: To evaluate the effects of the key imaging-parameter alterations on the four MR sequences in a phantom study. MATERIALS AND METHODS: Magnetic resonance (MR) imaging was performed on a MR...
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Semi-Automatic Measurement of the Airway Dimension by Computed Tomography Using the Full-With-Half-Maximum Method: a Study of the Measurement Accuracy according to the Orientation of an Artificial Airway

Kim N, Seo JB, Song KS, Chae EJ, Kang SH

OBJECTIVE: To develop an algorithm to measure the dimensions of an airway oriented obliquely on a volumetric CT, as well as assess the effect of the imaging parameters on the...
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Assessment of Imaging Distortion in Magnetic Resonance Imaging for Stereotactic Radiosurgery: Through Phantom Study

Park SW, Han MH, Kim DG, Chung HT, Song IC, Kim HD, Chang KH

  • KMID: 2206861
  • J Korean Soc Magn Reson Med.
  • 2000 Jun;4(1):7-13.
PURPOSE: To assess the distortion of MRI with the Leksell stereotactic radiosurgery system in variable pulse sequence and imaging plane through phantom study, to find most adequate imaging plane and...
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