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https://www.readbyqxmd.com/read/28327144/computational-medical-imaging-and-hemodynamics-framework-for-functional-analysis-and-assessment-of-cardiovascular-structures
#1
REVIEW
Kelvin K L Wong, Defeng Wang, Jacky K L Ko, Jagannath Mazumdar, Thu-Thao Le, Dhanjoo Ghista
Cardiac dysfunction constitutes common cardiovascular health issues in the society, and has been an investigation topic of strong focus by researchers in the medical imaging community. Diagnostic modalities based on echocardiography, magnetic resonance imaging, chest radiography and computed tomography are common techniques that provide cardiovascular structural information to diagnose heart defects. However, functional information of cardiovascular flow, which can in fact be used to support the diagnosis of many cardiovascular diseases with a myriad of hemodynamics performance indicators, remains unexplored to its full potential...
March 21, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28298819/diagnostic-accuracy-of-cone-beam-computed-tomography-in-identification-and-postoperative-evaluation-of-furcation-defects
#2
Natasha Pajnigara, Abhay Kolte, Rajashri Kolte, Nilufer Pajnigara, Vrushali Lathiya
BACKGROUND: Decision-making in periodontal therapeutics is critical and is influenced by accurate diagnosis of osseous defects, especially furcation involvement. Commonly used diagnostic methods such as clinical probing and conventional radiography have their own limitations. Hence, this study was planned to evaluate the dimensions of furcation defects clinically (pre- and post-surgery), intra-surgically, and by cone beam computed tomography (CBCT) (pre- and post-surgery). MATERIALS AND METHODS: The study comprised a total of 200 Grade II furcation defects in forty patients, with a mean age of 38...
July 2016: Journal of Indian Society of Periodontology
https://www.readbyqxmd.com/read/28285014/vertebral-fracture-assessment-enhancing-the-diagnosis-prevention-and-treatment-of-osteoporosis
#3
Meltem Zeytinoglu, Rajesh K Jain, Tamara J Vokes
Osteoporosis is a highly prevalent condition, resulting in significant morbidity and mortality. Nevertheless, it is frequently untreated. Vertebral fractures often do not come to clinical attention, yet, their presence is diagnostic of osteoporosis, helps to predict the risk of future fractures, and may alter the choice of pharmacotherapy. The addition of lateral spine imaging technology to the densitometer, for vertebral fracture assessment (VFA), represented a major advancement in the ability to diagnose vertebral fractures and osteoporosis...
March 8, 2017: Bone
https://www.readbyqxmd.com/read/28281784/image-quality-of-cone-beam-computed-tomography-for-evaluation-of-extremity-fractures-in-the-presence-of-metal-hardware-visual-grading-characteristics-analysis
#4
Greg M Osgood, Gaurav K Thawait, Nima Hafezi-Nejad, Delaram Shakoor, Adam Shaner, John Yorkston, Wojciech B Zbijewski, Jeffrey H Siewerdsen, Shadpour Demehri
OBJECTIVES: To evaluate image quality and inter-observer reliability of novel Cone Beam CT (CBCT) scanner in comparison with plain radiography for assessment of fracture healing in presence of metal hardware. METHODS: In this prospective IRB approved HIPAA complaint study, written informed consent was obtained from 27 patients (10 females; 17 males, mean age 44 years, age range 21- 83 years) with either upper or lower extremity fracture, and with metal hardware, who underwent CBCT scans and had a clinical radiograph of the affected part...
March 10, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28259272/current-evidence-regarding-diagnostic-imaging-methods-for-pediatric-lumbar-spondylolysis-a-report-from-the-scoliosis-research-society-evidence-based-medicine-committee
#5
Charles G T Ledonio, Douglas C Burton, Charles H Crawford, Robert Shay Bess, Jacob M Buchowski, Serena S Hu, Baron S H Lonner, David W Polly, Justin S Smith, James O Sanders
BACKGROUND: Spondylolysis is common among the pediatric population, yet no formal systematic literature review regarding diagnostic imaging has been performed. The Scoliosis Research Society (SRS) requested an assessment of the current state of peer reviewed evidence regarding pediatric spondylolysis. METHODS: Literature was searched professionally and citations retrieved. Abstracts were reviewed and analyzed by the SRS Evidence-Based Medicine Committee. Level I studies were considered to provide Good Evidence for the clinical question...
March 2017: Spine Deformity
https://www.readbyqxmd.com/read/28256491/radiographic-findings-of-bisphosphonate-related-osteonecrosis-of-the-jaws-comparison-with-cone-beam-computed-tomography-and-panoramic-radiography
#6
A Demir, F N Pekiner
OBJECTIVE: The aim of this study is to assess radiographic findings of bisphosphonate-related osteonecrosis of the jaws (BRONJ) and to evaluate the efficiency of cone-beam computed tomography (CBCT) and panoramic radiography (PR) by comparing with each other. MATERIALS AND METHODS: The data of 46 patients treated with bisphosphonates for at least 1 to 10 years were retrospectively examined. 27 patients were selected for study group. The first inclusion criteria was an available CBCT or PR...
March 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/28250545/advances-in-the-development-of-a-dissolution-method-for-the-attribution-of-iridium-source-materials
#7
A P J Hodgson, K E Jarvis, R W Grimes, O J Marsden
To assist in nuclear forensic investigations, new techniques are required to evaluate radioactive materials that may be discovered outside of regulatory control. Using a recently developed pressure digestion method for iridium powder, assessments have been made of this techniques suitability for undertaking iridium target material evaluations. In addition to determining the reaction conditions necessary for total dissolution, these investigations have provided an insight into the elemental impurities that are present within unirradiated iridium targets that are used in QSA Global radiography sources, and established the speciation of the iridium solutions that are formed during this process...
2017: Journal of Radioanalytical and Nuclear Chemistry
https://www.readbyqxmd.com/read/28247999/tibial-tuberosity-advancement-in-small-breed-dogs-using-tta-rapid-implants-complications-and-outcome
#8
B Dyall, H Schmökel
OBJECTIVE: To assess the perioperative complications and the outcome when treating small-breed dogs with cranial cruciate ligament insufficiency with tibial tuberosity advancement using the TTA Rapid implant. MATERIALS AND METHODS: 40 dogs (48 stifles) with cranial cruciate ligament insufficiency and body weight of 15 kg or less. Diagnosis was confirmed by arthroscopy or arthrotomy, followed by tibial tuberosity advancement surgery. Six weeks after surgery, the dogs were re-evaluated with clinical examination and radiography...
March 1, 2017: Journal of Small Animal Practice
https://www.readbyqxmd.com/read/28230623/safety-and-accuracy-of-freehand-versus-navigated-iliac-screws-results-from-222-screw-placements
#9
Randall J Hlubek, Kaith K Almefty, David S Xu, Jay D Turner, U Kumar Kakarla
STUDY DESIGN: Retrospective review. OBJECTIVE: To compare the safety and accuracy of the freehand technique versus stereotactic navigation for placement of iliac screws. SUMMARY OF BACKGROUND DATA: Iliac screw fixation is often used to augment lumbosacral reconstruction in advanced spine disease to increase the likelihood of successful arthrodesis. Iliac screws can be placed with image guidance, using either intraoperative fluoroscopy or computed tomography (CT) to guide navigation...
February 22, 2017: Spine
https://www.readbyqxmd.com/read/28208989/central-telangiectatic-osteosarcoma-of-the-mandible-in-a-paediatric-patient-a-rarity
#10
Divya Tomar, Manu Dhillon, Muhamad Nishad Thayath, Iram Zaidi, Shikha Singh
Osteosarcoma (OS) involving the head and neck region is rare and is a diagnostic challenge due to its aggressive nature and varied presentations. Although OS constitute 40% to 60% of all bone tumours, only 10% of these occur in the head and neck region, most commonly in the maxilla and mandible. OS of the jaw bone has a different pattern and behaviour when compared to OS at other anatomic location. It occurs in a more elderly population, less aggressive and usually spreads locally rather than distant metastases...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28168714/application-of-the-stephan-et-al-chest-radiograph-comparison-method-to-decomposed-human-remains
#11
Mariyam I Isa, Joseph T Hefner, Michael A Markey
This manuscript describes the use of comparative radiography of the chest to facilitate positive identification of human remains in advanced stages of decomposition. The method reported by Stephan et al. for positive identification of dry, disarticulated skeletal elements was used on semifleshed, decomposing remains. Positive identification was established through multiple points of concordance observed in radiographs of the left and right clavicles and the C5-T1 vertebrae. This case study demonstrates the applicability of the Stephan et al...
February 7, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28166937/diagnostics-and-ancillary-tests-of-neurologic-dysfunction-in-the-ruminant
#12
REVIEW
Dusty W Nagy
A variety of diagnostic tests can be used to help further characterize and diagnose neurologic disease in ruminant species. Cerebrospinal fluid is easily collected, and analysis can help in defining the broad category of disease. Diagnostic imaging, including radiography, myelography, ultrasonography, computed tomography, and MRI, have all been used to varying degrees in ruminants. Advanced cross-sectional imaging techniques have the capacity to aid greatly in diagnosis, but their cost can often be prohibitive...
March 2017: Veterinary Clinics of North America. Food Animal Practice
https://www.readbyqxmd.com/read/28158042/high-speed-two-dimensional-synchrotron-white-beam-x-ray-radiography-of-spray-breakup-and-atomization
#13
Benjamin R Halls, Christopher D Radke, Benjamin J Reuter, Alan L Kastengren, James R Gord, Terrence R Meyer
High-speed, two-dimensional synchrotron x-ray radiography and phase-contrast imaging are demonstrated in propulsion sprays. Measurements are performed at the 7-BM beamline at the Advanced Photon Source user facility at Argonne National Laboratory using a recently developed broadband x-ray white beam. This novel enhancement allows for high speed, high fidelity x-ray imaging for the community at large. Quantitative path-integrated liquid distributions and spatio-temporal dynamics of the sprays were imaged with a LuAG:Ce scintillator optically coupled to a high-speed CMOS camera...
January 23, 2017: Optics Express
https://www.readbyqxmd.com/read/28154899/baseline-increased-18f-fluoride-uptake-lesions-at-vertebral-corners-on-positron-emission-tomography-predict-new-syndesmophyte-development-in-ankylosing-spondylitis-a-2-year-longitudinal-study
#14
Eun-Kyoung Park, Kyoungjune Pak, Ji-Heh Park, Keunyoung Kim, Seong-Jang Kim, In-Joo Kim, Geun-Tae Kim, Seung-Geun Lee
The goal of this study was to demonstrate whether increased 18F-fluoride uptake lesions on positron emission tomography (PET) scan can predict new syndesmophyte development in patients with ankylosing spondylitis (AS). In 12 AS patients, 18F-fluoride PET and magnetic resonance imaging (MRI) was performed at baseline, and radiography was performed at baseline and the 2-year follow-up. The following data were recorded: the presence of increased 18F-fluoride uptake lesions on PET defined as an uptake greater than the uptake in the adjacent normal vertebral body; acute (type A) and advanced (type B) corner inflammatory lesions (CILs) and fat lesions on MRI; and syndesmophytes on radiography...
February 2, 2017: Rheumatology International
https://www.readbyqxmd.com/read/28133221/-a-case-of-interstitial-pneumonitis-induced-by-lapatinib-plus-letrozole
#15
Daigo Yamamoto, Chizuko Yamamoto, Mitsuo Yamamoto
Lapatinib is an orally bioavailable dual inhibitor of the intracellular domain of both the HER2 protein and the epidermal growth factor receptor. This dual inhibitor can effectively prevent the downstream signal transduction initiated by a tyrosine kinase, thereby reducing the proliferation rate of tumor cells. Lapatinib was demonstrated to be beneficial in patients with HER2-positive locally advanced and metastatic breast cancer. We present here a case of interstitial pneumonitis that occurred after lapatinib treatment...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28130567/malignant-pericardial-mesothelioma-a%C3%A2-systematic-review-of-current-practice
#16
S Cao, S Jin, J Cao, J Shen, H Zhang, Q Meng, B Pan, Y Yu
BACKGROUND: Malignant mesothelioma is a rare but aggressive tumor, with a high misdiagnosis rate and overall bleak prognosis. In 0.7% of all cases, the origin is the pericardium. METHODS: The present study is a review of the literature published in recent decades focusing on the advances in clinical manifestations, radiological findings, diagnosis, differential diagnosis, and treatment of malignant pericardial mesothelioma (MPM). RESULTS: No clear relationship has been established between the etiologies and the development of MPM...
January 27, 2017: Herz
https://www.readbyqxmd.com/read/28101664/history-and-evolution-of-the-barium-swallow-for-evaluation-of-the-pharynx-and-esophagus
#17
REVIEW
Marc S Levine, Stephen E Rubesin
This article reviews the history of the barium swallow from its early role in radiology to its current status as an important diagnostic test in modern radiology practice. Though a variety of diagnostic procedures can be performed to evaluate patients with dysphagia or other pharyngeal or esophageal symptoms, the barium study has evolved into a readily available, non-invasive, and cost-effective technique that can facilitate the selection of additional diagnostic tests and guide decisions about medical, endoscopic, or surgical management...
February 2017: Dysphagia
https://www.readbyqxmd.com/read/28099606/bacillary-angiomatosis-with-bone-invasion
#18
Lucia Martins Diniz, Karina Bittencourt Medeiros, Luana Gomes Landeiro, Elton Almeida Lucas
Bacillary angiomatosis is an infection determined by Bartonella henselae and B. quintana, rare and prevalent in patients with acquired immunodeficiency syndrome. We describe a case of a patient with AIDS and TCD4+ cells equal to 9/mm3, showing reddish-violet papular and nodular lesions, disseminated over the skin, most on the back of the right hand and third finger, with osteolysis of the distal phalanx observed by radiography. The findings of vascular proliferation with presence of bacilli, on the histopathological examination of the skin and bone lesions, led to the diagnosis of bacillary angiomatosis...
November 2016: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28066731/imaging-of-the-hip-a-systematic-approach-to-the-young-adult-hip
#19
Sara Muñoz Chiamil, Claudia Astudillo Abarca
BACKGROUND: Great advances in knowledge and understanding of the biomechanics of the hip, both in arthroscopic procedures and imaging techniques, have expanded and improved the diagnosis of pathologies of the young adult hip. The anatomy of the hip joint is complex due to its morphology and orientation. The inter-pretation of the images requires deep knowledge of the osseous and soft tissue anatomy: muscles, tendons, ligaments, vessels and nerves. There are multiple imaging tools. Diagnostic techniques have different utilities and often are complementary...
July 2016: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28048675/tu-fg-209-07-medical-physics-1-0-versus-medical-physics-2-0-a-case-study
#20
D Carver, C Willis, P Stauduhar, T Nishino, J Wells, E Samei
PURPOSE: To illustrate how performance analytics can identify performance decrement in digital radiography systems. METHODS: Subsequent to a radiologist's image quality complaint, four different advanced methods contributed to root cause analysis. Our system was a GE Revolution XQi digital radiography unit. Initially, we reviewed weekly GE Quality Assurance Procedures (QAP) results in a database dating from 2001. Next, we evaluated objective image quality metrics of individual PA Chest radiographs acquired...
June 2016: Medical Physics
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