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Giesel FL, Sterzing F, Schlemmer HP, Holland-Letz T, Mier W, Rius M, Afshar-Oromieh A, Kopka K, Debus J, Haberkorn U, Kratochwil C. Intra-individual comparison of (68)Ga-PSMA-11-PET/CT and multi-parametric MR for imaging of primary prostate cancer. Eur J Nucl Med Mol Imaging 2016; 43:1400-6. [PMID: 26971788 PMCID: PMC4906063 DOI: 10.1007/s00259-016-3346-0] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 02/16/2016] [Indexed: 12/01/2022]
Abstract
Purpose Multi-parametric magnetic resonance imaging (MP-MRI) is currently the most comprehensive work up for non-invasive primary tumor staging of prostate cancer (PCa). Prostate-specific membrane antigen (PSMA)-Positron emission tomography–computed tomography (PET/CT) is presented to be a highly promising new technique for N- and M-staging in recurrent PCa-patients. The actual investigation analyses the potential of 68Ga-PSMA11-PET/CT to assess the extent of primary prostate cancer by intra-individual comparison to MP-MRI. Methods In a retrospective study, ten patients with primary PCa underwent MP-MRI and PSMA-PET/CT for initial staging. All tumors were proven histopathological by biopsy. Image analysis was done in a quantitative (SUVmax) and qualitative (blinded read) fashion based on PI-RADS. The PI-RADS schema was then translated into a 3D-matrix and the euclidian distance of this coordinate system was used to quantify the extend of agreement. Results Both MP-MRI and PSMA-PET/CT presented a good allocation of the PCa, which was also in concordance to the tumor location validated in eight-segment resolution by biopsy. An Isocontour of 50 % SUVmax in PSMA-PET resulted in visually concordant tumor extension in comparison to MP-MRI (T2w and DWI). For 89.4 % of sections containing a tumor according to MP-MRI, the tumor was also identified in total or near-total agreement (euclidian distance ≤1) by PSMA-PET. Vice versa for 96.8 % of the sections identified as tumor bearing by PSMA-PET the tumor was also found in total or near-total agreement by MP-MRI. Conclusions PSMA-PET/CT and MP-MRI correlated well with regard to tumor allocation in patients with a high pre-test probability for large tumors. Further research will be needed to evaluate its value in challenging situation such as prostatitis or after repeated negative biopsies.
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Simons D, Kachelrieß M, Schlemmer HP. Dual-energy CT in oncology: technical principles and clinical prospects. Cancer Imaging 2015. [PMCID: PMC4601760 DOI: 10.1186/1470-7330-15-s1-p51] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Glemser PA, Krauskopf A, Simons D, Schlemmer HP, Yen K. [Clinical forensic imaging. Detection and documentation of internal injuries in living victims of violence]. Radiologe 2015; 55:901-14. [PMID: 26443330 DOI: 10.1007/s00117-015-0021-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
External examination of the body surface with documentation of all visible findings can still be regarded as the status quo of clinical forensic injury assessment. It is obvious that internal findings cannot be detected using this technique. For obtaining such findings accessible well-established radiological techniques, such as computed tomography (CT) and magnetic resonance imaging (MRI) should be used. Especially MRI with no damaging radiation exposure for the examined person allows the detection of internal soft tissue and organ damage and offers a great potential regarding new techniques for allowing insights into tissue composition and function. Furthermore, imaging data collected in clinical institutions before the patient was transferred to the department of legal medicine will play a major role in the future. Although these data were obtained based on a different approach, they provide excellent and recent information on injuries in the respective (current) case und can therefore be of high value for the forensic expertise.
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Tesdorff J, Simons D, Schlemmer HP. Structured reporting of metastatic disease for improving communication in comprehensive cancer centers- a feasibility study. Cancer Imaging 2015. [PMCID: PMC4601120 DOI: 10.1186/1470-7330-15-s1-p30] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Radtke JP, Schwab C, Wolf MB, Freitag MT, Alt C, Kesch C, Popeneciu IV, Huettenbrink C, Bergstraesser-Gasch C, Klein T, Duensing S, Roth S, Schlemmer HP, Roethke M, Hohenfellner M, Hadaschik B. Multiparametric magnetic resonance tomography and MRI/TRUS-fusion-biopsy for index lesion detection: correlation with radical prostatectomy specimen. Cancer Imaging 2015. [PMCID: PMC4601104 DOI: 10.1186/1470-7330-15-s1-s1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Uhrig M, Simons D, Schlemmer HP. Advanced abdominal imaging with dual energy CT is feasible without increasing radiation dose. Cancer Imaging 2015. [PMCID: PMC4601838 DOI: 10.1186/1470-7330-15-s1-p1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Mosebach J, Sachpekidis C, Hillengass J, Haberkorn U, Dimitrakopoulou-Strauss A, Schlemmer HP, Delorme S. Comparison of functional imaging in multiple myeloma patients: Indication for hybrid-imaging with PET/MRI? Cancer Imaging 2015. [PMCID: PMC4601840 DOI: 10.1186/1470-7330-15-s1-s6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Hansen J, Wielpütz MO, Pahn G, Schlemmer HP, Kauczor HU, Stiller W. Quantitative dual-energy computed tomography (DECT) imaging: Evaluation of system performance regarding iodine quantification accuracy. Pneumologie 2015. [DOI: 10.1055/s-0035-1556644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Wolf MB, Roethke M, Pahernik S, Hadaschik B, Kuru T, Popeneciu IV, Hatiboglu G, Chin J, Billia M, Relle J, Hafron J, Nandalur K, Burtnyk M, Schlemmer HP. Localised prostate cancer treated with MRI-guided transurethral ultrasound ablation: phase I trial results. Cancer Imaging 2014. [PMCID: PMC4242781 DOI: 10.1186/1470-7330-14-s1-s3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
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Hillengass J, Stoll J, Zechmann CM, Kunz C, Wagner B, Heiss C, Sumkauskaite M, Moehler TM, Schlemmer HP, Goldschmidt H, Delorme S. The application of Gadopentate-Dimeneglumin has no impact on progression free and overall survival as well as renal function in patients with monoclonal plasma cell disorders if general precautions are taken. Eur Radiol 2014; 25:745-50. [PMID: 25358594 DOI: 10.1007/s00330-014-3458-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Revised: 08/22/2014] [Accepted: 09/29/2014] [Indexed: 11/29/2022]
Abstract
OBJECTIVES The current analysis investigated the prognostic significance of gadopentetate dimeglumine on survival and renal function in patients with monoclonal plasma cell disorders. METHODS In this study 263 patients who had received gadopentetate dimeglumine within a prospective trial investigating dynamic contrast-enhanced magnetic resonance imaging (MRI) were compared with 335 patients who had undergone routine, unenhanced MRI. RESULTS We found no significant prognostic impact of the application of contrast agent on progression-free survival in patients with either monoclonal gammopathy of undetermined significance, smouldering or symptomatic myeloma and no significant prognostic impact on overall survival in patients with symptomatic myeloma. Since renal impairment is a frequent complication of myeloma, and decreased renal function is associated with a higher risk of complications in patients receiving contrast agents, we evaluated the impact of contrast agent on renal function after 1 year. In the present analysis the only significant adverse impact on kidney function occurred in symptomatic myeloma patients who already had impaired renal parameters at baseline. Here, the renal function did not recover during therapy, whereas it did so in patients with normal or only slightly impaired renal function. CONCLUSION If general recommendations are adhered to, gadopentetate dimeglumine can be safely applied in patients with monoclonal plasma cell disease.
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Fard N, Rezaei N, Emmami G, Saffari A, Golriz M, Mehrabi A, Schlemmer HP, Delorme S. Evaluation of hepatic flow changes in early stages after extended hepatectomy by contrast enhanced ultrasound. Cancer Imaging 2014. [PMCID: PMC4242768 DOI: 10.1186/1470-7330-14-s1-p35] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Mosebach J, Sachpekidis C, Fard N, Wilhelm T, Wilhelm M, Hillengass J, Dimitrakopoulou-Strauss A, Schlemmer HP, Delorme S. Characterization of multiple myeloma osseous lesions and diffuse infiltration pattern by 18F-FDG-PET/CT, static MRI and diffusion-weighted MR Imaging (DWI-MRI): a comparative multimodality imaging study. Cancer Imaging 2014. [PMCID: PMC4242677 DOI: 10.1186/1470-7330-14-s1-p33] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Kurz FT, Schlemmer HP, Heiland S, Bendszus M, Ziener CH. Quantitative magnetic resonance imaging of microvascular changes in KHT sarcoma. Cancer Imaging 2014. [PMCID: PMC4242431 DOI: 10.1186/1470-7330-14-s1-p13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Sedlaczek O, Wiedemann C, Gruellich C, Klingmüller U, Kauczor HU, Schlemmer HP. Alteration of MR-DWI/ADC before and 24h after induction of chemotherapy in patients with lung cancer. Cancer Imaging 2014. [PMCID: PMC4242758 DOI: 10.1186/1470-7330-14-s1-p34] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Uhrig M, Simons D, Ganten M, Hassel J, Schlemmer HP. Dual-energy CT for therapy monitoring: histogram analyses of iodine maps reveal typical pattern of enhancement. Cancer Imaging 2014. [PMCID: PMC4241994 DOI: 10.1186/1470-7330-14-s1-p17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Maier-Hein L, Groch A, Bartoli A, Bodenstedt S, Boissonnat G, Chang PL, Clancy NT, Elson DS, Haase S, Heim E, Hornegger J, Jannin P, Kenngott H, Kilgus T, Müller-Stich B, Oladokun D, Röhl S, Dos Santos TR, Schlemmer HP, Seitel A, Speidel S, Wagner M, Stoyanov D. Comparative validation of single-shot optical techniques for laparoscopic 3-D surface reconstruction. IEEE TRANSACTIONS ON MEDICAL IMAGING 2014; 33:1913-1930. [PMID: 24876109 DOI: 10.1109/tmi.2014.2325607] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Intra-operative imaging techniques for obtaining the shape and morphology of soft-tissue surfaces in vivo are a key enabling technology for advanced surgical systems. Different optical techniques for 3-D surface reconstruction in laparoscopy have been proposed, however, so far no quantitative and comparative validation has been performed. Furthermore, robustness of the methods to clinically important factors like smoke or bleeding has not yet been assessed. To address these issues, we have formed a joint international initiative with the aim of validating different state-of-the-art passive and active reconstruction methods in a comparative manner. In this comprehensive in vitro study, we investigated reconstruction accuracy using different organs with various shape and texture and also tested reconstruction robustness with respect to a number of factors like the pose of the endoscope as well as the amount of blood or smoke present in the scene. The study suggests complementary advantages of the different techniques with respect to accuracy, robustness, point density, hardware complexity and computation time. While reconstruction accuracy under ideal conditions was generally high, robustness is a remaining issue to be addressed. Future work should include sensor fusion and in vivo validation studies in a specific clinical context. To trigger further research in surface reconstruction, stereoscopic data of the study will be made publically available at www.open-CAS.com upon publication of the paper.
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Kickingereder P, Sahm F, Wiestler B, Roethke M, Heiland S, Schlemmer HP, Wick W, von Deimling A, Bendszus M, Radbruch A. Evaluation of microvascular permeability with dynamic contrast-enhanced MRI for the differentiation of primary CNS lymphoma and glioblastoma: radiologic-pathologic correlation. AJNR Am J Neuroradiol 2014; 35:1503-8. [PMID: 24722313 DOI: 10.3174/ajnr.a3915] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
BACKGROUND AND PURPOSE Dynamic contrast-enhanced MR imaging can provide in vivo assessment of the microvasculature in intracranial tumors. The aim of the present study was to evaluate the diagnostic performance of dynamic contrast-enhanced MR imaging derived vascular permeability parameters, including the volume transfer constant, the volume of extravascular extracellular space, and the flux rate constant between the extravascular extracellular space and plasma, for the differentiation of primary CNS lymphoma and glioblastoma. MATERIALS AND METHODS Sixty glioblastomas and 11 primary central nervous system lymphomas were included. Pretreatment T1-weighted dynamic contrast-enhanced MR imaging with a 3D T1-weighted spoiled gradient-echo sequence was performed on a 3T MR imaging scanner. Perfusion parameters (volume transfer constant, the volume of extravascular extracellular space, and the flux rate constant) were measured on the basis of the Tofts-Kernmode model. The Mann-Whitney U test and receiver operating characteristic analysis were used to compare those parameters between primary central nervous system lymphoma and glioblastoma. Histopathologic correlation of dynamic contrast-enhanced MR imaging findings was performed by using reticulin staining and CD31 immunohistochemistry. RESULTS Median volume transfer constant and flux rate constant values were significantly higher in primary central nervous system lymphoma (0.145 ± 0.057 and 0.396 ± 0.088) than in glioblastoma (0.064 ± 0.021 and 0.230 ± 0.058) (P < .001, respectively). Median volume of extravascular extracellular space values did not differ significantly between primary central nervous system lymphoma (0.434 ± 0.165) and glioblastoma (0.319 ± 0.107). On receiver operating characteristic analysis, volume transfer constant had the best discriminative value for differentiating primary central nervous system lymphoma and glioblastoma (threshold, 0.093; sensitivity, 90.9%; specificity, 95.0%). Histopathologic evaluation revealed intact vascular integrity in glioblastoma despite endothelial proliferation, whereas primary central nervous system lymphoma demonstrated destroyed vessel architecture, thereby promoting vascular disintegrity. CONCLUSIONS Primary central nervous system lymphoma demonstrated significantly higher volume transfer constant and flux rate constant values compared with glioblastoma, implying a higher vascular permeability in primary central nervous system lymphoma. These findings confirm initial observations from perfusion CT and dynamic contrast-enhanced MR imaging studies, correlating with underlying histopathologic features, and may be useful in distinguishing primary central nervous system lymphoma from glioblastoma.
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Antoch G, Barkhausen J, Düber C, Epsch R, Heindel W, Krombach G, Maintz D, Schlemmer HP, Schönberg S, Wigge P. White paper: clinical studies in radiology. ROFO-FORTSCHR RONTG 2014; 186:451-7. [PMID: 24764210 DOI: 10.1055/s-0034-1366394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Radbruch A, Paech D, Windschuh J, Meissner JE, Schlemmer HP, Bachert P, Ladd M, Bendszus M. Three-dimensional Chemical Exchange Saturation Transfer (CEST) Imaging at 7 Tesla in Glioblastoma Patients. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1373350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Kurz F, Kampf T, Heiland S, Bendszus M, Schlemmer HP, Ziener C. T2 Spin-Echo-Relaxation von magnetisch markierten Zellen und Eisenoxid-Agglomerationen. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1373137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Kurz F, Kampf T, Heiland S, Bendszus M, Schlemmer HP, Ziener C. Variation der CPMG Inter-Echo-Zeit und Quantifizierung von Kapillardurchmesser in Muskelgewebe. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1373292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Simons D, Uhrig M, Sassenberg A, Breithaupt M, Berger M, Yen K, Schlemmer HP. Experimentelle 7 Tesla MRT basierte innovative Blutungsdetektion in der Rechtsmedizin. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1373567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Kueres R, Flach B, Kuntz J, Schlemmer HP, Kachelrieß M, Bartling S. Entwicklung der 4D (3D + Zeit) Interventionsführung mittels Kegelstrahl-CT für Organbereiche mit physiologischer Bewegung. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1372789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Schlemmer HP. Prä-interventionelle Prostata-Diagnostik (Zertifizierung: Modul C/D Spezialkurs). ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1373032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Schlemmer HP. Methoden des radiologischen Therapiemonitorings: WHO, RECIST, Choi usw. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1373367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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