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871.
Embolic protection in patients undergoing transaortic transcatheter aortic valve replacement: initial experience with the TriGuard HDH embolic deflection device
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872.
Catharina M. L. Zegers Frank J. P. Hoebers Wouter van Elmpt Judith A. Bons Michel C. Öllers Esther G. C. Troost Daniëlle Eekers Leo Balmaekers Marlies Arts-Pechtold Felix M. Mottaghy Philippe Lambin 《European journal of nuclear medicine and molecular imaging》2016,43(12):2139-2146
Background and purpose
Increased tumour hypoxia is associated with a worse overall survival in patients with head and neck squamous cell carcinoma (HNSCC). The aims of this study were to evaluate treatment-associated changes in [18F]HX4-PET, hypoxia-related blood biomarkers, and their interdependence.Material and methods
[18F]HX4-PET/CT scans of 20 patients with HNSCC were acquired at baseline and after ±20Gy of radiotherapy. Within the gross-tumour-volumes (GTV; primary and lymph nodes), mean and maximum standardized uptake values, the hypoxic fraction (HF) and volume (HV) were calculated. Also, the changes in spatial uptake pattern were evaluated using [18F]HX4-PET/CT imaging. For all patients, the plasma concentration of CAIX, osteopontin and VEGF was assessed.Results
At baseline, tumour hypoxia was detected in 69 % (22/32) of the GTVs. During therapy, we observed a significant decrease in all image parameters. The HF decreased from 21.7?±?19.8 % (baseline) to 3.6?±?10.0 % (during treatment; P?<?0.001). Only two patients had a HV?>?1 cm3 during treatment, which was located for >98 % within the baseline HV. During treatment, no significant changes in plasma CAIX or VEGF were observed, while osteopontin was increased.Conclusions
[18F]HX4-PET/CT imaging allows monitoring changes in hypoxia during (chemo)radiotherapy whereas the blood biomarkers were not able to detect a treatment-associated decrease in hypoxia.873.
USPIO‐enhanced 3D‐cine self‐gated cardiac MRI based on a stack‐of‐stars golden angle short echo time sequence: Application on mice with acute myocardial infarction
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874.
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876.
Valerie de Haas MD PhD Ch. Michel Zwaan MD PhD Ursula Creutzig MD PhD Gertjan L. Kaspers MD PhD 《Pediatric blood & cancer》2016,63(8):1457-1460
We evaluated the in vitro glucocorticoid (GC) responsiveness of 117 pediatric acute myeloid leukemia cells by considering GC resistance, GC‐induced proliferation, and GC‐induced differentiation. None of the samples was highly GC sensitive, and only 15% were intermediately sensitive. GC‐induced differentiation was not observed, while GC‐induced proliferation was observed in 27% of the samples. Samples with French‐American‐British classification (FAB) type M5 or activating Fms‐like tyrosine kinase 3 (FLT3) mutations were significantly more prone to this phenomenon. Although we could not confirm this in our study, if induced proliferation in vitro is paralleled in vivo, GCs during consolidation may have adverse effects on minimal residual leukemic cells, which might increase relapse risk. 相似文献
877.
Prevalence of Symptomatic and Asymptomatic Thrombosis in Pediatric Oncology Patients With Tunneled Central Venous Catheters
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Reineke A. Schoot MD PhD Marianne D. van de Wetering MD PhD Theo Stijnen PhD Wim J.E. Tissing MD PhD Erna Michiels MD PhD Floor C.H. Abbink MD PhD Martine F. Raphael MD Hugo A. Heij MD PhD Michel Zwaan MD PhD Jan A. Lieverst MSc Hubert N. Caron MD PhD Heleen van Ommen MD PhD 《Pediatric blood & cancer》2016,63(8):1438-1444
878.
879.
Miriam Michel Jana Logoteta Andreas Entenmann Jan Hinnerk Hansen Inga Voges Hans-Heiner Kramer Colin Petko 《Pediatric cardiology》2016,37(7):1250-1257
Accurate assessment of ventricular function is particularly important in children with hypoplastic left heart syndrome (HLHS) after completion of the total cavopulmonary connection (TCPC). For this purpose, two-dimensional speckle tracking (2DST) is a promising technique as it does not depend on the angle of insonation or the geometry of the ventricle. The objective of this study was to assess changes in systolic and diastolic right ventricular (RV) function within a 5-year follow-up period of HLHS patients after TCPC using conventional and 2DST echocardiography. RV fractional area change (RVFAC), tricuspid annular plane systolic excursion (TAPSE), E/A, E/e′ and 2DST parameters [global longitudinal peak systolic strain (GS) and strain rate (GSRs), global strain rate in early (GSRe) and late (GSRa) diastole] of 40 HLHS patients were compared at 1.6 and at 5.1 years after TCPC. RVFAC, E/A, E/e′ and GS did not change, whereas TAPSE (13.7 ± 3.2 vs. 10.5 ± 2.4 mm/m2, p < 0.001), GSRs (?1.56 ± 0.28 vs. ?1.35 ± 0.31 1/s, p < 0.001), GSRe (2.22 ± 0.49 vs. 1.96 ± 0.44 1/s, p = 0.004) and GSRa (1.19 ± 0.39 vs. 0.92 ± 0.39 1/s, p < 0.001) decreased significantly. Systolic and diastolic RV function parameters of HLHS patients decreased from 1.6 to 5.1 years after TCPC in our patients. Changes in global strain rate parameters may be signaling early RV dysfunction that is not detectable by traditional echocardiography. Further study is needed to verify this and to determine whether these changes are clinically relevant. 相似文献
880.
Murali Mahadevan FRACS Graeme van der Meer MBChB MMed Maayan Gruber MD Peter Reed DPhil Conor Jackson FRCS Colin Brown FRACS Nikki Mills FRACS Lesley J. Salkeld FRACS FRCSC Dip ABO Michel Neeff FRACS Jan Evans MBChB Brian Anderson PhD FANZCA FJFICM Colin Barber FRACS 《The Laryngoscope》2016,126(12):E416-E420