C. Schaefer

München Klinik

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Mathias Prokop

Radboud University Nijmegen

J W Oestmann

Charité - Universitätsmedizin Berlin

M. Galanski

Zentrum Überleben

J R Rubens

Massachusetts General Hospital

Henry Llewellyn

University College London

Reginald E. Greene

Society of Interventional Radiology

David A. Hall

University of Manchester

Robin Greene

University of Kentucky

Stephan Reichelt

University of Stuttgart

Kathleen A. McCarthy

Mercy Health

Cooperative Institutions

Ludwig-Maximilians-Universität München

Heidelberg University

Medizinische Hochschule Hannover

University of Giessen

LMU Klinikum

München Klinik

Harvard University

Massachusetts General Hospital

German Cancer Research Center

Goethe University Frankfurt

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COMPARATIVE PERFORMANCE OF DUAL ENERGY DIGITAL IMAGING FOR ASBESTOS-RELATED DISEASE

Investigative Radiology (1989)

C. Schaefer J W Oestmann Reginald E. Greene Cremades Oliver David A. Hall

Schaefer, C M MD; Oestmann, J W MD; Greene, R MD; Oliver, C MD; Hall, D MD; Llewellyn, H J MD; Rubens, J R MD; Pile-Spellman, E MD; McCarthy, K MD; Lindemann, S MD

10.1097/00004424-198912000-00165

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Artefacts in Digital Storage Phosphor Radiography

Springer eBooks (1991)

J W Oestmann Mathias Prokop C. Schaefer M. Galanski

Unsharp masking

Digital radiography

Digital storage

10.1007/978-3-662-00807-2_19

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Hardware and software artifacts in storage phosphor radiography.

Radiographics (1991)

J W Oestmann Mathias Prokop C. Schaefer M. Galanski

Hardware and software artifacts in digital radiographs acquired with storage phosphor systems can seriously impair image quality and imitate or mask abnormalities. These artifacts are caused by image plate, image reader, and laser printer defects; faulty image readout; processing errors; and unsharp masking. The artifacts can simulate calcifications and pneumothoraces or conceal low-contrast ill-defined lesions and subtle lesions along opacity interfaces. Hardware artifacts need to be recognized and properly traced to repair the system or improve its maintenance. Artifacts due to software characteristics and image post-processing must also be identified to ensure adequate system handling and adjustment of postprocessing algorithms.

Unsharp masking

10.1148/radiographics.11.5.1947316

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Citations (40)

Digital Storage Phosphor Radiography in Gastrointestinal Disease

Springer eBooks (1991)

C. Schaefer Reginald E. Greene Deborah C. Hall Mathias Prokop Peter Reimer

Digital radiography

Grey scale

Radiodensity

10.1007/978-3-662-00807-2_23

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Citations (1)

AIO-Mitteilungen

Oncology Research and Treatment (1989)

W. Vötsch Martin Schröder U. Göbel M. Pfreundschuh B. Genth

10.1159/000216625

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Storage-phosphor digital radiography in genitourinary radiology

World Journal of Urology (1990)

C. Schaefer Mathias Prokop M. Truß J W Oestmann Stephan Reichelt

Digital radiography

Computed radiography

10.1007/bf01576760

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Einfluss der Ga-68 PSMA-PET/CT auf das strahlentherapeutische Vorgehen bei Patienten mit Prostatakarzinomen

Nuklearmedizin - NuclearMedicine (2019)

N-S. Schmidt-Hegemann Chukwuka Eze M Li Paul Rogowski C. Schaefer

Die PSMA PET/CT hat eine hohe diagnostische Wertigkeit sowohl bei Patienten mit persistierenden oder rezidivierenden Prostatakarzinomen als auch zum Primarstaging vor definitiver Therapie. Ziel der Arbeit ist es den Einfluss der PSMA PET/CT auf das strahlentherapeutische Vorgehen zu evaluieren.

10.1055/s-0039-1683572

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Resezierbarkeit maligner Lebertumoren — Bedeutung der präoperativen Bildgebung

Springer eBooks (1993)

C. Schaefer Mathias Prokop Peter Reimer R. Pichlmayr

10.1007/978-3-642-77834-6_10

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Citations (1)

Mediastinal abnormalities: detection with storage phosphor digital radiography.

Radiology (1991)

C. Schaefer Robin Greene David A. Hall S. Lindemann Henry Llewellyn

Conventional film radiography (FR) and six postprocessing algorithms of isodose storage phosphor digital radiography (SR) (0.2-mm X 10-bit pixel matrix) were compared in the evaluation of 40 mediastinal and 30 pulmonary lesions in 60 patients who underwent computed tomography of the chest. The six SR algorithms varied among each other in only one image parameter. One algorithm approximated conventional image characteristics. The other five algorithms were designed to optimize imaging of the mediastinum and tested the effects of gray-scale reversal, adjustment of optical density, a linear instead of a sigmoid gradation curve, and moderate edge enhancement of high and medium spatial frequencies. Performance was evaluated by calculating the average area under the receiver operating characteristic curve (Az) of 5,040 observations by six readers. Post-processing with high-frequency edge enhancement and density optimization for the mediastinum significantly improved performance of SR over FR in the detection of mediastinal lesions (Az = .80 +/- .02 vs .73 +/- .01, respectively). Gray-scale reversal significantly decreased performance (Az = .64 +/- .03). All SR algorithms that were postprocessed to optimize imaging of the mediastinum were significantly inferior to FR in the detection of pulmonary lesions.

Computed radiography

Digital radiography

10.1148/radiology.178.1.1984298

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Citations (30)

A23-1 Internal low energy cardioversion versus external transthoracic cardioversion with ibutilide iinfusion: A prospective, randomized comparison

EP Europace (2003)

Ali Erdoğan Ulrich Backenköhler Thomas Neumann D. Romann Benedikt Münz

Results:Mean FFRWO at implant (mV) Mean FFRWO at Follow-up (mV) FFRWWP wave (implant) FFRWWP wave (follow-up)Pts with FFRWWP > 50% (implant) Pts with FFRWWP > 5OW (follow-up) Mean atria1 pacing threshold at 1 Volt (ms) Mean atria1 impedance (Ohm) .P < 0.05 "S Group c.

Ibutilide

10.1016/eupace/4.supplement_2.b34-a

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