Research and Publications

Research

The Neuroradiology section is continuously working on developing the necessary infrastructure to conduct novel clinical research projects. In addition, to ensuring that there is research opportunities available to medical students, residents and fellows. The following are resources that our fellows utilize when conducting research:

  • Two Clinical Research Associates who support all clinical research and activities:  Including but not limited to collecting, processing, organizing, and summarizing data as well as designing protocols for research projects, analyzing data and interpreting the results, writing IRB and grants, and publishing abstracts and articles.
  • Facilities/Equipment:
    • Office is located in room (J2.255), located on the second floor of Jones in Memorial Hermann Hospital-TMC. Office has 4 work stations with phone lines and computers, three file cabinets and storage lockers and one working rotating office.
    • One windows computer connected to MHH-TMC network with direct PACS access
    • Three windows computers connected to UTHealth network
    • High-end computing technology via two robust Mac computers with server capabilities connected to UTHealth network
    • Windows and Mac-based DICOM viewers and post-processing software installed on terminal stations such as OsiriX MD, Horos, DTI studio, RadiAnt, FreeSurfer, TeraRecon, MicroDICOM, 3D Slicer, etc.
    • Capability of utilizing web-based software such as MRIcloud and volBrain.
    • In-house server connected to Ambra Health which is a Medical Image Cloud. It allows the computer stations to receive de-identified images from Memorial Herman System and other outside healthcare sites upon IRB approvals.

Books

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Academic papers:

1. Slopis JM, Arevalo O, Bell CS, Hebert AA, Northrup H, Riascos RF, Samuels JA, Smith KC, Tate P, Koenig MK. Treatment of Disfiguring Cutaneous Lesions in Neurofibromatosis-1 with Everolimus: A Phase II, Open-Label, Single-Arm Trial. Drugs R D. 2018 Dec;18(4):295-302. doi: 10.1007/s40268-018-0248-6 PMID: 30284154

2. Ballester L, Guangrong L, Zorofchian S, Vantaku V, Putluri V, Yan Y, Arevalo O, Riascos R, Sreekumar A, Esquenazi Y, Putluri N, Zhu J. Analysis of cerebrospinal fluid metabolites in patients with primary or metastatic central nervous system tumors. Acta Neuropathol Commun. 2018;6(1):85. doi:10.1186/s40478-018-0588-z

3. Jenner ZB, Husein N, Riascos RF, Esquenazi Y. Orbital and nasal meningoencephaloceles secondary to chronic hydrocephalus: A rare cause of bilateral proptosis. 2018 June 8 doi: 10.1177/1971400918778145

4. Nguyen QB, Amato R, Riascos RF, Ballester L, Tandon N, Blanco A, Esquenazi Y. Fluciclovine, Anti-1-amino-3-[ 18 F]-fluorocyclobutane-1-carboxylic acid: A Novel Radiotracer for Meningioma. 2018 August, doi: 10.1016/j.wneu.2018.07.231

5. Giancardo L, Arevalo-Espejo O, Tenreiro A, Riascos R, Bonfante E. MRI Compatibility: Automatic Brain Shunt Valve Recognition using Feature Engineering and Deep Convolutional Neural Networks. Sci Rep. 2018;8(1):16052. doi:10.1038/s41598-018-34164-6.

6. Lee JK, Koppelmans V, Riascos RF, Hasan KM, Pasternak O, Mulavara AP, Bloomberg JJ, Seidler RD. Spaceflight-Associated Brain White Matter Microstructural Changes and Intracranial Fluid Redistribution. JAMA Neurol. 2019 Jan 23. doi: 10.1001/jamaneurol.2018.4882. [Epub ahead of print] PMID: 30673793

7. Riascos R, Kamali A, Hakimelahi R, Irungu B, Rabiei P, Seidler R, Behzad B, Kramer L, Hasan K. Longitudinal Analysis of Quantitative Brain MRI in Astronauts Following Microgravity Exposure. Journal of Neuroimaging. 2019;29(3):323-330. doi:10.1111/jon.12609.

8. Arevalo O, Soto C, Rabiei P, Kamali A, Ballester L, Esquenazi Y, Zhu J, Riascos R. Assessment of glioblastoma response in the era of bevacizumab: Longstanding and emergent challenges in the imaging evaluation of pseudoresponse. Front Neurol. 2019;10:460. doi:10.3389/fneur.2019.00460. eCollection 2019. Review. PMID: 31133966

9. Arevalo O, Riascos R, Rabiei P, Kamali A, Nelson F. Standardizing Magnetic Resonance Imaging Protocols, Requisitions, and Reports in Multiple Sclerosis: An Update for Radiologist Based on 2017 Magnetic Resonance Imaging in Multiple Sclerosis and 2018 Consortium of Multiple Sclerosis Centers Consensus Guidelines. J Comput Assist Tomogr. 2019;43(1):1-12. doi:10.1097/RCT.000000000000076.

10. Ali F, Arevalo O, Zorofchian S, Patrizz A, Riascos R, Tandon N, Blanco A, Ballester L, Esquenazi Y. Cerebral Radiation Necrosis: Incidence, Pathogenesis, Diagnostic Challenges, and Future Opportunities. Curr Oncol Rep. 2019;21(8):66. doi:10.1007/s11912-019-0818-y. Review. PMID: 31218455

11. Bonfante E, Calle S, Solomon N, Jagolino A, Cai C, Arevalo-Espejo O, Riascos R, Sitton C. Development of a Standardized Grading Scale for Atherosclerotic Disease of the Head and Neck. J Comput Assist Tomogr. 2019; Publish Ahead of Print. doi:10.1097/RCT.0000000000000880

12. Haque M, Gabr R, Hasan K, George S, Arevalo O, Zha A, Alderman S, Jeevarajan J, Mas M, Zhang X, Satani N, Friedman E, Sitton C, Savitz S. Ongoing Secondary Degeneration of the Limbic System in Patients With Ischemic Stroke: A Longitudinal MRI Study. Front Neurol. 2019;10. doi:10.3389/fneur.2019.00154

13. Ruiz D, Arevalo O, Ballester L, Riascos R. Isolated Rosai-Dorfman disease of the central nervous system. Case report and review of the literature. Rev. Colomb. Radiol. 2019; 30(1): 5094-7

14. Long MK, Arevalo O, Ugalde IT. Case Series of Adolescents with Stroke-Like Symptoms Following Head Trauma. J Emerg Med. March 2019. doi:10.1016/j.jemermed.2019.01.029

15. Haque M, Gabr R, George S, Boren S, Arevalo O, Alderman S, Narayana P, Hasan K, Friedman E, Sitton C, Savitz S. Serial Cerebral Metabolic Changes in Patients with Ischemic Stroke Treated With Autologous Bone Marrow Derived Mononuclear Cells. Front Neurol. 2019;10. doi:10.3389/fneur.2019.00141

16. Nissen AP, Ocasio L, Tjaden BL Jr, Sandhu HK, Riascos RF, Safi HJ, Estrera AL, Charlton-Ouw KM. Imaging characteristics of acute type A aortic dissection and candidacy for repair with ascending aortic endografts. J Vasc Surg. 2019 May 27. pii: S0741-5214(19)31011-0. doi: 10.1016/j.jvs.2019.04.438. [Epub ahead of print]
PMID: 31202543

 

Scientific Presentations:

1. S Khanpara, D Ruiz-Pardo, S C Spence, O C West, R Riascos. Incidence and patterns of cervical spine injuries on CT: A study in a level I trauma center. Presented as Oral Scientific Paper in RSNA 2018, Chicago, IL. November 25-30, 2018.

2. Reddy S, Friedman E, Wu T, Cai C, Arevalo O, Sitton C, Savitz S. Stroke Severity and Collaterals are Associated with Infarct Progression During Inter-Facility Transfer for Endovascular Thrombectomy. Presented as Oral Scientific paper in the International Stroke Conference AHA 2019, Honolulu, Hawaii. February 6-8, 2019.

3. Patel RR, Khanpara S, Hochsztein J, Riascos RF, Shanmuganathan K, Castillo M, Ortiz AO. Penetrating Spine Trauma in the Civilian Population. Presented at ASSR 2019 Annual Symposium, Miami, FL. February 20-24, 2019.

4. Khanpara S, McCarty JL, Schmitt K, Stark J, West OC, Riascos R. Atlanto-occipital distraction injuries in survivors. Associated ligamentous, spinal cord and blunt cerebrovascular injury. Presented at ASSR 2019 Annual Symposium, Miami, FL. February 20-24, 2019.

5. Arevalo O, Ocasio L, Bledsoe M, Zhang X, Lugo A, Soto C, Calle S, Esquenazi Y, Ballester L, Zhu J, Blanco A, Riascos R, Kamali A. Use of Quantitative Dynamic Susceptibility Contrast (DSC) MRI in Differentiating Between Glioblastoma and Primary Central Nervous System Lymphoma. Presented as Oral Scientific Paper in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019.

6. S Calle, E Bonfante Mejia, G Simmons, J Rogers, C Sitton, H Katrina, S Fletcher, R Riascos, R Patel. Postnatal Intracranial Findings Following Fetal Repair of Spinal Dysraphisms: A Retrospective Review. Presented as Oral Scientific Paper in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019.

7. R Guillory, F Kebbel, P Rabiei, R Riascos, J ZHu, Y Esquenazi, R Patel, A Kamali. Measurement of ADC Values to Differentiate Tumefactive Active Demyelinating Lesions from Primary CNS Lymphoma and Glioblastoma. Presented as Oral Scientific Paper in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019.

8. Rogers, C Sitton, G Simmons, S Calle, K Hughes, S Fletcher, R Riascos, R Patel, E Bonfante Mejia. Postnatal Spine Findings Following Fetal Repair of Spinal Dysraphism: A Retrospective Review. Presented as Oral Scientific Paper in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019

9. A Kamali, K Sullivan, P Rabiei, R Patel, A Sahihi, R Riascos. Measurement of the transverse diameter of the meckel’s cave, a very specific finding for diagnosis of the idiopathic intracranial hypertension/pseudotumor cerebri. Presented as Oral Scientific Paper in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019

10. P Rabiei, B.B. Behzad, K.M. Hasan, A Kamali, L.A. Kramer, R Riascos. Pre- and Post-Flight Size Comparison of the Major Dural Venous Sinuses in Astronauts. Presented as Oral Scientific Paper in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019

11. R Riascos, A Kamali, R Hakimelahi, B.M. Irungu, P.Rabiei, R.D. Seidler, B.B. Behzad, Z Keser, L.A. Kramer, K.M. Hasan. Longitudinal Analysis of Quantitative Brain MRI in Astronauts Following Microgravity Exposure. Presented as Oral Scientific Paper in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019.

12. O Arevalo, S Calle, S Khanpara, A Kamali, X Zhang, C Soto, Y Esquenazi, L Ballester, R Riascos. Primary central nervous system lymphoma and glioblastoma: differentiation based on venous architectural distortion in high-resolution susceptibility weighted imaging. Presented as Oral Scientific Paper in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019.

 

Educational Presentations:

1. Patel, R., Kamali, A., Bonafante, E., Valenzuela, R., Calle, S., Enciso, Riascos, R. Imaging approach in the preoperative evaluation of laryngeal cancer. Presented at ASHNR 52nd annual meeting, Savannah, Georgia. September 26-30, 2018.

2. Kamali A., Hasan KM., Riascos, R. Revealing the Ventral and Dorsal Language Streams of the Human Brain. Abstract ID: 18009764. Accepted for electronic presentation for the RSNA 104th Scientific Assembly and Annual Meeting, November 25 – November 30, 2018, McCormick Place, Chicago, Illinois

3. Patel R, Arevalo O, Khanpara S, Kamali A, Bonfante E, Desai N. Simplified MRI based approach to brain myelination and pediatric metabolic disorders: Case based review. Presented as Educational electronic exhibit in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019

4. Arevalo O, Khanpara S, Soto C, Kamali A, Ballester L, Riascos R, Patel R. Genotyping in Pediatric Brain Tumors, Should Neuroradiologists Care About It in The Daily Practice? A Case-Based Review of the WHO-2016 Classification of Medulloblastomas. Presented as Educational electronic exhibit in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019

5. Arevalo O, Galvis Vega S, Calle S, Soto C, Esquenazi Y, Ballester L, Blanco A, Riascos R. Anaplastic Meningioma Associated with Leptomeningeal Carcinomatosis. Presented as Excerpta in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019

6. Galvis Vega S, Arevalo O, Soto C, Riascos R, Kamali A. Lupus-associated Vasculitis Mimicking an Invasive Sinonasal and Orbital Infection. Presented as Excerpta in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019

7. Gao M, Arevalo O, Soto C, Khanpara S, Kamali A, Esquenazi Y, Ballester L, Blanco A, Riascos R. Pilocytic Astrocytoma Manifesting as a Cystic Mass of the Third Ventricle. Presented as Excerpta in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019

8. Arevalo O, Patel R, Kamali A, Khanpara S, Bonfante E, Chourasia N. An Extremely Rare Case of Longitudinal Extensive Transverse Myelitis (LETM) in Children: Acute spinal cord infarction secondary to varicella zoster virus (VZV). Presented as Excerpta in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019

9. Arevalo O, Khanpara S, Patel R. Hirayama disease, when dynamic MRI of the cervicothoracic junction matters. Presented as Excerpta in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019

10. H Banker, O Arevalo, C Soto, E Supsupin, A Kamali, S Khanpara, Y Esquenazi, L Ballester, R Riascos. Isolated Neuro-sarcoidosis Manifesting as Gyriform Punctate Calcifications and Cerebral Venous Engorgement. Presented as Excerpta in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019

11. L Ocasio, A Kamali, O Arevalo, R Patel, R Riascos. A rare case of multiple capillary telangiectasia associated with developmental venous anomalies. Presented as Excerpta in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019

12. R Jordan, J Rogers, S Khanpara, R Patel, R Riascos, A Kamali. Isolated Oculomotor Neuropathy – a case report. Presented as Excerpta in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019

13. K Sullivan, J Roger, R Riascos, R Patel, A Kamali. A Rare Case of Central Posterior Reversible Encephalopathy Syndrome. Presented as Excerpta in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019

14. R Guillory, F Kebbel, C Sitton. Intracranial hypertension leading to trigeminal nerve herniation into a petrous apex cephalocele. Presented as Excerpta in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019

15. J Rogers, C Sitton. Ferumoxytol: A Potential Neuroimaging Pitfall. Presented as Excerpta in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019

16. R Patel, O Arevalo, A Kamali, S Khanpara, E Bonfante-Mejia, N Chourasia. An Extremely Rare Case of Longitudinal Extensive Transverse Myelitis (LETM) in Children: Acute spinal cord infarction secondary to varicella zoster virus (VZV). Presented as Excerpta in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019

17. A Kamali, T Roberson, R Patel, R Riascos. Unusual Cases Demonstrating Leptomeningeal Enhancement. Presented as Educational electronic exhibit in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019

18. A Kamali, N Doyle, P Rabiei, A Lugo, J Zhu, Y Esquenazi, R Patel, R Riascos. Differentiating the abscess from necrosis by ADC value measurement. Presented as Educational electronic exhibit in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019

19. E Supsupin, S Calle. Spinal Venous System – Anatomy and Practical Applications. Presented as Educational electronic exhibit in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019

20. R Patel, S Khanpara, H Banker, A Kamali, R Riascos, E Bonfante-Mejia, R Zvanvanja, M Grieves. Pediatric Head and Neck Vascular Anomalies Based on Most Current Revised Classification of International Society for the Study of Vascular Anomalies (ISSVA): A Radiologist’s Primer. Presented as Educational electronic exhibit in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019

21. R Patel, S Khanpara, O Arevalo, A Kamali, E Bonfante-Mejia, N Desai. Simplified MRI Based Approach to Brain Myelination and Pediatric Metabolic Disorders: Case Based Review. Presented as Educational electronic exhibit in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019

 

Poster presentations:

1. Patel, R, Khanpara, S, Bonfante, E, Kamali, A, Riascos, R, Bhattacharjee, M, Shah, M. Lessons learnt from Multidisciplinary Pediatric Epilepsy Conference: Multi-modality Imaging review of Pediatric Epilepsy with Histopathological Correlation. Presented as Poster in American Society of Pediatric Neuroradiology 1st Annual Meeting, New Orleans, LA. January 18-20, 2019.

2. Patel, P, Khanpara, S, Bawa, P, Bonfante, E, Kamali, A, Riascos, R, Sitton, C. Multimodality Case Based Imaging Review of Pediatric Strokes. Presented as Poster in American Society of Pediatric Neuroradiology 1st Annual Meeting, New Orleans, LA. January 18-20, 2019.

3. Patel, P, Khanpara, S, Banker, H, Kamali, A, Bonfante, E, Riascos, R, Zvavanjanja, R, Grieves, M. Pediatric Head and Neck Vascular Anomalies Based on Most Current Revised Classification of International Society for the Study of Vascular Anomalies (ISSVA): A Radiologist’s Primer. Presented as Poster in American Society of Pediatric Neuroradiology 1st Annual Meeting, New Orleans, LA. January 18-20, 2019.

4. Patel R, Khanpara S, Bawa P, Kamali A, Bonfante E, Riascos R, Chinapuvvula R. AOSpine Upper Cervical Spine Classification: What Radiologist Need to Know. A case-based review from a neuroradiologist’s prospective. Presented as Electronic Scientific Poster in ASSR 2019 Annual Symposium, Miami, FL. February 20-24, 2019.

5. Bawa P, Khanpara S, Chinapuvvula R, Gupta P, Patel R. AOSpine Sacral Classification: What Radiologist Need to Know. A case-based review from a neuroradiologist’s prospective. Presented as Electronic Scientific Poster in ASSR 2019 Annual Symposium, Miami, FL. February 20-24, 2019.

6. A Kamali, S Choi, K Meissner, R Patel, R Riascos. Revealing the Anatomical Connectivity of the thalamo-limbic connections of the Human Limbic System. Presented as Electronic Scientific Poster in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019

7. A Kamali, P Rabiei, K Younes, R Riascos, R Patel, K Hasan. Quantitative Diffusion Tensor Imaging and Ventricular/Sulcal CSF Volumetry: A Marker to Diagnose the Normal Pressure Hydrocephalus. Presented as Electronic Scientific Poster in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019

8. O Arevalo, S Calle, S Khanpara, A Kamali, X Zhang, C Soto, Y Esquenazi, L Ballester, R Riascos. Primary central nervous system lymphoma and glioblastoma: differentiation based on venous architectural distortion in high-resolution susceptibility weighted imaging. Presented as Scientific Poster in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019

9. Arevalo O, Calle S, Khanpara S, Kamali A, Zhang X, Soto C, Esquenazi Y, Ballester L, Riascos R. Primary central nervous system lymphoma and glioblastoma: differentiation based on venous architectural distortion in high-resolution susceptibility weighted imaging. Presented as a Printed Scientific Poster in ASNR 57th Annual Meeting, Boston, MA. May 18-23, 2019

 

Book chapters:

1. Patel R, Arevalo O, Sandberg DI. Enlarged Subarachnoid Spaces, In: Incidental Findings in Neuroimaging. In press
2. Patel R, Arevalo O, Sandberg DI. Mega cisterna magna, In: Incidental Findings in Neuroimaging. In press
3. Patel R, Arevalo O, Sandberg DI. Filum terminale fibrolipoma, In: Incidental Findings in Neuroimaging. In press
4. Patel R, Arevalo O, Sandberg DI. Ventriculus terminalis, In: Incidental Findings in Neuroimaging. In press
5. Patel R, Arevalo O, Sandberg DI. Prominent central canal, In: Incidental Findings in Neuroimaging. In press
6. Patel R, Arevalo O, Sandberg DI. Low lying conus, In: Incidental Findings in Neuroimaging. In press
7. Arevalo O, Riascos R, Westmark K. Approach to the incidental solitary lytic vertebral lesion detected on MRI, In: Incidental Findings in Neuroimaging. In press
8. Arevalo O, Riascos R, Westmark K. Incidental Sclerotic Bone Lesions, In: Incidental Findings in Neuroimaging. In press
9. Khanpara S, Rabiei P, Riascos R, Westmark K. Arachnoid Granulation, In: Incidental Findings in Neuroimaging. In press
10. Khanpara S, Rabiei P, Riascos R, Westmark K. Asymmetric Lateral Ventricles, In: Incidental Findings in Neuroimaging. In press
11. Khanpara, S, Rabiei P, Riascos R, Westmark K. Basal Ganglia/Dentate Nucleous Calcification, In: Incidental Findings in Neuroimaging. In press
12. Khanpara S, Rabiei P, Riascos R, Westmark K. Cavum septum pellucidum/Cavum septum vergae/Cavum velum interpositum, In: Incidental Findings in Neuroimaging. In press
13. Khanpara S, Rabiei P, Riascos R, Westmark K. Choroid fissure cyst, In: Incidental Findings in Neuroimaging. In press
14. Khanpara S, Rabiei P, Riascos R, Westmark K. Empty sella configuration, In: Incidental Findings in Neuroimaging. In press
15. Khanpara S, Rabiei P, Riascos R, Westmark K. Hyperostosis frontalis interna, In: Incidental Findings in Neuroimaging. In press
16. Khanpara S, Rabiei P, Riascos R, Westmark K. Prominant perivascular spaces, In: Incidental Findings in Neuroimaging. In press
17. Khanpara S, Rabiei P, Riascos R, Westmark K. Simple Pineal Cyst, In: Incidental Findings in Neuroimaging. In press
18. Khanpara S, Rabiei P, Riascos R, Westmark K. High riding jugular bulb, In: Incidental Findings in Neuroimaging. In press