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https://www.readbyqxmd.com/read/29145482/combination-of-ultrasound-and-rtpa-enhances-fibrinolysis-in-an-in-vitro-clot-system
#1
Julia Masomi-Bornwasser, Philipp Winter, Hendrik Müller-Werkmeister, Susanne Strand, Jochem König, Oliver Kempski, Florian Ringel, Sven R Kantelhardt, Naureen Keric
BACKGROUND: Catheter-based lysis with recombinant tissue plasminogen activator (rtPA) is a well-established therapy for spontaneous intracerebral hemorrhage (ICH). The effectiveness of this therapy can be increased with ultrasound, but the optimal conditions are not yet clearly established. Using a novel in vitro system of blood clots previously developed by our group, we investigated various parameters of intralesional sonothrombolysis using an endosonography catheter in combination with rtPA...
2017: PloS One
https://www.readbyqxmd.com/read/29145332/primary-malignant-melanoma-of-the-lung-a-case-report-and-literature-review
#2
Juan Peng, Fengfeng Han, Tianyun Yang, Jinyuan Sun, Wenbin Guan, Xuejun Guo
RATIONALE: Primary malignant melanoma of the lung (PMML) is an extremely rare neoplasm with a dismal prognosis. The diagnosis of PMML is very difficult and is based on several clinical, radiological, and histopathological criteria. PATIENT CONCERNS: A 61-year-old women was admitted with a 2-month history of a productive cough and chest pain provoked by breathing and coughing. Computed tomography (CT) scans of the chest showed a large, solid tumor in the right middle lobe of the lung...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29144251/evaluation-of-dorsal-midline-discolorations-with-physical-examination-and-ultrasound
#3
Liat Ben-Sira, Penina Ponger, Shlomi Constantini
OBJECTIVE: To assess the association between dorsal midline skin discolorations, tethering of the spinal cord, and the role of ultrasound screening of these stigmata, focusing specifically on vascular lesions. STUDY DESIGN: We conducted a prospective observational study of infants <6 months of age with suspicious dorsal midline skin stigmata. All were evaluated by physical examination and ultrasound scan. A subset also had a magnetic resonance imaging examination...
November 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/29143993/how-to-measure-size-of-tubal-ectopic-pregnancy-on-ultrasound-scan
#4
K Rajah, V Goodhart, K P Zamora, T Amin, E Jauniaux, D Jurkovic
OBJECTIVE: To identify the preoperative ultrasound measurements for assessing the size of tubal ectopic pregnancy which correlate best with the findings at surgery. METHODS: We conducted a prospective study of all women with a conclusive transvaginal ultrasound diagnosis of tubal ectopic pregnancy over a 10-month period. In each case, we measured the total size of the ectopic pregnancy by placing the calipers on the outer edges of the visible trophoblastic tissue...
November 16, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29142342/prevalence-of-subclinical-peripheral-vascular-disease-in-obese-egyptian-patients
#5
Jehan Ahmed Younes, Nahla Dessoki El-Sayed, Ayman Ismail Kamel
Objective: To detect subclinical peripheral vascular disease in obese Egyptian patients and establish relations between obesity, metabolic risk factors, and PVD. Methods: This was a prospective case-control study including 100 obese patients (BMI >30) (G1). In addition, 100 age and sex matched non-obese healthy subjects as a control group (G2). Both groups were subjected to duplex ultrasound, Radionuclide muscle scan. Angiography was done for 17 patients. Results: The image pattern of 99mTc-MIBI muscles uptake was studied and perfusion reserve (PR%) was calculated in (G1) and (G2)...
October 2017: Indian Journal of Nuclear Medicine: IJNM: the Official Journal of the Society of Nuclear Medicine, India
https://www.readbyqxmd.com/read/29142190/detection-of-atherosclerotic-plaques-in-the-rabbit-aorta-using-ultrasound-microbubbles-conjugated-to-interleukin-18-antibodies
#6
Zhen-Zhen Jiang, Xia-Tian Liu, Cai-Ye Ma, Cong He, Xing-Yun Li, Chuan-Lin Hou, Zu-Sheng Cheng, Guo-Yuan Xia
BACKGROUND The purpose of the study was to investigate the ability of microbubbles (MBs) targeting interleukin-18 (IL-18) to detect plaques in a rabbit atherosclerotic plaque model. MATERIAL AND METHODS A rabbit atherosclerotic plaque model was established. The locations of the atherosclerotic plaques were verified by two-dimensional scanning and color Doppler flow imaging. An IL-18 antibody was conjugated to naked MBs (MBc) using the biotin-streptavidin conjugation method, resulting in the formation of MBIL-18...
November 16, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29141515/mri-powered-biomedical-devices
#7
Sierra Hovet, Hongliang Ren, Sheng Xu, Bradford Wood, Junichi Tokuda, Zion Tsz Ho Tse
Magnetic resonance imaging (MRI) is beneficial for imaging-guided procedures because it provides higher resolution images and better soft tissue contrast than computed tomography (CT), ultrasound, and X-ray. MRI can be used to streamline diagnostics and treatment because it does not require patients to be repositioned between scans of different areas of the body. It is even possible to use MRI to visualize, power, and control medical devices inside the human body to access remote locations and perform minimally invasive procedures...
November 16, 2017: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/29140326/photoacoustic-endomicroscopy-based-on-a-mems-scanning-mirror
#8
Heng Guo, Chaolong Song, Huikai Xie, Lei Xi
In this Letter, we present a high-resolution photoacoustic endomicroscopy probe based on a microelectromechanical systems (MEMS) scanning mirror. The built-in optical assembly consists of a 0.7 mm graded-index (GRIN) lens for light focusing and a ϕ1  mm MEMS mirror to reflect and scan the beam. A miniaturized unfocused ultrasound transducer with a center frequency of 10 MHz is used for photoacoustic detection. Sharp blades, carbon fibers, and black tapes were utilized to evaluate the performance of the system...
November 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/29140115/ultrasound-unenhanced-ct-fusion-for-detection-and-localization-of-ureteral-stones
#9
Eyal Bercovich, Maxim Leiderman, Nira Beck-Razi, Diana Gaitini, Marcia Javitt
OBJECTIVE: The standard of care for the diagnosis and follow-up of urolithiasis is unenhanced CT. The hypothesis of this study was that that by using image fusion of subsequent ultrasound (US) with the initial unenhanced CT, ureteral stones can be precisely localized. CONCLUSION: Of the 25 stones founds on unenhanced CT studies, 22 (88%) were confidently identified using US-unenhanced CT fusion within 72 hours after the initial CT scan was obtained. US-unenhanced CT fusion might obviate the need for repeated CT scans for monitoring urolithiasis...
November 15, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29137802/nanocomposite-materials-based-on-poly-vinyl-chloride-and-bovine-serum-albumin-modified-zno-through-ultrasonic-irradiation-as-a-green-technique-optical-thermal-mechanical-and-morphological-properties
#10
Shadpour Mallakpour, Marzieh Darvishzadeh
In this project, physicochemical properties of poly(vinyl chloride) (PVC) reinforced by ZnO nanoparticles (NPs) were studied. Firstly, ZnO NPs were modified with bovine serum albumin (BSA) as an organo-modifier and biocompatible substance through ultrasound irradiation as environmental friendly, low cost and rapid means. Nanocomposite (NC) films were prepared by loadings of various ratios of ZnO/BSA NPs (3, 6 and 9wt%) inside the PVC. Structural morphology and physical properties of the ZnO-BSA NPs and NC films were investigated via Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis (TGA), transmission electron microscopy and field emission scanning electron microscopy...
March 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29137799/ultrasound-irradiation-effect-on-morphological-properties-of-a-3d-nano-zinc-ii-supramolecular-coordination-polymer
#11
Hai Ning Chang, Suo Xia Hou, Zeng Chuan Hao, Guang Hua Cui
Nano-structures of [Zn(L)(atpt)]n (1) (L=1,2-bis(2-methylbenzimidazol-1-ylmethyl)benzene and H2atpt=2-aminoterephthalic acid) were obtained by hydrothermal and sonochemical approaches, characterized by scanning electron microscopy (SEM), IR, powder X-ray diffraction (PXRD), and elemental analysis. CP 1 features a 2D (4,4) network with the point symbol {4(4).6(2)}, the 3D supramolecular architecture in CP 1 is controlled through π⋯π stacking interactions. The influence of various concentrations of initial reagents, power of ultrasound irradiation, and ultrasound time on the morphology and size of nano-structured CP 1 were studied in detail...
March 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29137779/physicochemical-properties-of-germinated-dehulled-rice-flour-and-energy-requirement-in-germination-as-affected-by-ultrasound-treatment
#12
Junzhou Ding, Gary G Hou, Mengyi Dong, Shanbai Xiong, Siming Zhao, Hao Feng
Limited data are published regarding changes in the physicochemical properties of rice flours from germinated de-hulled rice treated by ultrasound. This work was undertaken to evaluate the effect of ultrasound treatment (25 kHz, 16 W/L, 5 min) on starch hydrolysis and functional properties of rice flours produced from ultrasound-treated red rice and brown rice germinated for up to 36 h. Environmental Scanning Electron Microscopy (ESEM) microimages showed that the ultrasound treatment altered the surface microstructure of rice, which helped to improve moisture transfer during steam-cooking...
March 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29137761/ultrasound-assisted-surface-treatment-of-zro2-with-bsa-and-incorporating-in-pvc-to-improve-the-properties-of-the-obtained-nanocomposites-fabrication-and-characterization
#13
Shadpour Mallakpour, Zahra Hajjari
This paper describes the preparation of poly(vinyl chloride) (PVC) nanocomposites (NCs) reinforced with modified zirconia (ZrO2) nanoparticles (NPs). The ZrO2 NPs were defined as efficient filler for PVC NCs. For achieving the best dispersion and improvement of properties, the surface of ZrO2 NPs was modified by Bovine Serum Albumin (BSA). Carboxylic acids and amines are important functional groups of BSA which handle the grafting BSA on the surface of ZrO2 NPs. The PVC/ZrO2-BSA NCs were fabricated by incorporation of various amounts of the ZrO2-BSA NPs (3, 6 and 9wt%) into PVC matrix...
March 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29137755/development-of-photocatalyst-coated-fluoropolymer-based-microreactor-using-ultrasound-for-water-remediation
#14
Juan Carlos Colmenares, Vaishakh Nair, Ewelina Kuna, Dariusz Łomot
Formation of thin layers of photocatalyst in photo-microreactor is a challenging work considering the properties of both catalyst and the microchannel material. The deposition of semiconductor materials on fluoropolymer based microcapillary requires the use of economical methods which are also less energy dependent. The current work introduces a new method for depositing nanoparticles of TiO2 on the inner walls of a hexafluoropropylene tetrafluoroethylene microtube under mild conditions using ultrasound technique...
March 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29137752/microwave-and-ultrasound-assisted-synthesis-of-poly-vinyl-chloride-riboflavin-modified-mwcnts-examination-of-thermal-mechanical-and-morphology-properties
#15
Amir Abdolmaleki, Shadpour Mallakpour, Faezeh Azimi
This study focused on the preparation and investigation of physicochemical features of new poly(vinyl chloride) (PVC) nanocomposites (NCs) including different amounts of carboxylated multi-walled carbon nanotubes (MWCNTs-COOH) functionalized with riboflavin (RIB). Firstly, to increase the hydrophilicity of MWCNTs, the surface of them was functionalized by incorporating and formation of ester groups with RIB as a low cost and environmentally friendly biomolecule through ultrasound and microwave irradiations...
March 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29137069/graves-disease-following-radioiodine-therapy-for-toxic-adenoma-clinical-case-report
#16
Guohua Shen, Futao Cui, Rui Huang, Anren Kuang
RATIONALE: There is a low risk of developing Graves disease (GD) with elevated thyrotropin receptor antibodies (TRAbs) in patients undergoing radioiodine therapy for toxic adenoma. PATIENT CONCERNS: An old female patient with a history of Hashimoto thyroiditis was referred to our department due to thyrotoxic symptoms. After the administration of radioiodine, a significant remission was achieved. However, after 4 months, she was referred to our department again due to recurrence of hyperthyroid symptoms...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29137032/non-hodgkin-lymphoma-of-multiple-extranodal-involvement-seen-on-mri-fdg-pet-ct-scans-a-case-report
#17
Shan Wang, Meng Meng, Qiuhu Wang, Kai Xu
RATIONALE: Anaplastic large cell lymphoma (ALCL) is a rare type of non-Hodgkin lymphoma (NHL). The most common extranodal sites of ALCL are skin, subcutaneous tissue, bone, lung, and gastrointestinal organs. This study reports a case of ALCL with multiple extranodal involvement, especially the whole body skeletal muscles, with the aim to share the imaging features of the ALCL including magnetic resonance imaging (MRI) and 18F-fluorodeoxyglucose positron emission tomography-computed tomography (18F-FDG PET-CT)...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29135072/measuring-human-placental-blood-flow-with-multidelay-3d-grase-pseudocontinuous-arterial-spin-labeling-at-3t
#18
Xingfeng Shao, Dapeng Liu, Thomas Martin, Teresa Chanlaw, Sherin U Devaskar, Carla Janzen, Aisling M Murphy, Daniel Margolis, Kyunghyun Sung, Danny J J Wang
BACKGROUND: Placenta influences the health of both a woman and her fetus during pregnancy. Maternal blood supply to placenta can be measured noninvasively using arterial spin labeling (ASL). PURPOSE: To present a multidelay pseudocontinuous arterial spin labeling (pCASL) combined with a fast 3D inner-volume gradient- and spin-echo (GRASE) imaging technique to simultaneously measure placental blood flow (PBF) and arterial transit time (ATT), and to study PBF and ATT evolution with gestational age during the second trimester...
November 14, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29134955/is-ultrasound-a-reliable-diagnostic-tool-for-acute-appendicitis-a-single-centre-experience
#19
Dimitrios Zosimas, Panagis M Lykoudis, Phoebe Leung, Giuseppe Strano, Veeranna Shatkar
AIM: Aim of the present study is to evaluate the utility of US as a diagnostic method for acute appendicitis (AA) in a district general hospital, by use of accurate quality indices. MATERIAL AND METHODS: The records of all patients who underwent an appendicectomy in a one year period in a single centre were reviewed. The patients who underwent a preoperative US scan were included in the study in accordance to specific criteria and the results were statistically compared to the final surgical histology...
November 14, 2017: Annali Italiani di Chirurgia
https://www.readbyqxmd.com/read/29133166/determination-of-threshold-value-for-follow-up-of-isolated-antenatal-hydronephrosis-detected-in-the-second-trimester
#20
Ravi de Roo, Bart J Voskamp, C Emily Kleinrouweler, Ben W Mol, Eva Pajkrt, Antonia H M Bouts
INTRODUCTION: Isolated antenatal hydronephrosis (ANH), defined as a dilation of the renal pelvis (≥5 mm), is one of the most common abnormalities detected on prenatal ultrasound. However, established cut-off values for postnatal follow-up differ between countries and are based on little evidence. The current protocol in the Netherlands for follow-up might be too conservative. OBJECTIVE: To assess the applicability of a higher threshold for follow-up of isolated antenatal hydronephrosis (ANH) than the current practice, without the risk of missing significant postnatal urinary tract obstruction...
June 21, 2017: Journal of Pediatric Urology
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