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Subfield · Health Professions

Radiological and Ultrasound Technology research

Radiological and Ultrasound Technology is a subfield of Health Professions. Science Explorer counts 118k research works in it since 1950. 10.1% of them reached the world's top 10% most cited for their field and year.

In short: specialty that uses medical imaging to diagnose and treat diseases seen within the body.

Research works
118k
fractional, since 1950
In the world top 10%
12k
per year above
Top-10% rate
10.1%
share of its works in the world top 10%
Topics
3
Growth, 2018-21 → 2022-25
+16%
the tick is no change
Largest producer
United States
28% of the 10 largest, 2022-now
Radiological and Ultrasound Technology

This ranks research output and citation impact. It says nothing about the quality of diagnosis, treatment or care.

What is Radiological and Ultrasound Technology research about, and what is growing?

By the world's output in 2021-25, its most used keywords are Occupational Safety, Safety Culture, Family Presence, Patient-Centered Care, Ionizing Radiation, Radon. Gaining share since 2011-15: Family Presence, Patient-Centered Care. Losing share: Ionizing Radiation, Radon.

▲ gaining share of this field◆ holding its share▼ losing share

Size is the world's fractional works in 2021-25 in the topics tagged with each word; colour compares the word's share of this field with 2011-15. Each links to the topic it comes from most.

All 6 words, with their numbers
  1. Occupational Safety17k◆ 1.04×1 topic
  2. Safety Culture17k◆ 1.04×1 topic
  3. Family Presence9,385▲ 1.19×1 topic
  4. Patient-Centered Care9,385▲ 1.19×1 topic
  5. Ionizing Radiation6,392▼ 0.75×1 topic
  6. Radon6,392▼ 0.75×1 topic

Which countries lead Radiological and Ultrasound Technology research?

On research quality in 2022-now, China, the United States and the United Kingdom rank highest in Radiological and Ultrasound Technology. By volume, the United States and China publish the most (4.4k and 3.3k works in 2022-now).

By research quality, 2022-now

  1. 1 China #2 all time 1.60× citation excellence · 1.07× journals · 100% breadth 20.2% top 10% · 2.9k works
  2. 2 United States #1 all time 0.85× citation excellence · 1.56× journals · 100% breadth 9.5% top 10% · 4k works
  3. 3 United Kingdom #3 all time 1.11× citation excellence · 1.43× journals · 100% breadth 12.5% top 10% · 1.1k works
  4. 4 Australia #4 all time 1.56× citation excellence · 1.19× journals · 100% breadth 18.6% top 10% · 723 works
  5. 5 Canada #5 all time 1.23× citation excellence · 1.20× journals · 100% breadth 11.6% top 10% · 706 works
  6. 6 Germany #6 all time 1.30× citation excellence · 1.39× journals · 100% breadth 11.5% top 10% · 484 works
  7. 7 Netherlands #9 all time 1.60× citation excellence · 1.45× journals · 100% breadth 17.8% top 10% · 203 works
  8. 8 France #7 all time 1.06× citation excellence · 1.26× journals · 100% breadth 7.6% top 10% · 491 works
  9. 9 Spain #8 all time 1.20× citation excellence · 1.00× journals · 100% breadth 9.5% top 10% · 503 works
  10. 10 Sweden #10 all time 1.27× citation excellence · 1.38× journals · 100% breadth 10.6% top 10% · 240 works

The track on each row is that row's top-10% rate. The ranking itself is the quality score, which compares the rate with what each place's own topics predict, adds its share of papers in the Nature Index journals, and counts output and breadth too.

Of 29 countries ranked in Radiological and Ultrasound Technology. Ranked on the quality score for 2022-now; the bracket is the all-time rank.

All countries ranked in Radiological and Ultrasound Technology

By volume, 2022-now

  1. 1 United States 4.4k works
  2. 2 China 3.3k works
  3. 3 India 1.5k works
  4. 4 Türkiye 1.2k works
  5. 5 United Kingdom 1.2k works
  6. 6 Brazil 1.1k works
  7. 7 Indonesia 1.1k works
  8. 8 Australia 808 works
  9. 9 Canada 774 works
  10. 10 Iran 679 works

How concentrated that is

The same countries as shares of everything the list above accounts for. A node where two countries do two thirds of the work and one spread evenly across twelve read alike as a ranking and not at all alike here.

United States: 27.5%China: 20.3%India: 9.5%Türkiye: 7.7%6 others listed: 35.1%28%largest
United States4,445 · 27.5%China3,274 · 20.3%India1,535 · 9.5%Türkiye1,238 · 7.7%6 others listed5,669 · 35.1%

Shares of the rows listed above, not of the whole node.

Which institutions lead Radiological and Ultrasound Technology research?

Harvard University (United States) ranks first in Radiological and Ultrasound Technology on research quality in 2022-now, followed by Chinese Academy of Sciences and University of Toronto.

By research quality, 2022-now

  1. 1 Harvard University United States · Cambridge · #1 all time 13.4% top 10% · 83 works
  2. 2 Chinese Academy of Sciences China · Beijing · #6 all time 23.8% top 10% · 74 works
  3. 3 University of Toronto Canada · Toronto · #3 all time 14.3% top 10% · 81 works
  4. 4 Centre National de la Recherche Scientifique France · Paris · #13 all time 8.2% top 10% · 75 works
  5. 5 Department of Atomic Energy India · Mumbai · #88 all time 6.0% top 10% · 62 works
  6. 6 Russian Academy of Sciences Russia · Moscow · #92 all time 2.0% top 10% · 114 works
  7. 7 University of Indonesia Indonesia · Depok · #95 all time 1.4% top 10% · 68 works
  8. 8 Islamic Azad University, Tehran Iran · Tehran · #97 all time 6.7% top 10% · 65 works

The track on each row is that row's top-10% rate. The ranking itself is the quality score, which compares the rate with what each place's own topics predict, adds its share of papers in the Nature Index journals, and counts output and breadth too.

Of 8 institutions above the floor of 40 fractional works in Radiological and Ultrasound Technology.

Top 100 Radiological and Ultrasound Technology institutions

By volume, 2022-now

  1. 1 Russian Academy of SciencesRussia 120 works
  2. 2 Harvard UniversityUnited States 94 works
  3. 3 University of TorontoCanada 89 works
  4. 4 Centre National de la Recherche ScientifiqueFrance 82 works
  5. 5 Chinese Academy of SciencesChina 81 works
  6. 6 University of IndonesiaIndonesia 75 works
  7. 7 Islamic Azad University, TehranIran 68 works
  8. 8 Department of Atomic EnergyIndia 67 works
  9. 9 China University of Mining and TechnologyChina 62 works
  10. 10 Johns Hopkins UniversityUnited States 62 works

Who are the leading researchers in Radiological and Ultrasound Technology?

Counting only their work in Radiological and Ultrasound Technology, Heng Li, J. Randall Curtis and Faisal Irshad Khan have the most papers in the world top 10% for their subfield and year beyond the 10% expected.

  1. 1 Heng Li China · #130,846 worldwide overall 32.5 of 60 papers here in the top 10%
  2. 2 J. Randall Curtis United States · #25,953 worldwide overall 30.4 of 76 papers here in the top 10%
  3. 3 Faisal Irshad Khan Canada · #79,343 worldwide overall 38.2 of 67 papers here in the top 10%
  4. 4 Peter E.D. Love Australia · #25,258 worldwide overall 25.7 of 54 papers here in the top 10%
  5. 5 Valerio Cozzani Italy · #86,696 worldwide overall 22.6 of 42 papers here in the top 10%
  6. 6 Genserik Reniers Netherlands · #68,626 worldwide overall 20.9 of 66 papers here in the top 10%
  7. 7 Élie Azoulay France · #9,351 worldwide overall 18.0 of 40 papers here in the top 10%
  8. 8 Matthew Ryan Hallowell United States · #42,715 worldwide overall 18.1 of 42 papers here in the top 10%
  9. 9 Nima Khakzad Netherlands · #14,271 worldwide overall 15.7 of 27 papers here in the top 10%
  10. 10 Maureen Frances Dollard Australia · #21,885 worldwide overall 16.0 of 32 papers here in the top 10%

Ranked on their work in Radiological and Ultrasound Technology alone: how many more of their papers here reached the world top 10% for their subfield and year than the 10% expected, among 407,272 ranked researchers with a paper here. Each paper counts once, so many strong papers outrank one famous one, and a long record of ordinary papers does not climb. Identities come from OpenAlex author disambiguation, which occasionally merges or splits people.

Top 100 Radiological and Ultrasound Technology researchers

What are the most cited papers in Radiological and Ultrasound Technology?

The most cited paper in Radiological and Ultrasound Technology is "The Construct of Resilience: A Critical Evaluation and Guidelines for Future Work" (Suniya S. Luthar, Dante Cicchetti, Bronwyn E. Becker, 2000), with 9,365 citations. Next come "Toward a Theory of Situation Awareness in Dynamic Systems" (8,747) and "Discussion Reporting of 14 C Data" (5,732).

Most cited papers
#PaperReleasedCitations
1 The Construct of Resilience: A Critical Evaluation and Guidelines for Future Work Suniya S. Luthar, Dante Cicchetti, Bronwyn E. Becker · Child Development Open access May 2000 9,365
2 Toward a Theory of Situation Awareness in Dynamic Systems Mica Robertson Endsley · Human Factors The Journal of the Human Factors and Ergonomics Society Mar 1995 8,747
3 Discussion Reporting of 14 C Data Minze Stuiver, Henry A. Polach · Radiocarbon Open access 1977 5,732
4 Human error: models and management JAMES T. REASON · BMJ Open access 18 Mar 2000 5,556
5 View Through a Window May Influence Recovery from Surgery Roger S. Ulrich · Science 27 Apr 1984 5,305
All 100 most cited papers, with filters and sorting

Where is Radiological and Ultrasound Technology research done?

The largest centres of Radiological and Ultrasound Technology research in 2022-now are Beijing (China), London (United Kingdom), Istanbul (Türkiye) and Tehran (Iran). Among places with at least 20 works in it, it is an unusually large share of all research in Obninsk and Iranshahr.

Largest cities, 2022-now

  1. 1 BeijingChina 676 works
  2. 2 LondonUnited Kingdom 307 works
  3. 3 IstanbulTürkiye 267 works
  4. 4 TehranIran 239 works
  5. 5 SeoulSouth Korea 226 works
  6. 6 ShanghaiChina 205 works
  7. 7 São PauloBrazil 191 works
  8. 8 JakartaIndonesia 187 works
  9. 9 MelbourneAustralia 181 works
  10. 10 TokyoJapan 176 works

Where it is the local speciality

  1. ObninskRU · 22.1 works18×
  2. IranshahrIR · 34.9 works16×
← less than its size predicts1×more →

Location quotient: how much more of its research is in Radiological and Ultrasound Technology than the world average.

See Radiological and Ultrasound Technology on the map

Radiological and Ultrasound Technology research by country

The best places for Radiological and Ultrasound Technology research inside each country, with that country's researchers and world standing.

Where is the best place to study Radiological and Ultrasound Technology?

Among universities, judged by research, Harvard University, University of Toronto and Hong Kong Polytechnic University score highest, combining standing in the field's ranking, citation excellence, specialisation, size, growth and international reach. Research strength is one signal when choosing where to study; it does not measure teaching.

0%20%40%mean 17.24%fractional works in this field (log) →share of work in the world top 10% →Hong Kong Polytechni…Tsinghua UniversityUniversity of TorontoHarvard University
above the meannear itbelow it

One dot per university in the first ten of the table below, at the default weights. The upper left is the interesting corner: small places doing unusually strong work.

Standingthis field's institution ranking, three quarters all time and a quarter 2022-now
50%
Citation excellenceshare of its work in the world top 10%, 2022-now and all time averaged
20%
Specialisationhow much of its work is in this field, counted up to 10× the world share
5%
Sizeits output in this field, on a log scale
15%
Growthoutput growth, counted from -20% to +20%
5%
Internationalshare of its work with a co-author abroad
5%
Each slider sets a weight; the share it gets of the score is beside it.
#UniversityScoreRank in field (all time)Top 10%SpecialisationWorksGrowth
1Harvard UniversityUnited States 77.5#1 (#1)13.1%1.2×94 -20.6%
2University of TorontoCanada 66.6#3 (#3)13.8%1.8×89 +12.1%
3Hong Kong Polytechnic UniversityChina 52.2- (#21)31.7%2.8×59 +22.4%
4Tsinghua UniversityChina 51.6- (#7)19.8%1.1×59 +46.2%
5Johns Hopkins UniversityUnited States 51.1- (#4)9.7%1.7×62 +1.9%
6National University of SingaporeSingapore 50.0- (#11)23.4%1.4×39 +20.8%
7UNSW SydneyAustralia 45.6- (#17)20.2%2.0×44 +27.2%
8University of MichiganUnited States 45.2- (#10)10.0%1.6×60 +16.3%
9Monash UniversityAustralia 44.9- (#12)20.1%2.4×56 -14.5%
10University of WashingtonUnited States 43.4- (#5)10.6%1.3×36 -26.8%

Universities only. The score blends standing (50%), citation excellence (20%), size (15%), specialisation (5%), growth (5%), international reach (5%), 2022-now; growth compares 2018-21 with 2022-25 and counts up to +20%, since a jump from a small base is mostly noise. Standing is the score in this field's institution ranking, three quarters over all time and a quarter 2022-now; excellence averages the two windows too. Four years alone undercount fields such as AI, where many conference and arXiv papers from 2022 on carry no affiliation in the data.

Every institution in Radiological and Ultrasound Technology, country by country

Is Radiological and Ultrasound Technology research growing?

Output in 2022-2025 was 16% higher than in 2018-2021, peaking in 2025. The fastest-growing topics are Occupational Health and Safety Research and Family and Patient Care in Intensive Care Units.

still counting19801990200020102020
grewheldshrank

The same series as a ribbon: one cell per year, darker for more. The line above answers how much; this answers when.

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is Radiological and Ultrasound Technology as a percentage of every work published that year, 0.12% in 2024.

still counting0.050%0.10%0.15%Radiological and Ultrasound Technology0.11% in 202519801990200020102020

Fractional works of Radiological and Ultrasound Technology over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

Year by year.

still counting5%10%15%Radiological and Ultrasound Technology10.1% in 2025200020102020

Of each year's works in it, the share that reached the world's 10% most cited for their field and year. A field is the world for its own topics, so there is no other line to hold it against.

Which topics inside it are moving

Growth and decline on one axis around a shared zero. Two lists side by side hide the thing that matters: whether the growth dwarfs the decline, or the other way round.

  1. Occupational Health and Safety Research+25%
  2. Family and Patient Care in Intensive Care Units+13%
  3. Radioactivity and Radon Measurements-1%
← shrinkingno changegrowing →

Growth in output from 2018-21 to 2022-25. Every topic is a page of its own.

What does Radiological and Ultrasound Technology include?

Share who leads Radiological and Ultrasound Technology

Who leads Radiological and Ultrasound Technology, on Science Explorer

A card with the countries and institutions that lead Radiological and Ultrasound Technology, for a post or a slide.

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