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Howard Halpern

Concepts (406)

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
90
2025
329
16.180
Why?
Oxygen
47
2025
788
10.130
Why?
Molecular Imaging
12
2024
72
3.990
Why?
Image Processing, Computer-Assisted
26
2025
1323
3.990
Why?
Fibrosarcoma
15
2025
90
3.610
Why?
Algorithms
22
2025
2014
3.270
Why?
Oximetry
13
2020
91
3.260
Why?
Phantoms, Imaging
24
2025
491
3.120
Why?
Imaging, Three-Dimensional
16
2025
630
2.920
Why?
Tumor Hypoxia
8
2025
43
1.960
Why?
Diagnostic Imaging
12
2021
475
1.940
Why?
Neoplasms, Experimental
10
2016
271
1.820
Why?
Spin Labels
24
2023
107
1.720
Why?
Hypoxia
10
2022
682
1.570
Why?
Radiotherapy, Intensity-Modulated
6
2025
188
1.540
Why?
Mice, Inbred C3H
20
2017
372
1.450
Why?
Neoplasms
17
2024
3250
1.390
Why?
Electrons
3
2017
51
1.190
Why?
Animals
67
2025
28945
1.160
Why?
Mice
44
2025
12562
1.150
Why?
Radiotherapy, Image-Guided
3
2018
62
1.150
Why?
Oxidation-Reduction
7
2023
411
1.090
Why?
Magnetic Resonance Imaging
18
2021
3651
1.060
Why?
Signal Processing, Computer-Assisted
5
2014
205
0.940
Why?
Tomography, X-Ray Computed
6
2024
2781
0.890
Why?
Cell Hypoxia
8
2022
188
0.840
Why?
Mammary Neoplasms, Experimental
2
2014
133
0.750
Why?
Radiotherapy Planning, Computer-Assisted
9
2025
204
0.720
Why?
Sulfhydryl Compounds
3
2023
72
0.700
Why?
Reproducibility of Results
12
2018
2883
0.680
Why?
Radiotherapy, Conformal
5
2025
89
0.660
Why?
Image Enhancement
5
2017
565
0.660
Why?
Radiation Tolerance
2
2013
176
0.650
Why?
Tissue Engineering
2
2017
202
0.570
Why?
Free Radicals
8
2019
71
0.550
Why?
Cyclic N-Oxides
8
2013
33
0.550
Why?
Radiotherapy Dosage
9
2025
482
0.530
Why?
Transplants
1
2017
43
0.520
Why?
Muscle Neoplasms
1
2017
17
0.510
Why?
Magnetic Fields
1
2016
12
0.510
Why?
Sensitivity and Specificity
9
2015
2040
0.510
Why?
Signal-To-Noise Ratio
5
2018
115
0.500
Why?
Magnetic Resonance Spectroscopy
2
2017
325
0.490
Why?
Oxidative Stress
3
2023
484
0.490
Why?
Brain Neoplasms
2
2025
855
0.480
Why?
Bone Marrow
1
2017
458
0.470
Why?
Cell Line, Tumor
11
2025
2794
0.470
Why?
Osteogenesis
1
2017
277
0.470
Why?
Antigens, Neoplasm
2
2017
359
0.460
Why?
Computer Graphics
2
2015
102
0.460
Why?
Nitrogen Oxides
8
2016
15
0.460
Why?
Image Interpretation, Computer-Assisted
3
2013
703
0.440
Why?
Computer Simulation
6
2025
1158
0.430
Why?
Partial Pressure
5
2017
51
0.430
Why?
Artifacts
3
2018
252
0.420
Why?
Diffusion Tensor Imaging
1
2014
76
0.410
Why?
Vascular Endothelial Growth Factor A
2
2013
407
0.400
Why?
Oxygen Consumption
4
2020
257
0.380
Why?
Hindlimb
4
2014
97
0.360
Why?
Humans
51
2025
96127
0.340
Why?
Hydroxyl Radical
4
2000
36
0.330
Why?
Fourier Analysis
3
2024
128
0.330
Why?
Glutathione
2
2023
107
0.320
Why?
Adenocarcinoma
5
2013
1215
0.290
Why?
Printing, Three-Dimensional
2
2020
50
0.290
Why?
Radiation-Protective Agents
2
2012
99
0.280
Why?
Carcinoma
2
2010
449
0.270
Why?
Electromagnetic Fields
4
2014
28
0.260
Why?
X-Ray Microtomography
2
2017
102
0.250
Why?
Urinary Catheterization
1
2006
40
0.240
Why?
Mice, Nude
5
2025
842
0.240
Why?
Superoxides
5
2004
76
0.230
Why?
Misonidazole
2
2022
18
0.220
Why?
Half-Life
6
2017
99
0.220
Why?
Urinary Bladder
1
2006
263
0.210
Why?
Glioblastoma
2
2025
286
0.200
Why?
Data Interpretation, Statistical
3
2013
312
0.200
Why?
Amifostine
1
2003
51
0.190
Why?
Pyridines
3
2000
319
0.190
Why?
Principal Component Analysis
2
2014
168
0.190
Why?
Carcinoma, Squamous Cell
3
2022
1105
0.190
Why?
Mammals
1
2024
261
0.180
Why?
Calibration
2
2017
108
0.180
Why?
Tumor Cells, Cultured
3
2013
1054
0.170
Why?
Uterine Cervical Neoplasms
3
2020
319
0.170
Why?
Female
21
2020
50063
0.170
Why?
High-Intensity Focused Ultrasound Ablation
1
2021
48
0.170
Why?
Kinetics
6
2016
1562
0.170
Why?
Rabbits
2
2013
639
0.160
Why?
Models, Biological
2
2017
1815
0.160
Why?
Body Water
1
1999
35
0.160
Why?
Rats
7
2013
4154
0.150
Why?
Nitric Oxide
4
2009
281
0.150
Why?
Tritium
2
2016
134
0.150
Why?
Contrast Media
3
2020
1096
0.150
Why?
X-Rays
2
2006
139
0.150
Why?
Prostatic Neoplasms
7
2009
1798
0.140
Why?
Homologous Recombination
1
2019
57
0.140
Why?
Indoles
1
2000
317
0.140
Why?
Radio Waves
2
2017
20
0.140
Why?
Molecular Structure
5
2005
310
0.140
Why?
Carbon Dioxide
2
1996
212
0.140
Why?
Chitosan
1
2017
17
0.140
Why?
Gamma Rays
1
2017
73
0.140
Why?
Reperfusion Injury
1
2019
148
0.130
Why?
Free Radical Scavengers
2
2012
60
0.130
Why?
Buthionine Sulfoximine
1
2016
7
0.130
Why?
Indenes
1
2017
9
0.130
Why?
Nanoparticles
1
2019
197
0.130
Why?
Indolequinones
1
2016
1
0.130
Why?
Deuterium
1
2017
35
0.130
Why?
Quantum Theory
1
2017
40
0.130
Why?
Tissue Distribution
2
2013
297
0.130
Why?
Disulfides
1
2016
65
0.130
Why?
Kaplan-Meier Estimate
1
2018
886
0.120
Why?
Image-Guided Biopsy
1
2017
81
0.120
Why?
Gonadotropins, Pituitary
1
1995
11
0.120
Why?
Fluorocarbons
1
1996
72
0.120
Why?
Collagen
1
2017
307
0.120
Why?
Radiation-Sensitizing Agents
1
1996
100
0.120
Why?
Absorption, Radiation
1
2015
4
0.120
Why?
Genetic Therapy
2
2009
382
0.120
Why?
Radiotherapy, Computer-Assisted
1
2015
25
0.120
Why?
Skin Physiological Phenomena
1
2015
27
0.110
Why?
Cone-Beam Computed Tomography
1
2016
73
0.110
Why?
Solutions
3
2005
86
0.110
Why?
Sarcoma, Experimental
1
1994
53
0.110
Why?
Biophysical Phenomena
2
2010
125
0.110
Why?
Bone Neoplasms
1
2017
320
0.110
Why?
Androgens
1
1995
179
0.110
Why?
Positron-Emission Tomography
3
2022
354
0.110
Why?
Radiotherapy
4
2013
328
0.110
Why?
Halothane
1
1994
13
0.110
Why?
Electronics
1
2014
20
0.110
Why?
Prostate-Specific Antigen
2
1995
346
0.110
Why?
Anesthesia, Inhalation
1
1994
37
0.100
Why?
Antigens, Polyomavirus Transforming
1
2014
48
0.100
Why?
Anisotropy
1
2014
65
0.100
Why?
Mammary Tumor Virus, Mouse
1
2014
64
0.100
Why?
Metabolic Clearance Rate
1
2013
119
0.100
Why?
Myasthenia Gravis
1
1994
83
0.100
Why?
ROC Curve
1
2016
797
0.100
Why?
Nitrous Oxide
1
1994
107
0.100
Why?
Radiobiology
1
2013
13
0.100
Why?
Mitochondrial Proteins
1
2014
129
0.100
Why?
Liposomes
2
2010
101
0.100
Why?
Tumor Burden
1
2014
323
0.090
Why?
Reactive Oxygen Species
3
2012
517
0.090
Why?
Hydroxylamine
1
2012
7
0.090
Why?
Nuclear Magnetic Resonance, Biomolecular
1
2012
66
0.090
Why?
Myocardium
4
2002
596
0.090
Why?
Brain Chemistry
1
2012
120
0.090
Why?
Endocytosis
2
2010
186
0.090
Why?
Pyrrolidines
3
2004
62
0.090
Why?
Cell Differentiation
1
2017
1666
0.080
Why?
Proteins
1
2016
816
0.080
Why?
Survival Rate
3
2013
1986
0.080
Why?
Cisplatin
2
1994
611
0.080
Why?
Hydroxides
1
1990
9
0.080
Why?
Breast Neoplasms
7
2010
3147
0.080
Why?
Molecular Probes
1
2010
37
0.080
Why?
Cell Physiological Phenomena
1
1990
27
0.080
Why?
Temperature
3
2016
426
0.080
Why?
Prognosis
4
2013
4033
0.080
Why?
Biomarkers, Tumor
2
1995
1665
0.080
Why?
DNA Damage
1
1991
392
0.080
Why?
Immunoglobulin Fab Fragments
1
2010
87
0.070
Why?
Perfusion Imaging
1
2009
52
0.070
Why?
Diagnosis, Differential
1
2013
1619
0.070
Why?
Subtraction Technique
1
2009
130
0.070
Why?
Mice, Knockout
1
2014
2163
0.070
Why?
Drug Delivery Systems
1
2010
198
0.070
Why?
Equipment Design
3
2015
427
0.070
Why?
Signal Transduction
1
2019
3586
0.070
Why?
Receptor, ErbB-2
1
2010
280
0.070
Why?
Head and Neck Neoplasms
2
2013
1089
0.070
Why?
Statistical Distributions
1
2006
9
0.060
Why?
Membrane Proteins
1
2014
1276
0.060
Why?
Software
2
2011
698
0.060
Why?
Administration, Intravesical
1
2006
34
0.060
Why?
Spectrophotometry
1
2006
108
0.060
Why?
Sample Size
1
2006
128
0.060
Why?
Molecular Conformation
2
2005
111
0.060
Why?
Remission Induction
1
2008
769
0.060
Why?
Models, Chemical
1
2007
187
0.060
Why?
Xanthine
3
2003
6
0.060
Why?
Radionuclide Imaging
1
2006
217
0.060
Why?
Xanthine Oxidase
3
2003
25
0.060
Why?
Radon
1
2005
4
0.060
Why?
Lymphocytes
1
2007
489
0.060
Why?
Elastin
1
2004
8
0.060
Why?
Thermometers
1
2004
6
0.060
Why?
Thermography
1
2004
12
0.060
Why?
Xenograft Model Antitumor Assays
1
2006
535
0.050
Why?
Microwaves
2
2017
32
0.050
Why?
Indicators and Reagents
2
2002
71
0.050
Why?
Esters
1
2003
31
0.050
Why?
Antibodies, Monoclonal
1
2010
1431
0.050
Why?
Injections, Intraperitoneal
1
2003
103
0.050
Why?
Biological Availability
1
2003
89
0.050
Why?
Rhabdomyosarcoma
1
2003
44
0.050
Why?
Nitric Oxide Donors
1
2002
13
0.050
Why?
Nitroprusside
1
2002
32
0.050
Why?
Models, Statistical
1
2006
594
0.050
Why?
Chemistry, Organic
1
2002
2
0.050
Why?
Dioxoles
1
2002
8
0.050
Why?
Pyrroles
1
2003
172
0.050
Why?
Mice, Inbred BALB C
1
2025
1125
0.050
Why?
Vasospasm, Intracranial
1
2002
36
0.050
Why?
Heterocyclic Compounds, 3-Ring
1
2002
44
0.050
Why?
Flavanones
1
2002
35
0.050
Why?
Biomedical Research
2
2003
441
0.050
Why?
Models, Animal
1
2003
288
0.050
Why?
Flavonoids
1
2002
85
0.040
Why?
Acoustics
1
2021
51
0.040
Why?
Administration, Oral
1
2003
688
0.040
Why?
Microbubbles
1
2021
41
0.040
Why?
Mesencephalon
1
2001
68
0.040
Why?
Radiopharmaceuticals
1
2022
204
0.040
Why?
X-Ray Film
1
2020
37
0.040
Why?
Peptides
1
2004
672
0.040
Why?
Polyesters
1
2020
44
0.040
Why?
Proof of Concept Study
1
2020
57
0.040
Why?
Equipment Failure Analysis
2
2015
91
0.040
Why?
Organ Sparing Treatments
1
2020
47
0.040
Why?
Antioxidants
1
2002
233
0.040
Why?
Lung Neoplasms
5
1995
2463
0.040
Why?
Copper
1
2020
81
0.040
Why?
Positron Emission Tomography Computed Tomography
1
2021
104
0.040
Why?
Optical Imaging
1
2020
51
0.040
Why?
Viscosity
1
1999
51
0.040
Why?
Dopamine
1
2001
282
0.040
Why?
Phenotype
1
2006
2579
0.040
Why?
Radiation Injuries
3
1997
163
0.040
Why?
Iron Chelating Agents
1
1999
4
0.040
Why?
Cell Line
2
1996
2533
0.040
Why?
Neoplasm Transplantation
2
2003
413
0.040
Why?
Multimodal Imaging
1
2020
115
0.040
Why?
Porosity
1
2019
65
0.040
Why?
Small Ubiquitin-Related Modifier Proteins
1
2019
13
0.040
Why?
Parkinson Disease
1
2001
178
0.040
Why?
Silicon Dioxide
1
2019
39
0.040
Why?
Fluorescence
1
2019
106
0.040
Why?
Ubiquitins
1
2019
38
0.040
Why?
Heart
1
2002
592
0.040
Why?
Combined Modality Therapy
6
2009
1773
0.040
Why?
Knee Joint
1
2019
166
0.040
Why?
Analysis of Variance
2
2001
910
0.030
Why?
Diffusion Magnetic Resonance Imaging
1
2020
301
0.030
Why?
Aged, 80 and over
8
1997
7232
0.030
Why?
Multivariate Analysis
3
2013
1010
0.030
Why?
Rectal Diseases
1
1997
23
0.030
Why?
Hydrocarbons, Brominated
1
1996
4
0.030
Why?
Biophysics
1
1996
157
0.030
Why?
Male
10
2019
45870
0.030
Why?
Rectum
1
1997
151
0.030
Why?
Binding Sites
2
2016
1167
0.030
Why?
Hemibody Irradiation
1
1995
1
0.030
Why?
Disease-Free Survival
2
2013
1195
0.030
Why?
Hemoglobin A
1
1995
8
0.030
Why?
Platelet Count
1
1995
97
0.030
Why?
Chromatin
1
2019
446
0.030
Why?
Middle Aged
12
2013
28363
0.030
Why?
Neoplasm Proteins
1
2019
554
0.030
Why?
Leukocyte Count
1
1995
228
0.030
Why?
Transducers
1
2015
45
0.030
Why?
Cell Division
1
1996
705
0.030
Why?
Radiation, Ionizing
1
1995
124
0.030
Why?
Radiation Dosage
1
2015
236
0.030
Why?
Vital Capacity
1
1994
73
0.030
Why?
Retrospective Studies
3
2025
10286
0.030
Why?
Quality Control
1
2013
125
0.030
Why?
Dermatitis
1
2013
35
0.030
Why?
Bone Marrow Transplantation
1
1994
294
0.030
Why?
Aged
10
2001
20964
0.020
Why?
Radiotherapy, High-Energy
1
1993
49
0.020
Why?
Erythropoietin
1
1993
91
0.020
Why?
Symporters
1
2013
112
0.020
Why?
Alcohol Dehydrogenase
1
1993
42
0.020
Why?
Aldehyde Dehydrogenase
1
1993
17
0.020
Why?
Neoplasm Staging
3
1997
2081
0.020
Why?
Time Factors
4
1995
5585
0.020
Why?
Carcinoma, Non-Small-Cell Lung
2
1991
1172
0.020
Why?
Anemia
1
1993
137
0.020
Why?
Respiration
1
1994
281
0.020
Why?
Logistic Models
1
1995
1268
0.020
Why?
Spin Trapping
2
2003
4
0.020
Why?
Incidence
2
1994
1715
0.020
Why?
Memory
1
1994
229
0.020
Why?
Triacetoneamine-N-Oxyl
1
1991
3
0.020
Why?
Technology, Radiologic
1
1992
104
0.020
Why?
Movement
1
2013
325
0.020
Why?
Heart Rate
1
1994
519
0.020
Why?
Background Radiation
1
2011
1
0.020
Why?
Clinical Protocols
1
1991
162
0.020
Why?
Cells, Cultured
2
2009
2943
0.020
Why?
Drug Resistance
1
1991
237
0.020
Why?
Supratentorial Neoplasms
1
1990
10
0.020
Why?
Cricetinae
1
1991
544
0.020
Why?
Patient Satisfaction
1
1994
514
0.020
Why?
Vulva
1
1990
23
0.020
Why?
Peroxidases
1
1990
34
0.020
Why?
Vulvar Neoplasms
1
1990
19
0.020
Why?
Astrocytoma
1
1990
89
0.020
Why?
Cross-Sectional Studies
1
1995
1874
0.020
Why?
Vitamin K
1
1990
25
0.020
Why?
Cells
1
1990
31
0.020
Why?
Blood Pressure
1
1994
929
0.020
Why?
Trastuzumab
1
2010
88
0.020
Why?
Prostate
1
1992
423
0.020
Why?
Treatment Outcome
2
2013
9173
0.020
Why?
Microscopy, Fluorescence
1
2010
444
0.020
Why?
Treatment Failure
2
2002
297
0.020
Why?
Transfection
1
2010
909
0.020
Why?
Liver
1
1993
1238
0.020
Why?
Adult
8
1997
28718
0.020
Why?
Jurkat Cells
1
2007
83
0.020
Why?
Up-Regulation
1
2010
741
0.020
Why?
Hemoglobins
2
2002
196
0.020
Why?
Lymph Nodes
1
1990
565
0.020
Why?
Nose Neoplasms
1
1984
36
0.010
Why?
Materials Testing
1
2004
94
0.010
Why?
Nasopharyngeal Neoplasms
1
1984
47
0.010
Why?
Antineoplastic Combined Chemotherapy Protocols
1
1994
2642
0.010
Why?
Hot Temperature
1
2004
217
0.010
Why?
Cytochromes c
1
2003
28
0.010
Why?
Antibodies, Monoclonal, Humanized
1
2010
1020
0.010
Why?
Technology Assessment, Biomedical
1
2003
27
0.010
Why?
Binding, Competitive
1
2003
147
0.010
Why?
Follow-Up Studies
3
2001
3927
0.010
Why?
Biocompatible Materials
1
2004
201
0.010
Why?
Research Support as Topic
1
2003
92
0.010
Why?
Phosgene
1
2002
1
0.010
Why?
Cisterna Magna
1
2002
11
0.010
Why?
Macaca fascicularis
1
2002
112
0.010
Why?
United States Food and Drug Administration
1
2003
147
0.010
Why?
Hydrogen-Ion Concentration
1
2003
509
0.010
Why?
National Institutes of Health (U.S.)
1
2003
137
0.010
Why?
Cyclic GMP
1
2002
62
0.010
Why?
Cerebral Arteries
1
2002
76
0.010
Why?
Radiography, Interventional
1
2003
154
0.010
Why?
Phenols
1
2002
42
0.010
Why?
Asteraceae
1
2002
4
0.010
Why?
Injections
1
2002
126
0.010
Why?
Myocardial Reperfusion
1
2002
28
0.010
Why?
Microscopy, Video
1
2002
36
0.010
Why?
Catalysis
1
2002
216
0.010
Why?
Mitochondria, Heart
1
2002
52
0.010
Why?
Chick Embryo
1
2002
227
0.010
Why?
Oxidants
1
2002
86
0.010
Why?
Cerebral Angiography
1
2002
217
0.010
Why?
Chelating Agents
1
2002
68
0.010
Why?
Regression Analysis
2
1995
599
0.010
Why?
Actuarial Analysis
1
2001
66
0.010
Why?
Neuroblastoma
1
1984
400
0.010
Why?
Myocardial Ischemia
1
2002
167
0.010
Why?
Perfusion
1
2002
266
0.010
Why?
Plant Extracts
1
2002
248
0.010
Why?
Sarcosine
1
1999
2
0.010
Why?
Thiocarbamates
1
1999
6
0.010
Why?
Drug Stability
1
1999
50
0.010
Why?
Rats, Sprague-Dawley
1
2001
1267
0.010
Why?
Risk Factors
2
2001
5960
0.010
Why?
Fibroblasts
1
2001
781
0.010
Why?
Mitochondria
1
2001
623
0.010
Why?
Dose-Response Relationship, Radiation
1
1997
192
0.010
Why?
Chicago
1
2001
1503
0.010
Why?
United States
2
2003
7767
0.010
Why?
Vincristine
1
1994
113
0.010
Why?
Mitoxantrone
1
1994
68
0.010
Why?
Genital Neoplasms, Female
1
1995
115
0.010
Why?
Methotrexate
1
1994
249
0.010
Why?
Cyclophosphamide
1
1994
313
0.010
Why?
Doxorubicin
1
1994
304
0.010
Why?
Injections, Subcutaneous
1
1993
134
0.010
Why?
Alcohols
1
1993
15
0.010
Why?
Horses
1
1993
36
0.010
Why?
Fluorouracil
1
1994
555
0.010
Why?
Radioimmunoassay
1
1992
150
0.010
Why?
Substrate Specificity
1
1993
368
0.010
Why?
Brain
1
2002
2482
0.010
Why?
Recombinant Proteins
1
1993
1034
0.010
Why?
In Vitro Techniques
1
1993
1010
0.010
Why?
Xanthines
1
1991
3
0.010
Why?
Acute Disease
1
1993
872
0.010
Why?
Radiation
1
1990
16
0.010
Why?
Neutrons
1
1990
57
0.010
Why?
Dose-Response Relationship, Drug
1
1994
1973
0.010
Why?
Neoplasm Metastasis
1
1994
1103
0.010
Why?
Esthetics
1
1989
50
0.000
Why?
Neutrophils
1
1991
334
0.000
Why?
Mastectomy, Segmental
1
1989
108
0.000
Why?
Hysterectomy
1
1990
168
0.000
Why?
Carcinoma, Intraductal, Noninfiltrating
1
1989
126
0.000
Why?
Rats, Inbred Strains
1
1988
311
0.000
Why?
Mathematics
1
1988
191
0.000
Why?
Lymph Node Excision
1
1989
235
0.000
Why?
Preoperative Care
1
1990
418
0.000
Why?
Recurrence
1
1990
1218
0.000
Why?
Survival Analysis
1
1990
1546
0.000
Why?
Clinical Trials as Topic
1
1990
1178
0.000
Why?
Keratins
1
1984
64
0.000
Why?
Prospective Studies
1
1993
4671
0.000
Why?
Carcinoma, Small Cell
1
1984
137
0.000
Why?
Cytoplasm
1
1984
288
0.000
Why?
Neoplasm Recurrence, Local
1
1989
1469
0.000
Why?
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