Office Info

VA Greater Los Angeles Healthcare, Imaging Service, 113001 Wilshire Blvd. Los Angeles, CA 90073

Craig Morioka, PhD

Adjunct Professor, Department of Radiological Sciences


I am currently working at the Veterans Affairs Greater Los Angeles Healthcare System with both operational and research responsibilities. My research concentrates on structuring textual and image data for improved efficiency of data annotation, information extraction, and summarization. We utilize data mining algorithms (naive Bayes, logistic regression, Bayesian networks, support vector machines, and decision trees) to classify clinical text as well as documents to improve quality control and efficiency within radiology. We have also developed JAVA based Structured Reporting modules utilizing the DICOM standard so to interact with commercial PACS systems. In addition to my research, I have consulted and developed software for Imaging Informatics companies.



Taylor SL, Herman PM, Marshall NJ, Zeng Q, Yuan A, Chu K, Shao Y, Morioka C, Lorenz KA. Use of Complementary and Integrated Health: A Retrospective Analysis of U.S. Veterans with Chronic Musculoskeletal Pain Nationally. J Altern Complement Med. 2019 Jan;25(1):32-39. doi: 10.1089/acm.2018.0276. Epub 2018 Oct 12. PMID: 30312109.


Shao Y, Taylor S, Marshall N, Morioka C, Zeng-Treitler Q. Clinical Text Classification with Word Embedding Features vs Bag-of-Words. The 5th Workshop on Big Data Analytic Technology for Bioinformatics and Health Informatics IEEE BigData Dec. 2018 conference, 2874-2878.


Morioka C, Meng F, Taira R, Sayre J, Zimmerman P, Ishimitsu D, Huang J, Shen L, El-Saden S. Automatic Classification of Ultrasound Screening Examinations of the Abdominal Aorta. J Digit Imaging. 2016 Dec;29(6):742-748. doi: 10.1007/s10278-016-9889-6. PMID: 27400914; PMCID: PMC5114229.

Pan P, Huang J, Morioka C, Hathout G, El-Saden SM. Cost analysis of vestibular schwannoma screening with contrast-enhanced magnetic resonance imaging in patients with asymmetrical hearing loss. J Laryngol Otol. 2016 Jan;130(1):21-4. doi: 10.1017/S0022215115002431. Epub 2015 Sep 14. PMID: 26365591.


Meng F, Morioka CA. Automating the generation of lexical patterns for processing free text in clinical documents. J Am Med Inform Assoc. 2015 Sep;22(5):980-6. DOI: 10.1093/jamia/ocv012. Epub 2015 May 14. PMID: 25977405; PMCID: PMC4986670. PDF


Meng F, Morioka CA, El-Saden S. Determining word sequence variation patterns in clinical documents using multiple sequence alignment. AMIA Annu Symp Proc. 2011;2011:934-43. Epub 2011 Oct 22. PMID: 22195152; PMCID: PMC3243120PDF


Bui AAT, Morioka CA. Information Systems & Architectures. Medical Imaging Informatics. Springer; 2010. p. 93-137.


Morioka CA, El-Saden S, Pope W, Sayre J, Duckwiler G, Meng F, Bui AAT, Kangarloo H. A methodology to integrate clinical data for the efficient assessment of brain-tumor patients. Inform Health Soc Care. 2008 Mar;33(1):55-68. DOI: 10.1080/17538150801956762. PMID: 18604762.


Tameem HZ, Morioka CA, Bennett D, El-Saden S, Sinha U, Taira RK, Bui AAT, Kangarloo H. Development of an indexed integrated neuroradiology reports for teaching file creation. Proceedings of SPIE. San Diego, CA: SPIE Medical Imaging; 2007.
Bashyam V, Morioka CA, El-Saden S, Bui AAT, Taira RK. Identifying relevant medical reports from an assorted report collection using the naı̈ve Bayes classifier and the UMLS. Indian Journal of Medical Informatics. 2007;2.

Research Projects