检索结果-南通市图书馆

thoracic hydatid disease:A radiologic review of unusual cases

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2020年第7期8卷 1203-1212页

作者： Mnahi Bin Saeedan Ibtisam Musallam Aljohani Khalefa Ali Alghofaily Shukri Loutfi Subha Ghosh Department of Radiology King Faisal Specialist Hospital and Research CenterKing Faisal Specialist Hospital and Research CenterRiyadh 11211Saudi Arabia Medical imaging Department Qassim UniversityCollege of MedicineBuraydah 52571Saudi Arabia Medical imaging Department Chest Radiology SectionKing Abdulaziz Medical CityRiyadh 12746Saudi Arabia imaging Institute Section of Thoracic ImagingCleveland ClinicClevelandOH 44195United States

Hydatid disease or echinococcosis is a zoonotic parasitic *** lung is the second most commonly affected organ after the ***-thoracic and extrapulmonary hydatid disease is uncommon and may involve the pleura,mediastinum,heart,diaphragm,and chest *** locations or complications of thoracic hydatid disease may pose a diagnostic *** present imaging findings of cases with unusual location and presentations of thoracic hydatid disease with emphasis on their clinical implications.

关键词： Hydatid thoracic Cysts imaging Unusual Extra-pulmonary

Spontaneous pneumothorax in a single lung transplant recipient-a blessing in disguise: A case report

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2020年第14期8卷 3031-3038页

作者： Himanshu Deshwal Subha Ghosh Kathleen Hogan Olufemi Akindipe Charles Randall Lane Atul C Mehta Division of Pulmonary Critical Care and Sleep MedicineNew York University Grossman School of MedicineNew YorkNY 10016United States imaging Institute Section of Thoracic ImagingCleveland ClinicClevelandOH 44195United States Respiratory Institute Cleveland ClinicClevelandOH 44195United States

BACKGROUND End-stage chronic obstructive pulmonary disease(COPD)is one of the common lung diseases referred for lung *** to the international society of heart and lung transplantation,30%of all lung transplantations are carried out for COPD *** compared to bilateral lung transplant,singlelung transplant(SLT)has similar short-term and medium-term results for *** patients with severe upper lobe predominant emphysema,lung volume reduction surgery is an excellent alternative which results in improvement in functional status and long-term *** 2018,endobronchial valves were approved by the Food and Drug Administration for severe upper lobe predominant emphysema as they demonstrated improvement in lung function,exercise capacity,and quality of ***,the role of endobronchial valves in native lung emphysema in SLT patients has not been *** SUMMARY We describe an unusual case of severe emphysema who underwent a successful SLT 15 years ago and had gradual worsening of lung function suggestive of chronic lung allograft ***,her lung function improved significantly after a spontaneous pneumothorax of the native lung resulting in auto-deflation of large *** This case highlights the clinical significance of native lung hyperinflation in single lung transplant recipient and how spontaneous decompression due to pneumothorax led to clinical improvement in our patient.

关键词： Native lung hyperinflation Single lung transplant Pneumothorax Bronchoscopic lung volume reduction Endobronchial valve Case report

Multimodality imaging in the diagnosis and management of prosthetic valve endocarditis:A contemporary narrative review

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Cardiology 2021年第8期13卷 254-270页

作者： Saberio Lo Presti Tarec K Elajami Mohammad Zmaili Reza Reyaldeen Bo Xu Advanced Cardiac imaging Fellows Sydell and Arnold Miller Family Heart Vascular and Thoracic Institute at Cleveland ClinicClevelandOH 44195United States Department of Cardiology Mount Sinai Medical CenterMiami BeachFL 33140United States Department of Internal Medicine Cleveland Clinic FoundationClevelandOH 44195United States section of Cardiovascular imaging in the Robert and Suzanne Tomsich Department of Cardiovascular MedicineSydell and Arnold Miller Family Heart Vascular and Thoracic Institute at Cleveland ClinicClevelandOH 44195United States

Infective endocarditis is one of the leading life-threatening infections around the *** the exponential growth in the field of transcatheter interventions and advances in specialized surgical techniques,the number of prosthetic valves and cardiac implantable devices has significantly *** has led to a steep rise in the number of cases of prosthetic valve endocarditis(PVE)comprising up to 30%of all *** guidelines rely on the use of the modified Duke criteria;however,the diagnostic sensitivity of the modified Duke criteria is reduced in the context of *** is in part attributed to prosthesis related artifact which greatly affects the ability of echocardiography to detect early infective changes related to PVE in certain *** has been increasing recognition of the roles of complementary imaging modalities and updates in international society *** diagnosis and treatment can prevent the devastating consequences of this *** modalities such as cardiac computed tomography and 18-fluorodeoxyglucose positron emission tomography/computed tomography are diagnostic tools that provide a complementary role to echocardiography in aiding diagnosis,pre-operative planning,and treatment decisionmaking process in these challenging *** the strengths and limitations of these adjuvant imaging modalities is crucial for the implementation of appropriate imaging modalities in clinical practice.

关键词： Prosthetic valve endocarditis Multimodality cardiac imaging echocardiography Cardiac computed tomography 18-fluorodeoxyglucose photon emission tomography/computed tomography

Intravascular contrast agents in diagnostic applications： Use of red blood cells to improve the lifespan and efficacy of blood pool contrast agents

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2017年第3期10卷 731-766页

作者： Antonella Antonelli Carla Sfara Mauro Magnani Department of Biomolecular Sciences Biochemistry and Molecular Biology Section University of Urbino 'Carlo Bo' Via Saffi 2 61029Urbino (PU) Italy

In medicine, discrimination between pathologies and normal areas is of great importance, and in most cases, such discrimination is made possible by novel imaging technologies. Numerous modalities have been developed to visualize tissue vascularization in cardiovascular diseases or during angiogenic and vasculogenic processes. Here, we report the recent advances in vasculature imaging, providing an overview of the current non-invasive approaches in biomedical diagnostics and potential future strategies for prognostic assessment of vessel diseases, such as aneurysms and coronary artery occlusion leading to myocardial infarction. There are several contrast agents （CAs） available to improve the visibility of specific tissues at the early stage of diseases, allowing for rapid treatment. However, CAs are also hampered by numerous limitations, including rapid diffusion from blood vessels into the interstitial space, toxicity, and low sensitivity. Extravasation from blood vessels leads to a rapid loss of the image. If the contrast medium can fully be confined to the vascular space, high-resolution structural and functional vascular imaging could be obtained. Many scientists have contributed new materials and/or new carrier systems. For example, the use of red blood cells （RBCs） as CA-delivery systems appears to provide a scalable alternative to current procedures that allows adequate vascular imaging. Recognition and removal of CAs from the circulation can be prevented and/or delayed by using RBCs as biomimetic CA-carriers, and this technology should be clinically validated.

关键词： diagnostic applications magnetic resonanceimaging (MRI) vascular contrast agents red blood cells medical imaging new tomography

Unusual fistulas and connections in the cardiovascular system: A pictorial review

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Radiology 2014年第5期6卷 169-176页

作者： Abed Ghour Prabhakar Rajiah Cardiothoracic imaging section Department of Radiology University Hospitals of Cleveland Case Medical Center Case Western Reserve University School of Medicine Cleveland OH 44106 United States

A fistula is an abnormal vascular connection leading to diversion of blood from a high resistance arterial circuit to low resistance venous circuit. Coronary artery fistulas are abnormal communications of the coronary artery with a chamber of the heart, or with any segment of systemic or pulmonary circulation, bypassing the myocardial capillaries. Other unusual fistulas include connection between aorta and the right atrium/superior vena cava, aorta and the inferior vena cava or between a coronary artery bypass graft and a cardiac vein. Abnormal connections also include origin of the coronary artery from the pulmonary artery. In this article, we review the imaging, particularly computed tomography and magnetic resonance imaging of unusual fistulas and connections involving the cardiovascular system, particularly the coronary arteries and the aorta.

关键词： Coronary Artery Fistula

Automatic Measurement of Fetal Abdominal Biometric Parameters—Feasibility on a Portable Ultrasound Device

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Obstetrics and Gynecology 2017年第8期7卷 922-936页

作者： Naiad Hossain Khan Eva Tegnander Sigurd Storve Johan Morten Dreier Sturla Eik-Nes Hans Torp Gabriel Kiss ISB MI Lab and Department of Circulation and Medical Imaging Norwegian University of Science and Technology (NTNU) Trondheim Norway National Center for Fetal Medicine St. Olavs University Hospital Trondheim Norway Department of Clinical and Molecular Medicine Norwegian University of Science and Technology (NTNU) Trondheim Norway

An automatic method for measuring the fetal mean abdominal diameter (MAD) or abdominal circumference (AC) with ultrasound is proposed. From a correctly presented abdominal section suitable for MAD or AC measurement, the location of fetal abdomen is detected by image processing. Thereafter, an active contour model is converged along the abdominal boundary for measurement purposes. The validation data set contained 310 images of fetuses with gestational age (GA) from 14 to 41 weeks. The measurement success rate was 88.1%. By manually indicating the location of the abdomen, the success rate was further improved to 95.8% for the failed cases. The correlation between manual and automatic measurements was 0.95 and the intraclass correlation coefficient (ICC) was 0.976 (95% confidence interval (CI);0.969 - 0.981). The average method execution time was 0.3 s. The mean error was lower in young fetuses (0.4%) than in older fetuses (-2.1%). The proposed cross-platform method was implemented on a portable, low-cost ultrasound machine prototype targeted for low- and middle-income countries (LMIC);the results achieved were comparable to those of other state-of-the-art automatic methods.

关键词： Portable Ultrasound Scanner Automatic Measurement Mean Abdominal Diameter Abdominal Circumference Prenatal Ultrasound ICT4D

Automatic Detection and Measurement of Fetal Biparietal Diameter and Femur Length —Feasibility on a Portable Ultrasound Device

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Obstetrics and Gynecology 2017年第3期7卷 334-350页

作者： Naiad Hossain Khan Eva Tegnander Johan Morten Dreier Sturla Eik-Nes Hans Torp Gabriel Kiss Department of circulation and Medical imaging (ISB MI Lab) Norwegian University of Science and Technology Trondheim Norway National Center for Fetal Medicine St. Olavs Hospital Trondheim Norway Department of Laboratory Medicine Children’s and Women’s Health Norwegian University of Science and Technology Trondheim Norway

An automatic method able to recognize a presented section through the biparietal plane of the fetal head and a section through the fetal femur in ultrasound images is developed. Once the correct anatomical section for measurement is identified by the machine, the placement of the measurement calipers is automatically determined by fitting an active contour model to the structure of interest. The fetal biparietal diameter (BPD) and femur length (FL) are then measured automatically. The validation data set contained 167 and 197 B-mode images for BPD and FL measurements, respectively. The images were acquired using 4 different ultrasound scanners, which resulted in varied image quality and gain settings. The mean gestational age (GA) of the fetuses was 19.4 weeks, range 16 to 41 weeks. A measurement success rate of 90% was achieved for both BPD and FL. The correlation coefficients between the manual and automatic measurements were 0.995 (BPD) and 0.967 (FL), mean errors were 0.5 mm (BPD) and -1.7 mm (FL) and error range with 95% confidence interval (CI) were ﹣3.8 - 4.8 mm (BPD) and ﹣11.4 - 8.1 mm (FL). The automatic measurement results were consistent in both high and low gain settings. The intraclass correlation coefficients between manual and automatic measurements were 0.995 (95% CI;0.981 - 0.999) for BPD in high gain, 1.0 (95% CI;0.998 - 1.0) for BPD in low gain, 0.998 (95% CI;0.991 - 0.999) for FL in high gain and 0.999 (95% CI;0.996 - 1.0) for FL in low gain settings. The method was implemented on a prototype, portable ultrasound machine designed to be used in low- and middle-income countries (LMIC). The overall performance of the method supports our hypothesis that automated methods can be used and are beneficial in a clinical setting.

关键词： Fetal Dating Biparietal Diameter Femur Length Portable Ultrasound Machine Automatic Measurement

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

高分辨力MDCT检出高传染性的肺结核病灶

国际医学放射学杂志 2010年第6期 583-583页

作者： J.J.Yeh S.Hsieh T.Lee 冯杰 section of thoracic and circulation imaging Department of RadiologyKaohsiung Veterans General HospitalNo.386Ta-Chung 1st RoadKaohsiungTaiwan 813Republic of China

目的探讨MDCT的表现特征能否预测高传染性、涂片阳性的活动性肺结核病灶。材料与方法 124例活动性肺结核病人,84例痰涂片抗酸杆菌阳性(第1组),40例痰涂片抗酸杆菌阴性(第2组)。回顾性分析这些病灶的形态、数

关键词：隔离病人肺结核受试者操作特征曲线痰决策

使用心脏起搏器的非起搏器依赖性患者在1.5T强度下安全进行胸外磁共振成像的策略:115次检查的前瞻性研究

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

世界核心医学期刊文摘（心脏病学分册） 2007年第2期3卷 34-35页

作者： Sommer T. Naehle C.P. 刘文秀 Cardiovascular imaging section University of Bonn Department of Radiology Sigmund Freud Strafle 25 53127 Bonn Germany.Dr.

背景:本研究的目的是评估使用心脏起搏器的非起搏器依赖性患者安全进行胸外磁共振成像(MRI)检查的策略。方法和结果:实验对象的纳入标准是使用心脏起搏器且急需行MRI检查的患者。排除起搏器依赖性患者以及那些需行胸部检查的患者。该研... 详细信息

背景:本研究的目的是评估使用心脏起搏器的非起搏器依赖性患者安全进行胸外磁共振成像(MRI)检查的策略。方法和结果:实验对象的纳入标准是使用心脏起搏器且急需行MRI检查的患者。排除起搏器依赖性患者以及那些需行胸部检查的患者。该研究群体由82例使用心脏起搏器的患者组成,他们共接受了115次1.5T强度下的MRI检查。

关键词：磁共振成像致心律失常作用肌钙蛋白研究群体抑制作用血氧含量非同步预防措施