J Machac

679 total citations
14 papers, 486 citations indexed

About

J Machac is a scholar working on Radiology, Nuclear Medicine and Imaging, Cardiology and Cardiovascular Medicine and Genetics. According to data from OpenAlex, J Machac has authored 14 papers receiving a total of 486 indexed citations (citations by other indexed papers that have themselves been cited), including 7 papers in Radiology, Nuclear Medicine and Imaging, 4 papers in Cardiology and Cardiovascular Medicine and 2 papers in Genetics. Recurrent topics in J Machac's work include Cardiac Imaging and Diagnostics (5 papers), Medical Imaging Techniques and Applications (3 papers) and ECG Monitoring and Analysis (2 papers). J Machac is often cited by papers focused on Cardiac Imaging and Diagnostics (5 papers), Medical Imaging Techniques and Applications (3 papers) and ECG Monitoring and Analysis (2 papers). J Machac collaborates with scholars based in United States, Belgium and Czechia. J Machac's co-authors include Stephen L. Winters, J. Anthony Gomes, Debra Stewart, Michael Sacher, Mordechai Lorberboym, Joseph A. Diamond, Milena J. Henzlova, Chun K. Kim, H. R. Schelbert and David Segal and has published in prestigious journals such as Journal of the American College of Cardiology, The American Journal of Cardiology and European Journal of Nuclear Medicine and Molecular Imaging.

In The Last Decade

J Machac

13 papers receiving 469 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
J Machac United States	9	267	196	59	53	49	14	486
Jerome G. Jacobstein United States	11	192 0.7×	180 0.9×	33 0.6×	54 1.0×	19 0.4×	25	358
Igor Singer United States	16	690 2.6×	77 0.4×	40 0.7×	23 0.4×	49 1.0×	42	862
Jean Pierre Carteaux France	8	198 0.7×	76 0.4×	43 0.7×	38 0.7×	39 0.8×	8	415
Patrick Krumm Germany	14	285 1.1×	348 1.8×	114 1.9×	101 1.9×	27 0.6×	60	663
Moritz Marquardt Germany	4	176 0.7×	455 2.3×	124 2.1×	22 0.4×	60 1.2×	6	603
Andreas Espinoza Norway	12	211 0.8×	79 0.4×	145 2.5×	82 1.5×	19 0.4×	47	467
Atsushi Doi Japan	12	556 2.1×	168 0.9×	17 0.3×	37 0.7×	22 0.4×	60	658
Jacek Kowalczyk Poland	13	491 1.8×	106 0.5×	20 0.3×	23 0.4×	44 0.9×	61	642
N Tamaki Japan	7	141 0.5×	248 1.3×	32 0.5×	53 1.0×	43 0.9×	18	339
Tung-Hsin Wu Taiwan	14	118 0.4×	355 1.8×	189 3.2×	99 1.9×	25 0.5×	52	558

Countries citing papers authored by J Machac

Since Specialization

Citations

This map shows the geographic impact of J Machac'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 J Machac with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites J Machac more than expected).

Fields of papers citing papers by J Machac

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J Machac. 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 J Machac. The network helps show where J Machac may publish in the future.

Co-authorship network of co-authors of J Machac

This figure shows the co-authorship network connecting the top 25 collaborators of J Machac. A scholar is included among the top collaborators of J Machac 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 J Machac. J Machac is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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14 of 14 papers shown

Izquierdo‐Garcia, David, Stephen J. Sawiak, Karin Knešaurek, et al.. (2014). Comparison of MR-based attenuation correction and CT-based attenuation correction of whole-body PET/MR imaging. European Journal of Nuclear Medicine and Molecular Imaging. 41(8). 1574–1584. 37 indexed citations

Diamond, Joseph A., Amgad N. Makaryus, David Sandler, J Machac, & Milena J. Henzlova. (2008). Normal or near normal myocardial perfusion stress imaging in patients with severe coronary artery disease. Journal of Cardiovascular Medicine. 9(8). 820–825. 11 indexed citations

Strausś, H. William, D. Douglas Miller, Mark D. Wittry, et al.. (2008). Procedure Guideline for Myocardial Perfusion Imaging 3.3. Journal of Nuclear Medicine Technology. 36(3). 155–161. 71 indexed citations

Machac, J, et al.. (2001). Synthesis of radiotracer for liver fibrosis. Journal of Labelled Compounds and Radiopharmaceuticals. 44(S1). 1 indexed citations

Croft, Lori B., Robert Shapiro, Steven Fruchtman, et al.. (2000). Comparison of four echocardiographic techniques for measuring left ventricular ejection fraction. The American Journal of Cardiology. 86(12). 1358–1362. 43 indexed citations

Diamond, Joseph A., et al.. (1999). Effect of Long-term Eprosartan Versus Enalapril Antihypertensive Therapy on Left Ventricular Mass and Coronary Flow Reserve in Stage I-II Hypertension. Current Medical Research and Opinion. 15(1). 1–8. 17 indexed citations

Lorberboym, Mordechai, et al.. (1998). Thallium-201 retention in focal intracranial lesions for differential diagnosis of primary lymphoma and nonmalignant lesions in AIDS patients.. PubMed. 39(8). 1366–9. 48 indexed citations

Vallabhajosula, Shankar, Jack Hirschowitz, & J Machac. (1997). Effect of haloperidol dose on iodine-123-IBZM brain SPECT imaging in schizophrenic patients.. PubMed. 38(2). 203–7. 8 indexed citations

Lorberboym, Mordechai, et al.. (1996). Brain perfusion imaging during preoperative temporary balloon occlusion of the internal carotid artery.. PubMed. 37(3). 415–9. 39 indexed citations

10.

Lorberboym, Mordechai, et al.. (1996). THALLIUM-201 BRAIN SPECT AND CT/MRI IMAGING FOR DIFFERENTIAL DIAGNOSIS OF CEREBRAL TOXOPLASMOSIS AND PRIMARY CNS LYMPHOMA. Clinical Nuclear Medicine. 21(4). 353–353. 2 indexed citations

11.

Machac, J, et al.. (1993). Detection of silent left ventricular dysfunction during daily activities in coronary artery disease patients by the nuclear VEST.. PubMed. 37(4). 198–206. 3 indexed citations

12.

Gomes, J. Anthony, et al.. (1991). Clinical and electrophysiologic determinants, treatment and survival of patients with sustained malignant ventricular tachyarrhythmias occurring late after myocardial infarction. Journal of the American College of Cardiology. 17(2). 320–326. 16 indexed citations

13.

Gomes, J. Anthony, et al.. (1989). The prognostic significance of quantitative signal-averaged variables relative to clinical variables, site of myocardial infarction, ejection fraction and ventricular premature beats: A prospective study. Journal of the American College of Cardiology. 13(2). 377–384. 190 indexed citations

14.

Machac, J, et al.. (1985). Cardiotoxic effects of chemicals.. PubMed. 52(8). 650–5.

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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