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不同正相位与反相位回波时间对肾上腺肿瘤定量分析作用的初步研究

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国际医学放射学杂志 2008年第5期31卷 391-391页

作者： S.T.Schindera B.J.Soher D.M.Delong B.M.Dale E.M.Merkle 唐光健 department of radiology Duke University Medical Center Duke North Room 1417 Erwin Rd Durham NC 27710 USA.

目的确定3．0TMRI正相位（IP）与反相位（OP）中两对回波时间（TE）在（a）前瞻性定量分析模型研究与（b）回顾性肾上腺肿瘤诊断准确性临床研究中的作用。在临床研究中采用不同的参考标准。方法采用脂肪一生理盐水模型进行3．0TMRI的IP... 详细信息

目的确定3．0TMRI正相位（IP）与反相位（OP）中两对回波时间（TE）在（a）前瞻性定量分析模型研究与（b）回顾性肾上腺肿瘤诊断准确性临床研究中的作用。在临床研究中采用不同的参考标准。方法采用脂肪一生理盐水模型进行3．0TMRI的IP与0P扫描，以分析不同脂肪分数。学院医学伦理委员会批准此项符合HIPAA要求的研究，病人均填写知情同意书。对21例病人（男14例，女7例，平均年龄63岁）的23个肾上腺肿瘤（16个腺瘤，6个转移瘤，

关键词：肾上腺肿瘤定量分析回波时间反相位医学伦理委员会临床研究诊断准确性 HIPAA

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3D-FSE-Cube各向同性MRI应用于健康志愿者踝关节的初步经验

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国际医学放射学杂志 2009年第1期32卷 80-80页

作者： K.J. Stevens R.F. Busse E. Han A.C. Brau P.J. Beatty C.F. Beaulieu 胡鹏 department of radiology Stanford University Medical Center 300 Pasteur Dr Room S-062A Stanford CA 94305 USA

本项前瞻性研究的目的是比较一种新型的由并行成像及扩展回波链长采集的各向同性三维（3D）快速自旋回波（FSE）脉冲序列（3D-FSE-Cube）与常规二维（2D）FSE序列采集的踝关节MR影像。本研究遵从HIPAA并通过了伦理委员会审核，获得受试... 详细信息

本项前瞻性研究的目的是比较一种新型的由并行成像及扩展回波链长采集的各向同性三维（3D）快速自旋回波（FSE）脉冲序列（3D-FSE-Cube）与常规二维（2D）FSE序列采集的踝关节MR影像。本研究遵从HIPAA并通过了伦理委员会审核，获得受试者知情同意。对10名健康志愿者（4名男性，6名女性；年龄25～41岁）的踝关节进行MRI检查，

关键词：健康志愿者 MRI检查各向同性踝关节初步经验快速自旋回波 FSE序列伦理委员会

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Functional assessment of transplanted kidneys with magnetic resonance imaging

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World Journal of radiology 2015年第10期7卷 343-349页

作者： Yu-Ting Wang Ying-Chun Li Long-Lin Yin Hong Pu Jia-Yuan Chen department of radiology Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital

Kidney transplantation has emerged as the treatment of choice for many patients with end-stage renal disease, which is a significant cause of morbidity and mortality. Given the shortage of clinically available donor kidneys and the significant incidence of allograft dysfunction, a noninvasive and accurate assessment of the allograft renal function is critical for postoperative management. Prompt diagnosis of graft dysfunction facilitates clinical intervention of kidneys with salvageable function. New advances in magnetic resonance imaging(MRI) technology have enabled the calculation of various renal parameters that were previously not feasible to measure noninvasively. Diffusion-weighted imaging provides information on renal diffusion and perfusion simultaneously, with quantification by the apparent diffusion coefficient, the decrease of which reflects renal function impairment. Diffusion-tensor imaging accounts for the directionality of molecular motion and measures fractional anisotropy of the kidneys. Blood oxygen level-dependent MR evaluates intrarenal oxygen bioavailability, generating the parameter of R2*(reflecting the concentration of deoxyhemoglobin). A decrease in R2* could happen during acute rejection. MR nephro-urography/renography demonstrates structural data depicting urinary tract obstructions and functional data regarding the glomerular filtration and blood flow. MR angiography details the transplant vasculature and is particularly suitable for detecting vascular complications, with good correlation with digital subtraction angiography. Other functional MRI technologies, such as arterial spin labeling and MR spectroscopy, are showing additional promise. This review highlights MRI as a comprehensive modality to diagnose a variety of etiologies of graft dysfunction, including prerenal(e.g., renal vasculature), renal(intrinsic causes) and postrenal(e.g., obstruction of the collecting system) etiologies.

关键词： Magnetic resonance imaging Diffusionweighted imagi

Multimodality imaging in COVID-19 patients:A key role from diagnosis to prognosis

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World Journal of radiology 2020年第11期12卷 261-271页

作者： Antonello D'Andrea Juri Radmilovic Andreina Carbone Alberto Forni Ercole Tagliamonte Lucia Riegler Biagio Liccardo Fabio Crescibene Cesare Sirignano Giovanna Esposito Eduardo Bossone department of Cardiology Chair of Cardiology–Luigi Vanvitelli University–Monaldi Hospital-Association of Operating Room Nurses Ospedali Dei Colli–NaplesNaples 80131Italy department of Cardiology and Intensive Coronary Unit “Umberto I”HospitalNocera Inferiore 84014SalernoItaly department of Cardiology University of Campania“Luigi Vanvitelli”Monaldi HospitalNaples 80131Italy M.Scarlato COVID Hospital Scafati HospitalScafati 84018Italy Institute of Biostructures and Bioimaging of National Research Council National research CouncilNaples 80145Italy Division of Cardiology Cardarelli HospitalNaples 80131Italy

The integrated clinical,laboratory and ultrasound approach is essential for the diagnosis,evaluation and monitoring of the patient's therapy in coronavirus disease 2019 *** ideal imaging approach in this context is not yet well *** X-ray is characterized by low sensitivity in identifying earlier lung ***"bedside"pulmonary ultrasound has an undeniable series of advantages in the patient at high infectious risk and can provide incremental data in the respiratory intensive care for the serial control of the individual patient as well as for the home delivery of the stabilized *** computed tomography shows high sensitivity but should not be routinely performed in all patients,because in the first 48 h it can be absolutely negative and in the late phase the imaging findings may not change the therapeutic *** should be limited to patients with hemodynamic instability to assess ventricular function and pulmonary pressures.

关键词： COVID-19 Interstitial pneumonia Pulmonary computed tomography Echocardiography Lung ultrasound Thromboembolism

肢体严重缺血与间歇性跛行的CTA和对比增强MR血管成像诊断价值的系统综述与Meta分析

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国际医学放射学杂志 2014年第1期 89-89页

作者： S.Jens M.Koelemay J.Reekers S.Bipat 王亚 department of radiology Academic Medical Center Room G1229 Meibergdreef 9 1105 AZ Amsterdam The Netherlands S.Jens

目的评估CT血管成像(CTA)与对比增强MR血管成像(CE-MRA)检出肢体严重缺血(CLI)或间歇性跛行(IC)病人的动脉重度狭窄或闭塞血流动脉学的价值。方法

关键词： CTA MRA 外周动脉疾病肢体严重缺血间歇性跛行

Fortuitously discovered liver lesions

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World Journal of Gastroenterology 2013年第21期19卷 3173-3188页

作者： Christoph F Dietrich Malay Sharma Robert N Gibson Schreiber-Dietrich Christian Jenssen department of Internal Medicine Caritas-Krankenhaus Bad Mergentheim97980 Bad MergentheimGermany department of Gastroenterology Jaswantrai Speciality HospitalOpposite Sports StadiumMeerut UP 250001India department of radiology University of MelbourneRoyal Melbourne HospitalVictoria 3050Australia Dagmar department of Pediatrics Asklepiosklinik St. AugustinAbt. Neonatologie und P diatrische Intensivmedizin52757 AugustinGermany Klinik für Innere Medizin Krankenhaus Mrkisch Oderland15334 StrausbergGermany

The fortuitously discovered liver lesion is a common problem. Consensus might be expected in terms of its work-up, and yet there is none. This stems in part from the fact that there is no preventive campaign involving the early detection of liver tumors other than for patients with known liver cirrhosis and oncological patients. The work-up (detection and differential diagnosis) of liver tumors comprises theoretical considerations, history, physical examination, laboratory tests, standard ultrasound, Doppler ultrasound techniques, contrastenhanced ultrasound (CEUS), computed tomography and magnetic resonance imaging, as well as imageguided biopsy. CEUS techniques have proved to be the most pertinent method; these techniques became part of the clinical routine about 10 years ago in Europe and Asia and are used for a variety of indications in daily clinical practice. CEUS is in many cases the first and also decisive technical intervention for detecting and characterizing liver tumors. This development is reflected in many CEUS guidelines, e.g. , in the European Federation of Societies for Ultrasound in Medicine and Biology (EFSUMB) guidelines 2004, 2008 and 2012 as well as the recently published World Federation for Ultrasound in Medicine and Biology-EFSUMB guidelines 2012. This article sets out considerations for making a structured work-up of incidental liver tumors feasible.

关键词： Contrast-enhanced ultrasound Hepatocellular carcinoma Hemangioma Focal nodular hyperplasia Metastasis Ultrasonography Recommendations Guidelines

Aberrant celio-mesenteric supply of the splenic flexure:Provoking a bleed

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World Journal of Gastroenterology 2013年第39期19卷 6679-6682页

作者： Matthew Wu Darren Klass Evgeny Strovski Baljinder Salh David Liu Faculty of Medicine Dalhousie UniversityHalifaxNS B3H 4R2Canada department of radiology University of British ColumbiaVancouver General HospitalVancouverBC V6Z 3G2Canada department of Gastroenterology University of British ColumbiaVancouver General HospitalVancouverBC V6T 1Z4Canada

Lower gastrointestinal hemorrhage presents a common indication for hospitalization and account for over300000 admissions per year in the United *** imaging is often required to aid in localization of the hemorrhage prior to therapeutic intervention if endoscopic treatment *** includes computer tomography angiography,red blood cell tagged scintigraphy and conventional angiography,with scintigraphy being the most sensitive followed by computer tomography *** celio-mesenteric supply occurs in 2%of the population;however failure to identify this may result in failed endovascular *** tomography angiography is sensitive for arterial hemorrhage and delineates the anatomy,allowing the treating physician to plan an endovascular *** at the time of conventional angiography,the active bleed is not visualized,but the site of bleeding has been identified on computer tomography angiography,provocative angiography can be utilized in order to stimulate bleeding and subsequent targeted *** describe a case of lower gastrointestinal hemorrhage at the splenic flexure supplied by a celiomesenteric branch in a patient and provocative angiography with tissue plasminogen activator utilized at the time of treatment to illicit the site of hemorrhage and subsequent treatment.

关键词： Hemorrhage Mesenteric arteries Colon transverse Thrombolytic therapy Embolization therapeutic Computer tomography

双源CT冠状动脉成像:最佳时间窗及心率对影像质量与放射剂量的影响

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国际医学放射学杂志 2008年第A6期31卷 484-484页

作者： A.C.Weustink N.R.Mollet F.Pugliese W.B.Meijboom K.Nieman M.H.Heijenbrok-Kal 郑丽丽 department of radiology Erasmus Medical Center PO Box2040Room Hs2183000CA RotterdamThe Netherlands.

目的探讨可疑冠心病病人心电周期中最佳时间窗与心率、影像质量及放射剂量的关系。材料与方法本研究经伦理审查委员会通过,并获得所有病人知情同意。

关键词：放射剂量 CT 影像质量可疑冠心病知情同意图像质量舒张末期数据集窗宽

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PC-VIPR-MRA无创性评估猪肾动脉狭窄狭窄段前后压力差

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国际医学放射学杂志 2011年第6期 594-594页

作者： T.A.Bley K.M.Johnson C.J.Francois S.B.Reeder M.L.Schiebler B.R.Landgraf 王焕军 department of radiology University of Wisconsin School of Medicine and Public Health1111 Highland AveRoom 1127 WIMRMadisonWI 53705-2275

目的比较经无创性高空间和时间分辨率4DMR血流测量得到的狭窄段前后压力梯度(TSPG)和有创性DSA血管内压力测量导线测量的TSPG。材料与方法经过动物保护和使用委员会的批准,手术制作猪双侧肾动脉狭窄(RAS)模型。采用临床应用的1.5TMR系... 详细信息

目的比较经无创性高空间和时间分辨率4DMR血流测量得到的狭窄段前后压力梯度(TSPG)和有创性DSA血管内压力测量导线测量的TSPG。材料与方法经过动物保护和使用委员会的批准,手术制作猪双侧肾动脉狭窄(RAS)模型。采用临床应用的1.5TMR系统行肾动脉呼

关键词：肾动脉狭窄狭窄段 DSA 动脉疾病 MRA PC-VIPR-MRA TSPG 无创性