|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Correlation analysis of dual-energy CT iodine maps with quantitative pulmonary perfusion MRI显示文摘AIM:To correlate dual-energy computed tomography(DECT) pulmonary angiography derived iodine maps with parameter maps of quantitative pulmonary perfusion magnetic resonance imaging(MRI).METHODS:Eighteen patients with pulmonary perfusion defects detected on DECT derived iodine maps were included in this prospective study and additionally underwent time-resolved contrast-enhanced pulmonary MRI [dynamic contrast enhanced(DCE)-MRI].DCE-MRI data were quantitatively analyzed using a pixel-by-pixel deconvolution analysis calculating regional pulmonary blood flow(PBF),pulmonary blood volume(PBV) and mean transit time(MTT) in visually normal lung parenchyma and perfusion defects.Perfusion parameterswere correlated to mean attenuation values of normal lung and perfusion defects on DECT iodine maps.Two readers rated the concordance of perfusion defects in a visual analysis using a 5-point Likert-scale(1 = no correlation,5 = excellent correlation).RESULTS:In visually normal pulmonary tissue mean DECT and MRI values were:22.6 ± 8.3 Hounsfield units(HU);PBF:58.8 ± 36.0 mL/100 mL per minute;PBV:16.6 ± 8.5 mL;MTT:17.1 ± 10.3 s.In areas with restricted perfusion mean DECT and MRI values were:4.0 ± 3.9 HU;PBF:10.3 ± 5.5 mL/100 mL per minute,PBV:5 ± 4 mL,MTT:21.6 ± 14.0 s.The differences between visually normal parenchyma and areas of restricted perfusion were statistically significant for PBF,PBV and DECT(P < 0.0001).No linear correlation was found between MRI perfusion parameters and attenuation values of DECT iodine maps(PBF:r = 0.35,P = 0.15;PBV:r = 0.34,P = 0.16;MTT:r = 0.41,P = 0.08).Visual analysis revealed a moderate correlation between perfusion defects on DECT iodine maps and the parameter maps of DCE-MRI(mean score 3.6,k 0.45).CONCLUSION:There is a moderate visual but not statistically significant correlation between DECT iodine maps and perfusion parameter maps of DCE-MRI. | Jan Hansmann Paul Apfaltrer Frank G Zoellner Thomas Henzler Mathias Meyer Gerald Weisser Stefan O Schoenberg Ulrike I Attenberger | 2013 | World Journal of Radiology2013，5，5： | 6 |
| 2 | Orthotopic liver transplantation for giant liver haemangioma: A case report显示文摘In liver haemangiomas, the risk of complication rises with increasing size, and treatment can be obligatory. Here we present a case of a 46-year-old female who suffered from a giant haemangioma causing severe portal hypertension and vena cava compression, leading to therapy refractory ascites, hyponatremia and venostasis-associated thrombosis with pulmonary embolism. The patients did not experience tumour rupture or consumptive coagulopathy. Surgical resection was impossible because of steatosis of the non-affected liver. Orthotopic liver transplantation was identified as the only treatment option. The patient's renal function remained stable even though progressive morbidity and organ allocation were improbable according to the patient's lab model for end-stage liver disease(lab MELD) score. Therefore, non-standard exception status was approved by the European organ allocation network 'Eurotransplant'. The patient underwent successful orthotopic liver transplantation 16 mo after admission to our centre. Our case report indicates the underrepresentation of morbidity associated with refractory ascites in the lab MELD-based transplant allocation system, and it indicates the necessity of promptly applying for non-standard exception status to enable transplantation in patients with a severe clinical condition but low lab MELD score. Our case highlights the fact that liver transplantation should be considered early in patients with non-resectable, symptomatic benign liver tumours. | Undine G Lange Julian N Bucher Markus B Schoenberg Christian Benzing Moritz Schmelzle Tanja Gradistanac Steffen Strocka Hans-Michael Hau Michael Bartels | 2015 | World Journal of Transplantation2015，5，4： | 6 |
| 3 | Feasibility study of computed vs measured high b-value(1400 s/mm2) diffusion-weighted MR images of the prostate显示文摘AIM: To evaluate the impact of computed b = 1400 s/mm2(C-b1400) vs measured b = 1400 s/mm2(M-b1400) diffusion-weighted images(DWI) on lesion detection rate, image quality and quality of lesion demarcation using a modern 3T-MR system based on a small-field-of-view sequence(sFOV). METHODS: Thirty patients(PSA: 9.5 ± 8.7 ng/mL; 68 ± 12 years) referred for magnetic resonance imaging(MRI) of the prostate were enrolled in this study. All measurements were performed on a 3T MR system.For DWI, a single-shot EPI diffusion sequence(b = 0, 100, 400, 800 s/mm2) was utilized. C-b1400 was cal-culated voxelwise from the ADC and diffusion images. Additionally, M-b1400 was acquired for evaluation and comparison. Lesion detection rate and maximum lesion diameters were obtained and compared. Image quality and quality of lesion demarcation were rated accord-ing to a 5-point Likert-type scale. Ratios of lesion-to-bladder as well as prostate-to-bladder signal intensity(SI) were calculated to estimate the signal-to-noise-ratio(SNR). RESULTS: Twenty-four lesions were detected on M-b1400 images and compared to C-b1400 images. C-b1400 detected three additional cancer suspicious lesions. Overall image quality was rated significantly better and SI ratios were significantly higher on C-b1400(2.3 ± 0.8 vs 3.1 ± 1.0, P < 0.001; 5.6 ± 1.8 vs 2.8 ± 0.9, P < 0.001). Comparison of lesion size showed no significant differences between C- and M-b1400(P = 0.22). CONCLUSION: Combination of a high b-value extrap-olation and sFOV may contribute to increase diagnostic accuracy of DWI without an increase of acquisition time, which may be useful to guide targeted prostate biopsies and to improve quality of multiparametric MRI(mMRI) especially under economical aspects in a pri-vate practice setting. | Leonardo K Bittencourt Ulrike I Attenberger Daniel Lima Ralph Strecker Andre de Oliveira Stefan O Schoenberg Emerson L Gasparetto Daniel Hausmann | 2014 | World Journal of Radiology2014，6，6： | 5 |
| 4 | 中国六城市多种危险因素对脑血管病影响的分析(病例—对照研究)显示文摘本文对我国六城市神经系病流调发现的脑血管病(CVD)435例进行了病例及对照多种危险因素影响分析。系在单因素分析基础上用 Logistic 逐步回归方法。结果说明高血压史为各类 CVD 的最危险因素,CVD 家族史、糖尿病史、过食咸食、心脏病史分别为所有 CVD、脑梗塞、出血性 CVD、TIA 的主要危险因素。 | 欧阳珊 王可嘉 Schoenberg BS Dambrosia JM Price TR 李世绰 王忠诚 程学铭 | 1991 | 中风与神经疾病杂志1991，8，3： | 4 |
| 5 | Potoconductive semiconductor switches used for ultra-wideband, high-power microwave generation显示文摘 | BURGER J W SCHOENBERG J S H TYO J S | 1997 | SPIE1997，3158，： | 2 |
| 6 | Black-Blood Diffusion-Weighted EPI Acquisition of the Liver with Parallel Imaging: Comparison with a Standard T2-Weighted Sequence for Detection of Focal Liver Lesions显示文摘 | Christoph J. Zech Karin A. Herrmann Olaf Dietrich Wilhelm Horger Maximilian F. Reiser Stefan O. Schoenberg | 2008 | Investigative Radiology2008，，4： | 2 |
| 7 | Dexmedetomidine Infusion for Analgesia and Prevention of Emergence Agitation in Children with Obstructive Sleep Apnea Syndrome Undergoing Tonsillectomy and Adenoidectomy显示文摘 | Anuradha Patel Melissa Davidson Minh C. J. Tran Huma Quraishi Catherine Schoenberg Manasee Sant Albert Lin Xiuru Sun | 2010 | Anesthesia & Analgesia2010，，4： | 2 |
| 8 | Diagnostic Performance and Description of Morphological Features of Focal Nodular Hyperplasia in Gd-EOB-DTPA-Enhanced Liver Magnetic Resonance Imaging: Results of a Multicenter Trial显示文摘 | Christoph J. Zech Luigi Grazioli Josy Breuer Maximilian F. Reiser Stefan O. Schoenberg | 2008 | Investigative Radiology2008，，7： | 2 |
| 9 | A Functional Polymorphism of Toll-Like Receptor 4 Gene Increases Risk of Gastric Carcinoma and Its Precursors显示文摘 | Georgina L. Hold Charles S. Rabkin Wong–Ho Chow Malcolm G. Smith Marilie D. Gammon Harvey A. Risch Thomas L. Vaughan Kenneth E.L. McColl Jolanta Lissowska Witold Zatonski Janet B. Schoenberg William J. Blot N. Ashley G. Mowat Joseph F. Fraumeni Emad M. El | 2007 | Gastroenterology2007，，3： | 2 |
| 10 | Iron and lithium isotope systematics of the Hekla volcano, Iceland-Evidence for Fe isotope fractionation during magma differentiation显示文摘 | SCHUESSLER J A SCHOENBERG R SIGMARSSON O | 2009 | Chemical Geology2009，258，12： | 1 |
| 11 | Elastic wave propagation in media with parallel fractures and aligned cracks 显示文摘 | Schoenberg M Douma J | 1988 | Geophysical Prospecting1988，36，6： | 1 |
| 12 | Management of sterile necrosis in instances of severe acute pancreatitis显示文摘 | Pralle U Schoenberg MH | 1995 | J Am Coll Surg1995，181，： | 1 |
| 13 | Elastic wave propagation in media with parallel fractures and aligned cracks显示文摘 | Schoenberg M Douma J | 1988 | Geophysics Prospecting1988，36，： | 1 |
| 14 | Elastic wave behavior across linear slip interfaces显示文摘 | Schoenberg M | 1980 | The Journal of the Acoustical Society of America1980，68，5： | 1 |
| 15 | Mechanism and role of trypsinogen activation in acute pancreatitis显示文摘 | Mayer J Rau B Schoenberg MH | 1999 | Hepatogastroenterology1999，46，： | 1 |
| 16 | High-spatial-resolution MR angiography of renal arteries with integrated parallel acquisitions:comparison with digital subtraction angiography and US显示文摘 | Schoenberg SO Rieger J Weber CH | 2005 | Radiology2005，235，： | 1 |
| 17 | Photoconductive semi-conductor switches used for ultra-wideband显示文摘 | Burger J W Schoenberg J S H Tyo J S | 1997 | High-power Microwave Generation SPIE1997，31，58： | 1 |
| 18 | Ultra-Wideband Source Using Gallium Arsenide Photoconductive Semiconductor Switches显示文摘 | Schoenberg Jon S H Burger Jeffrey W Tyo J Scott | 1997 | Transactions on Plasma Science1997，25，2： | 1 |
| 19 | Conversion of coal toacetylene in arc-heated hydrogen 显示文摘 | Gannon R E Krukonis V J Schoenberg T | 1970 | Industrial & EngineeringChemistry Product Research and Development1970，9，3： | 1 |
| 20 | Artifacts in 3-T MRI:physical background and reduction strategies显示文摘 | Dietrich O Reiser MF Schoenberg SO | 2008 | Euro J Radiol2008，65，1： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员