Presentation is loading. Please wait.

Presentation is loading. Please wait.

Choline/NAA Spatial Variation Lars Ewell Radiation Oncology University of Arizona Medical Center 1/25/08 1.

Published by Modified over 9 years ago

Similar presentations

Presentation on theme: "Choline/NAA Spatial Variation Lars Ewell Radiation Oncology University of Arizona Medical Center 1/25/08 1."— Presentation transcript:

1 Choline/NAA Spatial Variation Lars Ewell Radiation Oncology University of Arizona Medical Center 1/25/08 1

2 Cho/NAA Spatial Variation Cho/NAA has potential for necrosis/disease discrimination Weybright et al., Neuroradiology (2004) 46: 541–549

3 Patient 1: Scanned 3/23/07 S26S46

4 Patient 1, Cho/NAA 3/23/07 Highest ratio near center of disease/radiation. Dark blue not zero, ambiguous, indeterminate spectra.

5 Patient 1, Cho/NAA 5/8/07 Highest ratio moved posterior relative to 3/23/07 spectra. Dark blue not zero, ambiguous, indeterminate spectra.

6 Patient 1: Row and Columns 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

7 Central Increase going from Inferior to Superior Slice: Columns 6, 7, 8 Peripheral Decrease going from Inferior to Superior Slice: Columns 5, 10, 11

8 Similar behavior for row number 12

9 Closer to lesion, different behavior

Download ppt "Choline/NAA Spatial Variation Lars Ewell Radiation Oncology University of Arizona Medical Center 1/25/08 1."

Similar presentations

The Dependence of the Apparent Diffusion Coefficient on Voxel Location and Calculation Method Lars Ewell 1, Naren Vijayakumar 2 2007 Meeting of the American.

The Dependence of the Apparent Diffusion Coefficient on Voxel Location and Calculation Method Lars Ewell 1, Naren Vijayakumar Meeting of the American.
The DWMRI/MRS Glioma Imaging Protocol Lars Ewell University of Arizona Medical Center Department of Radiation Oncology Faculty Research Meeting 6/23/08.

The DWMRI/MRS Glioma Imaging Protocol Lars Ewell University of Arizona Medical Center Department of Radiation Oncology Faculty Research Meeting 6/23/08.
1 Research Update/Review LAE 5/23/08. 2 RIN/Recurrent Disease: The Problem T1 weighted contrast enhanced MRI taken 16 months after completion of radiotherapy.

1 Research Update/Review LAE 5/23/08. 2 RIN/Recurrent Disease: The Problem T1 weighted contrast enhanced MRI taken 16 months after completion of radiotherapy.
Inferior Brain Lesions Monitored Using Diffusion Weighted Magnetic Resonance Imaging Lars Ewell 1, Naren Vijayakumar 2, Jeffrey J. Rodriguez 2 and Baldassarre.

Inferior Brain Lesions Monitored Using Diffusion Weighted Magnetic Resonance Imaging Lars Ewell 1, Naren Vijayakumar 2, Jeffrey J. Rodriguez 2 and Baldassarre.
Methods to Differentiate Radiation Induced Necrosis and Recurrent Disease in Gliomas Lars Ewell University of Arizona Medical Center Department of Radiation.

Methods to Differentiate Radiation Induced Necrosis and Recurrent Disease in Gliomas Lars Ewell University of Arizona Medical Center Department of Radiation.
1 ADC Calculations Lars Ewell Radiation Oncology University of Arizona Medical Center 2/8/08 1.

1 ADC Calculations Lars Ewell Radiation Oncology University of Arizona Medical Center 2/8/08 1.
Voxel Location Dependence of Brain Metabolites as Determined by Magnetic Resonance Spectroscopy L.Ewell, A. Bhullar and B. Stea—Department of Radiation.

Voxel Location Dependence of Brain Metabolites as Determined by Magnetic Resonance Spectroscopy L.Ewell, A. Bhullar and B. Stea—Department of Radiation.
Bimonthly Meeting on July 22, 2008 Mathematical Model for MRS Amarjeet Bhullar.

Bimonthly Meeting on July 22, 2008 Mathematical Model for MRS Amarjeet Bhullar.
Metabolic Concentrations and Ratios of Brain Tissue Amarjeet Bhullar, Lars Ewell, Tim McDaniel and Baldassarre Stea Department of Radiation Oncology, The.

Metabolic Concentrations and Ratios of Brain Tissue Amarjeet Bhullar, Lars Ewell, Tim McDaniel and Baldassarre Stea Department of Radiation Oncology, The.
Method for Determining Apparent Diffusion Coefficient Values for Cerebral Lesions from Diffusion Weighted Magnetic Resonance Imaging Examinations T.H.

Method for Determining Apparent Diffusion Coefficient Values for Cerebral Lesions from Diffusion Weighted Magnetic Resonance Imaging Examinations T.H.
14 Identify the fibers coursing at the blue arrow.

14 Identify the fibers coursing at the blue arrow.
Matrix Multiplication The Introduction. Look at the matrix sizes.

Matrix Multiplication The Introduction. Look at the matrix sizes.
$200 $400 $600 $800 $1000 $200 $400 $600 $800 $1000 $200 $400 $600 $800 $1000 $200 $400 $600 $800 $1000 $200 $400 $600 $800 $1000 $200.

$200 $400 $600 $800 $1000 $200 $400 $600 $800 $1000 $200 $400 $600 $800 $1000 $200 $400 $600 $800 $1000 $200 $400 $600 $800 $1000 $200.
Spatial Image Enhancement

Spatial Image Enhancement
Chapter 07 – Rate, Ratio & Variation Q1

Chapter 07 – Rate, Ratio & Variation Q1
Review of a patient with confirmed pulmonary veno-occlusive disease and nonmatched perfusion defects. a) Ventilation/perfusion lung scan with multiple.

Review of a patient with confirmed pulmonary veno-occlusive disease and nonmatched perfusion defects. a) Ventilation/perfusion lung scan with multiple.
Cedar 1-2 (row 1-2) P/T values given in mol/m^3

Cedar 1-2 (row 1-2) P/T values given in mol/m^3
'. \s\s I. '.. '... · \ \ \,, I.

'. \s\s I. '.. '... · \ \ \,, I.
Bilateral cavitary plaques.

Bilateral cavitary plaques.
Xe-CT CBF maps in a patient with Moyamoya disease.

Xe-CT CBF maps in a patient with Moyamoya disease.

Similar presentations

Ads by Google