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Howard Halpern

Concepts (408)

Concepts are derived automatically from a person's publications.
Concepts are listed by decreasing relevance which is based on many factors, including how many publications the person wrote about that topic, how long ago those publications were written, and how many publications other people have written on that same topic.


Name Number of Publications Most Recent Publication Publications by All Authors Concept Score Why?
Electron Spin Resonance Spectroscopy
93
2026
337
16.080
Why?
Oxygen
49
2026
801
10.550
Why?
Image Processing, Computer-Assisted
27
2025
1307
3.940
Why?
Molecular Imaging
12
2024
72
3.900
Why?
Fibrosarcoma
15
2025
89
3.520
Why?
Algorithms
23
2025
2009
3.310
Why?
Oximetry
13
2020
94
3.170
Why?
Phantoms, Imaging
25
2025
492
3.080
Why?
Tumor Hypoxia
10
2026
53
2.840
Why?
Imaging, Three-Dimensional
16
2025
632
2.820
Why?
Diagnostic Imaging
12
2021
467
1.880
Why?
Neoplasms, Experimental
10
2016
261
1.780
Why?
Spin Labels
24
2023
107
1.680
Why?
Hypoxia
10
2022
699
1.510
Why?
Radiotherapy, Intensity-Modulated
6
2025
200
1.480
Why?
Mice, Inbred C3H
20
2017
370
1.420
Why?
Neoplasms
18
2026
3334
1.400
Why?
Mice
46
2026
12697
1.220
Why?
Animals
69
2026
28902
1.190
Why?
Electrons
3
2017
52
1.160
Why?
Radiotherapy, Image-Guided
3
2018
66
1.110
Why?
Oxidation-Reduction
7
2023
419
1.050
Why?
Magnetic Resonance Imaging
18
2021
3618
1.030
Why?
Signal Processing, Computer-Assisted
5
2014
202
0.920
Why?
Tomography, X-Ray Computed
6
2024
2668
0.870
Why?
Cell Hypoxia
8
2022
191
0.820
Why?
Mammary Neoplasms, Experimental
2
2014
130
0.730
Why?
Sulfhydryl Compounds
3
2023
67
0.690
Why?
Radiotherapy Planning, Computer-Assisted
9
2025
216
0.690
Why?
Reproducibility of Results
12
2018
2787
0.670
Why?
Image Enhancement
5
2017
503
0.660
Why?
Radiotherapy, Conformal
5
2025
88
0.640
Why?
Radiation Tolerance
2
2013
179
0.630
Why?
Cell Line, Tumor
12
2026
2888
0.600
Why?
Tissue Engineering
2
2017
204
0.560
Why?
Cyclic N-Oxides
8
2013
32
0.540
Why?
Free Radicals
8
2019
72
0.540
Why?
Signal-To-Noise Ratio
6
2025
126
0.530
Why?
Radiotherapy Dosage
9
2025
479
0.510
Why?
Transplants
1
2017
43
0.510
Why?
Muscle Neoplasms
1
2017
16
0.500
Why?
Sensitivity and Specificity
9
2015
1948
0.500
Why?
Magnetic Fields
1
2016
12
0.490
Why?
Magnetic Resonance Spectroscopy
2
2017
271
0.480
Why?
Oxidative Stress
3
2023
489
0.470
Why?
Brain Neoplasms
2
2025
842
0.460
Why?
Bone Marrow
1
2017
418
0.460
Why?
Osteogenesis
1
2017
278
0.460
Why?
Computer Graphics
2
2015
99
0.450
Why?
Antigens, Neoplasm
2
2017
361
0.450
Why?
Nitrogen Oxides
8
2016
15
0.440
Why?
Image Interpretation, Computer-Assisted
3
2013
642
0.440
Why?
Computer Simulation
6
2025
1153
0.420
Why?
Partial Pressure
5
2017
47
0.420
Why?
Artifacts
3
2018
248
0.410
Why?
Diffusion Tensor Imaging
1
2014
78
0.400
Why?
Vascular Endothelial Growth Factor A
2
2013
400
0.390
Why?
Oxygen Consumption
4
2020
239
0.370
Why?
Humans
54
2026
98135
0.370
Why?
Hindlimb
4
2014
98
0.350
Why?
Hydroxyl Radical
4
2000
38
0.320
Why?
Fourier Analysis
3
2024
124
0.320
Why?
Glutathione
2
2023
108
0.310
Why?
Printing, Three-Dimensional
2
2020
53
0.280
Why?
Adenocarcinoma
5
2013
1211
0.280
Why?
Radiation-Protective Agents
2
2012
98
0.270
Why?
Carcinoma
2
2010
440
0.260
Why?
Electromagnetic Fields
4
2014
26
0.250
Why?
X-Ray Microtomography
2
2017
107
0.250
Why?
Urinary Catheterization
1
2006
40
0.240
Why?
Mice, Nude
5
2025
830
0.240
Why?
Superoxides
5
2004
76
0.220
Why?
Misonidazole
2
2022
19
0.220
Why?
Brachytherapy
1
2026
139
0.210
Why?
Half-Life
6
2017
89
0.210
Why?
Urinary Bladder
1
2006
262
0.210
Why?
Glioblastoma
2
2025
299
0.200
Why?
Data Interpretation, Statistical
3
2013
313
0.190
Why?
Pyridines
3
2000
318
0.190
Why?
Amifostine
1
2003
50
0.190
Why?
Principal Component Analysis
2
2014
170
0.190
Why?
Carcinoma, Squamous Cell
3
2022
1105
0.190
Why?
Mammals
1
2024
268
0.170
Why?
Calibration
2
2017
110
0.170
Why?
Tumor Cells, Cultured
3
2013
1028
0.170
Why?
Uterine Cervical Neoplasms
3
2020
323
0.160
Why?
Kinetics
6
2016
1476
0.160
Why?
Rabbits
2
2013
581
0.160
Why?
High-Intensity Focused Ultrasound Ablation
1
2021
54
0.160
Why?
Female
21
2020
51570
0.160
Why?
Models, Biological
2
2017
1809
0.160
Why?
Body Water
1
1999
34
0.150
Why?
Rats
7
2013
4072
0.150
Why?
Nitric Oxide
4
2009
286
0.150
Why?
Contrast Media
3
2020
1011
0.150
Why?
Tritium
2
2016
113
0.150
Why?
X-Rays
2
2006
139
0.140
Why?
Prostatic Neoplasms
7
2009
1836
0.140
Why?
Homologous Recombination
1
2019
57
0.140
Why?
Indoles
1
2000
334
0.140
Why?
Molecular Structure
5
2005
305
0.140
Why?
Radio Waves
2
2017
20
0.140
Why?
Carbon Dioxide
2
1996
202
0.130
Why?
Chitosan
1
2017
17
0.130
Why?
Gamma Rays
1
2017
72
0.130
Why?
Reperfusion Injury
1
2019
148
0.130
Why?
Free Radical Scavengers
2
2012
59
0.130
Why?
Buthionine Sulfoximine
1
2016
7
0.130
Why?
Indenes
1
2017
9
0.130
Why?
Indolequinones
1
2016
1
0.130
Why?
Deuterium
1
2017
34
0.130
Why?
Quantum Theory
1
2017
41
0.120
Why?
Tissue Distribution
2
2013
290
0.120
Why?
Disulfides
1
2016
66
0.120
Why?
Nanoparticles
1
2019
218
0.120
Why?
Kaplan-Meier Estimate
1
2018
903
0.120
Why?
Image-Guided Biopsy
1
2017
81
0.120
Why?
Gonadotropins, Pituitary
1
1995
11
0.120
Why?
Fluorocarbons
1
1996
64
0.120
Why?
Collagen
1
2017
313
0.120
Why?
Radiation-Sensitizing Agents
1
1996
98
0.120
Why?
Absorption, Radiation
1
2015
4
0.110
Why?
Genetic Therapy
2
2009
373
0.110
Why?
Skin Physiological Phenomena
1
2015
18
0.110
Why?
Radiotherapy, Computer-Assisted
1
2015
25
0.110
Why?
Cone-Beam Computed Tomography
1
2016
79
0.110
Why?
Solutions
3
2005
84
0.110
Why?
Sarcoma, Experimental
1
1994
53
0.110
Why?
Biophysical Phenomena
2
2010
125
0.110
Why?
Androgens
1
1995
164
0.110
Why?
Bone Neoplasms
1
2017
316
0.110
Why?
Positron-Emission Tomography
3
2022
354
0.110
Why?
Halothane
1
1994
5
0.100
Why?
Radiotherapy
4
2013
325
0.100
Why?
Electronics
1
2014
21
0.100
Why?
Prostate-Specific Antigen
2
1995
354
0.100
Why?
Anesthesia, Inhalation
1
1994
36
0.100
Why?
Antigens, Polyomavirus Transforming
1
2014
48
0.100
Why?
Anisotropy
1
2014
61
0.100
Why?
Mammary Tumor Virus, Mouse
1
2014
64
0.100
Why?
ROC Curve
1
2016
795
0.100
Why?
Metabolic Clearance Rate
1
2013
118
0.100
Why?
Myasthenia Gravis
1
1994
85
0.100
Why?
Nitrous Oxide
1
1994
108
0.100
Why?
Radiobiology
1
2013
15
0.100
Why?
Mitochondrial Proteins
1
2014
131
0.090
Why?
Liposomes
2
2010
104
0.090
Why?
Tumor Burden
1
2014
333
0.090
Why?
Reactive Oxygen Species
3
2012
525
0.090
Why?
Hydroxylamine
1
2012
7
0.090
Why?
Nuclear Magnetic Resonance, Biomolecular
1
2012
65
0.090
Why?
Brain Chemistry
1
2012
110
0.090
Why?
Endocytosis
2
2010
187
0.090
Why?
Myocardium
4
2002
578
0.090
Why?
Pyrrolidines
3
2004
61
0.080
Why?
Cell Differentiation
1
2017
1646
0.080
Why?
Proteins
1
2016
804
0.080
Why?
Survival Rate
3
2013
2041
0.080
Why?
Cisplatin
2
1994
578
0.080
Why?
Hydroxides
1
1990
8
0.080
Why?
Cell Physiological Phenomena
1
1990
25
0.080
Why?
Molecular Probes
1
2010
38
0.080
Why?
Breast Neoplasms
7
2010
3272
0.080
Why?
Prognosis
4
2013
4116
0.070
Why?
Temperature
3
2016
442
0.070
Why?
DNA Damage
1
1991
399
0.070
Why?
Biomarkers, Tumor
2
1995
1764
0.070
Why?
Diagnosis, Differential
1
2013
1568
0.070
Why?
Perfusion Imaging
1
2009
52
0.070
Why?
Subtraction Technique
1
2009
126
0.070
Why?
Immunoglobulin Fab Fragments
1
2010
92
0.070
Why?
Drug Delivery Systems
1
2010
200
0.070
Why?
Mice, Knockout
1
2014
2207
0.070
Why?
Equipment Design
3
2015
427
0.070
Why?
Signal Transduction
1
2019
3621
0.070
Why?
Head and Neck Neoplasms
2
2013
1088
0.060
Why?
Statistical Distributions
1
2006
9
0.060
Why?
Membrane Proteins
1
2014
1285
0.060
Why?
Software
2
2011
695
0.060
Why?
Spectrophotometry
1
2006
102
0.060
Why?
Administration, Intravesical
1
2006
40
0.060
Why?
Sample Size
1
2006
130
0.060
Why?
Molecular Conformation
2
2005
112
0.060
Why?
Remission Induction
1
2008
754
0.060
Why?
Models, Chemical
1
2007
185
0.060
Why?
Radionuclide Imaging
1
2006
183
0.060
Why?
Xanthine
3
2003
6
0.060
Why?
Needles
1
2026
43
0.060
Why?
Xanthine Oxidase
3
2003
25
0.060
Why?
Lymphocytes
1
2007
461
0.060
Why?
Radon
1
2005
8
0.060
Why?
Elastin
1
2004
8
0.050
Why?
Thermometers
1
2004
6
0.050
Why?
Thermography
1
2004
13
0.050
Why?
Xenograft Model Antitumor Assays
1
2006
556
0.050
Why?
Microwaves
2
2017
45
0.050
Why?
Indicators and Reagents
2
2002
68
0.050
Why?
Esters
1
2003
31
0.050
Why?
Antibodies, Monoclonal
1
2010
1416
0.050
Why?
Feasibility Studies
1
2026
803
0.050
Why?
Injections, Intraperitoneal
1
2003
102
0.050
Why?
Biological Availability
1
2003
86
0.050
Why?
Rhabdomyosarcoma
1
2003
44
0.050
Why?
Nitric Oxide Donors
1
2002
13
0.050
Why?
Nitroprusside
1
2002
25
0.050
Why?
Chemistry, Organic
1
2002
2
0.050
Why?
Pyrroles
1
2003
165
0.050
Why?
Dioxoles
1
2002
8
0.050
Why?
Mice, Inbred BALB C
1
2025
1110
0.050
Why?
Models, Statistical
1
2006
601
0.050
Why?
Vasospasm, Intracranial
1
2002
38
0.050
Why?
Flavanones
1
2002
37
0.040
Why?
Heterocyclic Compounds, 3-Ring
1
2002
55
0.040
Why?
Models, Animal
1
2003
282
0.040
Why?
Flavonoids
1
2002
86
0.040
Why?
Biomedical Research
2
2003
471
0.040
Why?
Administration, Oral
1
2003
674
0.040
Why?
Acoustics
1
2021
48
0.040
Why?
Mesencephalon
1
2001
68
0.040
Why?
Microbubbles
1
2021
44
0.040
Why?
X-Ray Film
1
2020
37
0.040
Why?
Peptides
1
2004
669
0.040
Why?
Radiopharmaceuticals
1
2022
217
0.040
Why?
Polyesters
1
2020
44
0.040
Why?
Proof of Concept Study
1
2020
63
0.040
Why?
Equipment Failure Analysis
2
2015
88
0.040
Why?
Organ Sparing Treatments
1
2020
52
0.040
Why?
Antioxidants
1
2002
236
0.040
Why?
Copper
1
2020
81
0.040
Why?
Lung Neoplasms
5
1995
2457
0.040
Why?
Positron Emission Tomography Computed Tomography
1
2021
107
0.040
Why?
Optical Imaging
1
2020
55
0.040
Why?
Viscosity
1
1999
52
0.040
Why?
Dopamine
1
2001
280
0.040
Why?
Radiation Injuries
3
1997
160
0.040
Why?
Cell Line
2
1996
2482
0.040
Why?
Iron Chelating Agents
1
1999
4
0.040
Why?
Phenotype
1
2006
2638
0.040
Why?
Neoplasm Transplantation
2
2003
399
0.040
Why?
Multimodal Imaging
1
2020
117
0.040
Why?
Porosity
1
2019
66
0.040
Why?
Fluorescence
1
2019
100
0.040
Why?
Small Ubiquitin-Related Modifier Proteins
1
2019
13
0.040
Why?
Silicon Dioxide
1
2019
40
0.040
Why?
Heart
1
2002
527
0.040
Why?
Ubiquitins
1
2019
36
0.040
Why?
Parkinson Disease
1
2001
187
0.040
Why?
Combined Modality Therapy
6
2009
1751
0.040
Why?
Knee Joint
1
2019
177
0.030
Why?
Analysis of Variance
2
2001
889
0.030
Why?
Diffusion Magnetic Resonance Imaging
1
2020
304
0.030
Why?
Multivariate Analysis
3
2013
1009
0.030
Why?
Aged, 80 and over
8
1997
7387
0.030
Why?
Rectal Diseases
1
1997
25
0.030
Why?
Hydrocarbons, Brominated
1
1996
4
0.030
Why?
Biophysics
1
1996
154
0.030
Why?
Disease-Free Survival
2
2013
1193
0.030
Why?
Hemibody Irradiation
1
1995
1
0.030
Why?
Rectum
1
1997
150
0.030
Why?
Hemoglobin A
1
1995
8
0.030
Why?
Binding Sites
2
2016
1159
0.030
Why?
Male
10
2019
47109
0.030
Why?
Platelet Count
1
1995
94
0.030
Why?
Neoplasm Proteins
1
2019
551
0.030
Why?
Leukocyte Count
1
1995
215
0.030
Why?
Chromatin
1
2019
454
0.030
Why?
Transducers
1
2015
37
0.030
Why?
Middle Aged
12
2013
29442
0.030
Why?
Cell Division
1
1996
689
0.030
Why?
Radiation, Ionizing
1
1995
123
0.030
Why?
Radiation Dosage
1
2015
231
0.030
Why?
Vital Capacity
1
1994
74
0.030
Why?
Dermatitis
1
2013
34
0.020
Why?
Quality Control
1
2013
130
0.020
Why?
Bone Marrow Transplantation
1
1994
286
0.020
Why?
Radiotherapy, High-Energy
1
1993
43
0.020
Why?
Erythropoietin
1
1993
90
0.020
Why?
Retrospective Studies
3
2025
10962
0.020
Why?
Symporters
1
2013
116
0.020
Why?
Alcohol Dehydrogenase
1
1993
41
0.020
Why?
Aldehyde Dehydrogenase
1
1993
17
0.020
Why?
Neoplasm Staging
3
1997
2080
0.020
Why?
Aged
10
2001
21760
0.020
Why?
Time Factors
4
1995
5576
0.020
Why?
Carcinoma, Non-Small-Cell Lung
2
1991
1173
0.020
Why?
Anemia
1
1993
135
0.020
Why?
Respiration
1
1994
275
0.020
Why?
Logistic Models
1
1995
1275
0.020
Why?
Spin Trapping
2
2003
4
0.020
Why?
Incidence
2
1994
1777
0.020
Why?
Triacetoneamine-N-Oxyl
1
1991
3
0.020
Why?
Memory
1
1994
237
0.020
Why?
Movement
1
2013
315
0.020
Why?
Technology, Radiologic
1
1992
105
0.020
Why?
Background Radiation
1
2011
1
0.020
Why?
Cells, Cultured
2
2009
2855
0.020
Why?
Clinical Protocols
1
1991
162
0.020
Why?
Heart Rate
1
1994
536
0.020
Why?
Drug Resistance
1
1991
233
0.020
Why?
Cricetinae
1
1991
533
0.020
Why?
Supratentorial Neoplasms
1
1990
9
0.020
Why?
Patient Satisfaction
1
1994
511
0.020
Why?
Astrocytoma
1
1990
85
0.020
Why?
Peroxidases
1
1990
33
0.020
Why?
Vulva
1
1990
25
0.020
Why?
Vulvar Neoplasms
1
1990
19
0.020
Why?
Cells
1
1990
30
0.020
Why?
Vitamin K
1
1990
27
0.020
Why?
Blood Pressure
1
1994
910
0.020
Why?
Cross-Sectional Studies
1
1995
2037
0.020
Why?
Trastuzumab
1
2010
98
0.020
Why?
Prostate
1
1992
434
0.020
Why?
Microscopy, Fluorescence
1
2010
435
0.020
Why?
Treatment Failure
2
2002
300
0.020
Why?
Transfection
1
2010
883
0.020
Why?
Treatment Outcome
2
2013
9713
0.020
Why?
Liver
1
1993
1231
0.020
Why?
Jurkat Cells
1
2007
85
0.020
Why?
Adult
8
1997
29564
0.020
Why?
Up-Regulation
1
2010
743
0.020
Why?
Hemoglobins
2
2002
198
0.020
Why?
Lymph Nodes
1
1990
560
0.010
Why?
Nose Neoplasms
1
1984
38
0.010
Why?
Materials Testing
1
2004
96
0.010
Why?
Nasopharyngeal Neoplasms
1
1984
48
0.010
Why?
Cytochromes c
1
2003
28
0.010
Why?
Hot Temperature
1
2004
228
0.010
Why?
Antineoplastic Combined Chemotherapy Protocols
1
1994
2658
0.010
Why?
Binding, Competitive
1
2003
136
0.010
Why?
Technology Assessment, Biomedical
1
2003
24
0.010
Why?
Antibodies, Monoclonal, Humanized
1
2010
1099
0.010
Why?
Biocompatible Materials
1
2004
204
0.010
Why?
Follow-Up Studies
3
2001
4026
0.010
Why?
Cisterna Magna
1
2002
7
0.010
Why?
Phosgene
1
2002
1
0.010
Why?
Research Support as Topic
1
2003
97
0.010
Why?
Macaca fascicularis
1
2002
111
0.010
Why?
Hydrogen-Ion Concentration
1
2003
488
0.010
Why?
Cyclic GMP
1
2002
63
0.010
Why?
National Institutes of Health (U.S.)
1
2003
140
0.010
Why?
United States Food and Drug Administration
1
2003
164
0.010
Why?
Cerebral Arteries
1
2002
75
0.010
Why?
Asteraceae
1
2002
4
0.010
Why?
Radiography, Interventional
1
2003
157
0.010
Why?
Injections
1
2002
130
0.010
Why?
Myocardial Reperfusion
1
2002
25
0.010
Why?
Phenols
1
2002
51
0.010
Why?
Microscopy, Video
1
2002
36
0.010
Why?
Catalysis
1
2002
216
0.010
Why?
Chick Embryo
1
2002
176
0.010
Why?
Oxidants
1
2002
86
0.010
Why?
Mitochondria, Heart
1
2002
51
0.010
Why?
Chelating Agents
1
2002
68
0.010
Why?
Regression Analysis
2
1995
580
0.010
Why?
Cerebral Angiography
1
2002
263
0.010
Why?
Actuarial Analysis
1
2001
60
0.010
Why?
Myocardial Ischemia
1
2002
142
0.010
Why?
Neuroblastoma
1
1984
409
0.010
Why?
Perfusion
1
2002
271
0.010
Why?
Plant Extracts
1
2002
252
0.010
Why?
Sarcosine
1
1999
2
0.010
Why?
Thiocarbamates
1
1999
7
0.010
Why?
Drug Stability
1
1999
48
0.010
Why?
Rats, Sprague-Dawley
1
2001
1255
0.010
Why?
Fibroblasts
1
2001
767
0.010
Why?
Risk Factors
2
2001
6232
0.010
Why?
Mitochondria
1
2001
650
0.010
Why?
Dose-Response Relationship, Radiation
1
1997
193
0.010
Why?
Chicago
1
2001
1513
0.010
Why?
United States
2
2003
8193
0.010
Why?
Vincristine
1
1994
102
0.010
Why?
Mitoxantrone
1
1994
65
0.010
Why?
Genital Neoplasms, Female
1
1995
118
0.010
Why?
Methotrexate
1
1994
227
0.010
Why?
Cyclophosphamide
1
1994
284
0.010
Why?
Doxorubicin
1
1994
285
0.010
Why?
Injections, Subcutaneous
1
1993
141
0.010
Why?
Alcohols
1
1993
14
0.010
Why?
Horses
1
1993
35
0.010
Why?
Fluorouracil
1
1994
541
0.010
Why?
Radioimmunoassay
1
1992
139
0.010
Why?
Substrate Specificity
1
1993
374
0.010
Why?
Brain
1
2002
2448
0.010
Why?
Recombinant Proteins
1
1993
993
0.010
Why?
In Vitro Techniques
1
1993
945
0.010
Why?
Xanthines
1
1991
3
0.010
Why?
Acute Disease
1
1993
860
0.010
Why?
Radiation
1
1990
16
0.010
Why?
Neutrons
1
1990
57
0.010
Why?
Dose-Response Relationship, Drug
1
1994
1950
0.000
Why?
Neoplasm Metastasis
1
1994
1089
0.000
Why?
Esthetics
1
1989
52
0.000
Why?
Neutrophils
1
1991
346
0.000
Why?
Hysterectomy
1
1990
174
0.000
Why?
Mastectomy, Segmental
1
1989
115
0.000
Why?
Carcinoma, Intraductal, Noninfiltrating
1
1989
133
0.000
Why?
Mathematics
1
1988
178
0.000
Why?
Rats, Inbred Strains
1
1988
300
0.000
Why?
Lymph Node Excision
1
1989
238
0.000
Why?
Preoperative Care
1
1990
418
0.000
Why?
Survival Analysis
1
1990
1527
0.000
Why?
Recurrence
1
1990
1254
0.000
Why?
Clinical Trials as Topic
1
1990
1131
0.000
Why?
Keratins
1
1984
62
0.000
Why?
Prospective Studies
1
1993
4825
0.000
Why?
Carcinoma, Small Cell
1
1984
116
0.000
Why?
Cytoplasm
1
1984
276
0.000
Why?
Neoplasm Recurrence, Local
1
1989
1535
0.000
Why?
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