keyword
MENU ▼
Read by QxMD icon Read
search

Image interpretation

keyword
https://www.readbyqxmd.com/read/28445682/atrial-fibrillation-diagnostic-accuracy-of-coronary-ct-angiography-performed-with-a-whole-heart-230-%C3%A2%C2%B5m-spatial-resolution-ct-scanner
#1
Daniele Andreini, Gianluca Pontone, Saima Mushtaq, Edoardo Conte, Marco Perchinunno, Marco Guglielmo, Valentina Volpato, Andrea Annoni, Andrea Baggiano, Alberto Formenti, Maria Elisabetta Mancini, Virginia Beltrama, Valentina Ditali, Alessandro Campari, Cesare Fiorentini, Antonio L Bartorelli, Mauro Pepi
Purpose To assess image quality, interpretability, diagnostic accuracy, and radiation exposure of a computed tomography (CT) scanner with 16-cm coverage and 230-µm spatial resolution at coronary artery evaluation in patients with atrial fibrillation (AF) by using invasive coronary angiography (ICA) as the reference method and to compare the results with those obtained in patients with sinus rhythm (SR). Materials and Methods Written informed consent and institutional ethics committee approval were obtained...
April 26, 2017: Radiology
https://www.readbyqxmd.com/read/28445308/clinical-value-of-radionuclide-shuntography-by-qualitative-methods-in-hydrocephalic-adult-patients-with-suspected-ventriculoperitoneal-shunt-malfunction
#2
Szu-Ying Tsai, Shan-Ying Wang, Yu-Chien Shiau, Lin-Hsue Yang, Yen-Wen Wu
To determine the clinical value of radionuclide shuntography in the evaluation of adult hydrocephalic patients with suspected ventriculoperitoneal (V-P) shunt malfunction. All adult patients who underwent Tc-99m diethylenetriamine pentaacetic acid shuntographic scans at Far Eastern Memorial Hospital between August 2005 and December 2015 were included. Shuntographic results were visually evaluated in a simple qualitative manner: prompt flow that reached the peritoneum on 30-minute early images and diffuse peritoneal tracer distribution on 2-hour delayed images were interpreted as nonobstructive shunt flow...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28444825/3-tesla-magnetic-resonance-imaging-study-of-the-normal-canine-femoral-and-sciatic-nerves
#3
Christine Sievert, Henning Richter, Dominic Gascho, Patrick R Kircher, Inés Carrera
Understanding the normal course and optimizing visualization of the canine peripheral nerves of the lumbar plexus, in particular the sciatic and the femoral nerves, is essential when interpreting images of patients with suspected peripheral neuropathies such as inflammatory or neoplastic conditions. The purpose of this prospective, anatomic study was to describe the magnetic resonance imaging (MRI) anatomy of the normal canine femoral and sciatic nerves and to define the sequences in which the nerves are best depicted...
April 25, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28444321/evidence-of-altered-brain-responses-to-nicotine-in-an-animal-model-of-adhd
#4
Guillaume L Poirier, Wei Huang, Kelly Tam, Joseph R DiFranza, Jean A King
Introduction: Individuals with attention deficit/hyperactivity disorder (ADHD) are susceptible to earlier and more severe nicotine addiction. To shed light on the relationship between nicotine and ADHD, we examined nicotine's effects on functional brain networks in an animal model of ADHD. Methods: Awake magnetic resonance imaging was used to compare functional connectivity in adolescent (postnatal day 44±2) males of the Spontaneously Hypertensive Rat (SHR) strain and two control strains, Wistar Kyoto and Sprague Dawley (n = 16 each)...
April 22, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28444235/right-hemisphere-structural-adaptation-and-changing-language-skills-years-after-left-hemisphere-stroke
#5
Thomas M H Hope, Alex P Leff, Susan Prejawa, Rachel Bruce, Zula Haigh, Louise Lim, Sue Ramsden, Marion Oberhuber, Philipp Ludersdorfer, Jenny Crinion, Mohamed L Seghier, Cathy J Price
Stroke survivors with acquired language deficits are commonly thought to reach a 'plateau' within a year of stroke onset, after which their residual language skills will remain stable. Nevertheless, there have been reports of patients who appear to recover over years. Here, we analysed longitudinal change in 28 left-hemisphere stroke patients, each more than a year post-stroke when first assessed-testing each patient's spoken object naming skills and acquiring structural brain scans twice. Some of the patients appeared to improve over time while others declined; both directions of change were associated with, and predictable given, structural adaptation in the intact right hemisphere of the brain...
April 24, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28443163/using-magnetic-resonance-myelography-to-improve-interobserver-agreement-in-the-evaluation-of-lumbar-spinal-canal-stenosis-and-root-compression
#6
Haider Najim Al-Tameemi, Sattar Al-Essawi, Mahmud Shukri, Farah Kasim Naji
STUDY DESIGN: Cross-sectional retrospective study designed to assess interobserver agreement. PURPOSE: To investigate if interobserver agreement using magnetic resonance imaging (MRI) in the evaluation of lumbar spinal canal stenosis and root compression can be improved upon combination with magnetic resonance myelography (MRM). OVERVIEW OF LITERATURE: The interpretation of lumbar spinal MRI, which is the imaging modality of choice, often has a significant influence on the diagnosis and treatment of low back pain...
April 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/28442514/cd3-and-cd20-immunohistochemical-staining-patterns-of-bone-marrow-infiltrating-malignant-lymphoma-cells
#7
Eun Jin Lee, Miyoung Kim, Han-Sung Kim, Hee Jung Kang, Hyo Jung Kim, Soo Kee Min, Young Kyung Lee
OBJECTIVES: It is known that CD3 and CD20 are homogenously expressed in T lineage and B lineage lymphoma, respectively; however, there are no standard guidelines to interpret immunohistochemistry findings. In this study, we investigated CD3 and CD20 immunohistochemical staining patterns of bone marrow (BM)-infiltrating lymphoma cells. METHODS: Among 297 patients diagnosed with malignant lymphoma, the BM biopsy slides of all 39 cases found to have BM infiltration (T lineage: 11; B lineage: 28) were reviewed...
March 2017: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/28441538/real-time-observation-of-cascaded-electronic-relaxation-processes-in-p-fluorotoluene
#8
Qiaoli Hao, Xulan Deng, Jinyou Long, Yanmei Wang, Bumaliya Abulimiti, Bing Zhang
Ultrafast electronic relaxation processes following two photoexcitation of 400nm in p-Fluorotoluene (pFT) have been investigated utilizing time-resolved photoelectron imaging coupled with time-resolved mass spectroscopy. Cascaded electronic relaxation processes started from the electronically excited S2 state are directly imaged in real time and well characterized by two distinct time constants of ~85±10fs and 2.4±0.3ps. The rapid component corresponds to the lifetime of the initially excited S2 state, including the structure relaxation from the Franck-Condon region to the conical intersection of S2/S1 and the subsequent internal conversion to the highly excited S1 state...
April 19, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28441366/time-spent-by-breast-imaging-radiologists-to-perform-value-added-activities-at-an-academic-cancer-center
#9
Fernando Collado-Mesa, Geetika Klevos, Kristopher Arheart, James Banks, Monica Yepes, Jose Net
BACKGROUND: Health care reform in the United States has generated a paradigm shift in the practice of radiology aimed at increasing the degree of patient-centered care. We conducted a study to quantify the amount of time breast imaging radiologists spend on value-added activities at an academic comprehensive cancer center located in Miami, Florida, and accredited by the American College of Radiology as a Breast Imaging Center of Excellence. METHODS: A prospective, observational study was conducted during a period of 20 consecutive workdays...
April 2017: Cancer Control: Journal of the Moffitt Cancer Center
https://www.readbyqxmd.com/read/28441235/noninvasive-iphone-measurement-of-left-ventricular-ejection-fraction-using-intrinsic-frequency-methodology
#10
Niema M Pahlevan, Derek G Rinderknecht, Peyman Tavallali, Marianne Razavi, Thao T Tran, Michael W Fong, Robert A Kloner, Marie Csete, Morteza Gharib
OBJECTIVE: The study is based on previously reported mathematical analysis of arterial waveform that extracts hidden oscillations in the waveform that we called intrinsic frequencies. The goal of this clinical study was to compare the accuracy of left ventricular ejection fraction derived from intrinsic frequencies noninvasively versus left ventricular ejection fraction obtained with cardiac MRI, the most accurate method for left ventricular ejection fraction measurement. DESIGN: After informed consent, in one visit, subjects underwent cardiac MRI examination and noninvasive capture of a carotid waveform using an iPhone camera (The waveform is captured using a custom app that constructs the waveform from skin displacement images during the cardiac cycle...
April 22, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28440899/lissencephaly-expanded-imaging-and-clinical-classification
#11
Nataliya Di Donato, Sara Chiari, Ghayda M Mirzaa, Kimberly Aldinger, Elena Parrini, Carissa Olds, A James Barkovich, Renzo Guerrini, William B Dobyns
Lissencephaly ("smooth brain," LIS) is a malformation of cortical development associated with deficient neuronal migration and abnormal formation of cerebral convolutions or gyri. The LIS spectrum includes agyria, pachygyria, and subcortical band heterotopia. Our first classification of LIS and subcortical band heterotopia (SBH) was developed to distinguish between the first two genetic causes of LIS-LIS1 (PAFAH1B1) and DCX. However, progress in molecular genetics has led to identification of 19 LIS-associated genes, leaving the existing classification system insufficient to distinguish the increasingly diverse patterns of LIS...
April 25, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28440860/doppler-ultrasonographic-measurement-of-short-term-effects-of-valsalva-maneuver-on-retrobulbar-blood-flow
#12
Sabit Kimyon, Ahmet Mete, Alper Mete, Duçem Mete
BACKGROUND: To investigate the effects of Valsalva maneuver (VM) on retrobulbar blood flow parameters in healthy subjects. METHODS: Participants without any ophthalmologic or systemic pathology were examined in supine position with color and pulsed Doppler imaging for blood flow measurement, via a paraocular approach, in the ophthalmic artery (OA), central retinal artery (CRA), central retinal vein (CRV), nasal posterior ciliary artery (NPCA), and temporal posterior ciliary artery (TPCA), 10 seconds after a 35- to 40-mm Hg expiratory pressure was reached...
April 25, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/28440650/comprehensive-computational-and-experimental-analysis-of-biomaterial-towards-the-behavior-of-imidazolium-based-ionic-liquids-an-interplay-between-hydrophilic-and-hydrophobic-interactions
#13
Reddicherla Umapathi, Suresh B Vepuri, Pannuru Venkatesu, Mahmoud E S Soliman
To provide insights into the aggregation behavior, hydration tendency and variation in phase transition temperature produced by the addition of ionic liquids (ILs) to poly(N-isopropylacrylamide) (PNIPAM) aqueous solution, systematic physicochemical studies, and molecular dynamic simulations were carried out. The influence of ILs possessing same [Cl]- anion and a set of cation [Cnmim]+ with increasing alkyl chain length such as 1-ethyl-3-methylimidazolium ([Emim]+), 1-allyl-3-methylimidazolium ([Amim]+), 1-butyl-3-methylimidazolium ([Bmim]+), 1-hexyl-3-methylimidazolium ([Hmim]+), 1-benzyl-3-methylimidazolium ([Bzmim]+), and 1- decyl-3-methylimidazolium ([Dmim] +) on the phase transition of PNIPAM was monitored by the aid of UV-visible absorption spectra, fluorescence intensity spectra, viscosity (ɳ), dynamic light scattering (DLS) and Fourier transform infrared (FTIR) spectroscopy...
April 25, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28440358/ultrasonographic-evaluation-of-acute-pelvic-pain-in-pregnant-and-postpartum-period
#14
Sung Bin Park, Byoung Hee Han, Young Ho Lee
Acute pelvic pain in pregnant and postpartum patients presents diagnostic and therapeutic challenges. The interpretation of imaging findings in these patients is influenced by the knowledge of the physiological changes that occur during the pregnant and postpartum period, as well as by the clinical history. Ultrasonography remains the primary imaging investigation of the pregnant and postpartum women. This article describes the causes and imaging features of acute pelvic pain in pregnant and postpartum period and suggests characteristics to such diseases, focusing on the ultrasonography features that allow one to arrive at the corrective diagnosis...
April 22, 2017: Medical Ultrasonography
https://www.readbyqxmd.com/read/28439784/practical-calculation-method-to-estimate-the-absolute-boron-concentration-in-tissues-using-18-f-fbpa-pet
#15
Tadashi Watabe, Kohei Hanaoka, Sadahiro Naka, Yasukazu Kanai, Hayato Ikeda, Masanao Aoki, Eku Shimosegawa, Mitsunori Kirihata, Jun Hatazawa
PURPOSE: The purpose of this study was to establish a practical method to estimate the absolute boron concentrations in the tissues based on the standardized uptake values (SUVs) after administration of 4-borono-phenylalanine (BPA) using 4-borono-2-(18)F-fluoro-phenylalanine ((18)F-FBPA) PET. METHODS: Rat xenograft models of C6 glioma (n = 7, body weight 241 ± 28.0 g) were used for the study. PET was performed 60 min after intravenous injection of (18)F-FBPA (30...
April 24, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28439430/mistakes-in-ultrasound-diagnosis-of-superficial-lymph-nodes
#16
REVIEW
Ewa J Białek, Wiesław Jakubowski
The article discusses basic mistakes that can occur during ultrasound imaging of superficial lymph nodes. Ultrasound is the first imaging method used in the diseases of superficial organs and tissues, including lymph nodes. The causes of mistakes can be either dependent or independent of the performing physician. The first group of mistakes includes inappropriate interpretation of images of anatomical structures, while the latter group includes, among other things, similar ultrasound images of different pathologies...
March 2017: Journal of Ultrasonography
https://www.readbyqxmd.com/read/28439324/contemporary-diagnostic-imaging-of-oral-squamous-cell-carcinoma-a-review-of-literature
#17
REVIEW
Paulina Pałasz, Łukasz Adamski, Magdalena Górska-Chrząstek, Anna Starzyńska, Michał Studniarek
Oral squamous cell carcinoma (OSCC) is the most common cancer of the oral cavity and constitutes 95% of all cancers of this area. Men are affected twice as commonly as women, primarily if they are over 50 years of age. Forty percent of the lesions are localized in the tongue and 30% in the floor of the oral cavity. OSCC often affects upper and lower gingiva, buccal mucous membrane, the retromolar triangle and the palate. The prognosis is poor and the five-year survival rate ranges from 20% (OSCC in the floor of the mouth) to 60% (OSCC in the alveolar part of the mandible)...
2017: Polish Journal of Radiology
https://www.readbyqxmd.com/read/28438867/magnetic-resonance-imaging-assessment-of-lipomatous-soft-tissue-tumors
#18
Alessandro Coran, Paolo Ortolan, Shady Attar, Enrico Alberioli, Egle Perissinotto, Anna Lisa Tosi, Maria Cristina Montesco, Carlo Riccardo Rossi, Saveria Tropea, Marco Rastrelli, Roberto Stramare
AIM: To establish the accuracy of magnetic resonance imaging (MRI) in distinguishing between benign and malignant lipomatous tumors; to evaluate the reproducibility of the MRI interpretation assessing the agreement between judgments of two radiologists with the same experience in soft-tissue sarcomas; to identify an association among MRI findings (size, depth, septa, nodules, signal homogeneity) and nature of the lesion. MATERIALS AND METHODS: A total of 54 patients (28 men and 26 women), with a mean age of 56 (range=27-84) were included years...
May 2017: In Vivo
https://www.readbyqxmd.com/read/28438675/integrating-cell-biology-and-proteomic-approaches-in-plants
#19
Tomáš Takáč, Olga Šamajová, Jozef Šamaj
Significant improvements of protein extraction, separation, mass spectrometry and bioinformatics nurtured advancements of proteomics during the past years. The usefulness of proteomics in the investigation of biological problems can be enhanced by integration with other experimental methods from cell biology, genetics, biochemistry, pharmacology, molecular biology and other omics approaches including transcriptomics and metabolomics. This review aims to summarize current trends integrating cell biology and proteomics in plant science...
April 21, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28438322/water-fat-dixon-sequences-in-the-evaluation-of-breast-implants-proposal-of-a-time-effective-rapid-approach-in-the-clinical-practice
#20
M Marcon, A S Becker, E J Ulbrich, T Frauenfelder, A Boss
AIM: To evaluate the diagnostic accuracy achieved from a fat-water Dixon sequence alone compared to a combination of a silicone-specific magnetic resonance imaging (MRI) sequence and a water-specific MRI sequence in the assessment of breast implants. MATERIALS AND METHODS: In this institutional review board (IRB)-approved study the integrity of breast implants was assessed retrospectively in 27 patients undergoing breast MRI at 3 T. A qualitative evaluation of (set 1) a silicon-selective water-saturated short tau inversion recovery (STIR) sequence in combination with a water-only Dixon dataset (total acquisition time 7 minutes 17 seconds), and of (set 2) fat-only and water-only Dixon datasets (4 minutes 8 seconds) was performed by two readers independently evaluating the following features: margin definition of the implant, water suppression homogeneity, image quality, presence of artefacts and their effects on the imaging interpretation, and diagnostic confidence...
April 21, 2017: Clinical Radiology
keyword
keyword
60151
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"