101
|
Thörmer G, Garnov N, Moche M, Kahn T, Busse H. Dynamische Positionsbestimmung eines robotischen Manipulators für Interventionen in einem geschlossenen MRT: Methode und erste Ergebnisse. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
102
|
Gosch D, Nagel HD, Kahn T. Fehler bei der Verwendung von CT-Dosisautomatiken und ihre Auswirkungen auf Bildqualität und Strahlenexposition. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
103
|
Gosch D, Lehmkuhl L, Nagel HD, Gutberlet M, Kahn T. Phantommessungen zur Ermittlung der Strahlenexposition bei retrospektiv und prospektiv EKG-getriggerten CT-Untersuchungen des Herzens. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
104
|
Marwede D, Kahn T, Kluge R, Sabri O. RadLex 2.0: Motivation, Struktur und Einsatzmöglichkeiten einer standardisierten Terminologie (RadLex) für die Radiologie und Nuklearmedizin. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
105
|
Reiss-Zimmermann M, Hofer M, Kahn T, Schulz T. Navigierte HNO-Chirurgie – liefern wir nur die präoperativen Datensätze? ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
106
|
Moche M, Busse H, Zajonz D, Fuchs J, Petersen TO, Kahn T. Leberbiopsien mit einem robotischen Assistenzsystem im 1.5T MRT. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
107
|
Thörmer G, Moche M, Garnov N, Haase J, Kahn T, Busse H. Experimentelle Evaluierung eines Verfahrens zur kontinuierlichen 3D-Lokalisation intravaskulärer Katheter in einem Gefäßphantom. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
108
|
Thees S, Kendziorra K, Marwede D, Kirsten H, Fritsch D, Moche M, Sabri O, Kahn T. Towards a software based PET/MR: A new approach for highly accurate registration of PET and MRI scull base to inguinal imaging. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
109
|
Stumpp P, Reiss-Zimmermann M, Kluge G, Marwede D, Schulz T, Kahn T. Entwicklung eines strukturierten Curriculums für ein Blockpraktikum „Radiologie in einer Woche“. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
110
|
Busse H, Thörmer G, Garnov N, Moche M, Haase J, Kahn T. Absolute Genauigkeit und Geschwindigkeit einer morphologischen Bildanalyse zur 3D Verfolgung MR-sichtbarer Marker: Ergebnisse aus Experiment und Simulation. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
111
|
Garnov N, Thörmer G, Moche M, Haase J, Kahn T, Busse H. Verfahren zur Erkennung der 3D-Position und räumlichen Ausrichtung von MR sichtbaren Markern bei der interventionellen MR-Bildgebung. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
112
|
Stumpp P, Reiss-Zimmermann M, Kluge G, Marwede D, Fritzsch D, Schulz T, Kahn T. Führt aktives Lernen im Rahmen eines Blockpraktikums Radiologie zu besseren Prüfungsergebnissen und höherer Zufriedenheit der Studierenden? ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
113
|
Kaiser I, Kaiser T, Kahn T. MRCP und ERCP in der Diagnostik von Gallenwegserkrankungen. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
114
|
Winkler J, Hagert-Winkler A, Wirtz H, Schauer J, Kahn T, Hoheisel G. [Impulse oscillometry in the diagnosis of the severity of obstructive pulmonary disease]. Pneumologie 2009; 63:266-75. [PMID: 19322746 DOI: 10.1055/s-0028-1119698] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Impulse oscillometry (IOS) is a computer-supported method for the measurement of complex mechanical airway characteristics. The aim of this study was to evaluate the applicability of IOS in the diagnosis of obstructive airway diseases in comparison to the standard methods of spirometry, pneumotachymetry, and bodyplethysmography. 244 patients (age 61.5 +/- 13.6 years; 61 % men) with bronchial asthma (n = 65) and chronic obstructive pulmonary disease (COPD) (n = 179) were retrospectively analysed. By means of body plethysmography (Srtot < 120%pred) an obstruction was diagnosed in 94%, by pneumotachymetry (FEV1 < 80%pred) in 78 %, and by IOS depending on the parameter chosen in 87-94% of patients. Mild and medium obstructions could be identified by means of all IOS parameters except for R20: severe obstructions, however, were better detected by means of the frequency-dependent resistance FDR and reactance at 5 Hz, X5. The parameters R5, X5, and Zrs, however, showed a tendency to underestimate the degree of obstruction. Bronchial obstruction can reliably be diagnosed by IOS when, in cases of severe obstruction, more complex parameters like FDR and X5 are included. The parameters of the standard methods (body plethysmography and pneumotachymetry) show relatively low correlations due to the different measurement methods not only in comparison to IOS but also to one another. In summary, IOS is a convenient method for patients with a low dependency on cooperation for the evaluation of obstructive airway diseases complementary to the established standard methods and, in addition, is useful as a sensitive screening tool for the early detection of bronchial obstruction.
Collapse
|
115
|
Krohmer S, Sorge I, Krausse A, Kluge R, Bierbach U, Marwede D, Kahn T, Hirsch W. Whole-body MRI for primary evaluation of malignant disease in children. Eur J Radiol 2009; 74:256-61. [PMID: 19278802 DOI: 10.1016/j.ejrad.2009.01.037] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2008] [Revised: 01/15/2009] [Accepted: 01/30/2009] [Indexed: 11/15/2022]
Abstract
OBJECTIVE The aim of this study was to compare diagnostic accuracy of whole-body (WB) MRI to a combined reference standard of conventional cross-sectional imaging methods and FDG-PET in the detection of malignant disease spread in children. MATERIALS AND METHODS 24 children (age between 5 and 18 years) with malignant diseases (mainly Hodgkin's lymphoma and different types of sarcoma) initially examined with conventional cross-sectional imaging methods (ultrasound, computed tomography, or magnetic resonance imaging) were examined prospectively with whole-body MRI (1.5T) and FDG-PET. Studies were read by two nuclear medicine physicians (FDG-PET) and two radiologists (WB-MRI) independently in a blinded manner and each study type was evaluated in consensus. The reference standard was defined as pathological lesions detected in the same location both in FDG-PET and another conventional cross-sectional imaging method. RESULTS Overall 190 lesions were detected by WB-MRI and 155 lesion were found by FDG-PET. 106 lesions fulfilled the criteria of the reference standard (42 osseous and 64 extraosseous lesions) from which 102 were detected by WB-MRI (sensitivity of 96%). All bone lesions were detected and extra-skeletal lesions were identified with a sensitivity of 93.8%. Overall 88 lesions detected by WB-MRI were not part of the reference standard from which 33 were lesions of the peripheral skeleton not imaged by conventional cross-sectional imaging studies. 4 lesions of the reference standard were not identified by WB-MRI which were all lymph nodes. CONCLUSION WB-MRI is a radiation free imaging technique with high sensitivity for the detection of malignant disease spread in particular beneficial for children. In patients with suspected bone lesions it should be considered for initial disease evaluation prior to specific and regional imaging methods to reduce the overall number of imaging examinations and radiation exposure.
Collapse
|
116
|
Thörmer G, Moche M, Garnov N, Haase J, Kahn T, Busse H. Experimentelle Evaluierung eines Verfahrens zur kontinuierlichen 3D-Lokalisation intravaskulärer Katheter in einem Gefäßphantom. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1208338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
117
|
Schneider R, Leinung S, Klöppel R, Kahn T, Dieckmann T, Eichfeld U. Die präoperative Dünnschicht-Computertomografie im Management der Lungenmetastasenchirurgie. Zentralbl Chir 2008; 133:568-73. [DOI: 10.1055/s-2008-1076] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
118
|
Marwede D, Daumke P, Marko K, Lobsien D, Schulz S, Kahn T. [RadLex - German version: a radiological lexicon for indexing image and report information]. ROFO-FORTSCHR RONTG 2008; 181:38-44. [PMID: 19085688 DOI: 10.1055/s-2008-1027895] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
PURPOSE Since 2003 the Radiological Society of North America (RSNA) has been developing a lexicon of standardized radiological terms (RadLex) intended to support the structured reporting of imaging observations and the indexing of teaching cases. The aim of this study was to translate the first version of the lexicon (1 - 2007) into German and to implement a language-independent online term browser. MATERIALS AND METHODS RadLex version 1 - 2007 contains 6303 terms in nine main categories. Two radiologists independently translated the lexicon using medical dictionaries. Terms translated differently were revised and translated by consensus. For the development of an online term browser, a text processing algorithm called morphosemantic indexing was used which splits up words into small semantic units and compares those units to language-specific subword thesauri. RESULTS In total 6240 of 6303 terms (99 %) were translated. Of those terms 3965 were German, 1893 were Latin, 359 were multilingual, and 23 were English terms that are also used in German and were therefore maintained. The online term browser supports a language-independent term search in RadLex (German/English) and other common medical terminology (e. g., ICD 10). The term browser displays term hierarchies and translations in different frames and the complexity of the result lists can be adapted by the user. CONCLUSION RadLex version 1 - 2007 developed by the RSNA is now available in German and can be accessed online through a term browser with an efficient search function. This is an important precondition for the future comparison of national and international indexed radiological examination results and the interoperability between digital teaching resources.
Collapse
|
119
|
Jurisch D, Szokodi D, Pfeiffer D, Kahn T, Engelmann L. [A 49-year-old woman with deep vein thrombosis, pulmonary embolism, and left-sided paralysis]. Internist (Berl) 2008; 49:1251-2, 1254-6, 1258. [PMID: 18719872 DOI: 10.1007/s00108-008-2139-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the case of a 49-year-old female patient who was admitted stationary because of a left-sided paralysis which had appeared some hours before. An embolic occlusion of the right A. cerebri media turned out to be the cause. A paradoxical embolism could be assumed because of an existing deep vein thrombosis and an increased right-ventricular pressure within a hemodynamically relevant fulminant pulmonary embolism as well as the additional existence of a patent foramen ovale (PFO). Systemic lysis as treatment of the pulmonary embolism was contraindicated because slight bleeding had occurred in the area of the right basal ganglia after treatment of the embolic occlusion of the right A. cerebri media by a local lysis. Subsequently and in the acuteness, a catheter interventional PFO-closure via a double-umbrella device was placed and the pulmonary embolism was effectively treated by a local lysis through the insertion of a pigtail-catheter into the right pulmonary artery.
Collapse
|
120
|
|
121
|
Marelli D, Kobashigawa J, Moriguchi J, Shuvayev I, Wong S, Kahn T, Patel J, Beygui R, Esmailian F, Laks H, Plunkett M, Ardehali A. 267: ECMO To Salvage Severe Cardiogenic Shock in Advanced Heart Failure and Transplantation. J Heart Lung Transplant 2008. [DOI: 10.1016/j.healun.2007.11.276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
|
122
|
Fritzsch D, Gosch D, Borte G, Schulz T, Kahn T. Evaluation eines neuen Speicherfoliensystems auf Nadelstrukturbasis in Hinblick auf die Reduzierung der Strahlenexposition bei Thoraxaufnahmen. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1073926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
123
|
Busse H, Schwarzkopf P, Seiwerts M, Borges JB, Costa EL, Kahn T, Amato MB, Reske AW. Einfluss der CT-Bildrekonstruktion auf die quantitative Messung der alveolären Belüftung: Intraindividueller Vergleich bei Tieren mit normaler und experimentell geschädigter Lunge. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1073965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
124
|
Reiss-Zimmermann M, Schulz T, Riese F, Kahn T. Aneurysmata der Aorta: Primär- und postinterventionelle Diagnostik. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1074041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
125
|
Friedrich F, Kahn T. Die Nephrogene Systemische Fibrose – ein aktueller Überblick. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1074055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|