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https://www.readbyqxmd.com/read/28812872/effect-of-mineral-dissolution-precipitation-and-co2-exsolution-on-co2-transport-in-geological-carbon-storage
#1
Ruina Xu, Rong Li, Jin Ma, Di He, Peixue Jiang
Geological carbon sequestration (GCS) in deep saline aquifers is an effective means for storing carbon dioxide to address global climate change. As the time after injection increases, the safety of storage increases as the CO2 transforms from a separate phase to CO2(aq) and HCO3(-) by dissolution and then to carbonates by mineral dissolution. However, subsequent depressurization could lead to dissolved CO2(aq) escaping from the formation water and creating a new separate phase which may reduce the GCS system safety...
August 16, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28812201/effectiveness-of-navigation-guided-cyst-aspiration-before-resection-of-large-cystic-brain-tumors-a-proof-of-concept-for-more-radical-surgery
#2
Tae Hoon Roh, Kyoung Su Sung, Seok-Gu Kang, Ju Hyung Moon, Eui Hyun Kim, Sun Ho Kim, Jong Hee Chang
BACKGROUND: Resection of tumors close to the corticospinal tract (CST) carries a high risk of damage to the CST. For cystic tumors, aspirating the cyst before resection may reduce the risk of damage to vital structures. This study evaluated the effectiveness of cyst aspiration, by comparing the results before and after aspiration of diffusion tensor image (DTI) tractography. METHODS: This study enrolled 23 patients with large cystic brain tumors (>20 cm(3)) between 2012 and 2016...
August 16, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28812185/reliability-of-standing-weight-bearing-0-25t-mr-imaging-findings-and-positional-changes-in-the-lumbar-spine
#3
Bjarke B Hansen, Philip Hansen, Anders F Christensen, Charlotte Trampedach, Zoreh Rasti, Henning Bliddal, Mikael Boesen
OBJECTIVE: To test the reliability and absolute agreement of common degenerative findings in standing positional magnetic resonance imaging (pMRI). METHODS AND MATERIALS: Low back pain patients with and without sciatica were consecutively enrolled to undergo a supine and standing pMRI. Three readers independently evaluated the standing pMRI for herniation, spinal stenosis, spondylolisthesis, HIZ lesions and facet joint effusion. The evaluation included a semi-quantitative grading of spinal stenosis, foraminal stenosis and spinal nerve root compression...
August 15, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28812002/image-guided-thermal-ablation-with-mr-based-thermometry
#4
REVIEW
Mingming Zhu, Ziqi Sun, Chin K Ng
Thermal ablation techniques such as radiofrequency, microwave, high intensity focused ultrasound (HIFU) and laser have been used as minimally invasive strategies for the treatment of variety of cancers. MR thermometry methods are readily available for monitoring thermal distribution and deposition in real time, leading to decrease of incidents of normal tissue damage around targeted lesion. HIFU and laser-induced thermal therapy (LITT) are the two widely accepted tumor ablation techniques because of their compatibility with MR systems...
June 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28811948/the-dorsoulnar-artery-perforator-adipofascial-flap-in-the-treatment-of-distal-radioulnar-synostosis
#5
Alessia Pagnotta, Giorgio Antonietti, Iakov Molayem
Posttraumatic radioulnar synostosis (RUS) is a rare event following forearm fractures. Consequences are disabling for patients who suffer from functional limitation in forearm pronosupination. Distal RUS are even more rare and more difficult to treat because of high recurrence rates. The patient we describe in this paper came to our attention with a double distal RUS recurrence and a Darrach procedure already performed. We performed a radical excision of RUS and interposition with a vascularized dorsoulnar artery (DUA) adipofascial perforator flap...
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/28811932/two-novel-direct-spio-labels-and-in%C3%A2-vivo-mri-detection-of-labeled-cells-after-acute-myocardial-infarct
#6
Riikka M Korpi, Kirsi Alestalo, Timo Ruuska, Eveliina Lammentausta, Ronald Borra, Fredrik Yannopoulos, Siri Lehtonen, Jarkko T Korpi, Elisa Lappi-Blanco, Vesa Anttila, Petri Lehenkari, Tatu Juvonen, Roberto Blanco Sequieros
BACKGROUND: Acute myocardial infarction (AMI) is a leading cause of morbidity and mortality worldwide. Cellular decay due hypoxia requires rapid and validated methods for possible therapeutic cell transplantation. PURPOSE: To develop direct and rapid superparamagnetic iron oxide (SPIO) cell label for a large-animal model and to assess in vivo cell targeting by magnetic resonance imaging (MRI) in an experimental AMI model. MATERIAL AND METHODS: Bone marrow mononuclear cells (BMMNCs) were labeled with SPIO particles using two novel direct labeling methods (rotating incubation method and electroporation)...
August 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/28811899/angiomyofibroblastoma-of-the-vulva-diagnosed-preoperatively-a-case-report
#7
Tadahiro Shoji, Ryosuke Takeshita, Rika Mukaida, Tamotsu Sato, Masami Taguchi, Shunichi Sasou
A 50-year-old woman (gravida 2, para 2) first noticed a small nodule in the right labium majus 2 years prior to the initial visit to the Hachinohe Red Cross Hospital (Hachinohe, Japan), which had gradually increased in size. On physical examination, a well-circumscribed, elastic, firm, goose egg-sized, subcutaneous mass protruding from the right labium majus was identified. On magnetic resonance imaging (MRI), the lesion was hypointense on T1-weighted images and was well-circumscribed, strongly enhanced and homogeneous on gadolinium-enhanced images, measuring 7...
September 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28811630/solid-state-31-p-and-1-h-chemical-mr-micro-imaging-of-hard-tissues-and-biomaterials-with-magic-angle-spinning-at-very-high-magnetic-field
#8
Maxime Yon, Vincent Sarou-Kanian, Ulrich Scheler, Jean-Michel Bouler, Bruno Bujoli, Dominique Massiot, Franck Fayon
In this work, we show that it is possible to overcome the limitations of solid-state MRI for rigid tissues due to large line broadening and short dephasing times by combining Magic Angle Spinning (MAS) with rotating pulsed field gradients. This allows recording ex vivo (31)P 3D and 2D slice-selected images of rigid tissues and related biomaterials at very high magnetic field, with greatly improved signal to noise ratio and spatial resolution when compared to static conditions. Cross-polarization is employed to enhance contrast and to further depict spatially localized chemical variations in reduced experimental time...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811353/the-omeract-rheumatoid-arthritis-magnetic-resonance-imaging-mri-scoring-system-updated-recommendations-by-the-omeract-mri-in-arthritis-working-group
#9
Mikkel Østergaard, Charles G Peterfy, Paul Bird, Frédérique Gandjbakhch, Daniel Glinatsi, Iris Eshed, Espen A Haavardsholm, Siri Lillegraven, Pernille Bøyesen, Bo Ejbjerg, Violaine Foltz, Paul Emery, Harry K Genant, Philip G Conaghan
OBJECTIVE: The Outcome Measures in Rheumatology (OMERACT) Rheumatoid Arthritis (RA) Magnetic Resonance Imaging (MRI) scoring system (RAMRIS), evaluating bone erosion, bone marrow edema/osteitis, and synovitis, was introduced in 2002, and is now the standard method of objectively quantifying inflammation and damage by MRI in RA trials. The objective of this paper was to identify subsequent advances and based on them, to provide updated recommendations for the RAMRIS. METHODS: MRI studies relevant for RAMRIS and technical and scientific advances were analyzed by the OMERACT MRI in Arthritis Working Group, which used these data to provide updated considerations on image acquisition, RAMRIS definitions, and scoring systems for the original and new RA pathologies...
August 15, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28811033/strong-magnetoelectrolysis-effect-during-electrochemical-reaction-monitored-in-situ-by-high-resolution-nmr-spectroscopy
#10
Bruna Ferreira Gomes, Pollyana Ferreira da Silva, Carlos Manuel Silva Lobo, Maiara da Silva Santos, Luiz Alberto Colnago
The strong effect of magnetic field on the electrochemical (EC) reduction of a diamagnetic species was monitored in situ in a 600 MHz (14 T) NMR spectrometer. Throughout EC-NMR experiments, the diamagnetic species is influenced by the Lorentz force (cross product of current density and magnetic field), which in turn acts on analyte transport and, as a result, enhances reaction rates. This phenomenon, known as magnetoelectrolysis, has not been considered in several in situ EC-NMR studies in solution, electron paramagnetic resonance (EC-EPR) spectroscopy, and magnetic resonance imaging (EC-MRI) involving the oxidation and reduction of organic compounds and lithium ion batteries...
August 29, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28810590/diagnosis-and-surgical-treatment-of-cervical-macrocystic-lymphatic-malformations-in-infants
#11
Jing Ma, Ruan Biao, Fan Lou, Ken Lin, Ying-Qin Gao, Mei-Lan Wang, Yan-Li Yang, Tie-Song Zhang
The treatment of lymphatic malformations (LMs) represents a great clinical challenge. The present study reported on the treatment of 68 infants with cervical macrocystic LMs using surgical resection. The cases were retrospectively analyzed. All patients underwent pre-operative ultrasonography, computed tomography (CT), and magnetic resonance imaging (MRI) examinations. The surgery was performed under general anesthesia with endotracheal intubation. Ultrasonograms showed that 24 cases were monolocular, 44 were multilocular, 16 had no echo, 20 had a uniform low-level echo and 32 had a non-uniform low-level echo...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28809731/the-histopathological-features-and-ct-mri-imaging-performances-in-hepatic-angiomyolipoma-patients
#12
Huiguo Ding, Hongtao Wei, Hui Liu, Yuhan Chen, Xiaowei Xue, Honglei Weng
AIM: To evaluate the diagnostic value of dynamic contrast-enhanced computed tomography (CT) and magnetic resonance imaging (MRI) in the differential diagnosis of hepatic angiomyolipoma (HAML) and hepatocellular carcinoma (HCC) and to clarify the relationship between histopathological features and CT or MRI imaging performances in HAML. MATERIAL AND METHODS: Six HAML and 33 non-cirrhotic HCC patients confirmed by histopathology were retrospectively analyzed. The serum biomarkers, CT and MRI examinations were conventionally performed before the confirmatory histological diagnosis...
August 8, 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28809636/-arthroscopic-finding-of-knee-joint-in-relation-to-age-and-its-comparison-with-pre-operative-clinical-finding-a-retrospective-study
#13
P Látal, K Šimeček, M Kloub
PURPOSE OF THE STUDY In the retrospective study of two South Bohemian centres we present the comparison of pre-operative anamnestic clinical signs in relation to the arthroscopic intraoperative finding. The obtained data is used also to evaluate the arthroscopic finding in relation to age and sex. MATERIAL AND METHODS The arthroscopic findings of patients who underwent surgery in 2013-2014 period (1.1.2013-31.12.2014) at the Department of Trauma Surgery of České Budějovice Hospital, a.s. and in 2014 (1.1...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28809124/measurement-of-the-normal-feline-pituitary-gland-in-brachycephalic-and-mesocephalic-cats
#14
Thomas Christian Häußler, Kerstin Heike von Pückler, Cetina Thiel, Sylke Enderlein, Klaus Failing, Nele Ondreka, Martin Kramer, Martin Jürgen Schmidt
Objectives The purpose of this study was to determine differences in normal feline pituitary dimensions in brachycephalic and mesocephalic cats as a basis for establishing cryohypophysectomy in cats. Methods Measurements were performed on sagittal T2-weighted and transverse post-gadolinium T1-weighted or T1 3D fast field echo-weighted MRI images. A total of 32 brachycephalic and 27 mesocephalic cats were examined. Inter-observer reproducibility was assessed by t-test and Bland-Altman analysis. Results The cats were 0...
August 1, 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/28808987/volume-expansion-of-periaqueductal-gray-in-episodic-migraine-a-pilot-mri-structural-imaging-study
#15
Zhiye Chen, Xiaoyan Chen, Mengqi Liu, Shuangfeng Liu, Lin Ma, Shengyuan Yu
BACKGROUND: The periaqueductal gray (PAG) dysfunction was recognized in migraine, and the nonspecific PAG lesions were also observed in episodic migraine (EM) recently. However, the PAG volume change was not totally detected in EM up to now. Herein, the aim of this study was to investigate altered PAG volume in EM patients based on high resolution brain structural image. METHODS: The brain structural images were obtained from 18 normal controls (NC), 18 EM patients and 16 chronic migraine (CM) on 3...
August 15, 2017: Journal of Headache and Pain
https://www.readbyqxmd.com/read/28808768/high-resolution-mri-3t-mri-in-diagnosis-of-wrist-pain-is-diagnostic-arthroscopy-still-necessary
#16
Sabine Ochman, B Wieskötter, M Langer, V Vieth, M J Raschke, C Stehling
INTRODUCTION: 3T MRI has become increasingly available for better imaging of interosseous ligaments, TFCC, and avascular necrosis compared with 1.5T MRI. This study assesses the sensitivity and specificity of 3T MRI compared with arthroscopy as the gold standard. PATIENTS AND METHODS: Eighteen patients were examined with 3T MRI using coronal T1-TSE; PD-FS; and coronal, sagittal, and axial contrast-enhanced T1-FFE-FS sequences. Two musculoskeletal radiologists evaluated the images independently...
August 14, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28808764/high-resolution-3-t-mri-of-the-triangular-fibrocartilage-complex-in-the-wrist-injury-pattern-and-mr-features
#17
Huili Zhan, Huibo Zhang, Rongjie Bai, Zhanhua Qian, Yue Liu, Heng Zhang, Yuming Yin
OBJECTIVES: To investigate if using high-resolution 3-T MRI can identify additional injuries of the triangular fibrocartilage complex (TFCC) beyond the Palmer classification. MATERIALS AND METHODS: Eighty-six patients with surgically proven TFCC injury were included in this study. All patients underwent high-resolution 3-T MRI of the injured wrist. The MR imaging features of TFCC were analyzed according to the Palmer classification. RESULTS: According to the Palmer classification, 69 patients could be classified as having Palmer injuries (52 had traumatic tears and 17 had degenerative tears)...
August 15, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28808701/osteosarcoma-of-the-mandible-a-case-report-with-ct-mri-and-scintigraphy
#18
Mikiko Sue, Takaaki Oda, Yoshihiko Sasaki, Ayako Kameta, Yasuo Okada, Ichiro Ogura
Osteosarcomas are especially rare in the mandible and maxilla, representing 1.6% of all bony malignant tumours. In this article, we described a case of osteosarcoma of the mandible. Computed tomography (CT) image showed a well-circumscribed homogeneous mass, with nonhomogeneous contrast enhancement. T1-weighted magnetic resonance imaging (MR) image showed intermediate signal intensity on, and after administration the lesion showed signal intensity lower than muscle. T2-weighted MR image showed heterogeneous high signal intensity...
2017: Chinese Journal of Dental Research
https://www.readbyqxmd.com/read/28808617/a-novel-method-of-quantifying-brain-atrophy-associated-with-age-related-hearing-loss
#19
Z Jason Qian, Peter D Chang, Gul Moonis, Anil K Lalwani
A growing body of evidence has shown that a relationship between age-related hearing loss and structural brain changes exists. However, a method to measure brain atrophy associated with hearing loss from a single MRI study (i.e. without an interval study) that produces an independently interpretable output does not. Such a method would be beneficial for studying patterns of structural brain changes on a large scale. Here, we introduce our method for this. Audiometric evaluations and mini-mental state exams were obtained in 34 subjects over the age of 80 who have had brain MRIs in the past 6 years...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28808515/palpitations-as-a-presenting-feature-of-multisystem-sarcoidosis
#20
Richie Manikat, Julieta Gilson, Mahesh Krishnamurthy, Koroush Khalighi
Introduction: Sarcoidosis is described as a systemic condition characterized by non-caseating granulomas in multiple organs. In this report, we present an unusual manifestation of cardiac sarcoidosis and review management strategies. Case presentation: A 29-year-old African-American man presented with weight loss, fatigue, dyspnea, palpitations, night sweats, painless left eye redness and bilateral leg pain over the course of three months. His physical exam revealed left conjunctival congestion and bilateral crackles on auscultation...
July 2017: Journal of Community Hospital Internal Medicine Perspectives
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