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https://www.readbyqxmd.com/read/28806321/liver-imaging-reporting-and-data-system-discordance-between-computed-tomography-and-gadoxetate-enhanced-magnetic-resonance-imaging-for-detection-of-hepatocellular-carcinoma-major-features
#1
Victoria Chernyak, Milana Flusberg, Amy Law, Mariya Kobi, Viktoriya Paroder, Alla M Rozenblit
PURPOSE: The goal of this study was to compare agreement between computed tomography (CT) and magnetic resonance imaging (MRI) in the evaluation of the major Liver Imaging Reporting and Data System (LI-RADS) features used in assessment of hepatocellular carcinoma: arterial phase hyperenhancement (APHE), portal venous phase washout (WO), capsule appearance (capsule), and largest diameter (diameter). METHODS: Patients with liver protocol CT and gadoxetate-enhanced MRI within 1 month of each other and at least 1 discrete untreated liver lesion were included...
August 12, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28806246/response-assessment-of-223ra-treatment-should-a-fluorocholine-pet-ct-be-performed
#2
Ana María García Vicente, Ángel Soriano Castrejón, Ruth Alvarez Cabellos, Belén Sanchez Gil, Nicolás Mohedano Mohedano
We present 3 cases of patients with castration-resistant prostate cancer and bone metastases treated with Ra, belonging to our prospective and multicenter ChoPET-Rad study. All patients underwent clinical, hematological, and biochemical monitoring between each Ra administration. Initial and follow-up F-fluorocholine PET/CT and Tc-biphosphonate bone scintigraphy were performed previously and after the third Ra administration. Both techniques correctly established the response to treatment, in agreement to the biochemical response, although differences in the disease expression (concordant and discordant patterns) were found because of the different radiotracer biodistribution and molecular information derived from them...
August 12, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28804937/breast-tumor-classification-based-on-a-computerized-breast-imaging-reporting-and-data-system-feature-system
#3
Mengyun Qiao, Yuzhou Hu, Yi Guo, Yuanyuan Wang, Jinhua Yu
OBJECTIVES: This work focused on extracting novel and validated digital high-throughput features to present a detailed and comprehensive description of the American College of Radiology Breast Imaging Reporting and Data System (BI-RADS) with the goal of improving the accuracy of ultrasound breast cancer diagnosis. METHODS: First, the phase congruency approach was used to segment the tumors automatically. Second, high-throughput features were designed and extracted on the basis of each BI-RADS category...
August 14, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28801603/identifying-the-tilt-angle-and-correcting-the-orbital-angular-momentum-spectrum-dispersion-of-misaligned-light-beam
#4
Peng Zhao, Shikang Li, Yu Wang, Xue Feng, Cui Kaiyu, Liu Fang, Wei Zhang, Yidong Huang
The axis tilt of light beam in optical system would introduce the dispersion of orbital angular momentum (OAM) spectrum. To deal with it, a two-step method is proposed and demonstrated. First, the tilt angle of optical axis is identified with a deduced relation between the tilt angle and the variation of OAM topological charges with different reference axes, which is obtained with the help of a charge coupled device (CCD) camera. In our experiments, the precision of measured tilt angle is about 10(-4) rad with topological charges of -3~3...
August 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28801296/-efficacy-of-ultrasound-guided-vacuum-assisted-mammotome-excision-for-management-of-benign-breast-diseases-analysis-of-1267-cases
#5
Shu Liu, Jia-Li Zou, Fu-Lin Zhou, Yan-Man Fang
OBJECTIVE: To assess the clinical value of ultrasound-guided vacuum-assisted Mammotome (MMT) system for surgical resection of benign breast disease. METHODS: This retrospective study was conducted among 1267 patients who underwent minimally invasive surgery with ultrasound-guided MMT system for benign breast disease at our center between January, 2009 and January, 2014. The resection rate, incidence of complication, recurrence rate, patients' satisfaction, clinical follow-up results and risk factors were analyzed...
August 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28801291/-value-of-pi-rads-v2-scores-combined-with-prostate-specific-antigen-in-diagnosis-of-peripheral-zone-prostate-cancer-a-logistic-regression-analysis
#6
Li-Zhi Lei, Yi-Kai Xu, Mei-Rong Hou, Meng-Qi He
OBJECTIVE: To assess the value of Prostate Imaging and Reporting and Data System: Version 2 (PI-RADS v2) combined with prostate specific antigen (PSA) in the diagnosis of peripheral zone (PZ) prostate cancer (PCa). METHODS: The preoperative magnetic resonance imaging and PSA data were ananlyzed for 69 patients with pathologically confirmed PCa and 109 non-PCa patients. PI-RADS v2 scores (1-5) was used to evaluate the risk of PZ PCa. The total PSA (tPSA) level, free to total PSA ratio (f/t PSA), PSA density (PSAD), PZ-PSAD and PI-RADS v2 scores were compared between the PCa and non-PCa patients...
August 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28801025/toward-an-mri-based-nomogram-for-the-prediction-of-transperineal-prostate-biopsy-outcome-a-physician-and-patient-decision-tool
#7
Su-Min Lee, Sidath H Liyanage, Wahyu Wulaningsih, Konrad Wolfe, Thomas Carr, Choudhry Younis, Mieke Van Hemelrijck, Rick Popert, Peter Acher
PURPOSE: To develop and internally validate a nomogram using biparametric magnetic resonance imaging (B-MRI)-derived variables for the prediction of prostate cancer at transperineal sector-guided prostate biopsy (TPSB). SUBJECTS/PATIENTS AND METHODS: Consecutive patients referred to our institution with raised prostate-specific antigen (PSA), abnormal prostate examination, or persistent suspicion of prostate cancer after previous transrectal biopsy between July 2012 and November 2015 were reviewed from a prospective database...
August 8, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/28797178/mri-fusion-targeted-transrectal-prostate-biopsy-and-the-role-of-prostate-specific-antigen-density-and-prostate-health-index-for-the-detection-of-clinically-significant-prostate-cancer-in-southeast-asian-men
#8
Teck Wei Tan, Keng Siang Png, Chau Hung Lee, Arianto Yuwono, Yuyi Yeow, Kian-Tai Chong, Yee Mun Lee, Cher Heng Tan, Yung Khan Tan
OBJECTIVES: To test the hypothesis that targeted biopsy has a higher detection rate for clinically significant prostate (csPCa) than systematic biopsy. We defined csPCa as any Gleason sum ≥ 7 cancer. In patients with Prostate Imaging - Reporting and Data System (PI-RADS) 3 lesions, to determine if factors such as PSA density (PSAD) and prostate health index (PHI) can predict csPCa and help select patients for biopsy. MATERIALS AND METHODS: We report the first series of targeted biopsies in Southeast Asian men, with comparison against systematic biopsy...
August 11, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28796549/association-of-brca-mutation-types-imaging-features-and-pathologic-findings-in-patients-with-breast-cancer-with-brca1-and-brca2-mutations
#9
Su Min Ha, Eun Young Chae, Joo Hee Cha, Hak Hee Kim, Hee Jung Shin, Woo Jung Choi
OBJECTIVE: The purpose of this study is to retrospectively evaluate the relationships between the BRCA mutation types, imaging features, and pathologic findings of breast cancers in BRCA1 and BRCA2 mutation carriers. MATERIALS AND METHODS: We identified patients with breast cancer with BRCA gene mutations from January 2000 to December 2014. After excluding patients who underwent lesion excision before MRI, 99 BRCA1 and 103 BRCA2 lesions in 187 women (mean age, 39...
August 10, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28796548/changes-in-breast-density-reporting-patterns-of-radiologists-after-publication-of-the-5th-edition-bi-rads-guidelines-a-single-institution-experience
#10
Abid Irshad, Rebecca Leddy, Madelene Lewis, Abbie Cluver, Susan Ackerman, Dag Pavic, Heather Collins
OBJECTIVE: The objective of our study was to determine the impact of 5th edition BI-RADS breast density assessment guidelines on density reporting patterns in our clinical practice. MATERIALS AND METHODS: PenRad reporting system was used to collect mammographic breast density data reported by five radiologists: 16,907 density assignments using 5th edition BI-RADS guidelines were compared with 19,066 density assessments using 4th edition guidelines. Changes in the density assessment pattern were noted between the 4th and 5th edition guidelines, and agreement in density distribution was compared using the intraclass correlation coefficient...
August 10, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28794287/point-of-care-ultrasonography-is-it-time-nephrologists-were-equipped-with-the-21th-century-s-stethoscope
#11
Afagh Hassanzadeh Rad, Hamidreza Badeli
In the past 3 decades, ultrasonography has gifted internal organs visualization to physicians to have a better detection of various diseases. Previously performed solely by radiologists as a method with high feasibility and accuracy, recently ultrasonography is being recommended and used by many other physicians in practice. Ultrasonography not only can be used to diagnose and manage kidney diseases, but also is an essential tool in nephrology for the guidance of invasive procedures. This method of bedside ultrasonography by physicians in real time is called point-of-care ultrasonography (POCUS)...
July 2017: Iranian Journal of Kidney Diseases
https://www.readbyqxmd.com/read/28792802/utility-of-bi-rads-assessment-category-4-subdivisions-for-screening-breast-mri
#12
Roberta M Strigel, Elizabeth S Burnside, Mai Elezaby, Amy M Fowler, Frederick Kelcz, Lonie R Salkowski, Wendy B DeMartini
OBJECTIVE: BI-RADS for mammography and ultrasound subdivides category 4 assessments by likelihood of malignancy into categories 4A (> 2% to ≤ 10%), 4B (> 10% to ≤ 50%), and 4C (> 50% to < 95%). Category 4 is not subdivided for breast MRI because of a paucity of data. The purpose of the present study is to determine the utility of categories 4A, 4B, and 4C for MRI by calculating their positive predictive values (PPVs) and comparing them with BI-RADS-specified rates of malignancy for mammography and ultrasound...
June 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28792730/rough-adhesive-hydrogels-rad-gels-for-underwater-adhesion
#13
Laura C Bradley, Nathan D Bade, Lisa Mariani, Kevin T Turner, Daeyeon Lee, Kathleen J Stebe
In this work, underwater adhesion is achieved between biocompatible hydrogels and a suite of substrates. Surface roughness, which is typically detrimental for adhesion in air, is shown to be beneficial for underwater adhesion. Contact between the hydrogels with macroscopically flat substrates, and the resulting non-specific chemical interaction, is facilitated by surface roughness, which enables drainage of the lubricating fluid layer. Hydrogel composition plays an important role in tuning the gel elasticity and interaction with the substrate...
August 9, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28791056/accuracy-of-different-topographic-instruments-in-calculating-corneal-power-after-myopic-photorefractive-keratectomy
#14
Alireza Baradaran-Rafii, Sahba Fekri, Mohammad Rezaie, Shahram Salehi-Rad, Ali Moradi, Tahmineh Motevasseli, Masumeh Kalantarion
PURPOSE: To compare the corneal power measurements obtained using different topographic instruments after myopic photorefractive keratectomy (PRK). METHODS: Patients with myopia who were candidates for corneal refractive surgery were sequentially included. Pre-PRK and six months post-PRK corneal powers were measured using Javal manual keratometer, Orbscan II, Galilei, Tomey TMS4, and EyeSys 2000 topographers. Measured values were compared with those obtained using the clinical history method (CHM)...
July 2017: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/28789542/intracavity-faraday-modulation-spectroscopy-infamos-a-tool-for-radical-detection
#15
Michele Gianella, Tomas H P Pinto, Xia Wu, Grant A D Ritchie
We present the intra-cavity Faraday modulation spectroscopy technique, whereby optical feedback cavity-enhanced spectroscopy is coupled with Faraday modulation spectroscopy to greatly enhance the interaction path length of a laser beam with a paramagnetic sample in a magnetic field. We describe a first prototype based upon a cw quantum cascade laser targeting a selection of fundamental rovibrational R-branch transitions of nitric oxide (1890 cm(-1)), consisting of a linear cavity (finesse F=6300) and a water-cooled solenoid...
August 7, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28783931/low-retinal-dehydrogenase-1-raldh1-level-in-prepubertal-boys-with-autism-spectrum-disorder-a-possible-link-to-dopamine-dysfunction
#16
Denis Pavăl, Florina Rad, Răzvan Rusu, Alexandru-Ştefan Niculae, Horaţiu Alexandru Colosi, Iuliana Dobrescu, Eleonora Dronca
Objective: Retinal dehydrogenase 1 (RALDH1) is a cytosolic enzyme which acts both as a source of retinoic acid (RA) and as a detoxification enzyme. RALDH1 has key functions in the midbrain dopaminergic system, which influences motivation, cognition, and social behavior. Since dopamine has been increasingly linked to autism spectrum disorder (ASD), we asked whether RALDH1 could contribute to the autistic phenotype. Therefore, we investigated for the first time the levels of RALDH1 in autistic patients...
August 31, 2017: Clinical Psychopharmacology and Neuroscience: the Official Scientific Journal of the Korean College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28782803/genomic-analyses-suggest-parallel-ecological-divergence-in-heliosperma-pusillum-caryophyllaceae
#17
Emiliano Trucchi, Božo Frajman, Thomas H A Haverkamp, Peter Schönswetter, Ovidiu Paun
The mosaic distribution of interbreeding taxa with contrasting ecology and morphology offers an opportunity to study microevolutionary dynamics during ecological divergence. We investigate here the evolutionary history of an alpine and a montane ecotype of Heliosperma pusillum (Caryophyllaceae) in the south-eastern Alps. From six pairs of geographically close populations of the two ecotypes (120 individuals) we obtained a high-coverage restriction site associated DNA sequencing (RADseq) dataset that was used for demographic inference to test the hypothesis of parallel evolution of the two ecotypes...
August 7, 2017: New Phytologist
https://www.readbyqxmd.com/read/28782167/plants-of-the-melaleuca-genus-as-antimicrobial-agents-from-farm-to-pharmacy
#18
REVIEW
Javad Sharifi-Rad, Bahare Salehi, Elena Maria Varoni, Farukh Sharopov, Zubaida Yousaf, Seyed Abdulmajid Ayatollahi, Farzad Kobarfard, Mehdi Sharifi-Rad, Mohammad Hossain Afdjei, Majid Sharifi-Rad, Marcello Iriti
Plants belonging to Melaleuca genus (Myrtaceae family) are native to Oceania, where they have been used for ages by Aborigine people in Australian traditional medicine, mainly because of their broad-spectrum antimicrobial activity. Although, M. linariifolia, M. dissitiflora, and other species of Melaleuca can also be used, the tea tree oil, an essential oil obtained from M. alternifolia shows the longest history of medicinal uses. Tea tree oil contains for the 80-90% several monoterpenes (terpinen-4-ol, α-terpinene, 1,8-cineol, p-cymene, α-terpineol, α-pinene, terpinolene, limonene, and sabinene)...
August 7, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28781103/the-need-for-standardization-of-musculoskeletal-practice-reporting-learning-from%C3%A2-acr-bi-rads-liver-imaging-reporting-and-data-system-and-prostate-imaging-reporting-and-data-system
#19
Ali Gholamrezanezhad, Michael Kessler, Seyed Mohammadreza Hayeri
No abstract text is available yet for this article.
August 3, 2017: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/28780680/mri-for-hepatocellular-carcinoma-a-primer-for-magnetic-resonance-imaging-interpretation
#20
REVIEW
Tina Sanghvi, James Boyum, Ben Spilseth, Robben Schat, Heather Estby, Andrew Taylor
Hepatocellular carcinoma is among the most prevalent solid organ cancers, and, unlike many cancers, may be diagnosed non-invasively by imaging criteria [1] with the preferred modality recently shifting from multiphasic computed tomography (MDCT) to magnetic resonance imaging (MRI). The purpose of this article is to help facilitate radiologists and radiology trainees in the transition to MRI by providing a step-wise approach to exam interpretation to improve the MRI detection of HCC. A methodical, consistent approach to navigating a HCC screening MRI exam, in conjunction with the LI-RADS framework for characterization, should lead to improved HCC detection and diagnosis...
August 5, 2017: Abdominal Radiology
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