Subfield · Radiology, Nuclear Medicine and Imaging
Top Countries in Radiology, Nuclear Medicine and Imaging Research
United States ranks first in 2022–2025, out of 66 ranked countries.
Composite score: field-normalised excellence, output and total citations weighted 50 / 30 / 20, each as a percentile so no single heavy-tailed measure dominates. Floor: 100 fractional works in this field.
Ranked by research quality, 2022–2025
| # | Country | Score | Top-10% rate | Works | Citations | All time |
|---|---|---|---|---|---|---|
| 1 | United States | 100.0 | 15.2% | 40k | 247k | #1 |
| 2 | China | 83.5 | 20.8% | 32k | 231k | #3 |
| 3 | India | 73.8 | 11.8% | 16k | 69k | #10 |
| 4 | United Kingdom | 66.9 | 17.6% | 7.9k | 55k | #2 |
| 5 | Germany | 61.6 | 17.5% | 8.3k | 57k | #4 |
| 6 | Italy | 57.2 | 20.6% | 5.8k | 41k | #8 |
| 7 | Australia | 53.6 | 21.9% | 3.2k | 27k | #11 |
| 8 | Canada | 50.4 | 18.0% | 4.3k | 32k | #7 |
| 9 | France | 47.6 | 14.9% | 4.6k | 27k | #5 |
| 10 | South Korea | 45.0 | 15.9% | 4.7k | 29k | #13 |
| 11 | Japan | 42.8 | 10.8% | 7.7k | 33k | #9 |
| 12 | Netherlands | 40.7 | 22.0% | 2.8k | 23k | #6 |
| 13 | Saudi Arabia | 38.8 | 20.3% | 1.8k | 15k | #22 |
| 14 | Spain | 37.0 | 14.1% | 3.6k | 18k | #14 |
| 15 | Türkiye | 35.4 | 9.0% | 4.1k | 15k | #20 |
| 16 | Switzerland | 33.8 | 20.2% | 2.1k | 16k | #12 |
| 17 | Iran | 32.4 | 14.2% | 2.7k | 15k | #25 |
| 18 | ?? | 31.0 | 16.5% | 1.6k | 11k | #21 |
| 19 | Pakistan | 29.7 | 11.2% | 1.6k | 8.7k | #33 |
| 20 | Egypt | 28.5 | 9.1% | 2.4k | 8.9k | #31 |
| 21 | Taiwan | 27.3 | 16.8% | 1.7k | 12k | #27 |
| 22 | Singapore | 26.2 | 23.3% | 870 | 7.7k | #18 |
| 23 | Bangladesh | 25.2 | 15.7% | 859 | 5.3k | #37 |
| 24 | Hong Kong | 24.1 | 28.3% | 638 | 7.3k | #29 |
| 25 | Poland | 23.2 | 14.7% | 1.7k | 9.1k | #26 |
| 26 | Brazil | 22.2 | 8.2% | 3.1k | 10k | #24 |
| 27 | Denmark | 21.3 | 18.2% | 1.1k | 7.7k | #17 |
| 28 | Belgium | 20.5 | 17.7% | 1.1k | 7.4k | #16 |
| 29 | Sweden | 19.6 | 18.0% | 1.2k | 8k | #15 |
| 30 | Malaysia | 18.8 | 12.0% | 1k | 5k | #38 |
| 31 | Portugal | 18.0 | 15.3% | 986 | 5.5k | #34 |
| 32 | Greece | 17.3 | 17.2% | 820 | 5.1k | #35 |
| 33 | United Arab Emirates | 16.5 | 22.1% | 437 | 4.3k | #45 |
| 34 | Russia | 15.8 | 4.1% | 4.1k | 8.8k | #28 |
| 35 | Austria | 15.1 | 19.0% | 908 | 5.6k | #23 |
| 36 | Norway | 14.5 | 20.7% | 582 | 5.1k | #30 |
| 37 | Romania | 13.8 | 18.5% | 647 | 4k | #46 |
| 38 | Ireland | 13.2 | 14.3% | 599 | 3.2k | #36 |
| 39 | South Africa | 12.6 | 16.8% | 504 | 3.4k | #40 |
| 40 | Iraq | 12.0 | 9.2% | 1k | 3.6k | #47 |
| 41 | Thailand | 11.4 | 13.4% | 778 | 3.6k | #44 |
| 42 | Mexico | 10.8 | 8.5% | 876 | 3.3k | #42 |
| 43 | Israel | 10.2 | 14.9% | 812 | 4.6k | #19 |
| 44 | Jordan | 9.7 | 22.0% | 306 | 3.9k | #50 |
| 45 | Indonesia | 9.1 | 3.4% | 2.2k | 3.8k | #48 |
| 46 | Finland | 8.6 | 18.8% | 558 | 4.2k | #32 |
| 47 | Nigeria | 8.1 | 9.3% | 600 | 2k | #53 |
| 48 | Morocco | 7.6 | 11.1% | 540 | 1.8k | #55 |
| 49 | Vietnam | 7.1 | 11.5% | 468 | 2.2k | #52 |
| 50 | Czechia | 6.6 | 12.1% | 590 | 2.6k | #39 |
| 51 | Ethiopia | 6.2 | 22.2% | 201 | 1.6k | #56 |
| 52 | Hungary | 5.7 | 12.9% | 429 | 2.3k | #43 |
| 53 | New Zealand | 5.2 | 14.8% | 338 | 2k | #41 |
| 54 | Croatia | 4.8 | 10.9% | 265 | 1.1k | #51 |
| 55 | Chile | 4.4 | 13.1% | 288 | 1.4k | #62 |
| 56 | Tunisia | 3.9 | 9.2% | 334 | 1.3k | #64 |
| 57 | Colombia | 3.5 | 7.4% | 396 | 1.1k | #61 |
| 58 | Argentina | 3.1 | 8.0% | 382 | 1.1k | #49 |
| 59 | Ukraine | 2.7 | 3.6% | 658 | 929 | #60 |
| 60 | Slovenia | 2.3 | 17.2% | 202 | 1.2k | #57 |
| 61 | Algeria | 1.9 | 10.5% | 239 | 913 | #71 |
| 62 | Serbia | 149.2 | 9.4% | 267 | 953 | #59 |
| 63 | Nepal | 111.0 | 5.9% | 337 | 790 | #69 |
| 64 | Philippines | 73.4 | 7.3% | 252 | 708 | #67 |
| 65 | Bulgaria | 36.4 | 6.8% | 279 | 777 | #63 |
| 66 | Ecuador | 0.0 | 5.6% | 208 | 324 | — |
countries ranked worldwide in Radiology, Nuclear Medicine and Imaging (66). rank on the composite score within the stated pool. The score track runs 0 to 100; the rate track carries no world mark, because the world rate differs by field.
How spread out this pool is
Every row above on one axis — one tick each, right is a higher score. A field where the top few are far clear of everyone and one that runs down evenly look identical as a table.
One bar per band of score, counting the rows on this page.
Ranked by volume, 2022–2025
- 1 United States 40k works
- 2 China 32k works
- 3 India 16k works
- 4 Germany 8.3k works
- 5 United Kingdom 7.9k works
- 6 Japan 7.7k works
- 7 Italy 5.8k works
- 8 South Korea 4.7k works
- 9 France 4.6k works
- 10 Canada 4.3k works
- 11 Türkiye 4.1k works
- 12 Russia 4.1k works