keyword
https://read.qxmd.com/read/38424047/probing-molecules-in-gas-cells-of-subwavelength-thickness-with-high-frequency-resolution
#21
JOURNAL ARTICLE
Guadalupe Garcia Arellano, Joao Carlos de Aquino Carvalho, Hippolyte Mouhanna, Esther Butery, Thierry Billeton, Frederic Du-Burck, Benoit Darquié, Isabelle Maurin, Athanasios Laliotis
Miniaturizing and integrating atomic vapor cells is widely investigated for the purposes of fundamental measurements and technological applications such as quantum sensing. Extending such platforms to the realm of molecular physics is a fascinating prospect that paves the way for compact frequency metrology as well as for exploring light-matter interactions with complex quantum objects. Here, we perform molecular rovibrational spectroscopy in a thin-cell of micrometric thickness, comparable to excitation wavelengths...
February 29, 2024: Nature Communications
https://read.qxmd.com/read/38422024/penile-traumatic-testicular-dislocation-a-case-report
#22
JOURNAL ARTICLE
Ze-Pai Chi, Yong-Hai Zhang
Traumatic testicular dislocation is rare and usually occurs in patients after a traumatic motor accident. Manual reduction or surgical exploration is the main treatment for this condition. We report a rare case of unilateral traumatic testicular dislocation in a man with an ectopic testis in the middle of the penis after a motorcycle crash injury. On the sixth day of hospitalization, the patient found a lump in the middle of his penis. Doppler ultrasound showed an ectopic testicle in the middle of the penis with good blood flow...
February 2024: Journal of International Medical Research
https://read.qxmd.com/read/38418022/the-influence-of-blood-velocity-and-vessel-geometric-parameters-on-wall-shear-stress
#23
JOURNAL ARTICLE
Fangjia Pan, Naoko Mori, Shunji Mugikura, Makoto Ohta, Hitomi Anzai
Vascular geometry was proposed to be one risk factor of atherosclerosis (AS). When developing this hypothesis, the discussion of geometry-wall shear stress (WSS) has often been included. However, further exploration on how various geometric parameters were affecting WSS was needed. The purpose of this study was to investigate the influence degree of vessel geometric parameters and blood velocity on WSS. A computational fluid dynamics (CFD) analyses of the vertebral and basilar arteries (VA and BA, respectively) was used...
February 2024: Medical Engineering & Physics
https://read.qxmd.com/read/38414046/neonatal-pyocele-originating-from-a-urinary-tract-infection-a-case-report
#24
JOURNAL ARTICLE
Zahra Jamali, Mohammad Shafie'ei, Najmeh Soltani Nejad
BACKGROUND: The origins of pyocele are primarily idiopathic, with reports suggesting the spread from intraperitoneal or hematogenous infection. However, we found no information in the literature regarding the pathogen's spread from the urinary tract. CASE PRESENTATION: We report here a case of a 23-day-old term Iranian boy (Fars ethnicity) with complaints of new-onset fever, irritability, poor feeding, right hemiscrotal erythema, and edema. Moreover, the physical examination revealed an enlarged, erythematous, tender right hemiscrotum and edematous scrotal walls...
February 28, 2024: Journal of Medical Case Reports
https://read.qxmd.com/read/38410862/serial-ultrasonography-for-the-assessment-of-healing-of-lower-extremity-bone-stress-injury-and-correlation-with-return-to-sport-exercise
#25
JOURNAL ARTICLE
Brett G Toresdahl, Justin Conway, Theodore T Miller, Marci A Goolsby, Christian S Geannette, Brianna Quijano, Lisa R Callahan
BACKGROUND: Lower extremity bone stress injuries (BSIs) are common among athletes who participate in high-impact activities. Conventional imaging is limited in assessing healing of BSIs. HYPOTHESIS: Serial ultrasonography (US) can identify changes in appearance of lower extremity BSIs over time that can be correlated with symptoms and return to exercise/sport. STUDY DESIGN: Cohort observational study. LEVEL OF EVIDENCE: Level 3...
February 27, 2024: Sports Health
https://read.qxmd.com/read/38405362/a-rare-case-of-thyrotoxic-periodic-paralysis-revealing-graves-disease-in-a-young-malian
#26
Mohamed Emile Dembélé, Abdoulaye Yalcouyé, Mamadou Cissoko, Lassana Cissé, Cheick Oumar Guinto, Guida Landouré
Sporadic thyrotoxic periodic paralysis (TPP) is a rare muscle disorder that manifests with abrupt muscle weakness and hypokalemia associated with hyperthyroidism. It is mostly reported in the Asian population, and rare in Caucasians. Only few cases have been reported in people with black ancestry. Here, we report a rare case of thyrotoxic periodic paralysis revealing Graves' disease in a young Malian. A 17-year-old man was admitted in the Neurology clinic with rapid proximal tetraplegia that started after strenuous physical activities at the school...
February 2024: Clinical Case Reports
https://read.qxmd.com/read/38398750/lower-limb-perfusion-and-cardiovascular-physiology-are-significantly-improved-in-non-healthy-aged-adults-by-regular-home-based-physical-activities-an-exploratory-study
#27
JOURNAL ARTICLE
Margarida Florindo, João Gregório, Luís Monteiro Rodrigues
Common daily activities including walking might be used to improve cardiovascular health in the presence of disease. Thus, we designed a specific home-based physical activity program to assess cardiovascular indicators in an older, non-active, non-healthy population. Ten participants, with a mean age of 62.4 ± 5.6 years old, were chosen and evaluated twice-upon inclusion (D0), and on day 30 (D30)-following program application. Perfusion was measured in both feet by laser Doppler flowmetry (LDF) and by polarised spectroscopy (PSp)...
February 8, 2024: Life
https://read.qxmd.com/read/38389345/evaluation-of-remodeling-and-extrusion-of-polyurethane-meniscal-implants-after-meniscus-reconstruction-using-ultrasonography
#28
JOURNAL ARTICLE
Tomasz Poboży, Wojciech Konarski, Kamil Poboży, Julia Domańska, Klaudia Konarska
INTRODUCTION: Meniscal tears are among the most common indications for knee arthroscopy. Artificial polyurethane scaffolds have demonstrated efficacy in reducing pain and promoting the growth of normal meniscal tissue, with high absorption rates facilitating full tissue regeneration. AIMS: This study aimed to evaluate the remodeling of polyurethane meniscal implants post-reconstruction using ultrasonography. This imaging technique not only assesses changes in implant properties, such as echogenicity, but also the shape changes during functional examination...
2024: Current medical imaging
https://read.qxmd.com/read/38382200/cardiovascular-disease-in-central-bearded-dragons-pogona-vitticeps-54-cases-2007-2022
#29
JOURNAL ARTICLE
Sarah M Ozawa, Kursten V Pierce, Amy B Alexander, Krista A Keller, Danielle K Tarbert, David Sanchez-Migallon Guzman, Miranda J Sadar, Julie D Sheldon, Danielle M Meritet
OBJECTIVE: To describe the clinical features, histopathologic lesions, and outcome of cardiovascular disease in central bearded dragons. ANIMALS: 54 bearded dragons. METHODS: Retrospective evaluation of captive bearded dragons with antemortem imaging or postmortem diagnosis of cardiovascular disease from 2007 to 2022 from 6 hospitals. RESULTS: The total prevalence of cardiovascular disease was 3.3% (54/1,655). Physical examination findings were available in 46 cases with change in mentation being the most common finding (n = 28/46 [60...
February 23, 2024: American Journal of Veterinary Research
https://read.qxmd.com/read/38373294/deep-learning-based-renal-artery-stenosis-diagnosis-via-multimodal-fusion
#30
JOURNAL ARTICLE
Xin Wang, Sheng Cai, Hongyan Wang, Jianchu Li, Yuqing Yang
PURPOSE: Diagnosing Renal artery stenosis (RAS) presents challenges. This research aimed to develop a deep learning model for the computer-aided diagnosis of RAS, utilizing multimodal fusion technology based on ultrasound scanning images, spectral waveforms, and clinical information. METHODS: A total of 1485 patients received renal artery ultrasonography from Peking Union Medical College Hospital were included and their color doppler sonography (CDS) images were classified according to anatomical site and left-right orientation...
February 19, 2024: Journal of Applied Clinical Medical Physics
https://read.qxmd.com/read/38366536/multiscale-richtmyer-meshkov-instability-experiments-to-isolate-the-strain-rate-dependence-of-strength
#31
JOURNAL ARTICLE
Michael B Prime, Saryu J Fensin, David R Jones, Joshua W Dyer, Daniel T Martinez
Theoretical analysis of Richtmyer-Meshkov instability (RMI) experiments for solid strength shows that the strain rate for a given shock should be inversely proportional to the length scale of the sine wave perturbations when η_{0}k, the nondimensional amplitude to wavelength ratio, is held fixed. To isolate the effect of strain rate on strength, free-surface RMI specimens of annealed copper were prepared with three perturbation regions with the same η_{0}k but different length scales, characterized by the wavelength λ varying by a factor of 4...
January 2024: Physical Review. E
https://read.qxmd.com/read/38364478/mechanism-of-surfactant-interactions-with-feline-coronavirus-a-physical-chemistry-perspective
#32
JOURNAL ARTICLE
Helena Mateos, Antonia Mallardi, Michele Camero, Gianvito Lanave, Cristiana Catella, Alessio Buonavoglia, Osvalda De Giglio, Canio Buonavoglia, Gerardo Palazzo
HYPOTHESIS: Surfactants are inexpensive chemicals with promising applications in virus inactivation, particularly for enveloped viruses. Yet, the detailed mechanisms by which surfactants deactivate coronaviruses remain underexplored. This study delves into the virucidal mechanisms of various surfactants on Feline Coronavirus (FCoV) and their potential applications against more pathogenic coronaviruses. EXPERIMENTS: By integrating virucidal activity assays with fluorescence spectroscopy, dynamic light scattering and laser Doppler electrophoresis, alongside liposome permeability experiments, we have analyzed the effects of non-ionic and ionic surfactants on viral activity...
February 12, 2024: Journal of Colloid and Interface Science
https://read.qxmd.com/read/38361040/thermography-at-the-elbow-among-patients-with-rheumatoid-arthritis-a-comparison-with-ultrasound-detected-joint-inflammation-findings
#33
JOURNAL ARTICLE
York Kiat Tan, Rehena Sultana, Julian Thumboo
INTRODUCTION: There is a lack of data on the use of thermography for elbow joint inflammation assessment among patients with rheumatoid arthritis (RA). Hence, we aimed to compare thermography with ultrasonography (a more established imaging modality for joint inflammation assessment) in the assessment of inflammation in the elbows of patients with RA. METHODS: Standardised minimum (Tmin), maximum (Tmax) and average (Tavg) temperatures at each elbow (medial, lateral, posterior and anterior aspects) were summed to obtain the thermographic parameters MIN, MAX and AVG, respectively...
February 15, 2024: Rheumatology and Therapy
https://read.qxmd.com/read/38348982/testicular-and-scrotal-abnormalities-in-pediatric-and-adult-patients
#34
JOURNAL ARTICLE
Patrycja Sosnowska-Sienkiewicz, Danuta Januszkiewicz-Lewandowska, Przemysław Mańkowski
Testicular and scrotal abnormalities can occur in children, adolescents, and adults. The lesions, often accompanied by pain and swelling/enlargement of the scrotum, can cause anxiety in patients and their parents. Regardless of age, proper diagnosis is based on adequate anamnesis and physical examination. Color Doppler ultrasound is the first-line test in the differential process of testicular and scrotal diseases. Testicular and scrotal lesions require differentiation for benign and malignant processes as well as therapeutic management, including urgent surgical intervention...
October 17, 2023: Polski Przeglad Chirurgiczny
https://read.qxmd.com/read/38338971/associations-between-cerebrovascular-function-and-the-expression-of-genes-related-to-endothelial-function-in-hormonal-migraine
#35
JOURNAL ARTICLE
Jemima S A Dzator, Robert A Smith, Kirsten G Coupland, Peter R C Howe, Lyn R Griffiths
There is evidence to suggest that hormonal migraine is associated with altered cerebrovascular function. We aimed to investigate whether the expression of genes related to endothelial function in venous blood (1) might influence cerebrovascular function, (2) differs between hormonal migraineur and non-migraineur women, and (3) changes following resveratrol supplementation. This study utilised data obtained from 87 women (59 hormonal migraineurs and 28 controls) where RNA from venous blood was used to quantify gene expression and transcranial Doppler ultrasound was used to evaluate cerebrovascular function...
January 30, 2024: International Journal of Molecular Sciences
https://read.qxmd.com/read/38338940/physicochemical-characteristics-of-porous-starch-obtained-by-combined-physical-and-enzymatic-methods-part-1-structure-adsorption-and-functional-properties
#36
JOURNAL ARTICLE
Monika Sujka, Agnieszka Ewa Wiącek
Porous starch can be applied as an adsorbent and encapsulant for bioactive substances in the food and pharmaceutical industries. By using appropriate modification methods (chemical, physical, enzymatic, or mixed), it is possible to create pores on the surface of the starch granules without disturbing their integrity. This paper aimed to analyze the possibility of obtaining a porous structure for native corn, potato, and pea starches using a combination of ultrasound, enzymatic digestion, and freeze-drying methods...
January 29, 2024: International Journal of Molecular Sciences
https://read.qxmd.com/read/38336714/a-case-report-of-single-umbilical-artery-combined-with-fetal-bladder-exstrophy-in-singleton-pregnancy-and-related-literature-review
#37
JOURNAL ARTICLE
Jun Zhan, Fenglin Jia, Qianqian Gao, Xue Xiao
BACKGROUND: According to prenatal ultrasonographic studies, single umbilical artery may be present alone or in association with other fetal abnormalities. So far, the exact pathogenesis of bladder exstrophy is unclear. Some scholars believe that bladder exstrophy and cloacal exstrophy should be regarded as a disease spectrum to explore their pathogenesis. If bladder exstrophy and cloacal exstrophy are regarded as the same disease spectrum, then we can speculate that the single umbilical artery should have the probability of being accompanied by bladder exstrophy at the same time...
February 9, 2024: BMC Pregnancy and Childbirth
https://read.qxmd.com/read/38333233/takayasu-arteritis-presenting-as-a-stroke-in-young-a-case-report
#38
Paras Oli, Prabhat Poudel, Shradha Kc, Neeraj Thapa, Aastha Kc
INTRODUCTION: Takayasu arteritis is a large-vessel vasculitis predominantly seen in young women. Lack of signs and symptoms in the early stage of the disease often delays the diagnosis and thus leads to significant morbidity and mortality. One severe complication that may arise is a significant narrowing of blood vessels, potentially leading to life-threatening ischemic repercussions. CASE PRESENTATION: The authors present a case of a 29-year-old female who presented to our ER with features of left-sided hemiparesis and right-sided facial deviation...
February 2024: Annals of Medicine and Surgery
https://read.qxmd.com/read/38313930/testicular-torsion-in-the-undescended-testis-of-a-four-year-old-a-delayed-diagnosis
#39
Leena K Alshaibani, Sara K Alshaibani
In this report, we discuss the case of a four-year-old boy known to have global developmental delay (GDD) and infantile spasm. The child was brought to the emergency department (ER) with a tender inguinal swelling and fever. Notably, there was no previous indication of an undescended testicle (UDT), and the scrotum was not examined in the ER initially. The abdominal radiograph was unremarkable, and an ultrasound of the groin was requested to investigate the nature of the swelling. The ultrasound yielded a differential diagnosis of direct or indirect inguinal hernia containing intestinal loops or a necrotic lymph node...
January 2024: Curēus
https://read.qxmd.com/read/38308448/cold-stimulation-of-the-oral-cavity-redistributes-blood-towards-the-brain-in-healthy-volunteers
#40
JOURNAL ARTICLE
Ole Hensel
BACKGROUND: The aim of this study was to analyze cold stimulation-induced changes in cerebral and cardiac hemodynamics. METHODS: Upon ingestion of an ice cube, the changes in resistance index, mean flow velocity and flow index of the middle cerebral arteries (MCA) were assessed using transcranial Doppler sonography. Extracranial duplex sonography was used to measure the mean flow velocity and resistance index of the right internal carotid artery (ICA). The change in mean arterial pressure, heart rate, root mean square of successive differences (RMSSD) and end-tidal carbon dioxide pressure were analyzed additionally...
February 2, 2024: European Journal of Neurology
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