A G Schreyer

Summary

Affiliation: University of Regensburg
Country: Germany

Publications

  1. ncbi Modern imaging using computer tomography and magnetic resonance imaging for inflammatory bowel disease (IBD) AU1
    Andreas G Schreyer
    Department of Radiology, University of Regensburg
    Inflamm Bowel Dis 10:45-54. 2004
  2. ncbi Radiological imaging of the small bowel
    A G Schreyer
    Department of Radiology, University Medical Center Regensburg, Regensburg, Germany
    Dig Dis 29:22-6. 2011
  3. ncbi Contrast-enhanced ultrasound for differential diagnosis of suspected GvHD in patients after allogeneic transplantation
    Andreas G Schreyer
    Institute of Radiology, University Medical Center Regensburg, Regensburg, Germany
    Clin Hemorheol Microcirc 49:129-36. 2011
  4. ncbi Magnetic resonance imaging-based virtual endoscopy of inner ear pathology
    Andreas G Schreyer
    Department of Radiology and Department of Otorhinolaryngology, University Hospital Regensburg, Regensburg, Germany
    Otol Neurotol 23:136-40. 2002
  5. ncbi [Indications for magnetic resonance imaging in Internal Medicine. When do we really need this technology?]
    A G Schreyer
    Institut für Röntgendiagnostik, Universitatsklinikum Regensburg, 93042 Regensburg
    Internist (Berl) 51:451-62. 2010
  6. ncbi Transmural penetration of intravenously applied microbubbles during contrast-enhanced ultrasound as a new diagnostic feature in patients with GVHD of the bowel
    A G Schreyer
    Institute of Radiology, University Medical Center Regensburg, Regensburg, Germany
    Bone Marrow Transplant 46:1006-11. 2011
  7. ncbi Comparison of conventional abdominal CT with MR-enterography in patients with active Crohn's disease and acute abdominal pain
    Andreas G Schreyer
    Department of Radiology, University Medical Center Regensburg, 93042 Regensburg, Germany
    Acad Radiol 17:352-7. 2010
  8. ncbi Comparison of high-resolution ultrasound and MR-enterography in patients with inflammatory bowel disease
    Andreas G Schreyer
    Institute of Radiology, University Medical Center, Regensburg, Germany
    World J Gastroenterol 17:1018-25. 2011
  9. ncbi Comparison of magnetic resonance imaging colonography with conventional colonoscopy for the assessment of intestinal inflammation in patients with inflammatory bowel disease: a feasibility study
    A G Schreyer
    Department of Radiology, University Hospital, Regensburg, 93042 Regensburg, Germany
    Gut 54:250-6. 2005
  10. ncbi Microcirculation and perfusion with contrast enhanced ultrasound (CEUS) in Crohn's disease: first results with linear contrast harmonic imaging (CHI)
    A G Schreyer
    Department of Radiology, University Hospital Regensburg, Regensburg, Germany
    Clin Hemorheol Microcirc 40:143-55. 2008

Detail Information

Publications48

  1. ncbi Modern imaging using computer tomography and magnetic resonance imaging for inflammatory bowel disease (IBD) AU1
    Andreas G Schreyer
    Department of Radiology, University of Regensburg
    Inflamm Bowel Dis 10:45-54. 2004
    ..Future developments of CT- or MR-based virtual colonography and endoscopy in patients with inflammatory bowel disease are currently being investigated, but should momentarily be considered as purely experimental approaches...
  2. ncbi Radiological imaging of the small bowel
    A G Schreyer
    Department of Radiology, University Medical Center Regensburg, Regensburg, Germany
    Dig Dis 29:22-6. 2011
    ..Additionally the most important diseases, which can affect the small bowel, are evaluated and the optimal imaging modalities are pointed out, respectively...
  3. ncbi Contrast-enhanced ultrasound for differential diagnosis of suspected GvHD in patients after allogeneic transplantation
    Andreas G Schreyer
    Institute of Radiology, University Medical Center Regensburg, Regensburg, Germany
    Clin Hemorheol Microcirc 49:129-36. 2011
    ..For microbubble penetration as a criterion for GvHD of the GI-Tract, this leads to a negative predictive value (NPV) of 67%, and a positive predicative value (PPV) of 100%...
  4. ncbi Magnetic resonance imaging-based virtual endoscopy of inner ear pathology
    Andreas G Schreyer
    Department of Radiology and Department of Otorhinolaryngology, University Hospital Regensburg, Regensburg, Germany
    Otol Neurotol 23:136-40. 2002
    ..To study the feasibility of high-resolution magnetic resonance imaging (MRI)-based virtual endoscopy of the labyrinth to assess subtle inner ear pathology...
  5. ncbi [Indications for magnetic resonance imaging in Internal Medicine. When do we really need this technology?]
    A G Schreyer
    Institut für Röntgendiagnostik, Universitatsklinikum Regensburg, 93042 Regensburg
    Internist (Berl) 51:451-62. 2010
    ..This review describes relevant indications for MRI in the different subspecialties of Internal Medicine and compares the diagnostic yield of MRI to other established modalities such as computed tomography and ultrasound...
  6. ncbi Transmural penetration of intravenously applied microbubbles during contrast-enhanced ultrasound as a new diagnostic feature in patients with GVHD of the bowel
    A G Schreyer
    Institute of Radiology, University Medical Center Regensburg, Regensburg, Germany
    Bone Marrow Transplant 46:1006-11. 2011
    ..The penetration of microbubbles into the bowel lumen may serve as a novel diagnostic feature for GVHD if confirmed in controlled clinical trials...
  7. ncbi Comparison of conventional abdominal CT with MR-enterography in patients with active Crohn's disease and acute abdominal pain
    Andreas G Schreyer
    Department of Radiology, University Medical Center Regensburg, 93042 Regensburg, Germany
    Acad Radiol 17:352-7. 2010
    ..In a retrospective study, we compared the diagnostic value of a conventional abdominal CT with a dedicated small bowel MRE to assess bowel wall changes as well as typical complications in patients with advanced CD...
  8. ncbi Comparison of high-resolution ultrasound and MR-enterography in patients with inflammatory bowel disease
    Andreas G Schreyer
    Institute of Radiology, University Medical Center, Regensburg, Germany
    World J Gastroenterol 17:1018-25. 2011
    ..To compare the results of high-resolution ultrasound (HR-US) and magnetic resonance enterography (MRE) examinations in patients with inflammatory bowel disease (IBD)...
  9. ncbi Comparison of magnetic resonance imaging colonography with conventional colonoscopy for the assessment of intestinal inflammation in patients with inflammatory bowel disease: a feasibility study
    A G Schreyer
    Department of Radiology, University Hospital, Regensburg, 93042 Regensburg, Germany
    Gut 54:250-6. 2005
    ..To evaluate this approach for patients with inflammatory bowel disease (IBD), we compared MRI based colonography with conventional colonoscopy for assessing the presence and extent of colonic inflammation...
  10. ncbi Microcirculation and perfusion with contrast enhanced ultrasound (CEUS) in Crohn's disease: first results with linear contrast harmonic imaging (CHI)
    A G Schreyer
    Department of Radiology, University Hospital Regensburg, Regensburg, Germany
    Clin Hemorheol Microcirc 40:143-55. 2008
    ....
  11. ncbi Magnetic resonance imaging based colonography for diagnosis and assessment of diverticulosis and diverticulitis
    Andreas G Schreyer
    Department of Radiology, University Hospital Regensburg, Regensburg, Germany
    Int J Colorectal Dis 19:474-80. 2004
    ..This study evaluated the feasibility of MRI-based colonography to assess diverticulosis or diverticulitis...
  12. ncbi 3D modeling and virtual endoscopy of the small bowel based on magnetic resonance imaging in patients with inflammatory bowel disease
    Andreas G Schreyer
    Department of Radiology, University Hospital Regensburg, Germany
    Invest Radiol 37:528-33. 2002
    ..The aim of this study was to evaluate the feasibility of virtual small bowel endoscopy based on MR imaging in patients with Crohn disease...
  13. ncbi Contrast-enhanced ultrasound improves real-time imaging of ablation region during radiofrequency ablation: preliminary results
    P Wiggermann
    Department of Radiology, University Hospital Regensburg, Regensburg, Germany
    Clin Hemorheol Microcirc 49:43-54. 2011
    ..This procedure was repeated until a CA was achieved. The number of ablations per patient was recorded. Secondary efficacy parameters assessed were lesion detectability in the different imaging modalities and contrast phases...
  14. ncbi Image fusion of contrast enhanced ultrasound (CEUS) with computed tomography (CT) or magnetic resonance imaging (MRI) using volume navigation for detection, characterization and planning of therapeutic interventions of liver tumors
    J Rennert
    Department of Radiology, University Medical Center Regensburg, Regensburg, Germany
    Clin Hemorheol Microcirc 49:67-81. 2011
    ....
  15. ncbi Endovascular treatment of acute arterial hemorrhage in trauma patients using ethylene vinyl alcohol copolymer (Onyx)
    R Müller-Wille
    Department of Radiology, University Medical Center Regensburg, Franz Josef Strauß Alle 11, 93053 Regensburg, Germany
    Cardiovasc Intervent Radiol 35:65-75. 2012
    ..This study was designed to determine the feasibility and efficacy of endovascular embolization with liquid embolic agent ethylene vinyl alcohol copolymer (Onyx) in patients with acute traumatic arterial bleeding...
  16. ncbi New real-time image fusion technique for characterization of tumor vascularisation and tumor perfusion of liver tumors with contrast-enhanced ultrasound, spiral CT or MRI: first results
    E M Jung
    Institute of Radiology, University Medical Center Regensburg, Regensburg, Germany
    Clin Hemorheol Microcirc 43:57-69. 2009
    ....
  17. ncbi Evaluation of quantitative contrast harmonic imaging to assess malignancy of liver tumors: a prospective controlled two-center study
    E M Jung
    Department of Radiology, University of Regensburg, Franz Josef Strauss Allee 11, Regensburg 93053, Germany
    World J Gastroenterol 13:6356-64. 2007
    ..To establish the extent to which contrast enhancement with SonoVue in combination with quantitative evaluation of contrast-medium dynamics facilitates the detection of hepatic tumors...
  18. ncbi [As Time Goes By - Is it Worth Intensifying Patient Care During the Waiting Period for Radiological Examinations?]
    P Hoffstetter
    Institut für Röntgendiagnostik, Universitatsklinikum Regensburg
    Rofo 184:1043-8. 2012
    ..The subjective judgement of examination quality seems to influence the acceptance of prolonged latency to a high degree...
  19. ncbi New perfusion imaging of tissue transplants with Contrast Harmonic Ultrasound Imaging (CHI) and Magnetic Resonance Imaging (MRI) in comparison with laser-induced Indocyanine Green (ICG) fluorescence angiography
    E M Jung
    Institute of Radiology, University Medical Center Regensburg, Regensburg, Germany
    Clin Hemorheol Microcirc 43:19-33. 2009
    ..Evaluation of post-surgery tissue perfusion of free flaps of the lower leg with contrast enhanced harmonic imaging (CHI), laser-induced indocyanine green (ICG) fluorescence angiography and magnetic resonance imaging (MRI)...
  20. ncbi [Cost analysis of contrast-enhanced cranial MRI at a German university hospital]
    A G Schreyer
    Institut für Röntgendiagnostik, Universitatsklinikum Regensburg, Franz Josef Strauss Allee 11, Regensburg
    Rofo 182:891-9. 2010
    ..Detailed evaluation and cost analysis of a cranial contrast-enhanced MRI (c-ceMRI) in outpatients, inpatients, patients in an intensive care unit and children under anesthesia...
  21. ncbi Quantitative assessment of bowel wall vascularisation in Crohn's disease with contrast-enhanced ultrasound and perfusion analysis
    C Girlich
    Department of Internal Medicine I, University of Regensburg, Regensburg, Germany
    Clin Hemorheol Microcirc 43:141-8. 2009
    ..The software used here enables us to collect data, not only in a semi-quantitative but also in a reproducible, quantitative manner which is comparable with the evaluation of CT or MRI generated data...
  22. ncbi [Clinical significance of conventional follow-through examinations of the gastrointestinal passage in a university hospital]
    L Egger
    Institut für Röntgendiagnostik, Universitatsklinikum Regensburg, Regensburg
    Rofo 184:893-8. 2012
    ..In this context the study tries to answer the question of the current significance of FTE of the gastrointestinal tract...
  23. ncbi Characterization of microvascularization of liver tumor lesions with high resolution linear ultrasound and contrast enhanced ultrasound (CEUS) during surgery: First results
    E M Jung
    Department of Radiology, University Medical Center Regensburg, Regensburg, Germany
    Clin Hemorheol Microcirc 46:89-99. 2010
    ..Evaluation of high resolution linear ultrasound and intra-operative linear contrast enhanced ultrasound (CEUS) and its benefit for the detection and characterization of tumor lesions...
  24. ncbi Degradable starch microspheres transarterial chemoembolisation (DSM-TACE) of HCC: Dynamic Contrast-Enhanced Ultrasonography (DCE-US) based evaluation of therapeutic efficacy using a novel perfusion software
    P Wiggermann
    Department of Radiology, University Medical Center Regensburg, Regensburg, Germany
    Clin Hemorheol Microcirc 52:123-9. 2012
    ..97 prior-, 38.14 ± 18.80 post embolization (p = 0.034) and 6.97 ± 2.68 during follow up (p ≤ 0.01). Conclusion: In this study, therapeutic efficacy of DSM-TACE in HCC using DCE-US based perfusion analysis could be demonstrated...
  25. ncbi [Non-trauma-associated additional findings in whole-body CT examinations in patients with multiple trauma]
    P Hoffstetter
    Institut für Röntgendiagnostik, Universitatsklinikum Regensburg, Franz Josef Strauss Allee 11, Regensburg
    Rofo 180:120-6. 2008
    ..Non-trauma-associated additional findings are commonly depicted based on these CT examinations. The aim of this study is to evaluate the number and quality of these additional findings in consecutive patients with multiple trauma...
  26. ncbi MR colonography in inflammatory bowel disease
    A G Schreyer
    Department of Radiology, University Hospital Regensburg, 93042 Regensburg, Germany
    Abdom Imaging 31:302-7. 2006
    ..In addition, recently published studies concerning the sensitivity and accuracy in detecting inflammatory bowel changes in inflammatory bowel disease using MRI are discussed...
  27. ncbi [Plain abdominal radiograph - is there any additional clinical value based on the supine projection?]
    P Hoffstetter
    Institut für Röntgendiagnostik, Universitatsklinikum Regensburg, Bad Abbach
    Dtsch Med Wochenschr 136:2589-93. 2011
    ..To assess the diagnostic value of an additionally acquired plain abdominal radiograph in supine position...
  28. ncbi [Evaluation of a liquid embolization agent (Onyx) for transcatheter embolization for renal vascular lesions]
    J Rennert
    Institut für Röntgendiagnostik, Klinikum der Universitat Regensburg, Regensburg
    Rofo 181:996-1001. 2009
    ..To evaluate the therapeutic outcome after endovascular treatment of renal vascular lesions using the liquid embolization agent, Onyx...
  29. ncbi [Updated German S3-guideline regarding the diagnosis of Crohn's disease--implementation of radiological modalities]
    A G Schreyer
    Institut für Röntgendiagnostik, Universitatsklinikum Regensburg
    Rofo 182:116-21. 2010
    ..The new guideline is also compared to former European and German guidelines in the context of recently published radiological literature...
  30. ncbi [Detection of intraorbital foreign material using MDCT]
    P Hoffstetter
    Institut für Röntgendiagnostik, Universitatsklinikum Regensburg
    Rofo 183:543-8. 2011
    ..To judge the possibilities of detection of orbital foreign bodies in multidetector CT (MDCT) with a focus on glass slivers...
  31. ncbi Mixed capillary/lymphatic malformation with coexisting port-wine stain: treatment utilizing 3D MRI and CT-guided sclerotherapy
    M B Wimmershoff
    Department of Dermatology, University of Regensburg, Regensburg, Germany
    Dermatol Surg 26:584-7. 2000
    ..Communicating via dermal lymphatic channels with superficial pseudovesicles, they can vary in size depending on the pressure transmitted by the cisterns beneath...
  32. ncbi First results of endocavity evaluation of the microvascularization of malignant prostate tumors using contrast enhanced ultrasound (CEUS) including perfusion analysis: First results
    E M Jung
    Institute of Diagnostic Radiology, University Hospital Regensburg, Regensburg, Germany
    Clin Hemorheol Microcirc 52:167-77. 2012
    ....
  33. ncbi A new method to quantify the effect after subcutaneous injection of lipolytic substances
    S M Klein
    Department of Plastic Surgery, University of Regensburg, Franz Josef Strauss Allee 11, 93053, Regensburg, Germany
    Aesthetic Plast Surg 32:667-72; discussion 673-4. 2008
    ..As with every other medical procedure, it is necessary to ensure that the results of lipolytic injections are quantified on an objective and scientific basis with comparable data...
  34. ncbi Innovations in contrast enhanced high resolution ultrasound improve sonographic imaging of the intestine
    C Girlich
    Department of Internal Medicine I, University of Regensburg, Germany
    Clin Hemorheol Microcirc 45:207-15. 2010
    ....
  35. ncbi [Steatohepatitis--a challenge?]
    L M Dendl
    Institut für Röntgendiagnostik, Universitatsklinikum Regensburg, Franz Josef Strauss Allee 11, Regensburg, Germany
    Radiologe 52:745-52. 2012
    ....
  36. ncbi [Biliodigestive anastomosis: indications, complications and interdisciplinary management]
    H Goessmann
    Institut für Röntgendiagnostik, Universitatsklinikum Regensburg, Regensburg, Deutschland
    Chirurg 83:1097-108. 2012
    ..The therapy may be protracted and requires repeated critical reflection of the particular complication...
  37. ncbi Laser surgical planning with magnetic resonance imaging-based 3-dimensional reconstructions for intralesional Nd:YAG laser therapy of a venous malformation of the neck
    A Glaessl
    Department of Dermatology, University of Regensburg, Franz Josef Strauss Allee 11, 93042 Regensburg, Germany
    Arch Dermatol 137:1331-5. 2001
    ..The therapeutic problem is to localize the venous malformation exactly before treatment on sectional 2-dimensional images...
  38. ncbi [Multidetector computed tomography in abdominal emergencies]
    N Zorger
    Institut für Röntgendiagnostik, Universitatsklinikum Regensburg, 93042, Regensburg
    Radiologe 49:523-32. 2009
    ..Additionally, MDCT imaging of the individual organ regions will be dealt with in detail...
  39. ncbi Combined PET/CT colonography: is this the way forward?
    A G Schreyer
    Department of Radiology, University Hospital Regensburg, Franz Josef Strauss Allee 11, 93053 Regensburg, Germany
    Gut 55:10-2. 2006
  40. ncbi The virtuosity of virtuality or how real is virtual colonography
    H Herfarth
    Department of Internal Medicine I, University of Regensburg, Regensburg, Germany
    Gut 52:1662-4. 2003
  41. ncbi Early treatment with pentoxifylline reduces lung injury induced by acid aspiration in rats
    Michael T Pawlik
    Department of Anesthesiology, University of Regensburg, Franz Josef Strauss Allee 6, D 93042 Regensburg, Germany
    Chest 127:613-21. 2005
    ..To evaluate the effect of pentoxifylline treatment on gas exchange and mortality immediately after bilateral instillation of hydrochloric acid...
  42. ncbi Concurrent carotid rupture and coronary dissection after blunt chest trauma
    Michael T Pawlik
    Departments of Anesthesiology, University Hospital Regensburg, Germany
    J Trauma 63:E69-72. 2007
  43. ncbi Abdominal MRI after enteroclysis or with oral contrast in patients with suspected or proven Crohn's disease
    Andreas G Schreyer
    Department of Radiology, University of Regensburg, Germany
    Clin Gastroenterol Hepatol 2:491-7. 2004
    ..CONCLUSIONS: Abdominal MRI with oral contrast only can be used as a diagnostic tool for evaluation of the small bowel in patients with Crohn's disease and has the potential to replace conventional enteroclysis as follow-up...
  44. ncbi Magnetic resonance imaging gastrography: evaluation of the dark lumen technique compared with conventional gastroscopy in patients with malignant gastric disease
    Karl Scheibl
    Department of Radiology, University Hospital Regensburg, Germany
    Invest Radiol 40:164-72. 2005
    ..The findings were correlated with conventional gastroscopy. In addition, we evaluated the screening for lymph nodes and liver metastases during the same session to identify potential tumor spread...
  45. ncbi Dark lumen magnetic resonance enteroclysis in combination with MRI colonography for whole bowel assessment in patients with Crohn's disease: first clinical experience
    Andreas G Schreyer
    Department of Radiology, University Hospital Regensburg, Regensburg, Germany
    Inflamm Bowel Dis 11:388-94. 2005
    ..In this feasibility study, we evaluated the combination of small bowel MRI with unprepared MRC as an integrative diagnostic approach of the whole bowel in patients with Crohn's disease...
  46. ncbi New diagnostic avenues in inflammatory bowel diseases. Capsule endoscopy, magnetic resonance imaging and virtual enteroscopy
    Andreas G Schreyer
    Department of Radiology, University of Regensburg, Regensburg, Germany
    Dig Dis 21:129-37. 2003
    ..This article describes these recently introduced methods in the diagnostic assessment of the small bowel and discusses the clinical significance based on the current literature...
  47. ncbi Magnetic resonance imaging, computed tomography, and conventional X-ray in 3 cases of symmelia
    Ulrich Dorenbeck
    Department of Diagnostic Radiology University Hospital of Regensburg, Regensburg, Germany
    Birth Defects Res A Clin Mol Teratol 73:628-33. 2005
    ..Symmelia is a rare birth defect, often combined with severe malformations of the urogenital system and the lower gastrointestinal tract. Additionally, a deformed pelvis and various degrees of separation of the lower limbs are present...
  48. ncbi Comparison of capsule endoscopy and magnetic resonance (MR) enteroclysis in suspected small bowel disease
    Stefan K Gölder
    Department of Internal Medicine I, University of Regensburg, 93042, Regensburg, Germany
    Int J Colorectal Dis 21:97-104. 2006
    ..The aim of this study was to compare the diagnostic yield of WCE with MR enteroclysis in the detection of small bowel pathologies...