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https://www.readbyqxmd.com/read/27915451/interobserver-agreement-in-detection-of-white-globe-appearance-and-the-ability-of-educational-lectures-to-improve-the-diagnosis-of-gastric-lesions
#1
Hitoshi Omura, Naohiro Yoshida, Tomoyuki Hayashi, Kazuhiro Miwa, Hajime Takatori, Hirokazu Tsuji, Katsuhisa Inamura, Yukihiro Shirota, Hiroyuki Aoyagi, Takaharu Masunaga, Kazuyoshi Katayanagi, Hiroshi Kurumaya, Shuichi Kaneko, Hisashi Doyama
BACKGROUND: White globe appearance (WGA) refers to a small white lesion of globular shape underneath cancerous gastric epithelium that can be clearly visualized by magnifying endoscopy with narrowband imaging (M-NBI). WGA has been reported to be a novel endoscopic marker that is highly specific in differentiating early gastric cancer (GC) from low-grade adenoma, and has a significantly higher prevalence in early GCs than in noncancerous lesions. However, interobserver agreement in detecting WGA and whether training intervention can improve diagnostic accuracy are unknown...
December 3, 2016: Gastric Cancer
https://www.readbyqxmd.com/read/27915446/superior-dislocation-of-the-patella-a-pathognomonic-finding-and-review-of-literature
#2
P W van Egmond, M C Vermeulen, C F van Dijke, H C A Graat
A 59-year-old woman with a painful right knee that became locked in extension after a trivial trauma was seen at the emergency room. This was caused by unloaded hyperextension in bed. She was diagnosed with a superior dislocation of the patella. A closed reduction was performed, but a recurrent episode was seen within a week. An arthroscopy was performed, in which the causative osteophytes were removed. In the 12-month follow-up after treatment, no recurrence was seen. A superior dislocation of the patella is caused by patellofemoral osteophytes that interlock...
December 3, 2016: Skeletal Radiology
https://www.readbyqxmd.com/read/27915121/predicting-individual-brain-functional-connectivity-using-a-bayesian-hierarchical-model
#3
Tian Dai, Ying Guo
Network-oriented analysis of functional magnetic resonance imaging (fMRI), especially resting-state fMRI, has revealed important association between abnormal connectivity and brain disorders such as schizophrenia, major depression and Alzheimer's disease. Imaging-based brain connectivity measures have become a useful tool for investigating the pathophysiology, progression and treatment response of psychiatric disorders and neurodegenerative diseases. Recent studies have started to explore the possibility of using functional neuroimaging to help predict disease progression and guide treatment selection for individual patients...
November 30, 2016: NeuroImage
https://www.readbyqxmd.com/read/27915063/preoperative-prediction-of-the-location-and-shape-of-the-facial-nerve-in-patients-with-large-vestibular-schwannomas-using-diffusion-tensor-imaging-based-fiber-tracking
#4
Yanyang Zhang, Zhiqi Mao, Penghu Wei, Yazhou Jin, Lin Ma, Jun Zhang, Xinguang Yu
OBJECTIVE: Preserving the facial nerve (FN) during surgery for large vestibular schwannomas (VSs) is challenging because of the unpredictable locations and morphological changes in the FN. Diffusion tensor imaging-based fiber tracking (DTI-FT) has been proposed to preoperatively visualize the FN. This study was performed to evaluate the efficacy of DTI-FT for predicting FN location and shape in patients with large VSs. METHODS: In this prospective study, imaging data from 30 consecutive patients with large VSs were obtained using 3-T magnetic resonance imaging...
November 30, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27914917/the-role-of-dual-phase-cone-beam-ct-in-predicting-short-term-response-after-transarterial-chemoembolization-for-hepatocellular-carcinoma
#5
Kerstin Müller, Sanjit Datta, Sonja Gehrisch, Moiz Ahmad, Mohammed Ahmed Abdelrazek Mohammed, Jarrett Rosenberg, Gloria L Hwang, John D Louie, Daniel Y Sze, Nishita Kothary
PURPOSE: To identify computational and qualitative features derived from dual-phase cone-beam CT that predict short-term response in patients undergoing transarterial chemoembolization for hepatocellular carcinoma (HCC). MATERIALS AND METHODS: This retrospective study included 43 patients with 59 HCCs. Six features were extracted, including intensity of tumor enhancement on both phases and characteristics of the corona on the washout phase. Short-term response was evaluated by modified Response Evaluation Criteria in Solid Tumors on follow-up imaging, and extracted features were correlated to response using univariate and multivariate analyses...
November 30, 2016: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/27914838/lacrimal-gland-involvement-in-blepharophimosis-ptosis-epicanthus-inversus-syndrome
#6
Ana Filipa Duarte, Patricia M S Akaishi, Greice A de Molfetta, Salomão Chodraui-Filho, Murilo Cintra, Alcina Toscano, Wilson Araujo Silva, Antonio A V Cruz
PURPOSE: To describe the involvement of the lacrimal gland (LG) in blepharophimosis-ptosis-epicanthus inversus syndrome (BPES). DESIGN: Observational, cross-sectional study. PARTICIPANTS: Twenty-one patients with BPES (10 female, 11 male) aged on average 15 years (range, 2-39 years), from 3 Brazilian medical centers and 1 Portuguese medical center. METHODS: Patients had their ocular surface evaluated with slit-lamp biomicroscopy, and tear production quantified with the Schirmer test I...
November 30, 2016: Ophthalmology
https://www.readbyqxmd.com/read/27914831/optic-nerve-head-drusen-prevalence-and-associated-factors-in-clinically-normal-subjects-measured-using-optical-coherence-tomography
#7
Mark P Ghassibi, Jason L Chien, Ramiz K Abumasmah, Jeffrey M Liebmann, Robert Ritch, Sung Chul Park
OBJECTIVE: To investigate the prevalence of optic nerve head drusen (ONHD) in clinically normal subjects using enhanced depth imaging (EDI) optical coherence tomography (OCT) and to evaluate associated factors. DESIGN: Prospective, cross-sectional, observational study. PARTICIPANTS: Total of 130 clinically normal subjects. METHODS: Serial horizontal and vertical EDI OCT B-scans (interval between scans, ∼30 μm) of the optic nerve head (ONH) were obtained in both eyes of clinically normal subjects...
November 30, 2016: Ophthalmology
https://www.readbyqxmd.com/read/27914723/evaluation-of-knee-cartilage-thickness-a-comparison-between-ultrasound-and-magnetic-resonance-imaging-methods
#8
Randy J Schmitz, Hsin-Min Wang, Daniel R Polprasert, Robert A Kraft, Brian G Pietrosimone
BACKGROUND: Establishing clinically accessible measures of cartilage health is critical for assessing effectiveness of protocols to reduce risk of osteoarthritis (OA) development and progression. Cartilage thickness is one important measure in describing both OA development and progression. The objective was to determine the relationship between ultrasound and MRI measures of cartilage thickness in the medial femoral condyle. METHODS: Mean cartilage thicknesses of the left medial femoral cartilage were measured via T1 weighted MRI and ultrasound imaging from transverse, anterior, middle, and posterior medial femoral regions in 10 healthy females (Mean±Std Dev) (1...
November 30, 2016: Knee
https://www.readbyqxmd.com/read/27914496/computed-tomography-derived-skeletal-muscle-index-a-novel-predictor-of-frailty-and-hospital-length-of-stay-after-transcatheter-aortic-valve-replacement
#9
Vishal Dahya, Jingjie Xiao, Carla M Prado, Penny Burroughs, Dan McGee, Aline C Silva, Julian E Hurt, Shafi G Mohamed, Thomas Noel, Wayne Batchelor
: To determine the prevalence of low skeletal muscle mass in patients undergoing transcatheter aortic valve replacement (TAVR) and whether skeletal muscle mass measured from preoperative computed tomography (CT) images provides value in predicting postoperative length of stay (LOS). BACKGROUND: There are limited data on the use of body composition as a frailty measure in TAVR patients and no studies have determined if this measure predicts LOS. METHODS: We studied 104 consecutive patients who underwent TAVR at Tallahassee Memorial Hospital from 2012 to 2016...
December 2016: American Heart Journal
https://www.readbyqxmd.com/read/27914382/multichannel-processing-for-dispersion-curves-extraction-of-ultrasonic-axial-transmission-signals-comparisons-and-case-studies
#10
Kailiang Xu, Dean Ta, Didier Cassereau, Bo Hu, Weiqi Wang, Pascal Laugier, Jean-Gabriel Minonzio
Some pioneering studies have shown the clinical feasibility of long bones evaluation using ultrasonic guided waves. Such a strategy is typically designed to determine the dispersion information of the guided modes to infer the elastic and structural characteristics of cortical bone. However, there are still some challenges to extract multimode dispersion curves due to many practical limitations, e.g., high spectral density of modes, limited spectral resolution and poor signal-to-noise ratio. Recently, two representative signal processing methods have been proposed to improve the dispersion curves extraction...
September 2016: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/27914376/mode-converted-ultrasonic-scattering-in-polycrystals-with-elongated-grains
#11
Andrea P Arguelles, Christopher M Kube, Ping Hu, Joseph A Turner
Elastic wave scattering is used to study polycrystalline media for a wide range of applications. Received signals, which include scattering from the randomly oriented grains comprising the polycrystal, contain information from which useful microstructural parameters may often be inferred. Recently, a mode-converted diffuse ultrasonic scattering model was developed for evaluating the scattered response of a transverse wave from an incident longitudinal wave in a polycrystalline medium containing equiaxed single-phase grains with cubic elastic symmetry...
September 2016: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/27914206/is-ultrasound-a-valid-and-reliable-imaging-modality-for-airway-evaluation-an-observational-computed-tomographic-validation-study-using-submandibular-scanning-of-the-mouth-and-oropharynx
#12
Faraj W Abdallah, Eugene Yu, Phantila Cholvisudhi, Ahtsham U Niazi, Ki J Chin, Sherif Abbas, Vincent W Chan
OBJECTIVES: Ultrasound (US) imaging of the airway may be useful in predicting difficulty of airway management (DAM); but its use is limited by lack of proof of its validity and reliability. We sought to validate US imaging of the airway by comparison to CT-scan, and to assess its inter- and intra-observer reliability. We used submandibular sonographic imaging of the mouth and oropharynx to examine how well the ratio of tongue thickness to oral cavity height correlates with the ratio of tongue volume to oral cavity volume, an established tomographic measure of DAM...
December 3, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27914177/virtual-touch-tissue-imaging-and-quantification-in-the-evaluation-of-thyroid-nodules
#13
Hang Zhou, Xian-Li Zhou, Hui-Xiong Xu, Dan-Dan Li, Bo-Ji Liu, Yi-Feng Zhang, Jun-Mei Xu, Xiao-Wan Bo, Xiao-Long Li, Le-Hang Guo, Shen Qu
OBJECTIVES: To investigate the diagnostic performance of a 2-dimensional shear wave elastographic technique (Virtual Touch tissue imaging and quantification [VTIQ]; Siemens Medical Solutions, Mountain View, CA) for predicting thyroid malignancy. METHODS: A total of 302 thyroid nodules underwent conventional sonography and VTIQ before fine-needle aspiration examination or surgery. Compared with histopathologic or cytologic results in combination with follow-up, the diagnostic performance of various shear wave speed (SWS) indices (minimum [SWSmin ], maximum [SWSmax ], and mean [SWSmean ]) on VTIQ as well as conventional sonographic features for predicting thyroid malignancy was evaluated in all of the nodules...
December 3, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27914172/cryotherapy-of-renal-lesions-enhancement-on-contrast-enhanced-sonography-on-postoperative-day-1-does-not-imply-viable-tissue-persistence
#14
Michele Bertolotto, Salvatore Siracusano, Calogero Cicero, Mariano Iannelli, Tommaso Silvestri, Antonio Celia, Alessandro Guarise, Fulvio Stacul
OBJECTIVES: To investigate whether persistent enhancement detected on contrast-enhanced sonography at postoperative day 1 (early contrast-enhanced sonography) after cryoablation of renal tumors implies the presence of residual viable tumor tissue, defined as residual enhancing tissue on reference imaging (computed tomography or magnetic resonance imaging) performed 6 months after the procedure. METHODS: Seventy-four patients with percutaneous cryoablation of renal tumors had early contrast-enhanced sonography from November 2011 to August 2015...
December 3, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27914152/pediatric-multiple-sclerosis-in-portugal-a-multicentre-study
#15
Ana Sofia Correia, Luís Augusto, Joana Meireles, Joana Pinto, Ana Paula Sousa
INTRODUCTION: Multiple sclerosis is most often diagnosed among young adults but less frequently it may present during childhood or adolescence. In Portugal, there has been only one previous single-center, pediatric multiple sclerosis study. The main objective was the evaluation of the demographic, clinical, laboratorial and neuroradiological characteristics of patients with pediatric-onset multiple sclerosis in Portugal. The secondary objectives were to compare the characteristics of childhood-onset multiple sclerosis and adolescent-onset multiple sclerosis and to characterize the treatments prescribed...
August 2016: Acta Médica Portuguesa
https://www.readbyqxmd.com/read/27914043/a-revisit-to-quantitative-pet-with-18-f-fdopa-of-high-specific-activity-using-a-high-resolution-condition-in-view-of-application-to-regenerative-therapy
#16
Go Akamatsu, Akihito Ohnishi, Kazuki Aita, Hiroyuki Nishida, Yasuhiko Ikari, Masahiro Sasaki, Nobuo Kohara, Michio Senda
OBJECTIVE: With the advent of regenerative/cell therapy for Parkinson's disease (PD), (18)F-FDOPA has drawn new attention as a biomarker of the therapeutic that cannot be evaluated with radiopharmaceuticals for dopamine transporter. Since most previous (18)F-FDOPA PET studies were carried out many years ago with a PET scanner of lower resolution and with (18)F-FDOPA of low specific activity synthesized from (18)F-F2, we used a newer PET/CT scanner with a high-resolution condition and (18)F-FDOPA synthesized from (18)F-F(-) to re-evaluate this technique on normal subjects and patients with PD, together with D2 receptor imaging with (11)C-raclopride (RAC)...
December 2, 2016: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/27913947/preclinical-evaluation-of-cathepsin-based-fluorescent-imaging-system-for-cytoreductive-surgery
#17
Carlos H F Chan, Lukas F Liesenfeld, Isabel Ferreiro-Neira, James C Cusack
BACKGROUND: Cytoreductive surgery and hyperthermic intraperitoneal chemotherapy (CRS-HIPEC) is a treatment option for peritoneal surface malignancies. The ability to detect microscopic foci of peritoneal metastasis intraoperatively may ensure the completeness of cytoreduction. In this study, we evaluated the suitability of a hand-held cathepsin-based fluorescent imaging system for intraoperative detection of appendiceal and colorectal peritoneal metastasis. METHODS: Peritoneal tumors and normal peritoneal tissues were collected from patients with appendiceal and colorectal peritoneal metastasis...
December 2, 2016: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/27913913/improved-image-quality-in-abdominal-ct-in-patients-who-underwent-treatment-for-hepatocellular-carcinoma-with-small-metal-implants-using-a-raw-data-based-metal-artifact-reduction-algorithm
#18
Keitaro Sofue, Takeshi Yoshikawa, Yoshiharu Ohno, Noriyuki Negi, Hiroyasu Inokawa, Naoki Sugihara, Kazuro Sugimura
OBJECTIVES: To determine the value of a raw data-based metal artifact reduction (SEMAR) algorithm for image quality improvement in abdominal CT for patients with small metal implants. METHODS: Fifty-eight patients with small metal implants (3-15 mm in size) who underwent treatment for hepatocellular carcinoma were imaged with CT. CT data were reconstructed by filtered back projection with and without SEMAR algorithm in axial and coronal planes. To evaluate metal artefact reduction, mean CT number (HU and SD) and artefact index (AI) values within the liver were calculated...
December 2, 2016: European Radiology
https://www.readbyqxmd.com/read/27913818/-amyloid-positron-emission-tomography-with-18-%C3%A2-f-florbetaben-in-the-diagnostic-workup-of-dementia-patients
#19
S Schönecker, C Prix, T Raiser, N Ackl, E Wlasich, G Stenglein-Krapf, E Mille, M Brendel, O Sabri, M Patt, H Barthel, P Bartenstein, J Levin, A Rominger, A Danek
BACKGROUND: To this day the definite diagnosis of Alzheimer's disease still relies on post-mortem histopathological detection of neurofibrillary tangles and beta-amyloid deposits. Amyloid positron emission tomography (PET) is a new diagnostic tool that enables the in vivo quantification of pathological beta-amyloid deposits. The aim of the current study was to evaluate to what extent (18)F-florbetaben-PET (FBB-PET) influences the diagnosis of patients with dementia. MATERIAL AND METHODS: Imaging with FBB-PET was performed on 33 patients from our outpatient department for cognitive neurology...
December 2, 2016: Der Nervenarzt
https://www.readbyqxmd.com/read/27913783/three-dimensional-printed-prosthesis-demonstrates-functional-improvement-in-a-patient-with-an-amputated-thumb-a-technical-note
#20
Keun Ho Lee, Sung Jae Kim, Yong Ho Cha, Jae Lim Kim, Dong Kyu Kim, Sang Jun Kim
BACKGROUND AND AIM: Three-dimensional printer is widely used in industry, biology, and medical fields. We report a finger prosthesis produced by a three-dimensional scanner and printer for a 67-year-old man with a right thumb amputation above the metacarpophalangeal joint. TECHNIQUE: His right amputated and left intact hands were scanned with a three-dimensional scanner, and the left-hand image was rotated to the right side to design the right thumb prosthesis. The designed prosthesis was printed with a three-dimensional printer using the fused filament fabrication output system...
December 1, 2016: Prosthetics and Orthotics International
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