Ammara Usman

1.7k total citations · 1 hit paper
21 papers, 1.4k citations indexed

About

Ammara Usman is a scholar working on Pulmonary and Respiratory Medicine, Cardiology and Cardiovascular Medicine and Radiology, Nuclear Medicine and Imaging. According to data from OpenAlex, Ammara Usman has authored 21 papers receiving a total of 1.4k indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Pulmonary and Respiratory Medicine, 8 papers in Cardiology and Cardiovascular Medicine and 7 papers in Radiology, Nuclear Medicine and Imaging. Recurrent topics in Ammara Usman's work include Cerebrovascular and Carotid Artery Diseases (14 papers), Cardiovascular Health and Disease Prevention (8 papers) and Acute Ischemic Stroke Management (5 papers). Ammara Usman is often cited by papers focused on Cerebrovascular and Carotid Artery Diseases (14 papers), Cardiovascular Health and Disease Prevention (8 papers) and Acute Ischemic Stroke Management (5 papers). Ammara Usman collaborates with scholars based in United Kingdom, Singapore and Pakistan. Ammara Usman's co-authors include Umar Sadat, Jonathan R. Boyle, Paul D. Hayes, Richard Solomon, Jonathan H. Gillard, Martin J. Graves, Andrew J. Patterson, Tjun Yip Tang, Jianmin Yuan and Doménico Ribatti and has published in prestigious journals such as Journal of the American College of Cardiology, Scientific Reports and Magnetic Resonance in Medicine.

In The Last Decade

Ammara Usman

21 papers receiving 1.4k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Contrast Medium-Induced Acute Kidney Injury

2015 1.1k citations Umar Sadat, Ammara Usman et al. Cardiorenal Medicine profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Ammara Usman United Kingdom	10	801	301	296	284	278	21	1.4k
Dennis G. Moledina United States	25	1.1k 1.3×	184 0.6×	259 0.9×	160 0.6×	316 1.1×	66	1.8k
G. Marggraf Germany	13	762 1.0×	237 0.8×	191 0.6×	300 1.1×	333 1.2×	36	1.3k
Jason H. Greenberg United States	21	851 1.1×	209 0.7×	156 0.5×	150 0.5×	262 0.9×	71	1.3k
Pei‐Chun Fan Taiwan	22	689 0.9×	252 0.8×	303 1.0×	108 0.4×	338 1.2×	86	1.4k
Sevag Demirjian United States	25	974 1.2×	247 0.8×	1.3k 4.4×	150 0.5×	615 2.2×	66	2.4k
Melinda Carter United States	12	529 0.7×	596 2.0×	163 0.6×	314 1.1×	260 0.9×	16	1.4k
Yacov Shacham Israel	23	471 0.6×	307 1.0×	169 0.6×	77 0.3×	325 1.2×	133	1.5k
Andy Adam United Kingdom	14	1.3k 1.6×	75 0.2×	615 2.1×	404 1.4×	337 1.2×	21	1.9k
Russel Hirsch United States	22	472 0.6×	867 2.9×	672 2.3×	222 0.8×	684 2.5×	94	2.3k
Raphael M. Cohen United States	21	713 0.9×	96 0.3×	442 1.5×	76 0.3×	234 0.8×	52	1.5k

Countries citing papers authored by Ammara Usman

Since Specialization

Citations

This map shows the geographic impact of Ammara Usman's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ammara Usman with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ammara Usman more than expected).

Fields of papers citing papers by Ammara Usman

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ammara Usman. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ammara Usman. The network helps show where Ammara Usman may publish in the future.

Co-authorship network of co-authors of Ammara Usman

This figure shows the co-authorship network connecting the top 25 collaborators of Ammara Usman. A scholar is included among the top collaborators of Ammara Usman based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ammara Usman. Ammara Usman is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Shamir, M. Farasat, Ammara Usman, Tayyaba Naz, Ali H. Alkhaldi, & Akram Ali. (2023). Bardeen Tolman–Kuchowicz spheres in logarithmic-corrected R2 gravity. International Journal of Geometric Methods in Modern Physics. 20(11). 5 indexed citations

Lockhart, Sam, et al.. (2021). The excess insulin requirement in severe COVID‐19 compared to non‐COVID‐19 viral pneumonitis is related to the severity of respiratory failure and pre‐existing diabetes. Endocrinology Diabetes & Metabolism. 4(3). e00228–e00228. 8 indexed citations

Usman, Ammara, Andrew J. Patterson, Jianmin Yuan, et al.. (2020). Ferumoxytol-enhanced three-dimensional magnetic resonance imaging of carotid atheroma- a feasibility and temporal dependence study. Scientific Reports. 10(1). 1808–1808. 16 indexed citations

Cluroe, Alison D., et al.. (2020). Simultaneous MRI water‐fat separation and quantitative susceptibility mapping of carotid artery plaque pre‐ and post‐ultrasmall superparamagnetic iron oxide‐uptake. Magnetic Resonance in Medicine. 84(2). 686–697. 9 indexed citations

Sadat, Umar, Ammara Usman, Mohammed M. Chowdhury, et al.. (2018). Association Between Abdominal Visceral Artery Calcification and All-Cause Mortality—A Computerized Tomography Imaging-Based Longitudinal Follow-Up Study. Angiology. 70(3). 237–243. 7 indexed citations

Sadat, Umar, Ammara Usman, & Jonathan H. Gillard. (2017). Imaging pathobiology of carotid atherosclerosis with ultrasmall superparamagnetic particles of iron oxide. Current Opinion in Cardiology. 32(4). 437–440. 9 indexed citations

Yuan, Jianmin, Ammara Usman, Scott A. Reid, et al.. (2017). Three-dimensional black-blood multi-contrast carotid imaging using compressed sensing: a repeatability study. Magnetic Resonance Materials in Physics Biology and Medicine. 31(1). 183–190. 7 indexed citations

Yuan, Jianmin, Martin J. Graves, Andrew J. Patterson, et al.. (2017). The development and optimisation of 3D black-blood R2* mapping of the carotid artery wall. Magnetic Resonance Imaging. 44. 104–110. 4 indexed citations

Yuan, Jianmin, Gregory C. Makris, Andrew J. Patterson, et al.. (2017). Relationship between carotid plaque surface morphology and perfusion: a 3D DCE-MRI study. Magnetic Resonance Materials in Physics Biology and Medicine. 31(1). 191–199. 16 indexed citations

10.

Usman, Ammara, Andrew J. Patterson, Umar Sadat, et al.. (2016). Assessment of Carotid Plaque Inflammation in Diabetic and Nondiabetic Patients—An Exploratory Ultrasmall Superparamagnetic Iron Oxide-Enhanced Magnetic Resonance Imaging Study. Journal of Stroke and Cerebrovascular Diseases. 26(4). 858–862. 8 indexed citations

11.

Usman, Ammara, Umar Sadat, Zhongzhao Teng, et al.. (2016). Magnetic Resonance Imaging-Based Assessment of Carotid Atheroma: a Comparative Study of Patients with and without Coronary Artery Disease. Journal of Stroke and Cerebrovascular Diseases. 26(2). 347–351. 2 indexed citations

12.

Yuan, Jianmin, Ammara Usman, Scott A. Reid, et al.. (2016). Three-dimensional black-blood T 2 mapping with compressed sensing and data-driven parallel imaging in the carotid artery. Magnetic Resonance Imaging. 37. 62–69. 20 indexed citations

13.

Noorani, Ayesha, Umar Sadat, Katie E. Rollins, et al.. (2016). Assessment of Renal Injury in Patients Undergoing Elective EVAR Using Urinary Neutrophil Gelatin-Associated Lipocalin, Interleukin 18, and Retinol-Binding Protein. Angiology. 68(6). 547–552. 6 indexed citations

14.

Sadat, Umar, Ammara Usman, Jonathan R. Boyle, Paul D. Hayes, & Richard Solomon. (2015). Contrast Medium-Induced Acute Kidney Injury. Cardiorenal Medicine. 5(3). 219–228. 1081 indexed citations breakdown →

15.

Usman, Ammara, Umar Sadat, Martin J. Graves, & Jonathan H. Gillard. (2015). Magnetic resonance imaging of atherothrombotic plaques. Journal of Clinical Neuroscience. 22(11). 1722–1726. 6 indexed citations

16.

Usman, Ammara, Doménico Ribatti, Umar Sadat, & Jonathan H. Gillard. (2015). From Lipid Retention to Immune-Mediate Inflammation and Associated Angiogenesis in the Pathogenesis of Atherosclerosis. Journal of Atherosclerosis and Thrombosis. 22(8). 739–749. 29 indexed citations

17.

Sadat, Umar, Ammara Usman, Jonathan H. Gillard, & Jonathan R. Boyle. (2013). Does Ascorbic Acid Protect Against Contrast-Induced Acute Kidney Injury in Patients Undergoing Coronary Angiography. Journal of the American College of Cardiology. 62(23). 2167–2175. 84 indexed citations

18.

Sadat, Umar, Ammara Usman, Simon Howarth, et al.. (2013). Carotid Artery Stiffness in Patients with Symptomatic Carotid Artery Disease with Contralateral Asymptomatic Carotid Artery Disease and in Patients with Bilateral Asymptomatic Carotid Artery Disease: A Cine Phase-contrast Carotid MR Study. Journal of Stroke and Cerebrovascular Diseases. 23(4). 743–748. 5 indexed citations

19.

Sadat, Umar, Simon Howarth, Ammara Usman, et al.. (2012). Sequential Imaging of Asymptomatic Carotid Atheroma Using Ultrasmall Superparamagnetic Iron Oxide–enhanced Magnetic Resonance Imaging: A Feasibility Study. Journal of Stroke and Cerebrovascular Diseases. 22(8). e271–e276. 25 indexed citations

20.

Sadat, Umar, Simon Howarth, Ammara Usman, et al.. (2012). Effect of Low-and High-Dose Atorvastatin on Carotid Artery Distensibility Using Carotid Magnetic Resonance Imaging ^|^mdash;A Post-Hoc Sub Group Analysis of ATHEROMA (Atorvastatin Therapy: Effects on Reduction of Macrophage Activity) Study. Journal of Atherosclerosis and Thrombosis. 20(1). 46–56. 7 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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