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Diagnostic imaging

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https://www.readbyqxmd.com/read/29346832/diagnosis-of-lumbar-spinal-stenosis-with-functional-myelography
#1
Matthias Morgalla, Sandra Frantz, Roberto Alexandre Dezena, Carlos Umberto Pereira, Marcos Tatagiba
BACKGROUND AND STUDY AIMS:  The diagnosis of a lumbar spinal stenosis demands advanced diagnostic radiologic techniques. In recent decades magnetic resonance imaging (MRI) has replaced myelography, now considered an old-fashioned technique. It was our hypothesis that functional myelography still plays an important role in selected cases. We investigated how our surgical strategy was influenced by the results of MRI, functional myelography, and postmyelography computed tomography (CT) in patients with a lumbar spinal stenosis...
January 18, 2018: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/29346246/comparison-of-diagnostic-potential-of-narrow-band-imaging-bronchoscopy-over-white-light-bronchoscopy-in-lung-cancer
#2
Manish Advani, Gopal Purohit, Sunil Vyas, Jyoti Kumari
BACKGROUND: Worldwide, lung cancer is the largest contributor to new cancer diagnoses and to death from cancer. Narrow band imaging (NBI) is a novel bronchoscopic technique which enables detailed examination of submucosal microcapillary grid and showed great potential in early detection of malignant lesions of the bronchial mucosa. The aim of this study was to compare diagnostic potential of NBI bronchoscopy over white light (WL) bronchoscopy in lung cancer. METHODS: We enrolled 187 patients having clinical and radiologic findings highly suspicious of lung cancer...
January 16, 2018: Journal of Bronchology & Interventional Pulmonology
https://www.readbyqxmd.com/read/29346217/pathological-and-molecular-aspects-to-improve-endoscopic-ultrasonography-guided-fine-needle-aspiration-from-solid-pancreatic-lesions
#3
Hiroyuki Matsubayashi, Keiko Sasaki, Sachiyo Ono, Masato Abe, Hirotoshi Ishiwatari, Akira Fukutomi, Katsuhiko Uesaka, Hiroyuki Ono
Endoscopic ultrasonography-guided fine-needle aspiration (EUS-FNA) has been applied to pancreatic lesions since the 1990s, and its use is now widespread. Improvements in endoscopic devices and sampling techniques have resulted in excellent diagnostic ability for solid pancreatic lesions. However, clinical improvements alone are not responsible for it; pathological aspects have also played important roles. Rapid on-site evaluation minimizes endoscopic procedures, although its value at improving the diagnostic ratio is still debated...
February 2018: Pancreas
https://www.readbyqxmd.com/read/29346050/diagnosis-and-management-of-inflammatory-bowel-disease-in-a-harpy-eagle-harpia-harpyja-with-suspected-fenbendazole-toxicosis
#4
Grayson A Doss, Christoph Mans, Laura Johnson, Marie E Pinkerton, Robert J Hardie, Kurt K Sladky
CASE DESCRIPTION A 14-year-old 4.1-kg (9.02-lb) male harpy eagle (Harpia harpyja) was evaluated because of vomiting, anorexia, lethargy, and weight loss (decrease of 0.35 kg [0.77 lb]) of 4 weeks' duration. The bird had previously been treated orally with fenbendazole after the initial onset of clinical signs. CLINICAL FINDINGS An initial CBC revealed marked heteropenia and anemia, but whole-body contrast-enhanced CT images and other diagnostic test findings were unremarkable. Clinical signs persisted, and additional diagnostic testing failed to reveal the cause...
February 1, 2018: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/29346046/ultrasonographic-characteristics-of-the-reproductive-tract-and-serum-progesterone-and-estradiol-concentrations-in-captive-female-red-wolves-canis-rufus-with-and-without-reproductive-tract-disease
#5
Kadie M Anderson, Mandi W Schook, Karen L Goodrowe, William T Waddell, Karen N Wolf
OBJECTIVE To describe ultrasonographic characteristics of the reproductive tract and serum progesterone and estradiol concentrations in captive female red wolves (Canis rufus) with and without reproductive tract disease. DESIGN Prospective study. ANIMALS 13 adult female red wolves. PROCEDURES Wolves with varying parity and history of contraceptive treatment were anesthetized to facilitate ultrasonographic examination and measurement of the reproductive tract and blood collection for determination of serum progesterone and estradiol concentrations in December 2011 and June 2012...
February 1, 2018: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/29346031/2016-new-horizons-lecture-beyond-imaging-radiology-of-tomorrow
#6
Hedvig Hricak
This article is based on the New Horizons lecture delivered at the 2016 Radiological Society of North America Annual Meeting. It addresses looming changes for radiology, many of which stem from the disruptive effects of the Fourth Industrial Revolution. This is an emerging era of unprecedented rapid innovation marked by the integration of diverse disciplines and technologies, including data science, machine learning, and artificial intelligence-technologies that narrow the gap between man and machine. Technologic advances and the convergence of life sciences, physical sciences, and bioengineering are creating extraordinary opportunities in diagnostic radiology, image-guided therapy, targeted radionuclide therapy, and radiology informatics, including radiologic image analysis...
January 18, 2018: Radiology
https://www.readbyqxmd.com/read/29345979/machine-learning-enables-live-label-free-phenotypic-screening-in-three-dimensions
#7
Eoghan O'Duibhir, Jasmin Paris, Hannah Lawson, Catarina Sepulveda, Dahlia Doughty Shenton, Neil O Carragher, Kamil R Kranc
There is a large amount of information in brightfield images that was previously inaccessible by using traditional microscopy techniques. This information can now be exploited by using machine-learning approaches for both image segmentation and the classification of objects. We have combined these approaches with a label-free assay for growth and differentiation of leukemic colonies, to generate a novel platform for phenotypic drug discovery. Initially, a supervised machine-learning algorithm was used to identify in-focus colonies growing in a three-dimensional (3D) methylcellulose gel...
January 2018: Assay and Drug Development Technologies
https://www.readbyqxmd.com/read/29345690/clozapine-induced-myocarditis
#8
COMMENT
Tanuka Datta, Allen J Solomon
Approved in 1989 for the management of treatment-resistant schizophrenia, Clozapine is a last-line atypical antipsychotic drug used with increasing frequency. In addition to its well-known side effect of agranulocytosis, this drug also carries with it rare but serious adverse cardiovascular risk of myocarditis. We present a patient on Clozapine who was admitted to the cardiology service with chest pain, ST segment elevations and elevated troponin concerning for acute myocardial infarction. Evaluation with imaging revealed decreased left ventricular function, however, no coronary artery disease was present on catheterization; findings consistent with a diagnosis of myocarditis...
January 2018: Oxford Medical Case Reports
https://www.readbyqxmd.com/read/29345551/quantifying-novice-and-expert-differences-in-visual-diagnostic-reasoning-in-veterinary-pathology-using-eye-tracking-technology
#9
Amy L Warren, Tyrone L Donnon, Catherine R Wagg, Heather Priest, Nicole J Fernandez
Visual diagnostic reasoning is the cognitive process by which pathologists reach a diagnosis based on visual stimuli (cytologic, histopathologic, or gross imagery). Currently, there is little to no literature examining visual reasoning in veterinary pathology. The objective of the study was to use eye tracking to establish baseline quantitative and qualitative differences between the visual reasoning processes of novice and expert veterinary pathologists viewing cytology specimens. Novice and expert participants were each shown 10 cytology images and asked to formulate a diagnosis while wearing eye-tracking equipment (10 slides) and while concurrently verbalizing their thought processes using the think-aloud protocol (5 slides)...
January 18, 2018: Journal of Veterinary Medical Education
https://www.readbyqxmd.com/read/29345097/the-diagnostic-value-of-the-functional-lumen-imaging-probe-versus-high-resolution-anorectal-manometry-in-patients-with-fecal-incontinence
#10
A M Leroi, C Melchior, C Charpentier, V Bridoux, C Savoye-Collet, E Houivet, P Ducrotté, G Gourcerol
BACKGROUND: The functional lumen imaging probe (EndoFLIP® ) is a new technology that measures the distensibility of the anal canal represented by the anal distensibility index. The aims of this study were (i) to compare the anal distensibility index to anal pressure in a cohort of patients with fecal incontinence (FI) and (ii) to compare the diagnostic value of the EndoFLIP® to that of high-resolution anorectal manometry (HRAM) in the same cohort of patients. METHODS: Eighty-three consecutive patients with FI who underwent EndoFLIP® and HRAM assessments were enrolled...
January 18, 2018: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/29344988/recent-advances-in-articular-cartilage-evaluation-using-computed-tomography-and-magnetic-resonance-imaging
#11
REVIEW
B B Nelson, C E Kawcak, M F Barrett, C W McIlwraith, M W Grinstaff, L R Goodrich
Articular cartilage is a critical joint tissue and its evaluation remains a diagnostic challenge in horses. Coupled with a poor capacity for healing, early degenerative changes in articular cartilage are difficult to characterise using routine diagnostic imaging evaluations. Computed tomography (CT) and magnetic resonance imaging (MRI) both provide volumetric joint assessment and highlight morphologic and quantitative properties of articular cartilage, improving assessment of this essential tissue. While the use of CT and MRI for joint evaluation is not new, there still remains a shortage of literature and scientific studies on the ability of these methods to evaluate articular cartilage in the horse...
January 17, 2018: Equine Veterinary Journal
https://www.readbyqxmd.com/read/29344827/molecular-imaging-of-cardiac-remodelling-after-myocardial-infarction
#12
REVIEW
Daniel Curley, Begoña Lavin Plaza, Ajay M Shah, René M Botnar
Myocardial infarction and subsequent heart failure is a major health burden associated with significant mortality and morbidity in western societies. The ability of cardiac tissue to recover after myocardial infarction is affected by numerous complex cellular and molecular pathways. Unbalance or failure of these pathways can lead to adverse remodelling of the heart and poor prognosis. Current clinical cardiac imaging modalities assess anatomy, perfusion, function, and viability of the myocardium, yet do not offer any insight into the specific molecular pathways involved in the repair process...
January 17, 2018: Basic Research in Cardiology
https://www.readbyqxmd.com/read/29344768/diagnosis-and-treatment-of-injuries-to-the-biceps-and-superior-labral-complex-in-overhead-athletes
#13
REVIEW
Jacob G Calcei, Venkat Boddapati, David W Altchek, Christopher L Camp, Joshua S Dines
PURPOSE OF REVIEW: This review discusses the diagnostic and treatment challenges presented by injuries to the biceps and superior labral complex. RECENT FINDINGS: A focused patient history, numerous physical examination maneuvers, and appropriate advanced imaging studies must be utilized to reach an accurate diagnosis. Nonoperative management, even in overhead athletes, has demonstrated relatively good outcomes, while operative outcomes have yielded mixed results...
January 17, 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29344739/what-we-have-learned-from-the-recent-meta-analyses-on-diagnostic-methods-for-atherosclerotic-plaque-regression
#14
REVIEW
Giuseppe Biondi-Zoccai, Simona Mastrangeli, Enrico Romagnoli, Mariangela Peruzzi, Giacomo Frati, Leonardo Roever, Arturo Giordano
PURPOSE OF REVIEW: Atherosclerosis has major morbidity and mortality implications globally. While it has often been considered an irreversible degenerative process, recent evidence provides compelling proof that atherosclerosis can be reversed. Plaque regression is however difficult to appraise and quantify, with competing diagnostic methods available. Given the potential of evidence synthesis to provide clinical guidance, we aimed to review recent meta-analyses on diagnostic methods for atherosclerotic plaque regression...
January 17, 2018: Current Atherosclerosis Reports
https://www.readbyqxmd.com/read/29344721/post-mortem-mr-angiography-quantitative-investigation-and-intravascular-retention-of-perfusates-in-ex-situ-porcine-hearts
#15
Bridgette Webb, Thomas Widek, Sylvia Scheicher, Thorsten Schwark, Rudolf Stollberger
As the implementation of minimally invasive imaging techniques in both forensic and pathological practice increases, research in this area focuses on addressing recognised diagnostic weaknesses of current approaches. Assessment of sudden cardiac death (SCD) can be considered one such area in which post-mortem imaging still shows diagnostic weaknesses. We hypothesise that magnetic resonance imaging (MRI) with an angiographic adjunct may improve the visualisation and interpretation of cardiac pathologies in a post-mortem setting...
January 18, 2018: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/29344682/68ga-prostate-specific-membrane-antigen-psma-positron-emission-tomography-pet-for-primary-staging-of-high-risk-prostate-cancer-a-systematic-review
#16
Julia Corfield, Marlon Perera, Damien Bolton, Nathan Lawrentschuk
PURPOSE: To systematically review currently available data on 68Ga-prostate specific membrane antigen (PSMA) positron emission tomography (PET) used for the primary staging of high-risk prostate cancer. METHODS: We performed critical reviews of EMBASE, Web of Science (including MEDLINE) and Cochrane databases in October 2016 according to the Preferred Reporting Items for Systematic Review and Meta-analysis statement. We included studies that utilized 68Ga-PSMA PET for primary staging of prostate cancer...
January 17, 2018: World Journal of Urology
https://www.readbyqxmd.com/read/29344564/endoscopic-ultrasound-guided-needle-based-confocal-laser-endomicroscopy-in-solid-pancreatic-masses-a-prospective-validation-study
#17
John Gásdal Karstensen, Tatiana Cârţână, Codruţa Constantinescu, Silviu Dumitrașcu, Bojan Kovacevic, Pia Klausen, Hazem Hassan, Tobias Wirenfeldt Klausen, Helga Bertani, Manoop S Bhutani, Adrian Săftoiu, Peter Vilmann
Background and study aims:  Endoscopic ultrasound fine-needle aspiration (EUS-FNA) is a keystone in diagnosing and staging of pancreatic masses. Recently, a microfiber that can pass through a 19-gauge needle has been introduced for confocal laser endomicroscopy (nCLE). The aims of this study were to evaluate the diagnostic value and the reproducibility of nCLE criteria for solid malignant lesions. Patients and methods:  This prospective dual-center study included patients with pancreatic masses suspicious of malignancy referred for EUS-FNA...
January 2018: Endoscopy International Open
https://www.readbyqxmd.com/read/29344302/evans-blue-attachment-enhances-somatostatin-receptor-subtype-2-imaging-and-radiotherapy
#18
Rui Tian, Orit Jacobson, Gang Niu, Dale O Kiesewetter, Zhantong Wang, Guizhi Zhu, Ying Ma, Gang Liu, Xiaoyuan Chen
Purpose: Radionuclide therapy directed against tumors that express somatostatin receptors (SSTRs) has proven effective for the treatment of advanced, low- to intermediate-grade neuroendocrine tumors in the clinic. In clinical usage, somatostatin peptide-based analogs, labeled with therapeutic radionuclides, provide an overall response rate of about 30%, despite the high cumulative activity injected per patient. We set out to improve the effectiveness of somatostatin radiotherapy by preparing a chemical analog that would clear more slowly through the urinary tract and, concomitantly, have increased blood circulation half-life and higher targeted accumulation in the tumors...
2018: Theranostics
https://www.readbyqxmd.com/read/29344194/chronic-myeloid-leukemia-following-repeated-diagnostic-x-ray-exposure-for-the-treatment-of-recurrent-spontaneous-pneumothorax-in-a-patient-with-ankylosing-spondylitis-a-case-report-and-literature-review
#19
Fang-He Ju, Xu-Bo Gong, Ting-Zhen Xu, Li-Bin Jiang, Hui-Hua Hong, Zhen Wang
Previous studies have indicated that X-ray irradiation may increase the risk of chronic myeloid leukemia (CML), and the incidence of spontaneous pneumothorax in patients with ankylosing spondylitis (AS) is higher than in the general population. Patients with AS usually develop spontaneous pneumothorax several years after the diagnosis of AS. The present study reports the unusual case and complicated clinical history of a 29-year-old man with recurrent pneumothorax and AS, who developed CML following repeated exposure to low doses of radiation via diagnostic X-rays and chest computed tomography imaging...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29344138/clinical-and-genetic-analysis-of-tuberous-sclerosis-complex-associated-renal-angiomyolipoma-in-chinese-pedigrees
#20
Shuqiang Li, Yushi Zhang, Jinxing Wei, Xuepei Zhang
Tuberous sclerosis complex-associated renal angiomyolipoma (TSC-RAML) confers a high risk of bleeding and even mortality. However, data on TSC-RAML in Chinese pedigrees is extremely lacking. The present study aimed to investigate its clinical and genetic characteristics by obtaining a detailed medical history from 6 probands and their family members, and reassessing blood tests, computed tomography and renal dynamic imaging examinations that were conducted in the TSC-RAML patients. The TSC1/TSC2 mutation was detected in 2 families...
December 2017: Oncology Letters
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