Stephan Imfeld, PhD, MD



A.K. Hemmig, C. Rottenburger, L. Baruti, N. Mensch, M. Aschwanden, D. Kyburz, M. Pradella, D. Staub, M. Stegert, C.T. Berger, S. Imfeld, G. Sommer, T. Daikeler (2024):

Imaging to predict early relapses after treatment discontinuation in patients with large vessel giant cell arteritis - a cohort study.
Seminars in Arthritis and Rheumatism.  

A.K. Hemmig, C. Rottenburger, M. Aschwanden, C.T. Berger, D. Kyburz, M. Pradella, D. Staub, S. Imfeld, G. Sommer, T. Daikeler (2023):

Magnetic resonance imaging findings corresponding to vasculitis as defined by [18F]FDGpositron emission tomography or ultrasound.
Diagnostics 2023,13,3559.  

A.K. Hemmig, M. Aschwanden, C.T. Berger, D. Kyburz, N. Mensch, D. Staub, M. Stegert, S.Imfeld, T. Daikeler (2023):

Prior polymyalgia rheumatica is associated with sonographic vasculitic changes in newly diagnosed patients with giant cell arteritis.

N. Mensch, A.K. Hemmig, M. Aschwanden, M. Stegert, M. Recher, S. Imfeld, D. Kyburz, C.T. Berger, T. Daikeler (2023):

Rapid glucocorticoid tapering regimen in giant cell arteritis patients - a single centre cohort study.
RMD Open 2023 Jul;9(3):e003301. 

A.K. Hemmig, M. Aschwanden, S. Imfeld, C.T. Berger, T. Daikeler (2023):

A diagnostic performance study of the 2022 American College of Rheumatology/EULAR classification criteria for giant cell arteritis in a cohort of patients presenting with suspected giant cell arteritis.
Arthritis & Rheumatology 75(6):1075-1077. 

A.K. Hemmig, M. Aschwanden, S. Seiler, C.T. Berger, P. Köhn, D. Kyburz, N. Mensch, D. Staub, M. Stegert, S. Imfeld, T. Daikeler (2023):

Long delay from symptom onset to first consultation contributes to permanent vision loss in patients with giant cell arteritis: a cohort study.
RMD Open 2023;9:e002866. 

A.K. Hemmig, D. Gozzoli, L. Werlen, H. Ewald, M. Aschwanden, D. Blockmans, E. Brouwer, R.R.C. Buchanan, D. Camellino, C. Campochiaro, M.A. Cimmino, H. Corominas, V. Gloy, L. Henckaerts, D. Kyburz, P. Moya-Alvarado, C.E. Owen, M. Stegert, A. Tomelleri, Y. van Sleen, H. Yamashita, S. Imfeld, C.T. Berger, L.G. Hemkens, T. Daikeler (2022):

Subclinical giant cell arteritis in new onset polymyalgia rheumatica: a systematic review and meta-analysis of individual patient data.
Seminars in Arthritis and Rheumatism. 

S. Imfeld, D. Scherrer, N. Mensch, M. Aschwanden, D. Staub, C.T. Berger, T. Daikeler, C. Rottenburger (2022):

A simplified PET/CT measurement routine with excellent diagnostic accuracy for the diagnosis of giant cell arteritis.
Diagnostics 12(3):728 

C. Rottenburger, N. Mensch, S. Imfeld, M. Aschwanden, K. Glatz, D. Staub, C. Berger, T. Daikeler (2021):

18F-FDG PET/CT compared with ultrasound and biopsy for detection of vasculitis of the temporal artery branches.
Swiss Med Wkly, Jun 23;151:w20512

Ch. Nickel, J. Kellet, T. Cooksley, L.E. Lyngholm, S. Chang, S. Imfeld, R. Bingisser, M. Brabrand (2020):

The diagnoses and outcomes of emergency patients with an elevated D-dimer over the next 90 days.
Am J Med 134(2):260-266. 

I. Mamadnabiev, S. Imfeld, L. Gürke, M. Aschwanden, A. Isaak (2020):

A telemedicine communication exchange network in Gorno-Badakhshan Autonomic Oblast in collaboration with Swiss Surgical Teams.
Journal of Telemedicine and Telecare 

D. Staub, M. Aschwanden, S. Imfeld (2019):

Karotisstenose - Abschätzung des Embolierisikos durch sonographische Plaquemorphologie und Plaquevaskularisation
Gefässchirurgie 25(2):84-90 

U. Meier, F. College, S. Imfeld, T. Briellmann, E. Scheurer, K. Mercer-Chalmers-Bender, F. Dussy (2019):

Distribution pattern of common drugs of abuse, ethyl glucuronide, and benzodiazepines in hair across the scalp.
Drug Testing and Analysis 11:1522-1541 

S. Imfeld, M. Aschwanden, C. Rottenburger, E. Schegk, C.T. Berger, D. Staub, T.Daikeler (2019):

[18F]FDG positron emission tomography and ultrasound in the diagnosis of giant cell arteritis: congruent or complementary imaging methods?
Rheumatology 59(4):772-778 

F. Vogel, D. Staub, M. Aschwanden, M. Siegemund, S. Imfeld, G. Balestra, H.H. Keo, H. Uthoff (2019):

Bedside hand vein inspection for noninvasive central venous pressure assessment.
The American Journal of Emergency Medicine 

M. Aschwanden, S. Imfeld, W. Schäberle, D. Staub, T.Daikeler (2019):

Ultraschall bei Riesenzellarteritis.
Gefässchirurgie 24(1):68-74 

M. Aschwanden, E. Schegk, S. Imfeld, D. Staub, C. Rottenburger, C.T. Berger, T.Daikeler (2019):

Vessel wall plasticity in large vessel giant cell arteritis: an ultrasound follow-up study.
Rheumatology 58(5):792-797 

S. Imfeld, C. Rottenburger, E. Schegk, M. Aschwanden, F. Juengling, D. Staub, M. Recher, D. Kyburz, C.T. Berger, T.Daikeler (2018):

[18F]FDG Positron emission tomography in patients presenting with suspicion of Giant Cell Arteritis - lessons from a vasculitis clinic.
European Heart Journal - Cardiovascular Imaging 19(8):933-940 

M. Kaspar, S. Imfeld, S. Partovi, M. Aschwanden, T. Baldi, A. Dikkes, D.R. Vogt, D.A. Tsakiris, D. Staub (2017):

Perivascular Perfusion on Contrast-Enhanced Ultrasound (CEUS) IsAssociated with Inflammation in Patients with Acute Deep Vein Thrombosis.
Thrombosis and Hemostasis 117(11):2146-2155 

A. Dikkes, M. Aschwanden, S. Imfeld, K. Glatz, J. Messerli, D. Staub, T. Daikeler (2017):

Takayasu arteritis: active or not, that's the question
Rheumatology 56(10):1818-1819 

L. Spinedi, M. Aschwanden, P. Broz, S. Imfeld, T. Baldi, K. Jaeger, D. Staub, H. Uthoff (2017):

Endoluminal Treatment of Varicose Veins: Value of Duplex Ultrasound (Part 2)
Ultraschall Med. 38(1):14-32 

L. Spinedi, P. Broz, S. Imfeld, D. Staub, K. Jaeger, M. Aschwanden, H. Uthoff (2016):

Evaluation of Varicose Veins of the Lower Extremity: the Value of the Duplex Ultrasound (Part 1).
Ultraschall Med. 37(4):348-65 

S. Partovi, M. Kaspar, M. Aschwanden, C. Lopresti, S. Madan, H. Uthoff, S. Imfeld, D. Staub (2015):

Contrast-enhanced ultrasound after endovascular aortic repair - current status and future perspectives
Cardiovasc Diagn Ther: 5(6):454-463 

M. Aschwanden, S. Imfeld, D. Staub, T. Baldi, U. Walker, C. Berger, C. Hess, T. Daikeler (2015):

The ultrasound compression sign to diagnose temporal giant cell arteritis shows an excellent interobserver agreement.
Clin Exp Rheumatol 22(2 Suppl 89):113-5  

A.T. Cohen, S. Imfeld, J. Markham, S. Granziera (2015):

The use of aspirin for primary and secondary prevention in venous thromboembolism and other cardiovascular disorders.
Thromb Res.135:217-225.  

M. Kaspar, S. Partovi, M. Aschwanden, S. Imfeld, T. Baldi, H. Uthoff, D. Staub (2015):

Assessment of microcirculation by contrast-enhanced ultrasound: a new approach in vascular medicine
Swiss Medical Weekly Jan 14;145:w14047.  

A.T. Cohen, S. Imfeld, T. Rider (2014):

Phase III trials of New Oral Anticoagulants in the Acute Treatment and Secondary Prevention of VTE: Comparison and Critique of Study Methodology and Results.
Advances in Therapy 31(5):473-493.  

R. Haller, S. Imfeld (2013):

Das Projekt Habitalp. Lebensräume erfassen und beschreiben.
In: H.Haller, A.Eisenhut, R.Haller (Hrsg.): Atlas des Schweizerischen Nationalparks. Die ersten 100 Jahre.
Nat.park Forsch. Schweiz 99/1. Bern: Haupt Verlag: 16-17.  

H. Haller, D. Cherix, Y. Gonseth, S. Imfeld (2013):

Biodiversität im SNP. Tagfalter als Gradmesser für die Artenvielfalt.
In: H.Haller, A.Eisenhut, R.Haller (Hrsg.): Atlas des Schweizerischen Nationalparks. Die ersten 100 Jahre.
Nat.park Forsch. Schweiz 99/1. Bern: Haupt Verlag: 70-71.  

R. Haller, P. Hauenstein, S. Imfeld (2013):

Im Fokus alter Luftbilder. Landschaftswandel in der Val Mingèr.
In: H.Haller, A.Eisenhut, R.Haller (Hrsg.): Atlas des Schweizerischen Nationalparks. Die ersten 100 Jahre.
Nat.park Forsch. Schweiz 99/1. Bern: Haupt Verlag: 188-189.  

S. Partovi, A.C. Schulte, D. Staub, B. Jacobi, M. Aschwanden, U.A. Walker, S. Imfeld, P. Broz, D. Benz, L. Zipp, M. Takes, K.A. Jäger, R.W. Huegli, D. Bilecen (2013):

Correlation of skeletal muscle blood oxygenation level-dependent MRI and skin laser doppler flowmetry in patients with systemic sclerosis
J Magn Reson Imaging 40(6):1408-13.  

S. Partovi, M. Aschwanden, B. Jacobi, A.-C. Schulte, U.A. Walker, D. Staub, S. Imfeld, P. Broz, D. Benz, L. Zipp, K.A. Jäger, M.R. Robbin, R.W. Huegli, D. Bilecen (2013):

Correlation of muscle BOLD MRI with transcutaneous oxygen pressure for assessing microcirculation in patients with systemic sclerosis
Journal of Magnetic Resonance Imaging 38(4):845-51.  

P. Broz, M. Aschwanden, S. Partovi, A.-C. Schulte, D. Benz, M. Takes, U.A. Walker, D. Bilecen, K.A. Jaeger, S. Imfeld, D. Staub (2013):

Assessment of cutaneous microcirculation in unaffected skin regions by transcutaneous oxygen saturation monitoring and Laser Doppler flowmetry in systemic sclerosis
Clinical Hemorheology and Microcirculation 60(3):263-271  

D. Staub, S. Partovi, S. Imfeld, H. Uthoff, T. Baldi, M. Aschwanden, K.A. Jaeger (2013):

Novel applications of contrast-enhanced ultrasound imaging in vascular medicine
European Journal of Vascular Medicine 42:17-31  

Partovi S, Schulte AC, Aschwanden M, Staub D, Benz D, Imfeld S, Jacobi B, Broz P, Jaeger KA, Takes M, Huegli RW, Bilecen D, Walker UA. (2012):

Impaired skeletal muscle microcirculation in systemic sclerosis.
Arthritis Res Ther.4;14(5):R209

S. Partovi, S. Imfeld, M. Aschwanden, D. Bilecen, K.A. Jaeger, D. Staub (2012):

The Use of Contrast-enhanced Ultrasound (CEUS) in Chronic Periaortitis.
Ultraschall Med. 34(1): 3-6  

M. Aschwanden, T. Daikeler, F. Kesten, T. Baldi, D. Benz, A. Tyndall, S. Imfeld, D. Staub, C. Hess, K.A. Jaeger (2012):

Temporal Artery Compression Sign - A Novel Ultrasound Finding for the Diagnosis of Giant Cell Arteritis.
Ultraschall Med. 34(1):47-50  

H. Uthoff, M. Siegemund, M. Aschwanden, L. Hunziker, T. Fabbro, U. Baumann, K.A. Jaeger, S. Imfeld, D. Staub (2012):

Prospective Comparison of Noninvasive, Bedside Ultrasound Methods for Assessing Central Venous Pressure
Ultrasound in Medicine 33:1-7  

E. Singer, S. Imfeld, D. Staub, U. Hoffmann, I. Buschmann, K-H Labs, KA Jaeger, on behalf of the Arteriogenesis Competence Network Trialists' Group (2012):

Effect of Aspirin versus Clopidogrel on Walking Exercise Performance in Intermittent Claudication - a Double Blind, Randomized Multicenter Trial
J Am Heart Assoc 2012:1:51-56  

S. Imfeld, R. Haller (2010):

Pitfalls in Preserving Geoinformation - Lessons from the Swiss National Park
In: Lecture Notes in Geoinformation and Cartography. Preservation in Digital Cartography. Archiving Aspects. pp 147-159.

S.Imfeld, D.Staub, H.Uthoff, T.Baldi, M.Aschwanden, K.A.Jaeger (2009):

Ultrasonography to Guide Duration of Anticoagulation in DVT
Ann Intern Med. 2009 Dec 1;151(11):826 [Rapid response]

Christoph Thalhammer, Martin Siegemund, Markus Aschwanden, Mirjam Gassmann, Ulrich A. Baumann, Kurt A. Jaeger, Stephan Imfeld (2009):

Noninvasive Central Venous Pressure Measurement by Compression Ultrasound - A Step into Real Life
Resuscitation 80(10):1130-1136

Markus Aschwanden, Michael Mayr, Stephan Imfeld, Jürg Steiger, Kurt A. Jaeger, Christoph Thalhammer (2009):

Rapid adaptation of intrarenal resistance index after living donor kidney transplantation
Nephrology Dialysis Transplantation 24(4):1331-1334

St. Brendebach, E. Burri, St. Imfeld, A.L.Jacob, L. Zimmerli (2008):

Nicht kontrollierbare Blutdruckspitzen - Phäochromozytom?
Praxis (97): 1357-1361

E. Singer, S. Imfeld, U. Hoffmann, I. Buschmann, K.-H. Labs, K.A. Jaeger (2008):

Platelet Inhibition and Physical Training in Peripheral Arterial Disease: Does The Choice of Drug Matter? A Double-blind, Randomized Trial
Circulation Supplement 118(18):S905 (Abstract)

R.M. Haller, S.Imfeld (2007):

Assessment of height accuracy of DEM for species habitat analysis and modelling.
In: Proceedings ISSDQ 2007, 5pp.

C. Thalhammer, M. Aschwanden, A. Odermatt, U.A. Baumann, S. Imfeld, D. Bilecen, S.C. Marsch, K.A. Jaeger (2007):

Noninvasive Central Venous Pressure Measurement by Controlled Compression Sonography at the Forearm.
Journal of the American College of Cardiology 50(16):1584-1589.

A. Bondke, L. Singer, S. Imfeld, K.A. Jaeger, I.R. Buschmann (2007):

Update zur Therapie der pAVK mit Wachstumsfaktoren und Zytokinen.
Vasomed 2/2007B: 6-7.

D. Staub, R. Canevascini, R. Huegli, M. Aschwanden, C. Thalhammer, E. Singer, S. Imfeld, L. Jacob, K.A. Jaeger (2007):

Best duplex-sonographic criteria for the assessment of renal artery stenosis - correlation with intra-arterial pressure gradient.
Ultraschall in der Medizin 28(1):45-51.

Y. Jaccard, E. Singer, S. Degischer, S. Imfeld, M. Aschwanden,C. Thalhammer, K-H. Labs, K.A. Jäger (2007):

Effect of silver threads containing compression stockings on the cutaneous microcirculation: A double blind, randomized cross-over study.
Clinical Hemorheology and Microcirculation 36(1):65-74.

Patrick Laube, Ross S. Purves, Stephan Imfeld and Robert Weibel (2007):

Analysing Point Motion with Geographic Knowledge Discovery Techniques.
In: Dynamic and Mobile GIS: Investigating Changes in Space and Time. Innovations in GIS. Edited by Jane Drummond, Roland Billen, Elsa João and David Forrest, Taylor and Francis. 263-286.

E.W. Russi, S.Imfeld, A. Boehler, W.Weder (2006):

Surgical treatment of chronic obstructive pulmonary disease.
In: N.M. Siafakas (Ed.): Management of COPD.
European Respiratory Monograph 35, Chapter 22, pp 359-374. Maney, London.

R.Schmidt, S. Imfeld (2006):

GIS Naturlandschaft Sihlwald - Das Datenzentrum für Forschung, Naturschutz und Tourismus.
In: Proceedings GIS/SIT 2006,8 pp

E. Singer, S. Imfeld, U. Hoffmann, I. Buschmann, K.-H. Labs, K.A. Jaeger (2006):

Aspirin in peripheral arterial disease: breakthrough or pitfall?
VASA 35(3):174-7

S. Imfeld, E. Singer, S. Degischer, M. Aschwanden, C. Thalhammer, K-H. Labs, K.A. Jaeger (2006):

Quality of life improvement after hospital-based rehabilitation or home-based physical training in intermittent claudication.
VASA 35(3):178-184

S.Imfeld, R.Haller, P.Laube (2006):

Positional Accuracy of Biological Research Data: a Case Study.
In: M.Caetano, M. Painho (Eds.): Proceedings of Accuracy 2006, Instituto Geographico Protuguês, Lisboa, pp. 275-280.

M. Tutic, D. Lardinois, S. Imfeld, S. Korom, A. Boehler, R. Speich, K.E. Bloch, E.W. Russi, W. Weder (2006):

Lung-volume reduction surgery as an alternative or bridging procedure to lung transplantation.
Ann Thorac Surg. 82(1):208-13

S.Imfeld, K.E.Bloch, W.Weder, E.W.Russi (2006):

Impact of LVRS on Gas Exchange
Proceedings of the American Thoracic Society. A848. (abstract)

K.A. Jaeger, S. Imfeld (2006):

The Damaging Effect of Ultrasound - to the Examiner.
Ultraschall Med. 27(2):131-133.

S.Imfeld, K.E.Bloch, W.Weder, E.W.Russi (2006):

The BODE Index after Lung Volume Reduction Surgery Correlates with Survival.
Chest 129(4):873-8.

S.Imfeld, R.Haller (2006):

Konzept Meta-Meta-Datenbank (MMD)
Technischer Bericht. Geographisches Institut und Schweizerischer Nationalpark. 30 pp.

P.Laube, S.Imfeld, R.Weibel (2005):

Discovering relative motion patterns in groups of moving point objects
International Journal of Geographical Information Science 19(6):639-668.

S.Imfeld, K.E.Bloch, W.Weder, E.W.Russi (2005):

Long term Results after Bilateral Video-Assisted Thoracoscopic Lung Volume Reduction.
Proceedings of the American Thoracic Society Vol 2:A293.

S.Imfeld, K.E.Bloch, W.Weder, E.W.Russi (2005):

Prognostic Parameters for Long-Term Survival after Bilateral Lung Volume Reduction Surgery (LVRS).
Proceedings of the American Thoracic Society Vol 2:A648.

S.Imfeld, K.E.Bloch, W.Weder, E.W.Russi (2005):

Improvements of BODE index after LVRS - correlation with survival?
Swiss Med Wkly 135 (Suppl 145):S13.

S.Imfeld (2005):

Quality of life improvement after hospital-based rehabilitation or home-based physical training in intermittent claudication.
Dissertation. University of Basel.

S.Imfeld, R.Haller (2004):

Luftbildprojekt 2000 Schweizerischer Nationalpark. Luftbild-Orientierung und Orthophotoerstellung. Schlussbericht.
Technischer Bericht. Geographisches Institut und Schweizerischer Nationalpark. 649 pp.

P.Laube, M.van Kreveld and S.Imfeld (2004):

Finding REMO - Detecting Relative Motion Patterns in Geospatial Lifelines.
In: P.F. Fisher (Ed.): Developments in Spatial Data Handling, Proceedings of the 11th International Symposium on Spatial Data Handling, Leicester, UK, 23rd - 25th August 2004. Springer, Berlin-Heidelberg, p.201-214.

P.Laube and S.Imfeld (2002):

Analyzing Relative Motion within Groups of Trackable Moving Point Objects
Lecture Notes in Computer Science Vol. 2478.

R.Haller, F.Filli and S.Imfeld (2001):

Evaluation of GPS-Technology for Tracking Mountain Ungulates: VHR-Transmitters or GPS-Collars?
Proceedings 'Tracking Animals with GPS', March 2001, p. 61-66.

T.Good, K.Hindenlang, S.Imfeld, B.Nievergelt (2001):

A habitat analysis of badger (Meles meles L.) setts in a semi-natural forest.
International Journal of Mammalian Biology 66(4):204-214.

S.Imfeld (2001):

Rauminformation GIS/NLS: Zwischenbericht und weitere Planung.
Technical Report, Department of Geography, University of Zurich, 48p.

S.Imfeld (2000):

Time, Points and Space - Towards a Better Analysis of Wildlife Data in GIS.
PhD-Thesis, University of Zurich.

D.Hegglin, T.Good, G.Gajdon, G.Asmara, B.Gebremedhin, S.Imfeld, J.Lustenberger and J.Niederberger (1998):

Larger Mammals and Birds in the Lowlands and on the Plateau of the Park.
In: B.Nievergelt, T.Good, R.Güttinger (Ed.): A Survey on the Flora and Fauna of the Simen Mountains National Park, Ethiopia. Walia 1998.

S.Imfeld (1996):

Tages- und Jahreszeitliche Verteilungsmuster des Rehs C.capreolus im Sihlwald.
MSc-Thesis. University of Zurich.

S.Imfeld, L.Schifferli, P.Staub und A.Zimmermann (1986):

Beispiel: Zugersee.
Wildtiere 1/86:7.

S.Imfeld, L.Schifferli, P.Staub und A.Zimmermann (1986):

Der Kormoran - ein Wintergast aus dem Norden.
Zuger Neujahrsblatt: 77-86.


Poster Presentations

Singer L., Jaccard Y., Thalhammer C., Aschwanden M., Imfeld S., Labs K.-H., Jaeger K. A. (2007):

Interwoven silver fibers in class II compression stockings and their influence on the microcirculation of healthy volunteers and CVI-patients
Poster, 14. Dreilädertagung Angiologie 2007, München.

S.Imfeld, K.E.Bloch, W.Weder, E.W.Russi (2006):

Impact of LVRS on Gas Exchange
Poster Presentation, ATS 2006, San Diego, CA.

Stephan Imfeld, Konrad E. Bloch, Walter Weder, Erich W. Russi (2005)

Improvements of BODE After LVRS - Correlation with Survival?
Poster Presentation, ATS 2005, San Diego, CA

M.Tutic, S.Korom, S.Imfeld, A.Boehler, R.Speich, D.Lardinois, K.E. Bloch, E.Russi, W.Weder(2005)

Lung volume reduction surgery as bridging procedure to lung transplantation.
Poster, SGP 2005, Luzern, Switzerland.

Patrick Laube and Stephan Imfeld (2003)

REMO-Regex: Matching Motion Patterns in Groups of Moving Point Objects.
Poster Presentation, Conference on Spatial Information Theory (COSIT'03), September 2003, Kartause Ittingen, Switzerland.

Ruedi Haller, Flurin Filli and Stephan Imfeld (2001)

Establishing GPS-Technology in the Ungulate Research Project in the Swiss National Park - First Results
Poster at the 'Tracking Animals with GPS' Conference, Aberdeen, Scottland, March 2001.

Stephan Imfeld and Ruedi Haller (2001)

How accurate does telemetry need to be? On the influence of positional error on performance of habitat selection analysis.
Poster at the International Conference of Forest Dynamics and Ungulate Herbivory, Davos, 2001

2022 / Imfeld