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Surov A, Meyer HJ, Höhn AK, Behrmann C, Wienke A, Spielmann RP, Garnov N. Correlations between intravoxel incoherent motion (IVIM) parameters and histological findings in rectal cancer: preliminary results. Oncotarget 2017; 8:21974-21983. [PMID: 28423540 PMCID: PMC5400638 DOI: 10.18632/oncotarget.15753] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [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: 11/11/2016] [Accepted: 01/24/2017] [Indexed: 02/07/2023] Open
Abstract
Our purpose was to correlate different intravoxel incoherent motion (IVIM), histopathological and clinical parameters in rectal cancer. 17 patients with histologically proven rectal cancer investigated on a 3.T device were included into the study. DWI was performed using a multi-slice single-shot echo-planar imaging sequence with b values of 0, 50, 200, 500 and 1000 s/mm.2 A polygonal region of interest was drawn within the tumors on every b image. The following parameters were retrieved from IVIM: apparent diffusion coefficient (ADC), true diffusion (D), pseudo diffusion coefficient (D*), perfusion factor (f), and relative perfusion f·D*. In every case, cell count, nucleic areas, proliferation index KI 67, and microvessel density were estimated on histopathological specimens. Pearson's correlation coefficient was used to analyze the association between the parameters. ADC correlated well with KI 67 index and D tended to correlate with cell count and KI 67. ADC and D tended to correlate with total nucleic area. The perfusion factor f correlated well with stained vessel area, total vessel area, and vessel count. D* and fD* correlated with mean vessel diameter. Distant metastasized tumors had higher D* and fD* values. IVIM parameter reflected different clinical and histopathological features in rectal cancer.
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Affiliation(s)
- Alexey Surov
- Department of Radiology, Martin-Luther-University Halle-Wittenberg, Germany.,Department of Diagnostic and Interventional Radiology, University of Leipzig, Germany
| | - Hans Jonas Meyer
- Department of Diagnostic and Interventional Radiology, University of Leipzig, Germany
| | | | - Curd Behrmann
- Department of Diagnostic and Interventional Radiology, University of Leipzig, Germany
| | - Andreas Wienke
- Institute of Medical Epidemiology, Biostatistics, and Informatics, Martin-Luther-University Halle-Wittenberg, Germany
| | - Rolf Peter Spielmann
- Department of Diagnostic and Interventional Radiology, University of Leipzig, Germany
| | - Nikita Garnov
- Department of Radiology, Martin-Luther-University Halle-Wittenberg, Germany
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Surov A, Machens A, Holzhausen HJ, Spielmann RP, Dralle H. Radiological features of metastases to the thyroid. Acta Radiol 2016; 57:444-50. [PMID: 25907117 DOI: 10.1177/0284185115581636] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [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: 12/26/2014] [Accepted: 03/20/2015] [Indexed: 01/31/2023]
Abstract
BACKGROUND Thyroid metastases (TM) are uncommon. Dependent on study design, the reported frequency of TM is in the range of 0.1-6% in different analyses. While clinical and histopathological features of TM were well described in the literature, radiological publications consist predominantly of isolated case reports or small series. PURPOSE To estimate the prevalence, clinical signs, and radiological appearances of TM. MATERIAL AND METHODS From 1997 to 2013, a total of 8849 patients with various disorders of the thyroid gland were treated in our institution. In 33 patients TM were diagnosed. Ultrasound (US) images were available in all patients, computed tomography (CT) of the neck in 16 patients, and magnetic resonance imaging (MRI) in nine patients. RESULTS Clinically, most patients (85%) presented with a painless neck mass. Primary tumors were renal cell carcinoma (79%), colorectal cancer (12%), lung cancer (3%), rhabdomyosarcoma (3%), and breast carcinoma (3%). On US, most lesions were irregular in shape with inhomogenous texture. On CT, all TM were hypodense. On T1-weighted images, most TM were inhomogenously iso-to-hyperintense in comparison to the normal thyroid tissue, and slightly hyperintense on T2-weighted images with an inhomogenous contrast enhancement. CONCLUSION The prevalence of TM was 0.4%. Most of the TM originated from renal cell carcinoma. The identified radiological features of TM should be taken into consideration in the differential diagnosis of thyroid lesions.
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Affiliation(s)
- Alexey Surov
- Department of Radiology, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Andreas Machens
- Department of Surgery, Martin Luther University Halle-Wittenberg, Halle, Germany
| | | | - Rolf Peter Spielmann
- Department of Radiology, Martin Luther University Halle-Wittenberg, Halle, Germany
| | - Henning Dralle
- Department of Surgery, Martin Luther University Halle-Wittenberg, Halle, Germany
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Surov A, Gottschling S, Mawrin C, Prell J, Spielmann RP, Wienke A, Fiedler E. Diffusion-Weighted Imaging in Meningioma: Prediction of Tumor Grade and Association with Histopathological Parameters. Transl Oncol 2015; 8:517-23. [PMID: 26692534 PMCID: PMC4700293 DOI: 10.1016/j.tranon.2015.11.012] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 11/05/2015] [Accepted: 11/11/2015] [Indexed: 02/02/2023] Open
Abstract
OBJECTIVES To analyze diffusion-weighted imaging (DWI) findings of meningiomas and to compare them with tumor grade, cell count, and proliferation index and to test a possibility of use of apparent diffusion coefficient (ADC) to differentiate benign from atypical/malignant tumors. METHODS Forty-nine meningiomas were analyzed. DWI was done using a multislice single-shot echo-planar imaging sequence. A polygonal region of interest was drawn on ADC maps around the margin of the lesion. In all lesions, minimal ADC values (ADCmin) and mean ADC values (ADCmean) were estimated. Normalized ADC (NADC) was calculated in every case as a ratio ADCmean meningioma/ADCmean white matter. All meningiomas were surgically resected and analyzed histopathologically. The tumor proliferation index was estimated on Ki-67 antigen-stained specimens. Cell density was calculated. Collected data were evaluated by means of descriptive statistics. Analyses of ADC/NADC values were performed by means of two-sided t tests. RESULTS The mean ADCmean value was higher in grade I meningiomas in comparison to grade II/III tumors (0.96 vs 0.80 × 10(-3) mm(2)s(-1), P = .006). Grade II/III meningiomas showed lower NADC values in comparison to grade I tumors (1.05 vs 1.26, P = .015). There was no significant difference in ADCmin values between grade I and II/III tumors (0.69 vs 0.63 × 10(-3) mm(2)s(-1), P = .539). The estimated cell count varied from 486 to 2091 (mean value, 1158.20 ± 333.74; median value, 1108). There were no significant differences in cell count between grade I and grade II/III tumors (1163.93 vs 1123.86 cells, P = .77). The mean level of the proliferation index was 4.78 ± 5.08%, the range was 1% to 18%, and the median value was 2%. The proliferation index was statistically significant higher in grade II/III meningiomas in comparison to grade I tumors (15.43% vs 3.00%, P = .001). Ki-67 was negatively associated with ADCmean (r = -0.61, P < .001) and NADC (r = -0.60, P < .001). No significant correlations between cell count and ADCmean (r = -0.20, P = .164) or NADC (r = -0.25, P = .079) were found. ADCmin correlated statistically significant with cell count (r = -0.44, P = .002) but not with Ki-67 (r = -0.22, P = .129). Furthermore, the association between ADCmin and cell count was stronger in grade II/III tumors (r = -0.79, P = .036) versus grade I meningiomas (r = -0.41, P = .008). An ADCmean value of less than 0.85 × 10(-3) mm(2)s(-1) was determined as the threshold in differentiating between grade I and grade II/III meningiomas (sensitivity 72.9%, specificity 73.1%, accuracy 73.0%). The positive and negative predictive values were 33.3% and 96.8%, respectively. The same threshold ADCmean value was used in differentiating between tumors with Ki-67 level ≥5% and meningiomas with low proliferation index (Ki-67 <5%). This threshold yielded a sensitivity of 70.6%, a specificity of 81.2%, and an accuracy of 77.6%. The positive and negative predictive values were 66.6% and 83.9%, respectively. CONCLUSIONS Grade II/III tumors had lower ADCmean values than grade I meningiomas. ADCmean correlated negatively with tumor proliferation index and ADCmin with tumor cell count. These associations were different in several meningiomas. ADCmean can be used for distinguishing between benign and atypical/malignant tumors.
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Affiliation(s)
- Alexey Surov
- Department of Radiology, Martin-Luther-University Halle-Wittenberg, Ernst-Grube-Str. 40, 06097 Halle.
| | - Sebastian Gottschling
- Department of Radiology, Martin-Luther-University Halle-Wittenberg, Ernst-Grube-Str. 40, 06097 Halle.
| | - Christian Mawrin
- Department of Neuropathology, Otto-von-Guericke-University Magdeburg, Leipziger Str. 44, 39120 Magdeburg.
| | - Julian Prell
- Department of Neurosurgery, Martin-Luther-University Halle-Wittenberg, Ernst-Grube-Str. 40, 06097 Halle.
| | - Rolf Peter Spielmann
- Department of Radiology, Martin-Luther-University Halle-Wittenberg, Ernst-Grube-Str. 40, 06097 Halle.
| | - Andreas Wienke
- Institute of Medical Epidemiology, Biostatistics and Informatics, Martin-Luther-University Halle-Wittenberg, Magdeburger Straße 8, 06112 Halle.
| | - Eckhard Fiedler
- Department of Dermatology (histopathological laboratory), Martin-Luther-University Halle-Wittenberg, Ernst-Grube-Str. 40, 06097 Halle.
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Surov A, Caysa H, Wienke A, Spielmann RP, Fiedler E. Correlation Between Different ADC Fractions, Cell Count, Ki-67, Total Nucleic Areas and Average Nucleic Areas in Meningothelial Meningiomas. Anticancer Res 2015; 35:6841-6846. [PMID: 26637905] [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] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
BACKGROUND Meningioma is the most common intracranial tumor. The aim of the present study was to correlate apparent diffusion coefficient (ADC) values with cellularity, Ki-67 and nucleic area in meningioma cases. PATIENTS AND METHODS Twenty-four meningothelial meningiomas were included in the study. Diffusion-weighted imaging was performed using a multi-slice single-shot echo-planar imaging sequence. In all lesions minimal ADC values (ADCmin), mean ADC values (ADCmean), and maximal ADC values (ADCmax) were estimated. Additionally, true ADC values (D) were calculated. All tumors were resected and analyzed histopathologically. The tumor proliferation index was estimated on Ki-67 antigen-stained specimens. Cell density was calculated in every case as an average cell count per five high-power fields. All histological samples were analyzed for estimation of nucleic size and nucleic area. The ImageJ software 1.48v was used for analysis. Analyses of the estimated parameter were performed by means of two-sided t-tests. Correlation analysis was performed using the Pearson's product moment correlation. RESULTS The mean values of ADCmin, ADCmean, ADCmax, and D were 0.64±0.11, 0.89±0.13, 1.15±0.27, and 0.75±0.20×10-3 mm(2)s(-1), respectively. The estimated mean cell count was 1160.08±33.86 cells and the mean level of the proliferation index was 3.46±2.84%. The mean values of average nucleic area and total nucleic area were 65.42±19.38 μm(2) and 64481.87±21120.02 μm(2), respectively ADCmean correlated significant with Ki-67 level, average nucleic area, and total nucleic area, but not with cell count. ADCmin and D correlated significant with cell count and total nucleic area, but not with Ki-67. D was also associated with average nucleic area. ADCmax correlated slightly with cell count. CONCLUSION Several relationships between ADC and histological parameters in meningioma were assessed. ADCmean was negatively associated with Ki-67 level, average nucleic area, and total nucleic area. There was no significant correlation between ADCmean and cell count. ADCmin and D correlated well with total nucleic areas and cell count, but not with Ki-67. ADCmax correlated slightly with cell count.
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Affiliation(s)
- Alexey Surov
- Department of Radiology Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Henrike Caysa
- Department of Internal Medicine, Laboratory of Histopathological Investigation, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Andreas Wienke
- Institute of Medical Epidemiology, Biometry, and Statistics, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Rolf Peter Spielmann
- Department of Radiology Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Eckhard Fiedler
- Department of Dermatology/Histopathology, Martin-Luther-university Halle-Wittenberg, Halle, Germany
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Surov A, Gottschling S, Wienke A, Meyer HJ, Spielmann RP, Dralle H. Primary Thyroid Sarcoma: A Systematic Review. Anticancer Res 2015; 35:5185-5191. [PMID: 26408676] [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] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Different types of malignant tumors can occur within the thyroid. Primary cancer is the most common type of thyroid malignancy. Non-epithelial malignancies can also arise within the thyroid. The aim of the present study was to analyze clinical and radiological characteristics of reported primary thyroid sarcomas (PTS), based on a large sample of cases. The PubMed database was screened for articles from between 1990 and 2014. Overall, 86 articles with 142 patients were identified. Ultrasound evaluation was reported for 36 patients. Data regarding computed tomography of the neck were available for 29 cases. Magnetic resonance imaging was performed for eight patients. The following data were retrieved for the identified sarcomas: localization, size, homogeneity, internal texture, and margin characteristics. In most cases, PTS occurred in patients over 40 years of age, with a peak incidence for the group aged 60-79 years. Angiosarcoma was diagnosed in 29 cases (20.4%), followed by malignant hemangioendothelioma (n=23, 16.3%), malignant fibrous histiocytoma (n=20, 14.1%), leiomyosarcoma (n=16, 11.3%), and fibrosarcoma (n=13, 9.2%). In most patients (n=113, 79.6%), PTS manifested clinically as a painless goiter. On ultrasound, PTS were predominantly mixed hypo-to-hyperechoic in comparison to the normal thyroid tissue. On non-contrast computed tomography, most sarcomas were inhomogeneous hypo-to-hyperdense. On post-contrast magnetic resonance images, most sarcomas showed marked non-homogenous enhancement. In 26.8%, infiltration of the adjacent organs was seen. The trachea or esophagus was affected more frequently in patients with malignant histiocytoma and liposarcoma. Different strategies were used in the treatment of PTS. Our analysis provides clinical and radiological characteristics of PTS. The described features should be taken into consideration in the differential diagnosis of thyroid tumors.
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Affiliation(s)
- Alexey Surov
- Department of Radiology, Martin Luther University, Halle-Wittenberg, Germany Department of Diagnostic and Interventionell Radiology, University of Leipzig, Leipzig, Germany
| | | | - Andreas Wienke
- Institute of Medical Epidemiology, Biometry, and Informatic, Martin Luther University, Halle-Wittenberg, Germany
| | - Hans Jonas Meyer
- Department of Radiology, Martin Luther University, Halle-Wittenberg, Germany
| | | | - Henning Dralle
- Department of Surgery, Martin Luther University, Halle-Wittenberg, Germany
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Meyer HJ, Fiedler E, Kornhuber M, Spielmann RP, Surov A. Comparison of diffusion-weighted imaging findings in brain metastases of different origin. Clin Imaging 2015; 39:965-9. [PMID: 26253774 DOI: 10.1016/j.clinimag.2015.06.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Revised: 06/21/2015] [Accepted: 06/26/2015] [Indexed: 11/19/2022]
Abstract
Our purpose was to estimate apparent diffusion coefficient (ADC) values from brain metastases (BMs). Our patient sample included 159 patients with 948 BMs. Magnetic resonance imaging was obtained with a 1.5-T device. For diffusion-weighted imaging, a multislice single-shot echo-planar imaging sequence was used (b values of 0, 500, and 1000 s/mm(2)). The mean ADC value of BMs was 0.98 ± 0.32 × 10(-3) mm(2) s(-1). A total of 72.8% of BM lesions showed ADC values under 0.90 × 10(-3) mm(2) s(-1). Small-cell lung cancer had the lowest ADC values (0.86 ± 0.27) in comparison to BMs from non-small-cell lung cancer (1.17 ± 0.49), breast carcinoma (0.97 ± 0.21), and malignant melanoma (0.99 ± 0.36).
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Affiliation(s)
- Hans-Jonas Meyer
- Department of Radiology, Martin Luther University, Halle, Wittenberg.
| | - Eckhard Fiedler
- Department of Dermatology, Martin Luther University, Halle, Wittenberg.
| | - Malte Kornhuber
- Department of Neurology, Martin Luther University, Halle, Wittenberg.
| | | | - Alexey Surov
- Department of Radiology, Martin Luther University, Halle, Wittenberg.
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Gottschling S, Bach AG, Schmoll HJ, Behrmann C, Spielmann RP, Wienke A, Abbas J, Surov A. Lungenarterienembolien bei onkologischen Patienten: Häufigkeit und Schweregrad von symptomatischen Ereignissen sowie Zufallsbefunden. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1373612] [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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Bach AG, Schmoll HJ, Beckel C, Behrmann C, Spielmann RP, Wienke A, Abbas J, Surov A. Pulmonary embolism in oncologic patients: frequency and embolus burden of symptomatic and unsuspected events. Acta Radiol 2014; 55:45-53. [PMID: 23864061 DOI: 10.1177/0284185113491569] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Pulmonary embolism (PE) is a common cause of morbidity and mortality in oncologic patients. Furthermore, PE is an unsuspected finding in many cases. PURPOSE To determine the frequency and embolus burden of PE in a consecutive oncologic patient group including symptomatic as well as incidental and initially unreported events. MATERIAL AND METHODS In a retrospective, single-center study from June 2005 to January 2010 all patients with an oncologic disease (ICD-10 code C00 to C96) that received at least one contrast-enhanced computed tomography (CT) examination of the chest were reviewed. The study group included 3270 patients with 6780 examinations. A validated pulmonary artery obstruction index (Mastora score) was used to assess embolus burden. RESULTS PE was found in 240 of 3270 (7.3%) oncologic patients. The frequency was highly variable among different malignancies ranging from 0% to 25%. In the present study about half of all PE were unsuspected. The mean embolus burden was significantly higher in symptomatic PE than in unsuspected PE (P <0.001). The risk of developing a PE was 1.5 times higher in patients with metastases compared to patients without metastases (P <0.005). Age and sex had no influence on PE risk and embolus burden. CONCLUSION PE is a frequent unsuspected finding in staging examinations: particularly in patients with malignancies of the ovary, brain, and pancreas, and in patients with metastases. Therefore, the status of the pulmonary vasculature should be assessed in every staging examination that includes the chest. The effect of therapeutic actions on PE events and the unsuspected finding of PE in follow-up CT examinations require further prospective studies.
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Affiliation(s)
- Andreas Gunter Bach
- Department of Radiology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Hans-Joachim Schmoll
- Department of Oncology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Christoph Beckel
- Department of Radiology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Curd Behrmann
- Department of Radiology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Rolf Peter Spielmann
- Department of Radiology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Andreas Wienke
- Institute of Medical Epidemiology, Biostatistics and Informatics, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Jasmin Abbas
- Department of Radiology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Alexey Surov
- Department of Radiology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
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Abbas J, Wienke A, Spielmann RP, Bach AG, Surov A. Intramammary metastases: comparison of mammographic and ultrasound features. Eur J Radiol 2013; 82:1423-30. [PMID: 23743051 DOI: 10.1016/j.ejrad.2013.04.032] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [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: 10/31/2012] [Accepted: 04/28/2013] [Indexed: 11/16/2022]
Abstract
PURPOSE To describe the mammographical and ultrasound features of IM, and to compare radiological patterns of IM arising from different malignancies. MATERIALS AND METHODS A retrospective search in the statistical database of our institution from January 2000 to December 2009 revealed 51 cases of intramammary metastases from solid malignancies. Additionally, a retrospective search in the Pubmed database was performed. Publications in the time interval from 1980 to 2010 were considered. After thorough analysis, 119 articles with 229 patients were involved in the study. Therefore, together with our cases our analysis comprises 280 patients. Mammographic and ultrasound findings of different IM were analyzed. RESULTS The detected metastases showed two main radiological patterns: intramammary masses (81.5%) and architectural distortion (18.5%). Carcinomas of the stomach caused more frequently an architectural distortion, whereas other malignancies tended to present as intramammary masses. The size of the masses ranged from 2 to 104 mm. The largest lesions occurred in rhabdomyosarcoma, followed by hepatocellular carcinoma and squamous cell carcinomas of the head and neck region. The smallest lesions arose from malignancies of the thyroid gland carcinoma. Most IM showed circumscribed margins, while breast lesions in rhabdomyosarcoma were rather microlobulated. On ultrasound, IM from lung cancer were usually inhomogenously hypoechoic with circumscribed margins and showed posterior shadowing in almost 50% of the cases. Breast metastases from ovarian carcinoma had typically microlobulated margins and posterior enhancement. CONCLUSION IM can present with a broad spectrum of radiological features. Their imaging findings vary depending on the primary tumor.
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Affiliation(s)
- Jasmin Abbas
- Department of Radiology, Martin-Luther-University Halle-Wittenberg, Ernst-Grube-Straße 40, 06097 Halle (Saale), Germany.
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Rusner C, Dieckmann KP, Friedel H, Spielmann RP, Stang A. Häufigkeit der Computertomografie in der Nachsorge von Hodentumorpatienten - eine Einschätzung der Versorgungslage in Deutschland. ROFO-FORTSCHR RONTG 2013. [DOI: 10.1055/s-0033-1346416] [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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Abbas J, Fiedler E, Spielmann RP, Surov A. MR-Bildgebung von intramammären Metastasen. ROFO-FORTSCHR RONTG 2013. [DOI: 10.1055/s-0033-1346624] [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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Frenzen K, Schäfer C, Keyßer G, Spielmann RP. Niederfeld-Magnetresonanztomografie zeigt erosive und entzündliche Gelenkveränderungen an der Hand bei Hämochromatose- Arthropathie. ROFO-FORTSCHR RONTG 2013. [DOI: 10.1055/s-0033-1346631] [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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Bach AG, Restrepo CS, Abbas J, Villanueva A, Lorenzo Dus MJ, Schöpf R, Imanaka H, Lehmkuhl L, Tsang FHF, Saad FFA, Lau E, Alvarez JR, Battal B, Behrmann C, Spielmann RP, Surov A. Imaging of nonthrombotic pulmonary embolism: Biological materials, nonbiological materials, and foreign bodies. Eur J Radiol 2013; 82:e120-41. [DOI: 10.1016/j.ejrad.2012.09.019] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Revised: 09/06/2012] [Accepted: 09/12/2012] [Indexed: 12/21/2022]
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Bach AG, Schramm D, Behrmann C, Spielmann RP, Surov A. Estimation of pulmonary transit time as a by-product in standard CT pulmonary angiography. Acta Radiol 2013; 54:22-3. [PMID: 23377873 DOI: 10.1258/ar.2012.120590] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Andreas Gunter Bach
- Department of Radiology, Martin-Luther-University HalleWittenberg, Halle, Germany
| | - Dominik Schramm
- Department of Radiology, Martin-Luther-University HalleWittenberg, Halle, Germany
| | - Curd Behrmann
- Department of Radiology, Martin-Luther-University HalleWittenberg, Halle, Germany
| | - Rolf Peter Spielmann
- Department of Radiology, Martin-Luther-University HalleWittenberg, Halle, Germany
| | - Alexey Surov
- Department of Radiology, Martin-Luther-University HalleWittenberg, Halle, Germany
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Surov A, Rusner C, Weigand K, John E, Spielmann RP, Behrmann C. Radio-opacity and incidental identified mechanical complications of totally implantable venous access devices placed in the chest. Acta Radiol 2012; 53:1035-9. [PMID: 23028172 DOI: 10.1258/ar.2012.110644] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
BACKGROUND Totally implantable venous access devices (TIVAD) may be associated with different complications. Certain mechanical port disorders can easily be diagnosed on chest radiographs if the implanted systems are radiopaque and well visible. There are no reports regarding the visibility of TIVAD on chest X-rays. PURPOSE To assess the radio opacity of TIVAD implanted in the chest as well as type and frequency of mechanical complications of ports on chest X-ray images. MATERIAL AND METHODS Chest X-rays of 985 patients from the time period 2007-2009 were analyzed retrospectively. In these patients 1190 TIVAD were inserted. All parts of the TIVAD, i.e. port chamber, connection, and port catheter, were checked for their visibility on chest radiographs. An opacity score was used here as follows: ++ well visible; + visible; - partly or completely invisible. Mechanical complications of TIVAD incidentally detected on chest X-ray were also analyzed retrospectively. RESULTS Nineteen TIVAD models with diverse configuration and visibility of port chambers, connections, and catheters were identified in our study. Eighty-eight percent of the analyzed port systems were well visible or visible on chest radiographs. Twelve percent of the port chambers and catheters were partly visible or completely invisible. In 9% of the TIVAD, different mechanical complications were diagnosed on chest X-ray images. CONCLUSION TIVADs should be evaluated carefully on every chest X-ray. Ideally, they should be radio-opaque and well visible on thoracic X-ray images. Unfortunately, this is not always the case. Therefore, manufacturers of TIVAD should take into consideration to use exclusively radio-opaque materials that allow sufficient visibility of each port component on chest radiographs.
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Affiliation(s)
- Alexey Surov
- Department of Radiology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Carsten Rusner
- Department of Radiology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Karl Weigand
- Department of Urology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Endres John
- Department Of Surgery, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Rolf Peter Spielmann
- Department of Radiology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - C Behrmann
- Department of Radiology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
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Rönsch M, Weinitschke K, Spielmann RP, Kunze C. Ultraschallbasierte Leberelastizitätsbestimmung mittels ARFI und ZSI im Kindes- und Jugendalter. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1326831] [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: 10/27/2022]
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Bach AG, Behrmann C, Holzhausen HJ, Spielmann RP, Surov A. Prevalence and imaging of hepatic involvement in malignant lymphoproliferative disease. Clin Imaging 2012; 36:539-46. [DOI: 10.1016/j.clinimag.2012.01.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2011] [Accepted: 01/20/2012] [Indexed: 10/28/2022]
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Kunze C, Müller TG, Holzhausen HJ, Spielmann RP, Surov A. Sonomorphologie der granulomatösen Parotitis im Kindesalter. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311486] [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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Surov A, Spielmann RP, Schmoll HJ, Fiedler E, Behrmann C. Mechanische Komplikationen vollimplantierbarer venöser Portsysteme. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311499] [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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Bach AB, Schramm D, Behrmann C, Spielmann RP, Surov A. Häufigkeit und Bildgebung renaler Non-Hodgkin Lymphome. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311428] [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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21
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Rusner C, Behrmann C, Spielmann RP, Surov A. Materialbedingt variable Beurteilbarkeit von Portsystemen in der radiologischen Diagnostik. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311475] [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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Jasaabuu CH, Abbas J, Fiedler E, Spielmann RP, Behrmann C, Surov A. Intramammäre Zufallsbefunde in der Computertomographie. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311456] [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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Bach AG, Behrmann C, Holzhausen HJ, Katzer M, Arnold D, Spielmann RP, Surov A. Prevalence and patterns of renal involvement in imaging of malignant lymphoproliferative diseases. Acta Radiol 2012; 53:343-8. [PMID: 22287149 DOI: 10.1258/ar.2011.110523] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND Renal involvement in patients with lymphoproliferative disease is an uncommon radiological finding. PURPOSE To determine its prevalence and radiological appearances in a patient population. MATERIAL AND METHODS All forms of lymphoproliferative disease (ICD: C81-C96) were considered. From January 2005 to January 2010, 668 consecutive patients with lymphoproliferative disease were identified with the help of the radiological database and patient records. Inclusion criteria were complete staging including appropriate CT scan and/or MRI. All stored images (initial staging and follow-up examinations) were reviewed. RESULTS Review of all stored images revealed renal infiltration in patients with non-Hodgkin lymphoma (11 of 364 = 3.0%; median age = 65 years, m:f = 6:5) but also multiple myeloma (2 of 162 = 1.2%; median age = 72 years; m:f = 1:1) and leukemia (5 of 101 = 4.9%; median age = 12 years; m:f = 2:3). There were no cases of renal infiltration in 41 patients with Hodgkin's disease. In total there were six patients with solitary lesions, five patients with diffuse renal enlargement, four patients with perirenal lesions, and two patients with direct invasion of the kidney. CONCLUSION In leukemia the most common imaging pattern is diffuse enlargement. In the other subtypes of lymphoproliferative disease no specific correlation between typical CT patterns and subtype of lymphoproliferative disease can be found. The prevalence of renal involvement is in line with earlier studies. Contrary to earlier reports, multiple lesions were not found to be a common pattern.
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Affiliation(s)
| | | | | | - Michaela Katzer
- Department of Urology, Martin-Luther-University Halle-Wittenberg, Halle
| | - Dirk Arnold
- University Cancer Center Hamburg, Hamburg, Germany
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Bach AG, Schramm D, Behrmann C, Spielmann RP, Surov A. Pseudoherzwandaneurysma als Komplikation einer Schrittmacherimplantation. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0031-1300870] [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: 10/14/2022]
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Abstract
BACKGROUND Primary breast sarcoma is very rare. Most reports regarding sarcoma of the breast are clinical observations or pathological series and provide either no or inconstant radiological information. Radiological publications consist predominantly of isolated case reports or small series. PURPOSE To determine the prevalence, clinical signs, and radiological features of primary breast sarcoma. MATERIAL AND METHODS This is a retrospective review of 21 patients with breast sarcoma. All patients were female and their median age was 66 years (range 27-86). In all patients the diagnosis was confirmed histopathologically. RESULTS The prevalence of breast sarcoma was 0.1% of all identified cases with breast malignancies. Clinically, all patients presented with solitary painless breast lumps. There was no uni- or bilateral axillary lymphadenopathy. On mammography (n = 19), two mammographic patterns could be identified: breast masses (68%), and architectural distortion (32%). On ultrasound (n = 8), most lesions were homogeneously hypoechoic, lobular or oval in shape with microlobulated or indistinct margins. On magnetic resonance imaging (n = 3), marked inhomogeneous contrast enhancement was seen in all investigated cases. CONCLUSION The imaging findings of primary breast sarcoma are not pathognomonic. However, they should be taken into consideration in the differential diagnosis of breast lesions.
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Surov A, Wienke, Andreas A, Spielmann RP, Behrmann Curd C. Diffusionswichtung von intramuskulären Metastasen (IMM). ROFO-FORTSCHR RONTG 2011. [DOI: 10.1055/s-0031-1279606] [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: 10/18/2022]
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Surov A, Abbas J, Fiedler E, Holzhausen HJ, Ruschke K, Schmoll HJ, Spielmann RP. Metastasen in der Brust von extramammären soliden Tumoren. ROFO-FORTSCHR RONTG 2011. [DOI: 10.1055/s-0031-1279597] [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: 10/18/2022]
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Surov A, Kunze C, Lieser U, Spielmann RP, Kornhuber M. Is neck flexion during a cerebrospinal fluid puncture a potentially hazardous maneuver? Childs Nerv Syst 2010; 26:717-8. [PMID: 20143076 DOI: 10.1007/s00381-009-1060-y] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2009] [Accepted: 11/18/2009] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Cerebrospinal fluid puncture (CSFP) is a diagnostically meaningful procedure. We describe an acute tetraplegia in a patient as complication after CSFP. CASE HISTORIES Cervical myelopathy due to posterior os odontoideum subluxation was diagnosed, and an occipitocervical fusion was performed surgically. No significant improvement of the neurological status was observed within the following 3 years. CONCLUSIONS Neck flexion as performed during CSFP is a potentially hazardous maneuver. When patients show inconstant symptoms of craniocervical pathology or signs of cervical myelopathy, an os odontoideum should be suspected.
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Affiliation(s)
- Alexey Surov
- Department of Radiology, Martin-Luther-University Halle-Wittenberg, Halle, Germany.
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Surov A, Holzhausen HJ, Arnold D, Schmidt J, Spielmann RP, Behrmann C. Intramuskuläre Metastasen: Prevalenz, Lokalisation, klinische und radiologische Zeichen. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252576] [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: 10/19/2022]
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Stoevesandt D, Grabitz R, Buhmann U, Spielmann RP, Kunze C. Morphologische Beurteilung der Aortenklappe mittels MRT und prognostische Wertigkeit bei der Ausbildung eines Aortenaneurysma bei bekannter Aortenisthmusstenose – Vergleich mit der transthorakalen Echokardiografie. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0029-1247974] [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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Knörgen M, Spielmann RP, Abdalla A, Metz H, Mäder K. Non-invasive MRI detection of individual pellets in the human stomach. Eur J Pharm Biopharm 2009; 74:120-5. [PMID: 19822208 DOI: 10.1016/j.ejpb.2009.09.013] [Citation(s) in RCA: 18] [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] [Received: 04/27/2009] [Revised: 09/11/2009] [Accepted: 09/30/2009] [Indexed: 11/28/2022]
Abstract
MRI is a powerful and non-invasive method to follow the fate of oral drug delivery systems in humans. Until now, most MRI studies focused on monolithic dosage forms (tablets and capsules). Small-sized multi-particulate drug delivery systems are very difficult to detect due to the poor differentiation between the delivery system and the food. A new approach was developed to overcome the described difficulties and permit the selective imaging of small multi-particulate dosage forms within the stomach. We took advantage of the different sensitivities to susceptibility artefacts of T(2)-weighted spin-echo sequences and T(2)-weighted gradient echo pulse sequences. Using a combination of both methods within a breath hold followed by a specific mathematical image analysis involving co-registration, motion correction, voxel-by-voxel comparison of the maps from different pulse sequences and graphic 2D-/3D-presentation, we were able to obtain pictures with a high sensitivity due to susceptibility effects caused by a 1% magnetite load. By means of the new imaging sequence, single pellets as small as 1mm can be detected with high selectivity within surrounding heterogeneous food in the human stomach. The developed method greatly expands the use of MRI to study the fate of oral multi-particulate drug delivery systems and their food dependency in men.
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Affiliation(s)
- Manfred Knörgen
- Department of Diagnostic Radiology, Martin-Luther-University of Halle, Halle, Germany
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Mohr K, Ruschke K, Große R, Strauss HG, Holzhausen HJ, Spielmann RP, Hauptmann S, Thomssen C. Neoadjuvante Chemotherapie mit FEC und Paclitaxel±Trastuzumab beim lokal fortgeschrittenen Mammakarzinom. Geburtshilfe Frauenheilkd 2009. [DOI: 10.1055/s-0029-1238990] [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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33
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Surov A, Arnold D, Spielmann RP, Brandt S, Behrmann C. Lymphom der Skelettmuskulatur. Häufigkeit, Klinische Zeichen und Radiologische Manifestation. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221621] [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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Stoevesandt D, Stock K, Spielmann RP, Heine HJ, Paulsen F, Bräuer L. Postmortal diagnosis of a Dyke-Davidoff-Masson syndrome in a 75-year-old woman---a case report. Ann Anat 2008; 191:225-7. [PMID: 19097769 DOI: 10.1016/j.aanat.2008.09.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2008] [Revised: 09/17/2008] [Accepted: 09/21/2008] [Indexed: 11/17/2022]
Abstract
The Dyke-Davidoff-Masson syndrome is characterized by various symptoms related to hemiatrophy of the cerebrum and hypertrophy of the ipsilateral calvarium and paranasal sinuses. Clinical findings include hemiparesis or hemiplegia, seizures and/or mental retardation. The present report discusses the very unusual case of a late-diagnosed Dyke-Davidoff-Masson syndrome in a 75-year-old body donor who had suffered a left-sided stroke associated with the internal carotid artery in the course of tonsillitis at the age of 5.
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Affiliation(s)
- Dietrich Stoevesandt
- Department of Radiology, Martin Luther-University Halle-Wittenberg, 06120 Halle/Saale, Germany.
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Brauckhoff M, Stock K, Stock S, Lorenz K, Sekulla C, Brauckhoff K, Thanh PN, Gimm O, Spielmann RP, Dralle H. Limitations of intraoperative adrenal remnant volume measurement in patients undergoing subtotal adrenalectomy. World J Surg 2008; 32:863-72. [PMID: 18224482 DOI: 10.1007/s00268-007-9402-y] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [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: 11/26/2022]
Abstract
BACKGROUND Recent studies have shown that a minimum of approximately one-third of one normal adrenal gland is required for sufficient adrenocortical stress capacity. Correlation between intraoperative measurement, determination of remnant size by computed tomography (CT), and adrenocortical stress capacity has not been examined so far. METHODS Twenty-two patients with familial pheochromocytoma (n=13), sporadic pheochromocytoma (n=3), and adrenocortical tumors (n=6) who underwent unilateral or bilateral subtotal adrenalectomy (STAE, 28 adrenal remnants) were prospectively studied. Patients were examined in a multi-slice CT to determine residual adrenal tissue and by ACTH test 4 days and 3 months postoperatively. RESULTS There was a slight significant correlation between intraoperative and CT calculated volumes (r=0.77; p<0.001). However, volumes assessed by CT were almost doubled compared with intraoperative determination (p<0.001). Although recovery of adrenal function could be observed, no significant changes of remnant volumes could be detected within 3 months. In patients with familial pheochromocytoma, there was a significant correlation between residual adrenal volume and stimulated cortisol levels (P<0.001). A distinct minimum of adrenal volume for intact adrenocortical stress capacity could not be exactly determined; however, in one patient with only 10% residual adrenal tissue intact stress capacity was found. CONCLUSIONS Residual adrenal tissue of approximately 10-15% offers intact stress capacity. However, an exact determination of the size of an adrenal remnant after STAE has limitations. CT gives larger volumes compared with intraoperative determination. For calculation of a volume-function correlation of residual adrenal tissue, in clinical practice, the determination of relative adrenal residual volume is acceptable.
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Affiliation(s)
- Michael Brauckhoff
- Department of General, Visceral, and Vascular Surgery, Martin-Luther-University of Halle-Wittenberg, Ernst-Grube-Strasse 40, 06097 Halle/Saale, Germany.
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36
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Kunze C, Stoevesandt D, Föll J, Bau V, Spielmann RP. Retinoblastom bei einem knapp 4-jährigen Knaben. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1074054] [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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37
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Kunze C, Surov A, Kornhuber M, Hess S, Spielmann RP. Die potentielle Gefahr eines Os odontoideum. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1073978] [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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Stoevesandt D, Buerke M, Behrmann C, Heinroth K, Spielmann RP, Werdan K, Schlitt A. Detection of a persistent left superior vena cava by echocardiography, computed tomography, and magnetic resonance imaging. Clin Res Cardiol 2007; 96:191-2. [PMID: 17294348 DOI: 10.1007/s00392-007-0492-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2006] [Accepted: 12/21/2006] [Indexed: 11/27/2022]
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Kunze C, Cseke A, Götze G, Taege C, Spielmann RP. Sarkoidose mit Parotisbeteiligung bei einem 17Jährigen – Verdacht auf beginnendes Heerfordt-Syndrom. ROFO-FORTSCHR RONTG 2007. [DOI: 10.1055/s-2007-977392] [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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40
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Surov A, Spielmann RP, Ommenzetter M, Behrmann C. Pseudotumor nach Kriegsverletzung. ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-941149] [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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Stock K, Stock S, Kunze C, Hoehne SO, Finke R, Spielmann RP. Das Supinationstrauma des oberen Sprunggelenks beim Kind – MRT im Vergleich mit klinischem Befund und Röntgenaufnahmen. ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-940686] [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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Kunze C, Hühn R, Bock C, Lieser U, Spielmann RP. Peri- bzw. postnatal festgestellte Hydranencephalie bei 2 Neugeborenen. ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-941163] [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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43
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Knörgen M, Zhang S, Spielmann RP. Ortsaufgelöste MR-Spektroskopie: Auswertemethoden im Vergleich. ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-941076] [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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44
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Kunze C, Schmidt F, Bock C, Spielmann RP. Pankreas anulare – primär auffällig durch verschluckte Münze bei einem 3-jährigen Mädchen. ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-941162] [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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Stoevesandt D, Spielmann RP, Stock K. Verwendung einer Computertomographie-Lern-CD im Vergleich zu anderen Lernangeboten (Vorlesung, Seminaren, Internet). ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-941108] [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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Knörgen M, Spielmann RP, Haberland EJ, Melkus G. [Measurement of MRI scanner noise]. Z Med Phys 2005; 14:251-9. [PMID: 15656107 DOI: 10.1078/0939-3889-00225] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The present paper describes a simple method for the analysis of MRI scanner noise. Besides the heating of body tissue by strong RF radiation and the formation of circular currents in the body induced bey switching field gradients, a noise level of more than 100 dB(A) during the measurement belongs to the potential risks of MRI. This risk is of particular concern for staff and accompanying persons who remain close to the scanner for different reasons (e. g., monitoring of anesthetized patients, reassuring of children). For this reason, and given the scanty information on noise provided in the manuals of the scanners, it is useful to quantify the noise level more exactly. This applies also to the evaluation of different sound-reducing methods for the patient. This presents the results of noise level measurements in the tomograph and in its surrounding, with and without noise reduction by headphones.
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Affiliation(s)
- Manfred Knörgen
- Klinik für Diagnostische Radiologie, Klinikum der Martin-Luther-Universität Halle-Wittenberg, Halle.
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Krasnianski M, Schlüter A, Neudecker S, Spielmann RP, Stock K. Serial magnet resonance angiography in patients with vasculitis and vasculitis-like angiopathy of the central nervous system. Eur J Med Res 2004; 9:247-55. [PMID: 15257878] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/30/2023] Open
Abstract
The purpose of the study was to examine the value of the non-invasive magnet resonance angiography (MRA) in the follow-up of cerebral vasculitis (CV) and vasculitis-like angiopathy. We performed follow-up MRA (TOF 3D), MRI and transcranial doppler ultrasound (TCD) in the patients with isolated angiitis of the CNS (2/6), Crohn-disease-associated CV (1/6), and reversible arterial vasoconstriction (RAV) of the CNS (1 migraine, 1 eclampsia and 1 toxic encephalopathy) (3/6). In all patients with RAV MRA showed a complete remission of the vascular alterations after treatment. In the patients with isolated angiitis of the CNS and Crohn-disease-associated CV, partly regressive and partly progressive changes were demonstrated. The MR-angiographically detectable vascular alterations corresponded to the clinical course of the disease, as well as to TCD in all our patients. Success of therapeutic procedures, the need and the intensity of further drug administration could be estimated. The MRA appears to be a valuable non-invasive method in the follow-up of patients with CV and RAV.
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Affiliation(s)
- Michael Krasnianski
- Departmetn of Radiology, Martin-Luther-University Halle-Wittenberg, Ernst-Grube-Str. 40, D-06097 Halle (Saale), Germany.
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Stock K, Peters S, Behrmann C, Spielmann RP. [Bilateral carotid dissection. A not to underestimate cause of neurological loss after road accident]. Unfallchirurg 2002; 105:919-22. [PMID: 12376897 DOI: 10.1007/s00113-002-0431-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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: 11/26/2022]
Abstract
The dissection of the internal carotid artery is a rare complication of acceleration traumas of the upper spine. 30% of these dissections are caused by road accidents and again less than 30% of these occur bilateral as shown here. The symptoms are fronto-temporal and periorbital starting headaches spreading out to the occiput and Horner's syndrome. Complete hemiplegia as in our case is an impressive exception but the doctor in attendance should think of the carotid dissection. The exclusion of this complication is obligatory because treatment and outcome depend on it.The dynamic effects of bilateral carotid dissections may, as shown here, lead to relapsing cerebral infarctions with persisting neurologic deficits up to manifest hemiparesis. But restitution can be accomplished if early diagnosed by DSA and/or MRI. Therapy of choice is early prevention of persisting neurologic deficits using effective dosed heparin and depending on the residual lumen of the vessel oral anticoagulants or platelet antagonists for one year.
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MESH Headings
- Accidents, Traffic
- Adult
- Angiography, Digital Subtraction
- Anticoagulants/therapeutic use
- Brain/diagnostic imaging
- Carotid Artery, Internal, Dissection/complications
- Carotid Artery, Internal, Dissection/diagnosis
- Carotid Artery, Internal, Dissection/drug therapy
- Carotid Artery, Internal, Dissection/etiology
- Female
- Fibrinolytic Agents/therapeutic use
- Hemiplegia/etiology
- Heparin/therapeutic use
- Humans
- Magnetic Resonance Imaging
- Time Factors
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Affiliation(s)
- K Stock
- Klinik für diagnostische Radiologie der Martin-Luther-Universität Halle-Wittenberg, Germany
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49
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Heywang-Köbrunner SH, Amaya B, Okoniewski M, Pickuth D, Spielmann RP. CT-guided obturator nerve block for diagnosis and treatment of painful conditions of the hip. Eur Radiol 2002; 11:1047-53. [PMID: 11419151 DOI: 10.1007/s003300000682] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.2] [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: 01/09/2023]
Abstract
Obturator nerve blocks (ONB) have been performed by anaesthesiologists mainly to eliminate the obturator reflex during transurethral resections. An effect on hip pain has also been described. However, being a time-consuming and operator-dependent procedure if performed manually, it has not been widely used for chronic hip pain. The purpose of this pilot study was to check whether CT guidance could improve reproducibility of the block (= immediate effect) and to test its potential value for treatment of chronic hip pain. Fifteen chronically ill patients with osteoarthritis underwent a single ONB. Sixteen millilitres of Lidocaine 1% mixed with 2 ml Iopramide was injected into the obturator canal. The patients were followed up to 9 months after the intervention. With a single injection pain relief was achieved for 1-8 weeks in 7 of 15 patients. Excellent pain relief for 3-11 months was achieved in another 4 patients. Reasons for a mid-term or even long-term effect based on a single injection of local anaesthetic are not exactly known. The CT-guided ONB is a fast, easy and safe procedure that may be useful for mid-term (weeks) and sometimes even long-term (months) treatment of hip pain.
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Affiliation(s)
- S H Heywang-Köbrunner
- Department of Diagnostic Radiology, Martin-Luther University Halle-Wittenberg, Magdeburger Strasse 16, 06097 Halle, Germany.
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50
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Schlüter A, Hirsch W, Jassoy A, Kornhuber M, Behrmann C, Keysser G, Spielmann RP. [MR angiography in diagnosis of vasculitis and benign angiopathies of the central nervous system]. ROFO-FORTSCHR RONTG 2001; 173:522-7. [PMID: 11471293 DOI: 10.1055/s-2001-14995] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [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: 10/16/2022]
Abstract
PURPOSE To evaluate TOF 3D magnetic resonance angiography (MRA) of the intracranial arteries in patients with vasculitis or vasculitis-like benign angiopathy of the central nervous system (CNS). METHOD The results of MRA in 20 patients with clinically and radiographically proven vasculitis (17/20) or vasculitis-like benign angiopathy (3/20) of the CNS were retrospectively analysed. Patients with hyperintense lesions of more than 3 mm on T2-weighted MRI images were included in this trial. An inflammatory, embolic, neurodegenerative or metastatic origin of these lesions was excluded by extensive clinical studies. For the MR-examination a TOF 3D FISP sequence was used on a 1.5 T imager. RESULTS MRA showed characteristic changes for vasculitis or angiopathy in 15 of 20 patients (75%). CONCLUSIONS In patients suspected of having a vasculitis or vasculitis-like angiopathy, MRA is recommended as a non-invasive modality. If the results of MRI and extensive clinical studies are carefully correlated, MRA may substitute conventional angiography in cases with typical vascular changes.
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Affiliation(s)
- A Schlüter
- Klinik für Diagnostische Radiologie, Martin-Luther-Universität Halle-Wittenberg.
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