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Chen C, Zhang T, Teng Y, Yu Y, Shu X, Zhang L, Zhao F, Xu J. Automated segmentation of craniopharyngioma on MR images using U-Net-based deep convolutional neural network. Eur Radiol 2023; 33:2665-2675. [PMID: 36396792 PMCID: PMC10017618 DOI: 10.1007/s00330-022-09216-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 09/27/2022] [Accepted: 09/30/2022] [Indexed: 11/19/2022]
Abstract
OBJECTIVES To develop a U-Net-based deep learning model for automated segmentation of craniopharyngioma. METHODS A total number of 264 patients diagnosed with craniopharyngiomas were included in this research. Pre-treatment MRIs were collected, annotated, and used as ground truth to learn and evaluate the deep learning model. Thirty-eight patients from another institution were used for independently external testing. The proposed segmentation model was constructed based on a U-Net architecture. Dice similarity coefficients (DSCs), Hausdorff distance of 95% percentile (95HD), Jaccard value, true positive rate (TPR), and false positive rate (FPR) of each case were calculated. One-way ANOVA analysis was used to investigate if the model performance was associated with the radiological characteristics of tumors. RESULTS The proposed model showed a good performance in segmentation with average DSCs of 0.840, Jaccard of 0.734, TPR of 0.820, FPR of 0.000, and 95HD of 3.669 mm. It performed feasibly in the independent external test set, with average DSCs of 0.816, Jaccard of 0.704, TPR of 0.765, FPR of 0.000, and 95HD of 4.201 mm. Also, one-way ANOVA suggested the performance was not statistically associated with radiological characteristics, including predominantly composition (p = 0.370), lobulated shape (p = 0.353), compressed or enclosed ICA (p = 0.809), and cavernous sinus invasion (p = 0.283). CONCLUSIONS The proposed deep learning model shows promising results for the automated segmentation of craniopharyngioma. KEY POINTS • The segmentation model based on U-Net showed good performance in segmentation of craniopharyngioma. • The proposed model showed good performance regardless of the radiological characteristics of craniopharyngioma. • The model achieved feasibility in the independent external dataset obtained from another center.
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Affiliation(s)
- Chaoyue Chen
- Department of Neurosurgery, Sichuan University, West China Hospital, No. 37, GuoXue Alley, Chengdu, 610041, People's Republic of China.,Department of Radiology, Sichuan University, West China Hospital, No. 37, GuoXue Alley, Chengdu, 610041, People's Republic of China
| | - Ting Zhang
- Department of Neurosurgery, Sichuan University, West China Hospital, No. 37, GuoXue Alley, Chengdu, 610041, People's Republic of China.,Department of Radiology, Sichuan University, West China Hospital, No. 37, GuoXue Alley, Chengdu, 610041, People's Republic of China
| | - Yuen Teng
- Department of Neurosurgery, Sichuan University, West China Hospital, No. 37, GuoXue Alley, Chengdu, 610041, People's Republic of China.,Department of Radiology, Sichuan University, West China Hospital, No. 37, GuoXue Alley, Chengdu, 610041, People's Republic of China
| | - Yijie Yu
- College of Computer Science, Sichuan University, Chengdu, 610065, People's Republic of China
| | - Xin Shu
- College of Computer Science, Sichuan University, Chengdu, 610065, People's Republic of China
| | - Lei Zhang
- College of Computer Science, Sichuan University, Chengdu, 610065, People's Republic of China. .,College of Computer Science, Sichuan University, Chengdu, 610041, People's Republic of China.
| | - Fumin Zhao
- Radiology Department, West China Second University Hospital, Sichuan University, No. 20, section 3, Renmin South Road, Wuhou District, Chengdu, 610041, People's Republic of China.
| | - Jianguo Xu
- Department of Neurosurgery, Sichuan University, West China Hospital, No. 37, GuoXue Alley, Chengdu, 610041, People's Republic of China. .,Department of Radiology, Sichuan University, West China Hospital, No. 37, GuoXue Alley, Chengdu, 610041, People's Republic of China.
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Zhang C, Zhang Y, Liang M, Shi X, Jun Y, Fan L, Yang K, Wang F, Li W, Zhu R. Near-infrared upconversion multimodal nanoparticles for targeted radionuclide therapy of breast cancer lymphatic metastases. Front Immunol 2022; 13:1063678. [PMID: 36532036 PMCID: PMC9751193 DOI: 10.3389/fimmu.2022.1063678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 11/14/2022] [Indexed: 12/05/2022] Open
Abstract
The theranostics of lymph node metastasis has always been one of the major obstacles to defeating breast cancer and an important decisive factor in the prognosis of patients. Herein, we design NaGdF4:Yb,Tm@NaLuF4 upconversion nanoparticles with PEG and anti-HER2 monoclonal antibody (trastuzumab, Herceptin) (NP-mAb), the delivery of NP-mAb through the lymphatic system allows for effective targeting and accumulation in lymphatic metastasis. Combination of radionuclides 68Ga and 177Lu could be chelated by the bisphosphate groups of NP-mAb. The obtained nanoprobe (NP-mAb) and nanonuclear drug (68Ga-NP-mAb or 177Lu-NP-mAb) exhibited excellent stability and show high accumulation and prolong retention in the lymph node metastasis after intratumoral injection into the foot pad by near-infrared fluorescence (NIRF), single-photon emission computed tomography (SPECT) and positron emission tomography (PET) imaging. Utilizing the β-rays released by 177Lu, 177Lu-NP-mAb could not only decrease the incidence of lymph node metastasis, but also significantly decrease the volumes of lymph node metastasis. Additionally, 177Lu-NP-mAb induce no obvious toxicity to treated mice through blood routine, liver and kidney function assay. Therefore, nanoprobe and nanonuclear drug we designed could be acted as excellent theranostics agents for lymph node metastasis, providing potential alternatives diagnose and treatment option for lymph node metastasis.
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Affiliation(s)
- Chuan Zhang
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, Jiangsu, China,Department of Nuclear Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Yujuan Zhang
- Department of Pathology, Experimental Center of Suzhou Medical College of Soochow University, Suzhou, Jiangsu, China
| | - Maolin Liang
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, Jiangsu, China
| | - Xiumin Shi
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, Jiangsu, China,Department of Nuclear Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Yan Jun
- The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University, Suzhou, Jiangsu, China
| | - Longfei Fan
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, Jiangsu, China
| | - Kai Yang
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, Jiangsu, China
| | - Feng Wang
- Department of Nuclear Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Wei Li
- Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China,*Correspondence: Ran Zhu, ; Wei Li,
| | - Ran Zhu
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, Jiangsu, China,*Correspondence: Ran Zhu, ; Wei Li,
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Aju D., Joseph SS. 3D Reconstruction Methods Purporting 3D Visualization and Volume Estimation of Brain Tumors. INTERNATIONAL JOURNAL OF E-COLLABORATION 2022. [DOI: 10.4018/ijec.290296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This work proposes the Crust algorithm for 3D reconstruction of brain tumor, an effective mechanism in the visualization of tumors for presurgical planning, radiation dose calculation. Despite the promising performance of Crust algorithm in reconstruction of Stanford models, it has not yet been considered in 3D reconstruction of brain tumor. Validation of the results is done using the comparison of the 3D models from two cutting edge techniques namely the Marching Cube and the Alpha shape algorithm. The obtained result shows that Crust algorithm provides the brain tumor model with an average quality of triangle meshes ranging from 0.85 to 0.95. Concerning the visual realism, the quality of Crust algorithm models is higher on comparison to the other models. Precision of tumor volume measurement by convex hull method is analysed by repeatability and reproducibility. The standard deviations of repeatability were between 2.03 % and 3.97 %. The experimental results show that Linear Crust algorithm produces high quality meshes with average quality of equilateral triangles close to 1.
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Affiliation(s)
- Aju D.
- Vellore Institute of Technology, India
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2D alpha-shapes to quantify retinal microvasculature morphology and their application to proliferative diabetic retinopathy characterisation in fundus photographs. Sci Rep 2021; 11:22814. [PMID: 34819594 PMCID: PMC8613232 DOI: 10.1038/s41598-021-02329-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Accepted: 11/09/2021] [Indexed: 11/17/2022] Open
Abstract
The use of 2D alpha-shapes (α-shapes) to quantify morphological features of the retinal microvasculature could lead to imaging biomarkers for proliferative diabetic retinopathy (PDR). We tested our approach using the MESSIDOR dataset that consists of colour fundus photographs from 547 healthy individuals, 149 with mild diabetic retinopathy (DR), 239 with moderate DR, 199 pre-PDR and 53 PDR. The skeleton (centrelines) of the automatically segmented retinal vasculature was represented as an α-shape and the proposed parameters, complexity (\documentclass[12pt]{minimal}
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\begin{document}$${Op\alpha }_{min}$$\end{document}Opαmin), spread (OpA), global shape (VS) and presence of abnormal angiogenesis (Gradα) were computed. In cross-sectional analysis, individuals with PDR had a lower \documentclass[12pt]{minimal}
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\begin{document}$${Op\alpha }_{min}$$\end{document}Opαmin, OpA and Gradα indicating a vasculature that is more complex, less spread (i.e. dense) and the presence of numerous small vessels. The results show that α-shape parameters characterise vascular abnormalities predictive of PDR (AUC 0.73; 95% CI [0.73 0.74]) and have therefore potential to reveal changes in retinal microvascular morphology.
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MATLAB Virtual Toolbox for Retrospective Rockfall Source Detection and Volume Estimation Using 3D Point Clouds: A Case Study of a Subalpine Molasse Cliff. GEOSCIENCES 2021. [DOI: 10.3390/geosciences11020075] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The use of 3D point clouds to improve the understanding of natural phenomena is currently applied in natural hazard investigations, including the quantification of rockfall activity. However, 3D point cloud treatment is typically accomplished using nondedicated (and not optimal) software. To fill this gap, we present an open-source, specific rockfall package in an object-oriented toolbox developed in the MATLAB® environment. The proposed package offers a complete and semiautomatic 3D solution that spans from extraction to identification and volume estimations of rockfall sources using state-of-the-art methods and newly implemented algorithms. To illustrate the capabilities of this package, we acquired a series of high-quality point clouds in a pilot study area referred to as the La Cornalle cliff (West Switzerland), obtained robust volume estimations at different volumetric scales, and derived rockfall magnitude–frequency distributions, which assisted in the assessment of rockfall activity and long-term erosion rates. An outcome of the case study shows the influence of the volume computation on the magnitude–frequency distribution and ensuing erosion process interpretation.
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Mobile LiDAR Scanning System Combined with Canopy Morphology Extracting Methods for Tree Crown Parameters Evaluation in Orchards. SENSORS 2021; 21:s21020339. [PMID: 33419182 PMCID: PMC7825505 DOI: 10.3390/s21020339] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 12/25/2020] [Accepted: 01/03/2021] [Indexed: 12/02/2022]
Abstract
To meet the demand for canopy morphological parameter measurements in orchards, a mobile scanning system is designed based on the 3D Simultaneous Localization and Mapping (SLAM) algorithm. The system uses a lightweight LiDAR-Inertial Measurement Unit (LiDAR-IMU) state estimator and a rotation-constrained optimization algorithm to reconstruct a point cloud map of the orchard. Then, Statistical Outlier Removal (SOR) filtering and European clustering algorithms are used to segment the orchard point cloud from which the ground information has been separated, and the k-nearest neighbour (KNN) search algorithm is used to restore the filtered point cloud. Finally, the height of the fruit trees and the volume of the canopy are obtained by the point cloud statistical method and the 3D alpha-shape algorithm. To verify the algorithm, tracked robots equipped with LIDAR and an IMU are used in a standardized orchard. Experiments show that the system in this paper can reconstruct the orchard point cloud environment with high accuracy and can obtain the point cloud information of all fruit trees in the orchard environment. The accuracy of point cloud-based segmentation of fruit trees in the orchard is 95.4%. The R2 and Root Mean Square Error (RMSE) values of crown height are 0.93682 and 0.04337, respectively, and the corresponding values of canopy volume are 0.8406 and 1.5738, respectively. In summary, this system achieves a good evaluation result of orchard crown information and has important application value in the intelligent measurement of fruit trees.
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Huang L, Feng Y, Liang F, Zhao P, Wang W. Dual-fiber microfluidic chip for multimodal manipulation of single cells. BIOMICROFLUIDICS 2021; 15:014106. [PMID: 33537113 PMCID: PMC7846294 DOI: 10.1063/5.0039087] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 01/05/2021] [Indexed: 05/22/2023]
Abstract
On-chip single-cell manipulation is imperative in cell biology and it is desirable for a microfluidic chip to have multimodal manipulation capability. Here, we embedded two counter-propagating optical fibers into the microfluidic chip and configured their relative position in space to produce different misalignments. By doing so, we demonstrated multimodal manipulation of single cells, including capture, stretching, translation, orbital revolution, and spin rotation. The rotational manipulation can be in-plane or out-of-plane, providing flexibility and capability to observe the cells from different angles. Based on out-of-plane rotation, we performed a 3D reconstruction of cell morphology and extracted its five geometric parameters as biophysical features. We envision that this type of microfluidic chip configured with dual optical fibers can be helpful in manipulating cells as the upstream process of single-cell analysis.
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Affiliation(s)
| | - Yongxiang Feng
- Department of Precision Instrument, State Key Laboratory of Precision Measurement Technology and Instrument, Tsinghua University, Beijing 100084, China
| | - Fei Liang
- Department of Precision Instrument, State Key Laboratory of Precision Measurement Technology and Instrument, Tsinghua University, Beijing 100084, China
| | - Peng Zhao
- Department of Precision Instrument, State Key Laboratory of Precision Measurement Technology and Instrument, Tsinghua University, Beijing 100084, China
| | - Wenhui Wang
- Department of Precision Instrument, State Key Laboratory of Precision Measurement Technology and Instrument, Tsinghua University, Beijing 100084, China
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Automatic room information retrieval and classification from floor plan using linear regression model. INT J DOC ANAL RECOG 2020. [DOI: 10.1007/s10032-020-00357-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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El-Torky DMS, Al-Berry MN, Salem MAM, Roushdy MI. 3D Visualization of Brain Tumors Using MR Images: A Survey. Curr Med Imaging 2020; 15:353-361. [PMID: 31989903 DOI: 10.2174/1573405614666180111142055] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 01/02/2018] [Accepted: 01/02/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND Three-Dimensional visualization of brain tumors is very useful in both diagnosis and treatment stages of brain cancer. DISCUSSION It helps the oncologist/neurosurgeon to take the best decision in Radiotherapy and/or surgical resection techniques. 3D visualization involves two main steps; tumor segmentation and 3D modeling. CONCLUSION In this article, we illustrate the most widely used segmentation and 3D modeling techniques for brain tumors visualization. We also survey the public databases available for evaluation of the mentioned techniques.
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Affiliation(s)
| | - Maryam Nabil Al-Berry
- Department of Basic Sciences, Faculty of Computers and Information Science, Ain Shams University, Cairo, Egypt
| | - Mohammed Abdel-Megeed Salem
- Department of Basic Sciences, Faculty of Computers and Information Science, Ain Shams University, Cairo, Egypt
| | - Mohamed Ismail Roushdy
- Department of Basic Sciences, Faculty of Computers and Information Science, Ain Shams University, Cairo, Egypt
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Huang L, Zhao P, Wang W. 3D cell electrorotation and imaging for measuring multiple cellular biophysical properties. LAB ON A CHIP 2018; 18:2359-2368. [PMID: 29946598 DOI: 10.1039/c8lc00407b] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
3D rotation is one of many fundamental manipulations to cells and imperative in a wide range of applications in single cell analysis involving biology, chemistry, physics and medicine. In this article, we report a dielectrophoresis-based, on-chip manipulation method that can load and rotate a single cell for 3D cell imaging and multiple biophysical property measurements. To achieve this, we trapped a single cell in constriction and subsequently released it to a rotation chamber formed by four sidewall electrodes and one transparent bottom electrode. In the rotation chamber, rotating electric fields were generated by applying appropriate AC signals to the electrodes for driving the single cell to rotate in 3D under control. The rotation spectrum for in-plane rotation was used to extract the cellular dielectric properties based on a spherical single-shell model, and the stacked images of out-of-plane cell rotation were used to reconstruct the 3D cell morphology to determine its geometric parameters. We have tested the capabilities of our method by rotating four representative mammalian cells including HeLa, C3H10, B lymphocyte, and HepaRG. Using our device, we quantified the area-specific membrane capacitance and cytoplasm conductivity for the four cells, and revealed the subtle difference of geometric parameters (i.e., surface area, volume, and roughness) by 3D cell imaging of cancer cells and normal leukocytes. Combining microfluidics, dielectrophoresis, and microscopic imaging techniques, our electrorotation-on-chip (EOC) technique is a versatile method for manipulating single cells under investigation and measuring their multiple biophysical properties.
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Affiliation(s)
- Liang Huang
- State Key Laboratory of Precision Measurement Technology and Instrument, Department of Precision Instrument, Tsinghua University, Beijing, China.
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Newton BD, Wright K, Winkler MD, Bovis F, Takahashi M, Dimitrov IE, Sormani MP, Pinho MC, Okuda DT. Three-Dimensional Shape and Surface Features Distinguish Multiple Sclerosis Lesions from Nonspecific White Matter Disease. J Neuroimaging 2017; 27:613-619. [DOI: 10.1111/jon.12449] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 04/04/2017] [Accepted: 04/17/2017] [Indexed: 11/27/2022] Open
Affiliation(s)
- Braeden D. Newton
- UT Southwestern Medical Center, Department of Neurology & Neurotherapeutics, Neuroinnovation Program, Multiple Sclerosis & Neuroimmunology Imaging Program; Clinical Center for Multiple Sclerosis; Dallas TX
| | - Katy Wright
- UT Southwestern Medical Center, Department of Neurology & Neurotherapeutics, Neuroinnovation Program, Multiple Sclerosis & Neuroimmunology Imaging Program; Clinical Center for Multiple Sclerosis; Dallas TX
| | - Mandy D. Winkler
- UT Southwestern Medical Center, Department of Neurology & Neurotherapeutics, Neuroinnovation Program, Multiple Sclerosis & Neuroimmunology Imaging Program; Clinical Center for Multiple Sclerosis; Dallas TX
| | - Francesca Bovis
- University of Genoa; Department of Health Sciences (DISSAL); Genoa Italy
| | - Masaya Takahashi
- Advanced Imaging Research Center; UT Southwestern Medical Center; Dallas TX
| | - Ivan E. Dimitrov
- Advanced Imaging Research Center; UT Southwestern Medical Center; Dallas TX
- Philips Medical Systems; Cleveland OH
| | - Maria Pia Sormani
- University of Genoa; Department of Health Sciences (DISSAL); Genoa Italy
| | - Marco C. Pinho
- UT Southwestern Medical Center; Department of Radiology; Dallas TX
| | - Darin T. Okuda
- UT Southwestern Medical Center, Department of Neurology & Neurotherapeutics, Neuroinnovation Program, Multiple Sclerosis & Neuroimmunology Imaging Program; Clinical Center for Multiple Sclerosis; Dallas TX
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