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Ohlendorf D, Avaniadi I, Adjami F, Christian W, Doerry C, Fay V, Fisch V, Gerez A, Goecke J, Kaya U, Keller J, Krüger D, Pflaum J, Porsch L, Loewe C, Scharnweber B, Sosnov P, Wanke EM, Oremek G, Ackermann H, Holzgreve F, Keil F, Groneberg DA, Maurer-Grubinger C. Standard values of the upper body posture in healthy adults with special regard to age, sex and BMI. Sci Rep 2023; 13:873. [PMID: 36650216 PMCID: PMC9845304 DOI: 10.1038/s41598-023-27976-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 01/11/2023] [Indexed: 01/19/2023] Open
Abstract
In order to classify and analyze the parameters of upper body posture in clinical or physiotherapeutic settings, a baseline in the form of standard values with special regard to age, sex and BMI is required. Thus, subjectively healthy men and women aged 21-60 years were measured in this project. The postural parameters of 800 symptom-free male (n = 397) and female (n = 407) volunteers aged 21-60 years (Ø♀: 39.7 ± 11.6, Ø ♂: 40.7 ± 11.5 y) were studied. The mean height of the men was 1.8 ± 0.07 m, with a mean body weight of 84.8 ± 13.1 kg and an average BMI of 26.0 ± 3.534 kg/m2. In contrast, the mean height of the women was 1.67 ± 0.06 m, with a mean body weight of 66.5 ± 12.7 kg and an average BMI of 23.9 ± 4.6 kg/m2. By means of video rasterstereography, a 3-dimensional scan of the upper back surface was measured when in a habitual standing position. The means or medians, confidence intervals, tolerance ranges, the minimum, 2.5, 25, 50, 75, 97.5 percentiles and the maximum, plus the kurtosis and skewness of the distribution, were calculated for all parameters. Additionally, ANOVA and a factor analyses (sex, BMI, age) were conducted. In both sexes across all age groups, balanced, symmetrical upper body statics were evident. Most strikingly, the females showed greater thoracic kyphosis and lumbar lordosis angles (kyphosis: Ø ♀ 56°, Ø♂ 51°; lordosis: Ø ♀ 49°, Ø♂ 32°) and lumbar bending angles (Ø ♀ 14°, Ø♂ 11°) than the males. The distance between the scapulae was more pronounced in men. These parameters also show an increase with age and BMI, respectively. Pelvic parameters were independent of age and sex. The upper body postures of women and men between the ages of 21 and 60 years were found to be almost symmetrical and axis-conforming with a positive correlation for BMI or age. Consequently, the present body posture parameters allow for comparisons with other studies, as well as for the evaluation of clinical (interim) diagnostics and applications.
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Affiliation(s)
- D Ohlendorf
- Institute of Occupational Medicine, Social Medicine and Environmental Medicine, Goethe-University Frankfurt/Main, Theodor-Stern-Kai 7, Building 9A, 60590, Frankfurt/Main, Germany.
| | - I Avaniadi
- Institute of Occupational Medicine, Social Medicine and Environmental Medicine, Goethe-University Frankfurt/Main, Theodor-Stern-Kai 7, Building 9A, 60590, Frankfurt/Main, Germany
| | - F Adjami
- Department of Orthodontics, School of Dentistry, Goethe University Frankfurt/Main, Frankfurt, Germany
| | - W Christian
- Institute of Occupational Medicine, Social Medicine and Environmental Medicine, Goethe-University Frankfurt/Main, Theodor-Stern-Kai 7, Building 9A, 60590, Frankfurt/Main, Germany
| | - C Doerry
- Institute of Occupational Medicine, Social Medicine and Environmental Medicine, Goethe-University Frankfurt/Main, Theodor-Stern-Kai 7, Building 9A, 60590, Frankfurt/Main, Germany
| | - V Fay
- Institute of Occupational Medicine, Social Medicine and Environmental Medicine, Goethe-University Frankfurt/Main, Theodor-Stern-Kai 7, Building 9A, 60590, Frankfurt/Main, Germany
| | - V Fisch
- Institute of Occupational Medicine, Social Medicine and Environmental Medicine, Goethe-University Frankfurt/Main, Theodor-Stern-Kai 7, Building 9A, 60590, Frankfurt/Main, Germany
| | - A Gerez
- Institute of Occupational Medicine, Social Medicine and Environmental Medicine, Goethe-University Frankfurt/Main, Theodor-Stern-Kai 7, Building 9A, 60590, Frankfurt/Main, Germany
| | - J Goecke
- Institute of Occupational Medicine, Social Medicine and Environmental Medicine, Goethe-University Frankfurt/Main, Theodor-Stern-Kai 7, Building 9A, 60590, Frankfurt/Main, Germany
| | - U Kaya
- Institute of Occupational Medicine, Social Medicine and Environmental Medicine, Goethe-University Frankfurt/Main, Theodor-Stern-Kai 7, Building 9A, 60590, Frankfurt/Main, Germany
| | - J Keller
- Institute of Occupational Medicine, Social Medicine and Environmental Medicine, Goethe-University Frankfurt/Main, Theodor-Stern-Kai 7, Building 9A, 60590, Frankfurt/Main, Germany
| | - D Krüger
- Institute of Occupational Medicine, Social Medicine and Environmental Medicine, Goethe-University Frankfurt/Main, Theodor-Stern-Kai 7, Building 9A, 60590, Frankfurt/Main, Germany
| | - J Pflaum
- Institute of Occupational Medicine, Social Medicine and Environmental Medicine, Goethe-University Frankfurt/Main, Theodor-Stern-Kai 7, Building 9A, 60590, Frankfurt/Main, Germany
| | - L Porsch
- Institute of Occupational Medicine, Social Medicine and Environmental Medicine, Goethe-University Frankfurt/Main, Theodor-Stern-Kai 7, Building 9A, 60590, Frankfurt/Main, Germany
| | - C Loewe
- Institute of Occupational Medicine, Social Medicine and Environmental Medicine, Goethe-University Frankfurt/Main, Theodor-Stern-Kai 7, Building 9A, 60590, Frankfurt/Main, Germany
| | - B Scharnweber
- Department of Orthodontics, School of Dentistry, Goethe University Frankfurt/Main, Frankfurt, Germany
| | - P Sosnov
- Institute of Occupational Medicine, Social Medicine and Environmental Medicine, Goethe-University Frankfurt/Main, Theodor-Stern-Kai 7, Building 9A, 60590, Frankfurt/Main, Germany
| | - E M Wanke
- Institute of Occupational Medicine, Social Medicine and Environmental Medicine, Goethe-University Frankfurt/Main, Theodor-Stern-Kai 7, Building 9A, 60590, Frankfurt/Main, Germany
| | - G Oremek
- Institute of Occupational Medicine, Social Medicine and Environmental Medicine, Goethe-University Frankfurt/Main, Theodor-Stern-Kai 7, Building 9A, 60590, Frankfurt/Main, Germany
| | - H Ackermann
- Institute of Biostatistics and Mathematical Modeling, Goethe-University, Frankfurt/Main, Germany
| | - F Holzgreve
- Institute of Occupational Medicine, Social Medicine and Environmental Medicine, Goethe-University Frankfurt/Main, Theodor-Stern-Kai 7, Building 9A, 60590, Frankfurt/Main, Germany
| | - F Keil
- Institute of Neuroradiology, Goethe-University, Frankfurt/Main, Germany
| | - D A Groneberg
- Institute of Occupational Medicine, Social Medicine and Environmental Medicine, Goethe-University Frankfurt/Main, Theodor-Stern-Kai 7, Building 9A, 60590, Frankfurt/Main, Germany
| | - C Maurer-Grubinger
- Institute of Occupational Medicine, Social Medicine and Environmental Medicine, Goethe-University Frankfurt/Main, Theodor-Stern-Kai 7, Building 9A, 60590, Frankfurt/Main, Germany
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Naguib NNN, Kaltenbach B, Abdel-Karim AA, Elabd A, Abd-Elsalam H, Hammerstingl R, Ackermann H, Vogl TJ, Nour-Eldin NEA. MRI analysis of uterine ischaemia as a form of non-target embolisation following uterine artery embolisation: incidence, extent and outcome. Clin Radiol 2021; 76:924-929. [PMID: 34452735 DOI: 10.1016/j.crad.2021.07.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 07/22/2021] [Indexed: 11/26/2022]
Abstract
AIM To study the incidence, extent and fate of uterine ischaemia as one of the forms of non-target embolisation following uterine artery embolisation (UAE), as detected on immediate post-embolisation and contrast-enhanced magnetic resonance imaging (MRI) examinations at the 3-month follow-up. MATERIALS AND METHODS A retrospective study was undertaken comprising 43 women (mean age: 44.8 ± 3.79 years). MRI was performed before, immediately after (within 6 h), and 3 months after successful UAE. Areas of uterine ischaemia were identified on immediate post-embolisation MRI as regions of newly developed (compared to pre-embolisation MRI) absent enhancement within the uterus not corresponding to the location of the leiomyoma. The volume of the ischaemic region was calculated using the formula (height × length × width × 0.523). RESULTS Uterine ischaemia was encountered in 29 patients (67.44%). The mean volume of the ischaemic region immediately after UAE was 29.29 ± 19.15 ml (range: 7.36-87.71 ml). At 3-month follow-up, it was 0.35 ± 0.95 ml (range: 0-3.5 ml) with 25 (86%) patients showing complete resolution of the ischaemia. The mean reduction in the volume of the ischaemic region at the 3-month follow-up was 98.24 ± 5.72% (range: 72-100%). This volume reduction was statistically significant (p<0.0001). CONCLUSION Uterine ischaemia as a form of non-target embolisation following UAE might be encountered in up to two thirds of patients. These ischaemic areas are significantly reduced at the 3-month follow-up with up to 86% of cases showing complete reversibility of the ischaemia.
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Affiliation(s)
- N N N Naguib
- Department of Radiology, AMEOS Hospital Halberstadt, Germany; Department of Diagnostic and Interventional Radiology, Faculty of Medicine, Alexandria University, Egypt
| | - B Kaltenbach
- Institute for Diagnostic and Interventional Radiology, Frankfurt University Hospital, Germany
| | - A A Abdel-Karim
- Department of Diagnostic and Interventional Radiology, Faculty of Medicine, Alexandria University, Egypt
| | - A Elabd
- Department of Diagnostic and Interventional Radiology, Faculty of Medicine, Alexandria University, Egypt
| | - H Abd-Elsalam
- Department of Diagnostic and Interventional Radiology, Faculty of Medicine, Alexandria University, Egypt
| | - R Hammerstingl
- Institute for Diagnostic and Interventional Radiology, Frankfurt University Hospital, Germany
| | - H Ackermann
- Department of Biomedical Statistics, Frankfurt University Hospital, Germany
| | - T J Vogl
- Institute for Diagnostic and Interventional Radiology, Frankfurt University Hospital, Germany
| | - N-E A Nour-Eldin
- Institute for Diagnostic and Interventional Radiology, Frankfurt University Hospital, Germany; Department of Diagnostic and Interventional Radiology, Cairo University, Egypt.
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Holländer C, Ackermann H, Parzeller M. Erratum zu: Aktuelle Normwerte der Organgewichte und -indizes für die rechtsmedizinische Praxis, Teil 1. Rechtsmedizin (Berl) 2021. [DOI: 10.1007/s00194-021-00498-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Wach A, Faßbender C, Ackermann H, Parzeller M. [A retrospective mortality analysis of natural deaths of the 65+ generation based on postmortem autopsies performed at the Institute of Legal Medicine in Frankfurt am Main during two periods]. Rechtsmedizin (Berl) 2021; 31:509-519. [PMID: 33716407 PMCID: PMC7938877 DOI: 10.1007/s00194-021-00469-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/30/2021] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND AIM OF THE STUDY In Germany, a constant demographic change is taking place, which leads to an increasing aging of the society. The present study aimed to analyze natural deaths occurring at an age of ≥ 65 years, since health vulnerability in this age group is gaining importance. MATERIAL AND METHODS Autopsy reports of the Institute of Forensic Medicine, University Hospital of the Goethe University Frankfurt/Main, Germany, were retrospectively evaluated regarding natural death cases of ≥ 65-year-olds in a time comparison (period I: 2000-2002; period II: 2013-2015). RESULTS During both periods, a total of 1206 autopsies concerning this age group were performed. Among these, 404 cases (33.5%) of unnatural death and 39 cases (3.2%) of a combination of natural and unnatural death were recorded; in 94 cases (7.8%), the manner of death could not be elucidated. The majority (n = 669; 55.5%) included cases of natural death. In the largest group of these (n = 350; 52.3%), cardiac causes of death were predominant, followed by 132 (19.7%) respiratory and 47 (7.0%) abdominal causes of death. In addition, 37 (5.5%) cases of malignant neoplasms, 33 (4.9%) of ruptures of large vessels, 33 (4.9%) of cerebral, and 37 (5.5%) other cases of natural death were noted. A significant decrease of cardiac causes of death was observed in the comparison of periods I and II. In particular, there was a significant decrease in high-grade occlusive coronary sclerosis. Moreover, there were significant differences between both sexes. Men had significantly more bypasses, stents and heart scars and suffered a myocardial infarction about 10 years earlier than women. CONCLUSION The results of the present study are largely consistent with the literature. The decrease in numbers of cardiac deaths may be attributed to increasingly better medical care and to a significantly higher rate of stent implantation. Especially in times of pandemics, the role of forensic gerontology will become more important.
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Affiliation(s)
- A. Wach
- Institut für Rechtsmedizin, Universitätsklinikum, Goethe-Universität Frankfurt a.M., Kennedyallee 104, 60596 Frankfurt am Main, Deutschland
| | - C. Faßbender
- Institut für Rechtsmedizin, Universitätsklinikum, Goethe-Universität Frankfurt a.M., Kennedyallee 104, 60596 Frankfurt am Main, Deutschland
| | - H. Ackermann
- Institut für Biostatistik und Mathematische Modellierung, Zentrum der Gesundheitswissenschaften, Klinikum und Fachbereich Medizin, Goethe-Universität Frankfurt a.M., Frankfurt am Main, Deutschland
| | - M. Parzeller
- Institut für Rechtsmedizin, Universitätsklinikum, Goethe-Universität Frankfurt a.M., Kennedyallee 104, 60596 Frankfurt am Main, Deutschland
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Ohlendorf D, Kerth K, Osiander W, Holzgreve F, Fraeulin L, Ackermann H, Groneberg DA. Standard reference values of weight and maximum pressure distribution in healthy adults aged 18-65 years in Germany. J Physiol Anthropol 2020; 39:39. [PMID: 33256834 PMCID: PMC7706280 DOI: 10.1186/s40101-020-00246-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 11/11/2020] [Indexed: 12/24/2022] Open
Abstract
Background The aim of this study was to collect standard reference values of the weight and the maximum pressure distribution in healthy adults aged 18–65 years and to investigate the influence of constitutional parameters on it. Methods A total of 416 healthy subjects (208 male / 208 female) aged between 18 and 65 years (Ø 38.3 ± 14.1 years) participated in this study, conducted 2015–2019 in Heidelberg. The age-specific evaluation is based on 4 age groups (G1, 18–30 years; G2, 31–40 years; G3, 41–50 years; G4, 51–65 years). A pressure measuring plate FDM-S (Zebris/Isny/Germany) was used to collect body weight distribution and maximum pressure distribution of the right and left foot and left and right forefoot/rearfoot, respectively. Results Body weight distribution of the left (50.07%) and right (50.12%) foot was balanced. There was higher load on the rearfoot (left 54.14%; right 55.09%) than on the forefoot (left 45.49%; right 44.26%). The pressure in the rearfoot was higher than in the forefoot (rearfoot left 9.60 N/cm2, rearfoot right 9.51 N/cm2/forefoot left 8.23 N/cm2, forefoot right 8.59 N/cm2). With increasing age, the load in the left foot shifted from the rearfoot to the forefoot as well as the maximum pressure (p ≤ 0.02 and 0.03; poor effect size). With increasing BMI, the body weight shifted to the left and right rearfoot (p ≤ 0.001, poor effect size). As BMI increased, so did the maximum pressure in all areas (p ≤ 0.001 and 0.03, weak to moderate effect size). There were significant differences in weight and maximum pressure distribution in the forefoot and rearfoot in the different age groups, especially between younger (18–40 years) and older (41–65 years) subjects. Discussion Healthy individuals aged from 18 to 65 years were found to have a balanced weight distribution in an aspect ratio, with a 20% greater load of the rearfoot. Age and BMI were found to be influencing factors of the weight and maximum pressure distribution, especially between younger and elder subjects. The collected standard reference values allow comparisons with other studies and can serve as a guideline in clinical practice and scientific studies.
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Affiliation(s)
- D Ohlendorf
- Institute for Occupational Medicine, Social Medicine and Environmental Medicine, Goethe-University Frankfurt, Frankfurt am Main, Germany
| | - K Kerth
- Institute for Occupational Medicine, Social Medicine and Environmental Medicine, Goethe-University Frankfurt, Frankfurt am Main, Germany
| | - W Osiander
- School of Dentistry, Department of Orthodontics, Goethe-University Frankfurt, Frankfurt am Main, Germany
| | - F Holzgreve
- Institute for Occupational Medicine, Social Medicine and Environmental Medicine, Goethe-University Frankfurt, Frankfurt am Main, Germany.
| | - L Fraeulin
- Institute for Occupational Medicine, Social Medicine and Environmental Medicine, Goethe-University Frankfurt, Frankfurt am Main, Germany
| | - H Ackermann
- Institute of Biostatistics and Mathematical Modeling, Goethe-University Frankfurt, Frankfurt am Main, Germany
| | - D A Groneberg
- Institute for Occupational Medicine, Social Medicine and Environmental Medicine, Goethe-University Frankfurt, Frankfurt am Main, Germany
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Ackermann H, Helmling M, Hoeser S, Tellaeche C, Weiß C. Bringing model‐based decision support closer to the shop floor in the chemical industry – A practical approach. CHEM-ING-TECH 2020. [DOI: 10.1002/cite.202055065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- H. Ackermann
- Fraunhofer ITWM Optimization Fraunhofer-Platz 1 67663 Kaiserslautern Germany
| | - M. J. Helmling
- Fraunhofer ITWM Optimization Fraunhofer-Platz 1 67663 Kaiserslautern Germany
| | - S. R. Hoeser
- BASF Italia S. p. A Via Pila 6/3 40037 Pontecchio Marconi (BO) Italy
| | - C. Tellaeche
- BASF SE Carl-Bosch-Str. 38 67063 Ludwigshafen am Rhein Germany
| | - C. Weiß
- Fraunhofer ITWM Optimization Fraunhofer-Platz 1 67663 Kaiserslautern Germany
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Affiliation(s)
- H. Ackermann
- Klinikum der Johann Wolfgang Goethe‐Universität Frankfurt am Main Zentrum der medizinischen InformatikAbteilung für Biomathematik
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Alhawari Y, Verhoff MA, Ackermann H, Parzeller M. Religious denomination influencing attitudes towards brain death, organ transplantation and autopsy—a survey among people of different religions. Int J Legal Med 2019; 134:1203-1212. [DOI: 10.1007/s00414-019-02130-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 07/26/2019] [Indexed: 10/26/2022]
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Klesius A, Konerding MA, Knez P, Dzemali O, Schmitz-Rixen T, Ackermann H, Moritz A, Kleine P. External Stenting with a New Polyester Mesh Reduces Neointimal Hyperplasia of Vein Grafts in a Sheep Model. Int J Artif Organs 2018; 30:930-8. [DOI: 10.1177/039139880703001011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Objective External stents placed around vein grafts have demonstrated effectiveness in reducing neointimal hyperplasia by preventing distension of the thin-walled vein grafts when exposed to arterial pressure. However, the ideal stent material has yet to be defined. The following study investigates the short- and long-term effects of an innovative polyester mesh stent designed with optimized adaptation of circumferential compliance. Methods Following in vitro definition of the ideal macro-porous polyester stent material, a total of 12 sheep underwent implantation of bilateral carotid artery vein graft bypasses. In six sheep, the short-term outcome (four weeks of implantation) was investigated by comparing the newly-designed stent to native veins, micro-porous PTFE stent grafts and metallic Biocompound® stents (BCGs). Flow volume and graft diameter were measured prior to explantation. Grafts were evaluated histologically with respect to morphometry and immunoassaying. In the long-term group (6-month implantation time), the polyester stent was compared to native veins. Results All stents effectively prevented dilatation of the graft. Perfused vessel diameters of the polyester veins were 8.3±0.6 mm. BCG as well as PTFE veins showed diameter reduction to 7.4±0.7mm (p<0.05) and 7.8±0.4 mm (p<0.05), respectively. Both in the short and long terms, the new polyester stent led to significantly higher reduction of neointimal hyperplasia and luminal encroachment compared to the native vessel. It proved superior to PTFE stenting, while the Biocompound® material failed to prove efficacy. Conclusions It was demonstrated that the new macro-porous polyester mesh stent reduced neointimal hyperplasia more effectively than other commercially available stents.
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Affiliation(s)
- A.A. Klesius
- Department of Thoracic and Cardiovascular Surgery, J.W. Goethe University, Frankfurt - Germany
| | - M. A. Konerding
- Department of Anatomy, Johannes Gutenberg-University, Mainz - Germany
| | - P. Knez
- Department of Vascular Surgery, J.W. Goethe University, Frankfurt - Germany
| | - O. Dzemali
- Department of Thoracic and Cardiovascular Surgery, J.W. Goethe University, Frankfurt - Germany
| | - T. Schmitz-Rixen
- Department of Vascular Surgery, J.W. Goethe University, Frankfurt - Germany
| | - H. Ackermann
- Department of Biomedical Statistics, J.W. Goethe University, Frankfurt - Germany
| | - A. Moritz
- Department of Thoracic and Cardiovascular Surgery, J.W. Goethe University, Frankfurt - Germany
| | - P. Kleine
- Department of Thoracic and Cardiovascular Surgery, J.W. Goethe University, Frankfurt - Germany
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Happel C, Heck K, Ackermann H, Grünwald F, Korkusuz H. Percutaneous thermal microwave ablation of thyroid nodules. Nuklearmedizin 2018; 53:123-30. [DOI: 10.3413/nukmed-0631-13-10] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 03/11/2014] [Indexed: 12/22/2022]
Abstract
SummaryMicrowave ablation (MWA) is a new minimal invasive method for thermal ablation of benign thyroid nodules. In contrast to well-established radiofrequency ablation (RFA), MWA offers several advantages with similarly successful results. There has not been any use of functional imaging with 99mTc-per- technetate and 99mTc-MIBI-scans as a mere qualitative analysis of this imaging in the field of MWA in Europe until now. The aim of this study has been to demonstrate the feasibility of MWA as well as the applicability of functional imaging to verify effectiveness with a centerspecific score. Patients, methods: 11 patients (5 women, 6 men, average age 62.3 years) with 18 benign thyroid nodules were treated. MWA was operated under local anesthesia with a system working in a wavelength field of 902 to 928 MHz (Avecure MWG881, MedWaves, Inc. San Diego, CA). Pre- and postablative scans were controlled by two specialists in nuclear medicine with longtime work experience. Results: A center specific functional imaging score (CSFIS) was defined, a decrease of 1.4 points at an average was noticeable (range 1-3 points). In 66.7% (n = 12) of all nodules the score decreased by 1 point, 27.8% (n = 5) by 2 points and 5.6% (n = 1) by 3 points. The treatment was well tolerated and no severe complications were observed. Conclusion: The preliminary data suggests that MWA is an effective method to treat benign thyroid nodules. Functional imaging is a promising technique for early verification of effectiveness of thermal ablation.
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Kanagendran R, Scheuermann J, Ackermann H, Kaufmann R, Boehncke WH, Ludwig RJ, Schindewolf M, Wolf Z, Lindhoff-Last E. Peak and baseline concentrations of fondaparinux during prophylactic therapy. Phlebologie 2017. [DOI: 10.1055/s-0037-1621772] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
SummaryFondaparinux is widely approved for prophylaxis and treatment of venous thromboembolic events (VTE). However, its longer half-life time compared to heparins limits its peri-procedural use.
Aim: To investigate 3h peak and 24h baseline concentrations of fondaparinux when administered for prophylaxis (1 x 2.5 mg qd). Secondary outcome measures: incidences of VTE, bleedings, HIT, allergic skin reactions, 30 days mortality.
Patients, methods: Between 02/2010 and 03/2011, 3h peak and 24h baseline levels of fondaparinux were measured with a chromogenic anti-FXa method in 75 consecutive patients. Medical data were obtained from patients' records.
Results: The 5% and 95% percentile of the 3h peak level were 0.20 μg/ml and 0.83 μg/ml (median: 0.53 μg/ml), and of the 24h baseline level 0.08 μg/ml and 0.53 μg/ml (median 0.21 μg/ml), respectively. An inverse correlation was found between fondaparinux levels and GFRs (rho=-0.617 (3h); rho=-0.648 (24h); p=0.01). Shorter (≤5 days) or longer (≥8 days) duration of prior fondaparinux exposure showed no significantly different 3h peak/24h baseline levels (p>0.6). One progressive thrombosis occurred but no major bleedings, HIT, allergic skin reactions or fatalities.
Conclusions: After fondaparinux exposure, >75% of the patients still had relevant prophylactic 24h baseline levels. This did not coincide with a high rate of bleeding events. Due to the low patient number in this study undergoing surgery or interventions, it remains to be investigated whether or at which concentrations the bleeding risk is increased when baseline levels are within prophylactic ranges.
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Nimsdorf F, Happel C, Ackermann H, Grünwald F, Korkusuz H. Percutaneous microwave ablation of benign thyroid nodules. Nuklearmedizin 2017; 54:13-9. [DOI: 10.3413/nukmed-0678-14-06] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Accepted: 11/11/2014] [Indexed: 12/16/2022]
Abstract
SummaryAim: Thyroid nodules represent a common clinical issue. Amongst other minimally invasive procedures, percutaneous microwave ablation (MWA) poses a promising new approach. The goal of this retrospective study is to find out if there is a correlation between volume reduction after 3 months and 99mTcuptake reduction of treated thyroid nodules. Patients, methods: 14 patients with 18 nodules were treated with MWA. Pre-ablative assessment included sonographical and functional imaging of the thyroid with 99mTcpertechnetate and 99mTc-MIBI. Additionally, patients underwent thyroid scintigraphy 24 hours after ablation in order to evaluate the impact of the treatment on a functional level and to ensure sufficient ablation of the targeted area. At a 3-month follow-up, ultrasound examination was performed to assess nodular volume reduction. Results: Mean relative nodular volume reduction after three months was 55.4 ± 17.9% (p < 0.05). 99mTcuptake 24 hours after treatment was 45.2 ± 31.9% (99mTc-MIBI) and 35.7 ± 20.3% (99mTcpertechnetate) lower than prior to ablation (p < 0.05). Correlating reduction of volume and 99mTc-uptake, Pearson's r was 0.41 (p < 0.05) for nodules imaged with 99mTc-MIBI and –0.98 (p < 0.05) for 99mTc-pertechnetate. According to scintigraphy 99.6 ± 22.6% of the determined target area could be successfully ablated. Conclusions: MWA can be considered as an efficient, low-risk and convenient new approach to the treatment of benign thyroid nodules. Furthermore, scintigraphy seems to serve as a potential prognostic tool for the later morphological outcome, allowing rapid evaluation of the targeted area in post-ablative examination.
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Ekhart D, Wicht H, Kersken T, Ackermann H, Kaczmarczyk M, Pretzsch G, Alexander H, Korf HW. Dynamics of core body temperature cycles in long-term measurements under real life conditions in women. Chronobiol Int 2017; 35:8-23. [DOI: 10.1080/07420528.2017.1375942] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- D Ekhart
- Dr. Senckenbergisches Chronomedizinisches Institut, Fachbereich Medizin der Goethe-Universität, Frankfurt am Main, Germany
| | - H Wicht
- Dr. Senckenbergische Anatomie, Fachbereich Medizin der Goethe-Universität, Frankfurt am Main, Germany
| | | | - H Ackermann
- Institut für Biostatistik und mathematische Modellierung, Fachbereich Medizin der Goethe-Universität, Frankfurt am Main, Germany
| | - M Kaczmarczyk
- Klinik und Poliklinik für Frauenheilkunde und Geburtshilfe, Universitätsklinikum Carl Gustav Carus der Technischen Universität Dresden, Dresden, Germany
| | - G Pretzsch
- Universitätsfrauenklinik Leipzig, Medizinische Fakultät der Universität Leipzig, Leipzig, Germany
| | - H Alexander
- Universitätsfrauenklinik Leipzig, Medizinische Fakultät der Universität Leipzig, Leipzig, Germany
| | - HW Korf
- Dr. Senckenbergisches Chronomedizinisches Institut, Fachbereich Medizin der Goethe-Universität, Frankfurt am Main, Germany
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Ziegler W, Ackermann H. Subcortical Contributions to Motor Speech: Phylogenetic, Developmental, Clinical. Trends Neurosci 2017; 40:458-468. [DOI: 10.1016/j.tins.2017.06.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 06/13/2017] [Accepted: 06/20/2017] [Indexed: 02/01/2023]
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Vogl T, Basten L, Ackermann H, Nour-Eldin N, Naguib N. Mikrowellenablation von Lungenmetastasen mit konstanter Energiekontrolle zum Erreichen einer sphärischen Ablationszone: Retrospektive Evaluation. ROFO-FORTSCHR RONTG 2017. [DOI: 10.1055/s-0037-1600307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- T Vogl
- Uniklinik Frankfurt, Institut für Diagnostische und Interventionelle Radiologie, Frankfurt a.M
| | - L Basten
- Uniklinik Frankfurt, Institut für Diagnostische und Interventionelle Radiologie, Frankfurt a.M
| | - H Ackermann
- Universität Frankfurt, Institut für Medizinische Statistik, Frankfurt a.M
| | - N Nour-Eldin
- Uniklinik Frankfurt, Institut für Diagnostische und Interventionelle Radiologie, Frankfurt a.M
| | - N Naguib
- Uniklinik Frankfurt, Institut für Diagnostische und Interventionelle Radiologie, Frankfurt a.M
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Buxmann H, Reitter A, Bapistella S, Stürmer M, Königs C, Ackermann H, Louwen F, Bader P, Schlößer RL, Willasch AM. Maternal CD4+ microchimerism in HIV-exposed newborns after spontaneous vaginal delivery or caesarean section. Early Hum Dev 2016; 98:49-55. [PMID: 27351353 DOI: 10.1016/j.earlhumdev.2016.06.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2016] [Revised: 05/24/2016] [Accepted: 06/14/2016] [Indexed: 01/21/2023]
Abstract
BACKGROUND Maternal CD4+ cell microchimerism may be greater after caesarean section compared to spontaneous vaginal delivery and could cause mother-to-child transmission (MTCT) in HIV-exposed newborns. AIMS To evaluate maternal CD4+ cell microchimerism in HIV-exposed newborns after spontaneous vaginal delivery or caesarean section. STUDY DESIGN AND SUBJECTS In this prospective single-centre study, neonates whose mothers were infected with HIV and had normal MTCT risk according to the German Austrian Guidelines were considered for study enrolment. Maternal CD4+ cell microchimerism in the newborns' umbilical cord blood was measured and compared by mode of delivery. RESULTS Thirty-seven HIV-infected mothers and their 39 newborns were included in the study. None of the 17 (0.0%) newborns delivered vaginally had quantifiable maternal CD4+ cells (95% confidence interval (CI): 0.00-0.00) in their circulation at birth compared with four of 16 (25.0%) newborns delivered via planned caesarean section, who showed 0.01-0.66% maternal cells (95% CI: -0.06-0.16; P=0.02) in their circulation. The intention to treat analysis, which included six additional newborns delivered by unplanned caesarean section, showed quantifiable maternal CD4+ cells in one (0.05%; 95% CI: -0.02-0.04) of 23 (4.3%) newborn at birth compared to four of 16 (25.0%) born via planned caesarean section (95% CI: -0.06-0.16; P=0.04). There was no MTCT in any of the newborns. CONCLUSION In this small cohort, spontaneous vaginal delivery in HIV-infected women with normal MTCT risk was associated with lower maternal CD4+ cell transfer to newborns compared to planned caesarean section.
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Affiliation(s)
- H Buxmann
- Goethe University, Department for Children and Adolescents, Division for Neonatology, University Hospital Frankfurt/Main, Germany.
| | - A Reitter
- Department of Gynecology and Obstetrics, Division of Obstetrics and Prenatal Medicine, University Hospital Frankfurt/Main, Germany
| | - S Bapistella
- Goethe University, Department for Children and Adolescents, Division for Neonatology, University Hospital Frankfurt/Main, Germany
| | - M Stürmer
- Institute for Medical Virology, University Hospital Frankfurt/Main, Germany
| | - C Königs
- Department for Children and Adolescents, Division for Stem Cell Transplantation and Immunology, University Hospital Frankfurt/Main, Germany
| | - H Ackermann
- Institute of Biostatistics and Mathematical Modeling, University Hospital Frankfurt/Main, Germany
| | - F Louwen
- Department of Gynecology and Obstetrics, Division of Obstetrics and Prenatal Medicine, University Hospital Frankfurt/Main, Germany
| | - P Bader
- Department for Children and Adolescents, Division for Stem Cell Transplantation and Immunology, University Hospital Frankfurt/Main, Germany
| | - R L Schlößer
- Goethe University, Department for Children and Adolescents, Division for Neonatology, University Hospital Frankfurt/Main, Germany
| | - A M Willasch
- Department for Children and Adolescents, Division for Stem Cell Transplantation and Immunology, University Hospital Frankfurt/Main, Germany
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Markert L, Ackermann H, Verhoff MA, Parzeller M. Der (Hirn-)Tod und seine Feststellung. Rechtsmedizin (Berl) 2016. [DOI: 10.1007/s00194-016-0097-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Bangert D, Blank A, Ackermann H, Parzeller M. Risikoaufklärung. Rechtsmedizin (Berl) 2015. [DOI: 10.1007/s00194-015-0012-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Korkusuz H, Happel C, Klebe J, Ackermann H, Grünwald F. Diagnostic Accuracy of Elastography and Scintigraphic Imaging After Thermal Microwave Ablation of Thyroid Nodules. ROFO-FORTSCHR RONTG 2015; 187:353-9. [DOI: 10.1055/s-0034-1385827] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- H. Korkusuz
- Department of Nuclear Medicine, Johann Wolfgang Goethe University Hospital, Frankfurt, Germany
| | - C. Happel
- Department of Nuclear Medicine, Johann Wolfgang Goethe University Hospital, Frankfurt, Germany
| | - J. Klebe
- Department of Nuclear Medicine, Johann Wolfgang Goethe University Hospital, Frankfurt, Germany
| | - H. Ackermann
- Department of Biomathematics, Johann Wolfgang Goethe University Hospital, Frankfurt, Germany
| | - F. Grünwald
- Department of Nuclear Medicine, Johann Wolfgang Goethe University Hospital, Frankfurt, Germany
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Vogl T, Hormes C, Ackermann H, Adel M, Hübner F, Beeres M. Kontrastmittelfreie 3D-TSE-MR-Angiografie der Unterschenkelarterien: Optimierung der Auflösung und Triggerverzögerung. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1372910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Bodelle B, Klein E, Naguib NNN, Bauer RW, Kerl JM, Al-Butmeh F, Wichmann JL, Ackermann H, Lehnert T, Vogl TJ, Schulz B. Acute intracranial hemorrhage in CT: benefits of sinogram-affirmed iterative reconstruction techniques. AJNR Am J Neuroradiol 2014; 35:445-9. [PMID: 24263695 DOI: 10.3174/ajnr.a3801] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Acute intracranial hemorrhage represents a severe and time critical pathology that requires precise and quick diagnosis, mainly by performing a CT scan. The purpose of this study was to compare image quality and intracranial hemorrhage conspicuity in brain CT with sinogram-affirmed iterative reconstruction and filtered back-projection reconstruction techniques at standard (340 mAs) and low-dose tube current levels (260 mAs). MATERIALS AND METHODS A total of 94 consecutive patients with intracranial hemorrhage received CT scans either with standard or low-dose protocol by random assignment. Group 1 (n=54; mean age, 64 ± 20 years) received CT at 340 mAs, and group 2 (n=40; mean age, 57 ± 23 years) received CT at 260 mAs. Images of both groups were reconstructed with filtered back-projection reconstruction and 5 iterative strengths (S1-S5) and ranked blind by 2 radiologists for image quality and intracranial hemorrhage on a 5-point scale. Image noise, SNR, dose-length product (mGycm), and mean effective dose (mSv) were calculated. RESULTS In both groups, image quality and intracranial hemorrhage conspicuity were rated subjectively with an excellent/good image quality. A higher strength of sinogram-affirmed iterative reconstruction showed an increase in image quality with a difference to filtered back-projection reconstruction (P < .05). Subjective rating showed the best score of image quality and intracranial hemorrhage conspicuity achieved through S3/S4-5. Objective analysis of image quality showed in an increase of SNR with a higher strength of sinogram-affirmed iterative reconstruction. Patients in group 2 (mean: 744 mGycm/1.71 mSv) were exposed to a significantly lower dose than those in group 1 (mean: 1045 mGycm/2.40 mSv, P < .01). CONCLUSIONS S3 provides better image quality and visualization of intracranial hemorrhage in brain CT at 260 mAs. Dose reduction by almost one-third is possible without significant loss in diagnostic quality.
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Affiliation(s)
- B Bodelle
- From the Departments of Diagnostic and Interventional Radiology (B.B., E.K., N.N.N.N., R.W.B., J.M.K., F.A.-B., J.L.W., T.L., T.J.V., B.S.)
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Abstract
The present study investigated the relationship between verbal short-term memory and motor speech processes in healthy control subjects and five patients suffering from Broca's aphasia. Control subjects showed a phonological similarity effect, a word length effect and an articulatory suppression effect, supporting the hypothesis of a phonological store and an articulatory loop component of short-term memory. A similar effect of phonological similarity was observed in the aphasic patients, while the effects of word length and articulatory suppression were reduced. In control subjects, measures of short-term memory were correlated to measures of motor speech rate only if speech rate was assessed in more complex conditions (such as sentence rather than syllable repetition). There was also evidence of an association of speech impairment and short-term memory deficits in the aphasic patients.
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Affiliation(s)
- C Goerlich
- Institute of Medical Psychology and Behavioral Neurobiology, University of Tübingen, Germany
| | - I Daum
- Institute of Medical Psychology and Behavioral Neurobiology, University of Tübingen, Germany
| | - I Hertrich
- Department of Neurology, University of Tübingen, Germany
| | - H Ackermann
- Department of Neurology, University of Tübingen, Germany
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Happel C, Truong PN, Bockisch B, Zaplatnikov K, Kranert WT, Korkusuz H, Ackermann H, Grünwald F. [Colour-coded duplex-sonography versus scintigraphy. Can scintigraphy be replaced by sonography for diagnosis of functional thyroid autonomy?]. Nuklearmedizin 2013; 52:186-91. [PMID: 23872641 DOI: 10.3413/nukmed-0557-13-01] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Accepted: 07/12/2013] [Indexed: 12/13/2022]
Abstract
UNLABELLED Since the development of colour coded duplex-sonography (ccds), several attempts have been made to implement this technique for diagnosis of focal lesions in the thyroid. There are controversial discussions on whether ccds might replace thyroid scintigraphy in diagnosis of hyperfunctional thyroid nodules. Aim of this study was the comparison of ccds and thyroid scintigraphy in diagnosis of functional thyroid autonomy. PATIENTS, MATERIAL AND METHODS 192 patients with thyroid nodules > 10mm detected by conventional sonography underwent thyroid scintigraphy. Additionally, these patients were subjected to ccds of the thyroid. In total, 286 thyroid nodules were examined by scintigraphy, ccds and blood tests. RESULTS Thyroid scintigraphy showed 67% of thyroid nodules as hyperfunctional, 19% indifferent and 14% as hypofunctional. Mean 99mTc uptake of hyperfunctional nodules was 2.19%, of indifferent nodules 1.12% and of hypofunctional nodules 1.06% respectively. The ccds allowed perinodular measurement of flow speed (hyperfunctional: 0.23 ± 0.1 m/s; hypofunctional: 0.22 ± 0.1; indifferent: 0.21 ± 0.09), resistance index (hyperfunctional: 1.21 ± 1.16; hypofunctional: 0.62 ± 0.48; indifferent: 0.93 ± 1.02) and pulsatility index (hyperfunctional: 0.97 ± 0.45; hypofunctional: 0.84 ± 0.4; indifferent: 1.04 ± 0.6) in all nodules as well as intranodular measurement in some of the nodules (24% in hyperfunctional, 2% in indifferent and 15% in hypofunctional nodules). Statistic analysis of the obtained ccds data did not show any practically relevant correlations (p>0.05) with 99mTc uptake, basal TSH, fT3 or fT4. CONCLUSION Thyroid scintigraphy cannot be replaced by ccds for diagnosis of functional thyroid autonomy. Reliable diagnostics still require a combination of thyroid scintigraphy, sonography and blood tests.
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Affiliation(s)
- C Happel
- Dipl.-Ing. Christian Happel, Klinikum der Johann Wolfgang Goethe Universität, Klinik für Nuklearmedizin, Theodor-Stern-Kai 7, 60590 Frankfurt/Main, Tel. 069/63 01 43 30, Fax 069/63 01 38 58, E-Mail: , www.nuklearmedizin-frankfurt.de
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Albrecht M, Vogl TJ, Müller C, Wichmann JL, Schreckenbach T, Bechstein WO, Ackermann H, Zangos S. Verblindete, retrospektive ROC-Analyse der Befundung kolorektaler Lebermetastasen durch MRT, PET/CT und CT vierer Mediziner mit unterschiedlicher radiologischer Erfahrung. ROFO-FORTSCHR RONTG 2013. [DOI: 10.1055/s-0033-1346351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Etzel M, Happel C, von Müller F, Ackermann H, Bojunga J, Grünwald F. [Palpation and elastography of thyroid nodules in comparison]. Nuklearmedizin 2013; 52:97-100. [PMID: 23417692 DOI: 10.3413/nukmed-0519-12-07] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2012] [Accepted: 02/04/2013] [Indexed: 11/20/2022]
Abstract
UNLABELLED In addition to ultrasound, elastography is available for evaluation of thyroid nodules for several years. AIM of this study was to verify a statistically significant correlation between palpation and elastography as well as between scintigraphy and elastography, respectively. PATIENTS, METHODES: 97 solitary thyroid nodules in 67 women (mean age 63.0 ± 14.8 years) and 30 men (mean age 63.4 ± 18.5 years) were colour-coded by a colour spectrum from blue (soft) via yellow to red (hard) (Sonix touch ultrasound system, Ultrasonix, Canada) with a 6-14 MHz probe. These colour codes were classified into an elastography score of ES 1 to ES 4. RESULTS 50 nodules were not palpable, 47 were addressed as "soft" (n = 16), "indifferent" (n = 24) or "hard" (n = 7). Elastography values were higher with increasing stiffness of the palpable nodules. Medians of elastography score were for the soft nodules ES 2, for the indifferent nodules ES 2.5 and for the hard nodules ES 4. A statistically significant correlation could be confirmed by the Jonckheere-Terpstra test (p = 0.01) and Spearman's rank correlation (p = 0.03). No correlation between elastography and scintigraphic uptake could be observed (p = 0.41). CONCLUSION In detectable nodules, palpation is correlated with elastography. Since non-palpable nodules may have differences in elasticity too, elastography can provide additional data, which may influence the further diagnostic procedures and treatment essentially. Based on these results, scintigraphy cannot be replaced by elastography.
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Affiliation(s)
- M Etzel
- Klinik für Nuklearmedizin, Klinikum der Johann-Wolfgang-Goethe-Universität Frankfurt am Main.
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Naguib NNN, Nour-Eldin NEA, Serag-Eldin F, Mazloum YZ, Agameya AF, Abou-Seif S, Etaby AN, Lehnert T, Gruber-Rouh T, Zangos S, Ackermann H, Vogl TJ. Role of uterine artery Doppler in the management of uterine leiomyoma by arterial embolization. Ultrasound Obstet Gynecol 2012; 40:452-458. [PMID: 22173924 DOI: 10.1002/uog.11074] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
OBJECTIVES To study Doppler changes in the uterine artery immediately following and 3 months after uterine artery embolization (UAE) and to test the feasibility of using uterine artery Doppler as a predictor of the predominant side of arterial supply to leiomyomas, amount of embolizing material needed and leiomyoma tumor volume at follow-up. METHODS The study included 38 patients undergoing UAE for leiomyomas. Uterine artery Doppler was performed transabdominally before, within 6 hours after and 3 months after UAE to determine the peak systolic (PSV) and end-diastolic (EDV) velocities and resistance index (RI). Leiomyoma volume was measured using contrast-enhanced magnetic resonance imaging (MRI) before and 3 months after UAE. The predominant side of arterial supply to the leiomyoma was determined on digital subtraction angiography using the uterine artery diameter and tumor blush after contrast injection. For correlations with leiomyoma volume, the average PSV, EDV and RI of both sides was used, while for prediction of the predominant side of supply and for correlation with the amount of embolizing material needed, separate measurements from each side were used. RESULTS Relative to the pre-embolization value, the uterine artery PSV and EDV were significantly reduced (P < 0.05) immediately following UAE, while the RI was significantly elevated (P < 0.05). For prediction of the predominant side of supply, the lowest RI showed the highest accuracy (81.6%). There was no significant correlation between the pre-embolization PSV, EDV or RI and the amount of embolizing material utilized. Immediately post-embolization EDV and RI values were statistically significantly correlated with the 3-month follow-up leiomyoma volume, with RI showing the strongest correlation (P = 0.0400 and 0.0002, rho = 0.34 and - 0.58, respectively). The leiomyoma volume was predicted to have reduced by 38-61% after 3 months if the immediate post-embolization average RI value was between 0.82 and 0.88. CONCLUSION Pre-interventional Doppler assessment can be used to predict the predominant side of supply to leiomyomas but not the amount of embolizing material needed. Immediate post-interventional Doppler assessment can predict the leiomyoma volume after UAE.
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Affiliation(s)
- N N N Naguib
- Radiology Department, Frankfurt University Hospital, Frankfurt, Germany.
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Monsefi N, Zierer A, Bakhtiary F, Vogl T, Ackermann H, Kleine P, Moritz A, Dzemali O. Spherical dilatation of the apex in failing left ventricles: a target for surgical remodelling techniques. J Cardiovasc Surg (Torino) 2012; 53:545-552. [PMID: 22854532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
AIM The present study investigates the geometry of failing left ventricles with a special focus on apical deformation. A new surgical remodelling technique is evaluated. METHODS In 124 patients with impaired left ventricular function (EF<40%) undergoing coronary artery bypass grafting (CABG) left ventricular (LV) geometry was evaluated by MRI scanning before and after surgery. Besides the sphericity index (SI) two further indices were calculated, longitudinal EF (LEF) and an apical conicity index (ACI). The results were compared to 15 patients with coronary heart disease and normal LV function and 10 test persons. In 35 patients with impaired LV function perpendicular apical compression (AC) stitches were placed. RESULTS In failing left ventricles indexed LV length increased (5.3 ± 0.6 cm/m2 vs. 4.7 ± 0.8 cm/m2 in control patients and 4.6 ± 0.3 cm/m2 in test persons, P=0.03). LEF was reduced (6% ± 4 versus 22% ± 6 and 19% ± 7 P=0.04). The classical SI was 0.56 ± 0.06 in heart failure patients, 0.50 ± 0.05 in control patients and 0.48 ± 0.04 in test persons. The ACI were 0.75 ± 0.06, 0.58 ± 0.06 and 0.57 ± 0.04 respectively (P<0.05), indicating a pronounced dilatation at the apex. After apical compression LEF improved to 15 ± 1%, the ACI to 0.64 ± 0.04 (P=0.04). LVEDV (166 ± 11 mL [AC] vs. 196 ± 14 mL [without AC]) as well as LV-EF (48 ± 3% [AC] vs. 36 ± 2% [without AC]) significantly improved only after remodelling (P<0.05). CONCLUSION Apical compression improved ventricular geometry and ventricular function in patients with dialatation of the left ventricular apex.
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Affiliation(s)
- N Monsefi
- Department of Thoracic and Cardiovascular Surgery, J. W. Goethe University, Frankfurt am Main, Germany
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Happel C, Margraf S, Diener J, Kranert WT, Francischetti I, Bitu-Moreno J, Ackermann H, Middendorp M, Theisen A, Moritz A, Scholz M, Grünwald F. [The influence of cardiopulmonary bypass operation on the biodistribution of 99mTc-HMPAO-labelled granulocytes - Evaluation in pigs by planar scintigraphy and section-analyses]. Nuklearmedizin 2012; 51:205-11. [PMID: 22641340 DOI: 10.3413/nukmed-0434-11-10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2011] [Accepted: 05/04/2012] [Indexed: 11/20/2022]
Abstract
AIM of the study was to evaluate the influence of an extra corporal perfusion (cardiopulmonary bypass operation - cpb) on activation and biodistribution of (99m)Tc labelled granulocytes in pigs with and without inhibition of the granulocytes by a leukocyte inhibition module (LIM). The cpb is often related to an activation of granulocytes resulting in an inflammatory answer. The biological mechanisms are unsolved yet. First trials of our group showed that LIM may inhibit the activation of neutrophils and therefore antagonize a cpb-caused impairment of cardiac function. This study is the continuation of these experiments with a higher number of animals and the focus on scintigraphic imaging. ANIMALS, MATERIAL, METHODS: 39 German landrace pigs were subdivided into three groups: group A (control) median sternotomy without cpb, group B with cpb, group C with LIM in addition to cpb. After labelling with (99m)Tc-HMPAO autologues granulocytes were reinjected. Subsequently to cpb, the animals underwent scintigraphic imaging. Quantification was performed with ROI evaluation and with tissue samples (section analysis) examined in a well counter. RESULTS A high uptake of (99m)Tc-HMPAO was found in the liver. The count rates in brain, heart, lung, spleen and kidneys were far below. The amount of 99mTc-activity in the organ related to the half life corrected administered activity [%] was for the tissue samples (group A/B/C): brain 0.01/0.02/0.03; lung 12.1/8.3/11.5; heart 0.35/0.54/0.42; kidney 1.24/0.87/1.02; spleen 4.0/4.0/4.5, liver 16.8/20.9/19.6. The count rates determined by ROI-evaluation of the scintigraphic images related to the total count rate in the image [%] were (group A/B/C): brain 1.1/0.9/1.0; lung 15.6/10.4/12.2; heart 4.0/3.5/3.4; kidney 4.0/2.9/3.2; spleen 7.6/7.7/9.5, liver 23.1/36.7/31.4. A significant difference in the tracer uptake between the groups could neither be detected by scintigraphic imaging nor evaluation of tissue samples. CONCLUSION Scintigraphic imaging as well as section analysis showed a comparable biodistribution of the tracer. Therefore, the initial results of our group were not confirmed with a considerably higher number of animals. Neither cpb nor the use of the LIM influenced distribution of 99mTc-labelled granulocytes in pigs significantly.
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Affiliation(s)
- C Happel
- Klinikum der Johann Wolfgang Goethe Universität, Klinik für Nuklearmedizin, Germany.
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Langer J, Penna-Martinez M, Wallasch M, Ackermann H, Badenhoop K. Fallende UVB Strahlung und der Vitamin D Status von deutschen Typ 1 Diabetikern. DIABETOL STOFFWECHS 2012. [DOI: 10.1055/s-0032-1314614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Tselis N, Baltas D, Tunn U, Buhleier T, Martin T, Milickovic N, Papaioannou S, Ackermann H, Zamboglou N. PO-233 INTENSITY MODULATED HIGH-DOSE-RATE BRACHYTHERAPY AS MONOTHERAPY FOR CLINICALLY LOCALIZED PROSTATE CANCER. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)72199-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Tselis N, Ferentinos K, Kolotas C, Schirren J, Baltas D, Ackermann H, Zamboglou N. PO-420 IMAGE-GUIDED INTERSTITIAL HDR-BRACHYTHERAPY IN THE LOCAL TREATMENT OF INTRATHORACIC MALIGNANCIES. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)72386-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Lidzba K, Staudt M, Zieske F, Schwilling E, Ackermann H. Prestroke/poststroke fMRI in aphasia: perilesional hemodynamic activation and language recovery. Neurology 2012; 78:289-91. [PMID: 22238411 DOI: 10.1212/wnl.0b013e318243679a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- K Lidzba
- Department of Pediatric Neurology, University Children’sHospital Tu¨bingen, Tu¨bingen; SFB 833, Germany.
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Abstract
BACKGROUND AND OBJECTIVES Medical and dental students belong to a group of health care workers (HCWs) who are frequently exposed to patients with occupationally transmissible infectious diseases. Vaccinations are the most effective interventions to protect HCWs and patients from vaccine-preventable infectious diseases. Despite decades of effort to encourage HCWs to be immunized, vaccination levels (e. g. influenza) remain insufficient. METHODS To assess the attitudes of German medical and dental students towards mandatory immunizations, an anonymous questionnaire was offered to medical and dental students of the University of Frankfurt/Main, Germany. Overall, 56.9 % (1823/3200) of all medical and dental students attended to the study. RESULTS This study - so far the largest study done on this issue - showed that almost 88.5 % of the responding medical and dental students would accept mandatory vaccinations for HCWs. CONCLUSION Contrary to the widespread concern that a vaccination requirement would cause resistance, our data support that mandatory vaccinations (at least for HCWs who care for immunocompromised patients) might be widely accepted.
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Affiliation(s)
- S Wicker
- Betriebsärztlicher Dienst, Klinikum der Johann Wolfgang Goethe-Universität Frankfurt
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Bauer R, Kraus B, Bernhardt D, Kerl J, Lehnert T, Ackermann H, Vega-Higuera F, Vogl T. Computer-Based Automated Left Atrium Segmentation and Volumetry from ECG-Gated Coronary CT Angiography Data: Comparison with Manual Slice Segmentation and Ultrasound Planimetric Methods. ROFO-FORTSCHR RONTG 2010; 182:1110-7. [PMID: 20938885 DOI: 10.1055/s-0029-1245729] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Schindewolf M, Kroll H, Ackermann H, Garbaraviciene J, Kaufmann R, Boehncke WH, Ludwig RJ, Lindhoff-Last E. Heparin-induced non-necrotizing skin lesions: rarely associated with heparin-induced thrombocytopenia. J Thromb Haemost 2010; 8:1486-91. [PMID: 20128858 DOI: 10.1111/j.1538-7836.2010.03795.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
SUMMARY BACKGROUND Recently, there has been an increasing number of reports regarding adverse skin reactions to subcutaneous heparin administration. Case series have implied that heparin-induced skin lesions are predominantly associated with life-threatening heparin-induced thrombocytopenia (HIT) in at least 22% of patients. Skin lesions, therefore, have been included in clinical scores for HIT. OBJECTIVES To determine the association of heparin-induced skin lesions with HIT. This would have a pivotal impact on further anticoagulatory management in patients with heparin-induced skin lesions. PATIENTS/METHODS In our observational cohort study, 87 consecutive patients with heparin-induced skin lesions (85 occurring during low-molecular-weight heparin administration) were evaluated using a standardized internal protocol, including HIT diagnostics (heparin-platelet factor 4-ELISA, heparin-induced platelet activation assay), platelet count monitoring, clinical/sonographical screening for thrombosis, skin allergy testing and, if necessary, histology. RESULTS None of the observed heparin-induced skin lesions was due to HIT; all lesions were caused by delayed-type IV-hypersensitivity reactions (DTH) instead. Even the cutaneous reaction in one patient with concomitant HIT could be classified histologically as DTH reaction, amounting to an association of heparin-induced skin lesions and HIT in 1.2% (1/87; 95% confidence interval, 0.00-0.06). CONCLUSION Heparin-induced skin lesions associated with use of low-molecular-weight heparins do not seem to be strongly associated with a systemic immunologic reaction in terms of HIT and might rather be due to DTH reactions than due to microvascular thrombosis. Hence, we propose refining existing pretest probability scores for HIT, unless underlying causes have been clarified.
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Affiliation(s)
- M Schindewolf
- Division of Vascular Medicine and Hemostaseology, Department of Medicine, JW Goethe University Hospital, Frankfurt/M, Germany.
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Waßmer R, Zimmer M, Oberndörfer D, Wilken V, Ackermann H, Breitkreutz R. Kann durch eine einfache Schulung das Kommunikations- und Patientenübergabemanagement in der Notfallmedizin verbessert werden? Notf Rett Med 2010. [DOI: 10.1007/s10049-010-1321-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Buenger J, Ackermann H, Jentzsch A, Mehling A, Pfitzner I, Reiffen KA, Schroeder KR, Wollenweber U. An interlaboratory comparison of methods used to assess antioxidant potentials. Int J Cosmet Sci 2010; 28:135-46. [PMID: 18492148 DOI: 10.1111/j.1467-2494.2006.00311.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Many analytical methods are used to measure the antioxidative activity of substances yet little is known about the comparability of the test results between laboratories. After an initial evaluation of a broad range of methods conducted by one laboratory, the 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay, the trolox equivalent antioxidant capacity (TEAC) assay, the lipid assay (or 2,2'-azobis(2-aminepropane) (ABAP) assay) and the thiobarbituric acid (TBA) assay were selected to be evaluated in the interlaboratory study. The antioxidative potentials of trolox, tocopherol, lipochroman-6, ascorbic acid, 4-methyl-brenzcatechin, and/or 3,5-di-tert-butyl-4-hydroxytoluene (BHT) were assessed using each of the methods. These methods were then evaluated in respect of their reproducibility and classification properties. Based on the results of this study, the DPPH assay followed by the TEAC assay yielded the best results based on reproducibility and sensitivity both within one laboratory and between laboratories. The results of the interlaboratory study were then compared with the single center results obtained from the commercially available photochemolumiescence (PCL) kit. To assess the transferability of chemical data to biological systems, they were also compared with the single center results obtained using the cell-based Dichlorodihydrofluoresceine (DCFH) assay.
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Monsefi N, Zierer A, Bakhtiary F, Vogl T, Ackermann H, Kleine P, Moritz A, Dzemali O. Apical compression stitch in patients with failing left ventricles: a new option for surgical remodelling technique. Thorac Cardiovasc Surg 2010. [DOI: 10.1055/s-0029-1246625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Riecker A, Gröschel K, Schnaudigel S, Ackermann H, Kassubek J, Kastrup A. The role of the unaffected hemisphere in motor recovery after stroke. Neuroimage 2009. [DOI: 10.1016/s1053-8119(09)71849-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Hu X, Ackermann H, Erb M, Nardo D, Grodd W, Reiterer S. Mapping Brain Structure and Personality in an Adult Sample of Second Language Pronunciation Talent. Neuroimage 2009. [DOI: 10.1016/s1053-8119(09)71100-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Reiterer S, Hu X, Erb M, Rota G, Jilka M, Grodd W, Ackermann H. Second language pronunciation “talent”: Individual differences between good and poor “pronouncers” of foreign language during speech production. An fMRI investigation. Neuroimage 2009. [DOI: 10.1016/s1053-8119(09)71107-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Reusch J, Ackermann H, Badenhoop K. Cyclic changes of vitamin D and PTH are primarily regulated by solar radiation: 5-year analysis of a German (50 degrees N) population. Horm Metab Res 2009; 41:402-7. [PMID: 19241329 DOI: 10.1055/s-0028-1128131] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Cutaneous vitamin D precursor production depends on UV-exposure and is ineffective in most regions above latitudes of 50 degrees in winter. We hypothesized whether the cyclic course of vitamin D levels can be modelled with sunshine duration and would affect parathyroid hormone concentrations, but not calcium in a large patient population. We investigated 13330 blood samples from 6099 in- and out patients for 25(OH)D3, 1,25(OH)2D3, PTH, and total Ca in Frankfurt, Germany over 6.5 years. Vitamin D deficiency [25(OH)D3 <10 ng/ml] was found in 12.23% and vitamin D insufficiency [25(OH)D3 <20 ng/ml] in 40.62% of all the blood samples and more frequently during winter. We observed a significant difference between men and women, children and adults, migrants and local residents. Cycling of the curve was significantly related to Julian day for 25(OH)D3 and parathyroid hormone (PTH), but not for 1,25(OH)2D3 and Ca. The peak concentration of 25(OH)D3 was found at Aug 16th and correlated well with the length of day whereas PTH is inversely related with 25(OH)D (3). Seasonal cycling of 25(OH)D3-levels correlated significantly with Julian Day and inversely with PTH. This tight feed back ensures stable Ca concentrations within narrow limits. We conclude that changes in vitamin D levels are mainly regulated by solar radiation and to a lesser degree by other factors such as nutrition.
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Affiliation(s)
- J Reusch
- Department of Internal Medicine I, Division Endocrinology, J. W. Goethe University, Theodor-Stern-Kai 7, Frankfurt 69590, Germany.
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Bakhtiary F, Moritz A, Kleine P, Dzemali O, Simon A, Ackermann H, Martens S. Leukocyte depletion during cardiac surgery with extracorporeal circulation in high risk patients. Inflamm Res 2008; 57:577-85. [DOI: 10.1007/s00011-008-8031-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Ackermann H, Brendel B, Ziegler W, Riecker A. Influence of syllable complexity and frequency. Akt Neurol 2008. [DOI: 10.1055/s-0028-1086943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Ackermann H, Eichenberger E, Hunziker F, Lauener H, Schmutz J. Über ein chemisch neuartiges, starkwirksames Antihistaminikum. Pharmacology 2008. [DOI: 10.1159/000135159] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Maataoui A, Reusch E, Khan MF, Gurung J, Thalhammer A, Ackermann H, Mulert-Ernst R, Vogl TJ, Jacobi V. [Comparison of analog and digital fluoroscopy devices regarding patient radiation exposure in enteroclysis]. ROFO-FORTSCHR RONTG 2008; 180:246-51. [PMID: 18278732 DOI: 10.1055/s-2008-1027186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
PURPOSE With the development and refinement of digital imaging, conventional fluoroscopic units are increasingly being replaced by state-of-the-art digital units for the practice of gastrointestinal imaging. The purpose of this study was to compare digital and conventional methods of gastrointestinal imaging by enteroclysis based on radiation exposure to the patient and fluoroscopy time. MATERIALS AND METHODS The medical records of 241 patients who underwent enteroclysis by the conventional technique in 1990 and 309 patients who underwent enteroclysis by digital technique between 2000 and 2004 were reviewed. The radiation exposure of the patient and the fluoroscopy time were evaluated. RESULTS The mean radiation exposure was significantly lower (p < or = 0.05) for patients examined by the digital technique (4945.07 cGy x cm (2)) than for patients examined by the conventional technique (7513.6 cGy x cm (2)). The fluoroscopy time was significantly lower with the conventional technique (mean fluoroscopy time 9 min 43 sec) than with the digital technique (17 min 10 sec). CONCLUSION We conclude that radiation exposure does not correlate directly with fluoroscopy time. Technical refinements of the digital technique such as Last Image Hold frames, which allow images to be stored with no increase in radiation dose and help to reduce digital fluorography exposures and pulsed fluoroscopy, result in significant dose reduction.
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Affiliation(s)
- A Maataoui
- Institut für Diagnostische und Interventionelle Radiologie, J.-W.-Goethe-Universität, Theodor-Stern-Kai 7, Frankfurt am Main.
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Gallwas J, Ackermann H, Friedmann W. Die thrombotisch thrombozytopenische Purpura - Eine seltene und schwierige Differenzialdiagnose zum HELLP-Syndrom in der Spätschwangerschaft. Z Geburtshilfe Neonatol 2008; 212:64-6. [DOI: 10.1055/s-2008-1004710] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Ackermann H, Diener HC, Dichgans J. Funktionsorientierte neurophysiologische Diagnostik: Long loop-Reflexe bei spinalen und zerebralen Läsionen. KLIN NEUROPHYSIOL 2008. [DOI: 10.1055/s-2008-1060938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Ackermann H, Scollo-Lavizzari G. EEG-Veränderungen bei einer Patientin mit akuter intermittierender Porphyrie und einem Schwartz-Bartter-Syndrom (SIADH). KLIN NEUROPHYSIOL 2008. [DOI: 10.1055/s-2008-1061075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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