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Ultrasound diagnosis

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https://www.readbyqxmd.com/read/28431275/learning-non-rigid-deformations-for-robust-constrained-point-based-registration-in-image-guided-mr-trus-prostate-intervention
#1
John A Onofrey, Lawrence H Staib, Saradwata Sarkar, Rajesh Venkataraman, Cayce B Nawaf, Preston C Sprenkle, Xenophon Papademetris
Accurate and robust non-rigid registration of pre-procedure magnetic resonance (MR) imaging to intra-procedure trans-rectal ultrasound (TRUS) is critical for image-guided biopsies of prostate cancer. Prostate cancer is one of the most prevalent forms of cancer and the second leading cause of cancer-related death in men in the United States. TRUS-guided biopsy is the current clinical standard for prostate cancer diagnosis and assessment. State-of-the-art, clinical MR-TRUS image fusion relies upon semi-automated segmentations of the prostate in both the MR and the TRUS images to perform non-rigid surface-based registration of the gland...
April 12, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28431106/ultrasound-cut-off-values-for-intima-media-thickness-of-temporal-facial-and-axillary-arteries-in-giant-cell-arteritis
#2
Valentin S Schäfer, Aaron Juche, Sofia Ramiro, Andreas Krause, Wolfgang A Schmidt
Objective.: To evaluate the intima-media thickness (IMT) of arteries involved in GCA for determining cut-off values. Methods.: Forty newly diagnosed GCA patients in a fast-track GCA clinic and 40 age- and sex-matched controls were included. IMT measurement was performed at or within 24 h after diagnosis. The common superficial temporal arteries with their frontal and parietal branches and the facial arteries were bilaterally examined with a 10-22 MHz probe and the axillary artery with a 6-18 MHz probe...
April 20, 2017: Rheumatology
https://www.readbyqxmd.com/read/28430714/ultrasound-molecular-imaging-of-inflammation-in-mouse-abdominal-aorta
#3
Shiying Wang, Sunil Unnikrishnan, Elizabeth B Herbst, Alexander L Klibanov, Frank William Mauldin, John A Hossack
OBJECTIVES: The aim of this study was to demonstrate a new clinically translatable ultrasound molecular imaging approach, modulated acoustic radiation force-based imaging, which is capable of rapid and reliable detection of inflammation as validated in mouse abdominal aorta. MATERIALS AND METHODS: Animal studies were approved by the Institutional Animal Care and Use Committee at the University of Virginia. C57BL/6 mice stimulated with tumor necrosis factor α, or fed with a high-fat diet, were used as inflammation (MInflammation) and diet-induced obesity (DIO) (MDIO) models, respectively...
April 20, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28430535/transcranial-focused-ultrasound-a-new-tool-for-non-invasive-neuromodulation
#4
Maria Fini, William J Tyler
Ultrasound (US) is widely known for its utility as a biomedical imaging modality. An abundance of evidence has recently accumulated showing that US is also useful for non-invasively modulating brain circuit activity. Through a series of studies discussed in this short review, it has recently become recognized that transcranial focused ultrasound can exert mechanical (non-thermal) bioeffects on neurons and cells to produce focal changes in the activity of brain circuits. In addition to highlighting scientific breakthroughs and observations that have driven the development of the field of ultrasonic neuromodulation, this study also provides a discussion of mechanisms of action underlying the ability of ultrasound to physically stimulate and modulate brain circuit activity...
April 21, 2017: International Review of Psychiatry
https://www.readbyqxmd.com/read/28429878/a-systematic-review-of-ultrasound-imaging-as-a-tool-for-evaluating-haemophilic-arthropathy-in-children-and-adults
#5
REVIEW
C C Ligocki, A Abadeh, K C Wang, T Adams-Webber, V S Blanchette, A S Doria
The purpose of this study was to semi-quantitatively assess the evidence on the value of ultrasound (US) for assessment of haemophilic arthropathy (HA) in children and adults based on the following questions: (1) Does early diagnosis of pathological findings, using available US techniques, impact the functional status of the joint? (2) Do current available US techniques have the ability to accurately detect pathological changes in target joints in haemophilic patients? (3) Does treatment (prophylaxis) improve US evidence of haemophilic arthropathy in children and adults? (4) Is there any association between various US scoring systems and other clinical/radiological constructs? Of the 6880 citations identified searching databases such as MEDLINE, Embase, CENTRAL and Web of Science, 20 articles investigating either the diagnostic accuracy of US and/or US scanning protocols and scoring systems for assessment of HA met the inclusion criteria for the study...
April 21, 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/28429575/recovery-from-talaromyces-marneffei-involving-the-kidney-in-a-renal-transplant-recipient-a-case-report-and-literature-review
#6
Juan Peng, Zhiyong Chen, Ruiming Cai, Xianen Huang, Liying Lin, Weixiang Liang, Zhongtang Xiong, Juan Chen, Hui Chen, Yuexin Yang, Shaoyan Liu, Qingping Jiang
Talaromyces marneffei is an emerging opportunistic infection among immunocompromised patients. We observe the first native case of disseminated T. marneffei involving the kidney in a renal transplant recipient in mainland China. We describe the comprehensive clinical course, and ultrasound imaging of renal transplant biopsy, pathologic images, and electron microscopy observation of the biopsy specimen, highlighting the relevance of biopsy findings and the blood culture. We also focus on the treatment and good outcome of the patient...
April 21, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28429490/contrast-enhanced-ultrasound-classification-of-previously-indeterminate-renal-lesions
#7
Jessica G Zarzour, Mark E Lockhart, Janelle West, Eric Turner, Bradford E Jackson, John V Thomas, Michelle L Robbin
OBJECTIVES: To determine the utility of contrast-enhanced ultrasound (US) for characterizing renal lesions that were indeterminate on prior imaging. METHODS: This Institutional Review Board-approved retrospective diagnostic accuracy study evaluated all patients who underwent renal contrast-enhanced US examinations from 2006 to 2015 at our tertiary care hospital. We compared the number of lesions definitively characterized by contrast-enhanced US with the indeterminate lesions by prior imaging...
April 21, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28429128/endophthalmitis-associated-with-purpureocillium-lilacinum-during-infliximab-treatment-for-surgically-induced-necrotizing-scleritis-successfully-treated-with-27-gauge-vitrectomy
#8
Masaaki Yoshida, Shunji Yokokura, Hiroshi Kunikata, Naoko Takada, Kazuichi Maruyama, Masahiro Toyokawa, Kazushi Kashio, Mitsuo Kaku, Toru Nakazawa
PURPOSE: To report a case of endophthalmitis associated with Purpureocillium lilacinum (P. lilacinum) during infliximab treatment for surgically induced necrotizing scleritis, successfully treated with 27-gauge vitrectomy. METHODS: A single case report. RESULTS: A 71-year-old man who had undergone immunosuppressive therapy, including infliximab, for surgically induced necrotizing scleritis (SINS) in his left eye complained of visual disturbance and eye pain in the eye...
April 20, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28428677/hypothyroidism-in-pediatric-population-bosnian-and-herzegovinian-situation
#9
Edo Hasanbegovic, Snijezana Hasanbegovic, Edin Begic
INTRODUCTION: Thyroid gland diseases in children are in second place by frequency among all endocrine disorders. When interpreting the results of the thyroid function assessment it should be taken into account the significant differences in the concentrations of TSH, thyroid hormones, thyroid binding proteins and calcitonin among children of different ages. GOAL: To present the age and sex structure of the patients diagnosed with hypothyroidism, evaluate diagnostic methods for making diagnosis, evaluation of etiology of hypothyroidism, with special review of the therapeutic modality...
February 2017: Medical Archives
https://www.readbyqxmd.com/read/28428648/ultrasound-of-ankles-in-the-diagnosis-of-complications-of-chikungunya-fever
#10
Roberto Mogami, João Luiz Pereira Vaz, Yêdda de Fátima Barcelos Chagas, Rodrigo Sperling Torezani, André de Almeida Vieira, Ana Célia Baptista Koifman, Yasmin Baptista Barbosa, Mirhelen Mendes de Abreu
OBJECTIVE: To describe the main ultrasound findings of chikungunya fever in the ankle. MATERIALS AND METHODS: This was a cross-sectional observational study involving 52 patients referred to the Hospital Universitário Pedro Ernesto and presenting with clinical and biochemical evidence of chikungunya fever. The examinations were performed by a radiologist with more than 20 years of experience in ultrasound. RESULTS: The predominant gender was female (in 88...
March 2017: Radiologia Brasileira
https://www.readbyqxmd.com/read/28427905/abdominal-aortic-aneurysm-screening-practices-impact-of-the-2014-u-s-preventive-services-task-force-recommendations
#11
Evan J Zucker, Alexander S Misono, Anand M Prabhakar
PURPOSE: To assess changes in abdominal aortic aneurysm (AAA) ultrasound screening associated with the release of revised U.S. Preventive Services Task Force (USPSTF) recommendations on June 24, 2014. METHODS: All AAA screening ultrasound examinations performed in the Massachusetts General Hospital radiology department in the 15 months before and after the new guidelines were retrospectively reviewed to assess changes in examination volume and appropriateness, demographics, aneurysm detection rate and size at diagnosis, frequency and type of incidental findings, and radiologist recommendations...
April 17, 2017: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/28427801/-multimodality-imaging-in-the-cardiac-catheterization-laboratory
#12
Karine Warin-Fresse, Sébastien Hascoet, Patrice Guérin
Cardiac catheterization has greatly contributed to the progress made in the management of congenital heart diseases (CHD). Initially used in diagnosis, it allowed the understanding of heart diseases, their anatomy and hemodynamics. Gradually, the development of interventional cardiology has played a major role in the management of these malformations (Patent ductus arteriosus [PDA] and atrial septal defect [ASD] closure, pulmonary dilatation, percutaneous pulmonary valve implantation…). The development of such technology was made possible through the concomitant development of imaging techniques: fluoroscopy, ultrasound, MRI and CT...
April 17, 2017: La Presse Médicale
https://www.readbyqxmd.com/read/28427768/syndrome-of-transient-headache-and-neurological-deficits-with-cerebrospinal-fluid-lymphocytosis-handl-in-a-patient-with-confusional-symptoms-diffuse-eeg-abnormalities-and-bilateral-vasospasm-in-transcranial-doppler-ultrasound-a-case-report-and-literature-review
#13
M Hidalgo de la Cruz, R Domínguez Rubio, E Luque Buzo, F Díaz Otero, P Vázquez Alén, J Orcajo Rincón, J Prieto Montalvo, A Contreras Chicote, F Grandas Pérez
INTRODUCTION: HaNDL syndrome (transient headache and neurological deficits with cerebrospinal fluid lymphocytosis) is characterised by one or more episodes of headache and transient neurological deficits associated with cerebrospinal fluid lymphocytosis. To date, few cases of HaNDL manifesting with confusional symptoms have been described. Likewise, very few patients with HaNDL and confusional symptoms have been evaluated with transcranial Doppler ultrasound (TCD). TCD data from patients with focal involvement reveal changes consistent with vasomotor alterations...
April 17, 2017: Neurología: Publicación Oficial de la Sociedad Española de Neurología
https://www.readbyqxmd.com/read/28427416/shoulder-ultrasonography-performed-by-orthopedic-surgeons-increases-efficiency-in-diagnosis-of-rotator-cuff-tears
#14
Chih-Hao Chiu, Poyu Chen, Alvin Chao-Yu Chen, Kuo-Yao Hsu, Shih-Sheng Chang, Yi-Sheng Chan, Yeung-Jen Chen
BACKGROUND: Rotator cuff tears are very common and their incidence increases with age. Shoulder ultrasonography has recently gained popularity in detecting rotator cuff tears because of its efficiency, cost-effectiveness, time-saving, and real-time nature of the procedure. Well-trained orthopedic surgeons may utilize shoulder ultrasonography to diagnose rotator cuff tears. The wait time of patients planned to have shoulder MRI (magnetic resonance imaging) to rule in rotator cuff tears may decrease after orthopedic surgeon start doing shoulder ultrasonography as a screening tool for that...
April 20, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28427411/tendon-motion-tracking-in-an-ultrasound-image-sequence-using-optical-flow-based-block-matching
#15
Bo-I Chuang, Jian-Han Hsu, Li-Chieh Kuo, I-Ming Jou, Fong-Chin Su, Yung-Nien Sun
BACKGROUND: Tendon motion, which is commonly observed using ultrasound imaging, is one of the most important features used in tendinopathy diagnosis. However, speckle noise and out-of-plane issues make the tracking process difficult. Manual tracking is usually time consuming and often yields inconsistent results between users. METHODS: To automatically track tendon motion in ultrasound images, we developed a new method that combines the advantages of optical flow and multi-kernel block matching...
April 20, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28427128/-the-application-value-of-contrast-enhanced-ultrasound-in-the-surgery-of-renal-masses
#16
M H Liu, J H Shi, Q M H Wangqi, Y Q Lin, Z X Sun
Objective: To investigate the clinical value of contrast-enhanced ultrasound in the diagnosis of renal masses. Methods: A total of 50 patients with renal masses who underwent partial nephrectomy were analyzed from January 2014 to October 2016 in the Department of Urology of China-Japan Union Hospital of Jilin University.In the intraoperative contrast-enhanced ultrasound, the characteristics of ultrasound imaging were recorded including location, size, boundary, echo, real-time internal and peripheral blood and renal pelvis distance, artery, guidance on the selection of surgical methods, intraoperative real-time estimation of the extent of tumor resection...
April 18, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28426815/using-controlled-attenuation-parameter-combined-with-ultrasound-to-survey-non-alcoholic-fatty-liver-disease-in-hemodialysis-patients-a-prospective-cohort-study
#17
Yi-Hao Yen, Jin-Bor Chen, Ben-Chung Cheng, Jung-Fu Chen, Kuo-Chin Chang, Po-Lin Tseng, Cheng-Kun Wu, Ming-Chao Tsai, Ming-Tsung Lin, Tsung-Hui Hu
BACKGROUND AND AIMS: Controlled attenuation parameter (CAP) is a non-invasive method for measuring hepatic steatosis (HS). Non-alcoholic fatty liver disease (NAFLD) is closely related to cardiovascular diseases (CVDs). CVDs are the leading cause of morbidity and mortality in hemodialysis patients. The aim of this study was to investigate the prevalence of NAFLD in hemodialysis patients. METHOD: We prospectively enrolled patients undergoing chronic hemodialysis, as well as patients with normal renal function who served as controls...
2017: PloS One
https://www.readbyqxmd.com/read/28426721/diagnosis-treatment-and-prognosis-of-small-bowel-volvulus-in-adults-a-monocentric-summary-of-a-rare-small-intestinal-obstruction
#18
Xiaohang Li, Jialin Zhang, Baifeng Li, Dehui Yi, Chengshuo Zhang, Ning Sun, Wu Lv, Ao Jiao
OBJECTIVES: Small bowel volvulus is a rare disease, which is also challenging to diagnose. The aims of this study were to characterize the clinical and radiological features associated with small bowel volvulus and treatment and to identify risk factors for associated small bowel necrosis. METHODS: Patients with small bowel volvulus who underwent operations from January 2001 to December 2015 at the First Affiliated Hospital of China Medical University (Shenyang, China) were reviewed...
2017: PloS One
https://www.readbyqxmd.com/read/28426149/click-chemistry-mediated-rapid-microbubble-catching-for-acute-thrombus-ultrasound-molecular-imaging
#19
Tuantuan Wang, Chuxiao Yuan, Bingyang Dai, Yang Liu, Mingxi Li, Zhenqiang Feng, Qing Jiang, Zhihong Xu, Ningwei Zhao, Ning Gu, Fang Yang
Bioorthogonal coupling chemistry has been studied as one significant advantage for molecular imaging as it offers rapid, efficient, and strong binding, which may also benefit in stability, production, and chemical conjugation. The inverse-electron-demand Diels-Alder reaction between s-tetrazine and trans-cyclooctene (TCO) is an example of a highly selective and rapid bioorthogonal coupling reaction to be used successfully to prepare targeted molecular imaging probes. Herein, based on a two-step pretargeting bioorthogonal chemistry, we report a fast and reliable highly sensitive approach to achieve activated-platelet-specific CD62p targeted thrombus ultrasound molecular imaging...
April 20, 2017: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/28425412/surveillance-for-hepatocellular-carcinoma-reduces-mortality-an-inverse-probability-of-treatment-weighted-analysis
#20
Roongruedee Chaiteerakij, Piyanat Chattieng, Jonggi Choi, Nutcha Pinchareon, Kessirin Thanapirom, Nopavut Geratikornsupuk
BACKGROUND: Evidence supporting benefit of hepatocellular carcinoma (HCC) surveillance in reducing mortality is not well-established. The effect of HCC surveillance in reducing mortality was assessed by an inverse probability of treatment weighting (IPTW)-based analysis controlled for inherent bias and confounders in observational studies. MATERIAL AND METHODS: This retrospective cohort study was conducted on 446 patients diagnosed with HCC between 2007 and 2013 at a major referral center...
May 2017: Annals of Hepatology
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