Long H. Tu, MD, PhD
Assistant Professor of Radiology and Biomedical ImagingDownloadHi-Res Photo
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Radiology & Biomedical Imaging
20 York Street, South Pavilion, 2nd Floor
New Haven, CT 06520
United States
About
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Titles
Assistant Professor of Radiology and Biomedical Imaging
Biography
Dr. Long H. Tu is an emergency/trauma radiologist, neuroradiologist, and physician-scientist at Yale School of Medicine. Dr. Tu is a graduate of Yale's Diagnostic Radiology residency and Neuroradiology fellowship, where he served as chief resident and chief fellow respectively. He subsequently completed clinical and research fellowships at Yale in Emergency/Trauma Radiology.
Dr. Tu serves as co-Medical Director of Clinical Affairs in Radiology, Director of Resident Education in Neuroradiology, and Deputy Director of Emergency Neuroradiology. Dr. Tu directs a multi-disciplinary, multi-site research group (the “TL|DR”) which advances stroke diagnosis, imaging stewardship, and workflow efficiency. Dr. Tu’s ongoing research addresses the role of imaging in stroke prevention, healthcare cost, and population health.
Dr. Tu is the author/editor of 4 textbooks, including the widely-read texts “Search Pattern” and “How to be a More Efficient Radiologist.” He the author/co-author of more than 100 published articles, chapters, and reviews. Dr. Tu has provided more than 200 lectures/presentations at professional meetings and produced more than 60 online lectures. Dr. Tu has designed more than 100 reporting, clinical decision support, workflow automation tools in active use at Yale as well as throughout the United States. He has served as primary mentor to more than 50 post-doctoral researchers, trainees, and students.
Last Updated on March 17, 2026.
Appointments
Radiology & Biomedical Imaging
Assistant ProfessorPrimary
Other Departments & Organizations
- All Institutions
- Clinical Radiology
- Neuroradiology
- Radiology & Biomedical Imaging
- Tu Lab
- Yale Medicine
- Yale New Haven Health System
Education & Training
- PhD
- Yale Graduate School of Arts and Sciences (2023)
- Research Fellow, Emergency Radiology
- Yale School of Medicine (2023)
- Clinical Fellow, Emergency Radiology
- Yale School of Medicine (2022)
- Chief Fellow, Neuroradiology
- Yale New Haven Hospital (2021)
- Chief Resident, Radiology
- Yale New Haven Hospital (2020)
- Resident, Radiology
- Yale New Haven Hospital (2019)
- Internship
- Kaweah Delta Health District (2016)
- MD
- University of Connecticut School of Medicine (2009)
Research
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Overview
Medical Research Interests
Costs and Cost Analysis; Data Science; Diagnostic Errors; Education, Medical; Education, Medical, Graduate; Efficiency; Health Care Economics and Organizations; Ischemic Stroke; Machine Learning; Quality Improvement; Stroke
Public Health Interests
Health Care Quality, Efficiency; Health Informatics; Implementation Science
ORCID
0000-0002-2419-5581- View Lab Website
Tu Lab | Diagnostic Research
Research at a Glance
Yale Co-Authors
Frequent collaborators of Long H. Tu's published research.
Publications Timeline
A big-picture view of Long H. Tu's research output by year.
Research Interests
Research topics Long H. Tu is interested in exploring.
Ajay Malhotra, MBBS, MD, MMM, FACR
Howard Forman, MD, MBA, FACR
Arjun Venkatesh, MD, MBA, MHS
Amit Mahajan, MD, MBBS
Ted Melnick, MD, MHS
Kevin Sheth, MD, FAHA
58Publications
400Citations
Stroke
Quality Improvement
Diagnostic Errors
Publications
2025
Trends in Head CT Use in US Emergency Department Patients From 2007 to 2022
Dylla L, Krothapalli N, Tu L, Payabvash S, Burke J, Sheth K, Wira C, de Havenon A. Trends in Head CT Use in US Emergency Department Patients From 2007 to 2022. Neurology 2025, 105: e214347. PMID: 41259742, DOI: 10.1212/wnl.0000000000214347.Peer-Reviewed Original ResearchCitationsAltmetricMeSH Keywords and ConceptsConceptsHead CT scanHead CTCT scanHead CT useNational Hospital Ambulatory Medical Care SurveyCT useED encountersRetrospective cohort analysisMultivariate logistic regressionEmergency department patientsLength of stayPatient agePatient demographicsCT usageNeurological emergencyCohort analysisDepartment patientsED delaysPatientsRural hospitalsEmergency departmentED admissionLogistic regressionStudy exposureCare SurveyApplication of Deep Learning for Predicting Hematoma Expansion in Intracerebral Hemorrhage Using Computed Tomography Scans: A Systematic Review and Meta-Analysis of Diagnostic Accuracy
Ahmadzadeh A, Ashoobi M, Broomand Lomer N, Elyassirad D, Gheiji B, Vatanparast M, Bathla G, Tu L. Application of Deep Learning for Predicting Hematoma Expansion in Intracerebral Hemorrhage Using Computed Tomography Scans: A Systematic Review and Meta-Analysis of Diagnostic Accuracy. La Radiologia Medica 2025, 130: 1973-1985. PMID: 40932678, DOI: 10.1007/s11547-025-02089-6.Peer-Reviewed Original ResearchCitationsConceptsQuality Assessment of Diagnostic Accuracy Studies-2Hematoma expansionIntracerebral hemorrhageDiagnostic likelihood ratiosComputed tomographySubgroup analysisPositive diagnostic likelihood ratioMeta-analysis of diagnostic accuracyIntensive blood pressure controlDiagnostic Accuracy Studies-2Intracerebral hemorrhage patientsDeeks' asymmetry testDiagnostic odds ratioArea under the curveComputed tomography scanEffects of individual studiesBlood pressure controlNegative diagnostic likelihood ratiosComprehensive literature searchInter-group differencesResultsTwenty-two studiesRadiomics scoreTomography scanDiagnostic accuracyHemostatic drugsA Systematic Approach to the Evaluation of Lumbosacral Plexus MRI: Indications, Protocol Anatomy, and Pathology.
Rahmani S, Hamilton C, de Oliveira Santo I, Nguyen J, Zaree O, Kenny-Howell C, Kirsch C, Tu L. A Systematic Approach to the Evaluation of Lumbosacral Plexus MRI: Indications, Protocol Anatomy, and Pathology. American Journal Of Neuroradiology 2025, ajnr.a8976. PMID: 40854685, DOI: 10.3174/ajnr.a8976.Peer-Reviewed Original ResearchAltmetricConceptsPlexus magnetic resonance imagingMagnetic resonance imagingLumbosacral plexusTurbo spin echoChronic inflammatory demyelinating polyneuropathyVolumetric Interpolated Breath-hold ExaminationInflammatory demyelinating polyneuropathySpin echoAcquisition single-shot turbo spin-echoPeripheral nerve disordersSingle-shot turbo spin-echoHalf-Fourier acquisition single-shot turbo spin-echoDiffusion-weighted imagingMagnetic resonance imaging protocolShort-tau inversion recoveryBreath-hold examinationTau inversion recoveryApplication-optimized contrastsFlip angle evolutionsSteady-state free precessionCompressive etiologyDisparities in MRI and TRUS for prostate cancer detection: A systematic review and meta-analysis of 94,020 cases
Bahrami A, Tu L, Ghanikolahloo M, Sadeghi Z, Tafazolimoghadam A, Farzan M, Fathi M, Khakpour Y, Tavasol A, Alipour M, Shoja A, Azami M, Clifford T, Hajibeygi R, Iftikhar S. Disparities in MRI and TRUS for prostate cancer detection: A systematic review and meta-analysis of 94,020 cases. Current Problems In Diagnostic Radiology 2025, 55: 148-169. PMID: 40820058, DOI: 10.1067/j.cpradiol.2025.08.002.Peer-Reviewed Original ResearchAltmetricConceptsUtilization of magnetic resonance imagingMagnetic resonance imagingTransrectal ultrasoundPC diagnosisSystematic reviewProstate cancerMeta-analysisWhite patientsProstate cancer detectionWeb of ScienceHealth policyRacial disparitiesBegg's testEmbase databasesCancer deathPrevalent cancersBlack patientsPublication biasRadiology utilizationSystematic searchResonance imagingRelevant articlesPatientsImaging utilizationDisparitiesCharacterizing iron rim lesions in multiple sclerosis: a biomarker for disease activity and progression: a systematic review and meta-analysis
Motamedgorji N, Bahrami A, Taher H, Mohamedbaqer Easa A, Salehi S, Tafazolimoghadam A, Farzan M, Sadeghi Z, Mofidinaeini S, Hajibeygi R, Khakpour Y, Fathi M, Zoghi A, Tu L. Characterizing iron rim lesions in multiple sclerosis: a biomarker for disease activity and progression: a systematic review and meta-analysis. Neuroradiology 2025, 67: 2249-2265. PMID: 40689996, DOI: 10.1007/s00234-025-03663-5.Peer-Reviewed Original ResearchCitationsAltmetricConceptsLong-term clinical implicationsWhite matter lesionsClinical outcomesSusceptibility-weighted imagingDisease-modifying treatmentsStandardized mean differenceMS patientsMultiple sclerosisPrognostic valueMeta-analysisResponse to disease-modifying treatmentsRim lesionsRelative riskHigh-dose treatmentRelapse rate ratioResultsThis meta-analysisRoutine medical evaluationIron rim lesionsBrain volumeChronic active inflammationAdvanced MRI techniquesSystematic reviewWhite matter lesion loadMethodsA thorough searchFrequent relapsesReply
Kenny-Howell C, Dixe de Oliveira Santo I, Wira C, de Havenon A, Tu L. Reply. Journal Of The American College Of Radiology 2025, 22: 1110-1111. PMID: 40499627, DOI: 10.1016/j.jacr.2025.06.011.Peer-Reviewed Original ResearchDiagnostic yield of an abbreviated MRI protocol in the evaluation of dizziness in the emergency department, a single institutional experience
Shareef F, Tu L, Neupane A, Siddique Z, Joshi R, Melnick E, Wira C, Mahajan A. Diagnostic yield of an abbreviated MRI protocol in the evaluation of dizziness in the emergency department, a single institutional experience. Emergency Radiology 2025, 32: 559-568. PMID: 40471503, DOI: 10.1007/s10140-025-02349-y.Peer-Reviewed Original ResearchCitationsConceptsAbbreviated MRI protocolDiagnostic yieldIntracranial pathologyEmergency departmentAcute findingsMRI protocolEvaluation of dizzinessMethodThis retrospective studyDetecting intracranial pathologySignificant intracranial pathologyAxial DWIAxial FLAIRProtocol MRIAbbreviated protocolSupratentorial pathologySWI sequencesMRI findingsRetrospective studyUrgent care settingsAdult patientsCentral etiologyAcute dizzinessInfratentorial siteInstitutional experienceInfarct characteristicsUtilization, detection rate, and pathologies on lumbosacral plexus MRI: a 25-year institutional experience
Rahmani S, Hamilton C, Nguyen J, Zaree O, Kenny-Howell C, Kirsch C, Tu L. Utilization, detection rate, and pathologies on lumbosacral plexus MRI: a 25-year institutional experience. Clinical Imaging 2025, 125: 110529. PMID: 40494183, DOI: 10.1016/j.clinimag.2025.110529.Peer-Reviewed Original ResearchConceptsPlexus MRIAbnormal findingsImaging findingsClinical indicationsPlexus magnetic resonance imagingPredictors of abnormal findingsMRI examsAssociated with abnormal findingsAbnormal radiological featuresConfounding clinical featuresTertiary referral centerAbnormal imaging findingsAbnormal MRI findingsEvaluated clinical indicatorsNerve sheath tumorsClinically relevant pathologyMultivariate logistic regressionPercentage of casesMagnetic resonance imagingInfectious/inflammatory etiologyLumbar radiculopathySheath tumorsLumbosacral plexopathyPatient ageReferral centerThe Value of Radiology Consultation: Effort Allocation, Clinical Impact, and Untapped Opportunities
Iftikhar S, Rahmani S, Zaree O, Kertam A, Farquhar T, Tu L. The Value of Radiology Consultation: Effort Allocation, Clinical Impact, and Untapped Opportunities. Journal Of The American College Of Radiology 2025, 22: 887-896. PMID: 40204166, DOI: 10.1016/j.jacr.2025.04.006.Peer-Reviewed Original ResearchCitationsAltmetricConceptsConsulting workWorking hoursArtificial intelligence-based technologiesValue-based reimbursement modelsCurrent Procedural Terminology billing codesEffort allocationUntapped opportunitiesProcedural terminology billing codesCost of timeImpact patient careFormal mechanismsAd hocFuture of radiologyNoninterpretive tasksNon-face-to-facePatient careGroup practiceReimbursement modelsConsultation codesBilling codesInterpretation of imagesIndividual radiologistsMultidisciplinary conferenceCodeEquitable reimbursementCorrection to: Detectability of acute ischemic stroke with thin (3 mm) axial versus thin (3 mm) coronal diffusion-weighted imaging in patients presenting to the emergency department with acute dizziness
Lozano R, Shareef F, Neupane A, Siddique Z, Joshi R, Pasquini L, Tu L, Mahajan A. Correction to: Detectability of acute ischemic stroke with thin (3 mm) axial versus thin (3 mm) coronal diffusion-weighted imaging in patients presenting to the emergency department with acute dizziness. Emergency Radiology 2025, 32: 485-485. PMID: 40106121, DOI: 10.1007/s10140-025-02333-6.Peer-Reviewed Original Research
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Overview
Dr. Long H. Tu, MD, PhD, is a specialist in neuroradiology and emergency radiology. He has specific expertise in advanced imaging techniques and their application to acute neurologic conditions, such as ischemic stroke. Dr. Tu is dedicated to enhancing patient care in emergency settings by improving the speed, accuracy, and quality of medical imaging.
In his academic role, he serves as an assistant professor in the Department of Radiology and Biomedical Imaging at Yale School of Medicine. Dr. Tu teaches medical trainees and students, directs a research group, and writes both educational and scientific works for a broader medical audience.
Clinical Specialties
Emergency Radiology; Neuroradiology
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Radiology & Biomedical Imaging
20 York Street, South Pavilion, 2nd Floor
New Haven, CT 06520
United States