keyword
MENU ▼
Read by QxMD icon Read
search

Tomography

keyword
https://www.readbyqxmd.com/read/28110443/aerobic-endurance-training-does-not-protect-bone-against-poorly-controlled-type-1-diabetes-in-young-adult-rats
#1
Tom J Hazell, T Dylan Olver, Hana Kowalchuk, Matthew W McDonald, Adwitia Dey, Kenneth N Grisé, Earl G Noble, C W James Melling, Paula Lavery, Hope A Weiler
Streptozotocin (STZ)-induced type 1 diabetes mellitus (T1DM) decreases trabecular bone volume and bone strength in rodents. The current study investigated the potential protective effects of aerobic endurance training (AET) on bone in STZ-induced T1DM young adult rats. Sixty-four 8-week-old male Sprague-Dawley rats were randomly divided into 4 groups of 16: control non-T1DM sedentary (CS) and exercised (CX), T1DM sedentary (DS) and exercised (DX). Blood glucose was maintained at 9-15 mmol/L using subcutaneously implanted insulin pellets (Linplant, Linshin Canada, Inc...
January 21, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/28110398/simultaneous-robotic-subtotal-gastrectomy-and-right-hemicolectomy-for-synchronous-adenocarcinoma-of-stomach-and-colon
#2
Byoung Jo Suh, Sung Jin Oh, Jin Yong Shin, Do Hoon Ku, Dong Sik Bae, Jong Kwon Park
Simultaneous laparoscopy-assisted resection for synchronous stomach and colon cancers has been reported frequently; however, robot-assisted gastrectomy and colectomy for these conditions are rarely reported. We report the successful use of robotic surgery for synchronous cancers of the stomach and colon. A 71-year-old woman with no specific medical history was diagnosed with early gastric cancer at the gastric angle and right colon cancer after undergoing esophagogastroduodenoscopy and colonofiberoscopy. Abdomino-pelvic computed tomography revealed that the stomach and colon lesions were limited to the mucosa without any lymph nodes or distant metastasis, which suggested the clinical stage for both cancers as T1N0M0...
January 21, 2017: Journal of Robotic Surgery
https://www.readbyqxmd.com/read/28110329/lung-nodule-with-increasing-fluorodeoxyglucose-uptake-in-a-patient-with-a-history-of-lung-carcinoma-and-talc-pleurodesis-evaluated-by-ebus-tbna-on-site-assessment
#3
Elizabeth M Kurian
BACKGROUND: Fluorodeoxyglucose (FDG) uptake on positron emission tomography (PET) scan is an indicator of potential malignancy or infection. Patients with a history of talc pleurodesis can develop pleural or lung parenchymal nodules/talcomas. In these patients, talc-associated (non-malignancy-related) FDG uptake may occur over years. CASE REPORT: A 66-year-old female presented with a past medical history significant for resected non-small-cell lung cancer and was treated with chemotherapy/radiation...
January 21, 2017: Acta Cytologica
https://www.readbyqxmd.com/read/28110313/framework-for-2d-3d-image-fusion-of-infrared-thermography-with-preoperative-mri
#4
Nico Hoffmann, Florian Weidner, Peter Urban, Tobias Meyer, Christian Schnabel, Yordan Radev, Gabriele Schackert, Uwe Petersohn, Edmund Koch, Stefan Gumhold, Gerald Steiner, Matthias Kirsch
Multimodal medical image fusion combines information of one or more images in order to improve the diagnostic value. While previous applications mainly focus on merging images from computed tomography, magnetic resonance imaging (MRI), ultrasonic and single-photon emission computed tomography, we propose a novel approach for the registration and fusion of preoperative 3D MRI with intraoperative 2D infrared thermography. Image-guided neurosurgeries are based on neuronavigation systems, which further allow us track the position and orientation of arbitrary cameras...
January 23, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28110242/three-dimensional-analysis-of-tarsal-bone-response-to-axial-loading-in-patients-with-hallux-valgus-and-normal-feet
#5
Kota Watanabe, Yasutoshi Ikeda, Daisuke Suzuki, Atsushi Teramoto, Takuma Kobayashi, Tomoyuki Suzuki, Toshihiko Yamashita
BACKGROUND: Patients with hallux valgus present a variety of symptoms that may be related to the type of deformity. Weightbearing affects the deformities, and the evaluation of the load response of tarsal bones has been mainly performed using two-dimensional plane radiography. The purpose of this study was to investigate and compare structural changes in the medial foot arch between patients with hallux valgus and normal controls using a computer image analysis technique and weightbearing computed tomography data...
January 17, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28110216/positron-emission-tomography-computed-tomography-and-4-hydroxynonenal-histidine-immunohistochemistry-reveal-differential-onset-of-lipid-peroxidation-in-primary-lung-cancer-and-in-pulmonary-metastasis-of-remote-malignancies
#6
Nevenka Piskač Živković, Mladen Petrovečki, Čedna Tomasović Lončarić, Igor Nikolić, Georg Waeg, Morana Jaganjac, Kamelija Žarković, Neven Žarković
: The Aim of the study was to reveal if PET-CT analysis of primary and of secondary lung cancer could be related to the onset of lipid peroxidation in cancer and in surrounding non-malignant lung tissue. METHODS: Nineteen patients with primary lung cancer and seventeen patients with pulmonary metastasis were involved in the study. Their lungs were analyzed by PET-CT scanning before radical surgical removal of the cancer. Specific immunohistochemistry for the major bioactive marker of lipid peroxidation, 4-hydroxynonenal (HNE), was done for the malignant and surrounding non-malignant lung tissue using genuine monoclonal antibody specific for the HNE-histidine adducts...
January 11, 2017: Redox Biology
https://www.readbyqxmd.com/read/28110088/regional-and-source-based-patterns-of-11-c-phno-binding-potential-reveal-concurrent-alterations-in-dopamine-d2-and-d3-receptor-availability-in-cocaine-use-disorder
#7
Patrick D Worhunsky, David Matuskey, Jean-Dominique Gallezot, Edward C Gaiser, Nabeel Nabulsi, Gustavo A Angarita, Vince D Calhoun, Robert T Malison, Marc N Potenza, Richard E Carson
Dopamine type 2 and type 3 receptors (D2R/D3R) appear critical to addictive disorders. Cocaine-use disorder (CUD) is associated with lower D2R availability and greater D3R availability in regions primarily expressing D2R or D3R concentrations, respectively. However, these CUD-related alterations in D2R and D3R have not been concurrently detected using available dopaminergic radioligands. Furthermore, receptor availability in regions of mixed D2R/D3R concentration in CUD remains unclear. The current study aimed to extend investigations of CUD-related alterations in D2R and D3R availability using regional and source-based analyses of [(11)C]-(+)-PHNO positron emission tomography (PET) of 26 individuals with CUD and 26 matched healthy comparison (HC) participants...
January 18, 2017: NeuroImage
https://www.readbyqxmd.com/read/28110067/poly-glycerol-sebacate-elastomer-supports-bone-regeneration-by-its-mechanical-properties-being-closer-to-osteoid-tissue-rather-than-to-mature-bone
#8
S H Zaky, K W Lee, J Gao, A Jensen, K Verdelis, Y Wang, A J Almarza, C Sfeir
: Mechanical load influences bone structure and mass. Arguing the importance of load-transduction, we investigated the mechanisms inducing bone formation using an elastomeric substrate. We characterized Poly (glycerol sebacate) (PGS) in-vitro for its mechanical properties, compatibility with osteoprogenitor cells regarding adhesion, proliferation, differentiation under compression versus static cultures and in-vivo for the regeneration of a rabbit ulna critical size defect. The load-transducing properties of PGS were compared in-vitro to a stiffer poly lactic-co- glycolic-acid (PLA/PGA) scaffold of similar porosity and interconnectivity...
January 18, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28110029/clinical-impact-of-sarcopenia-on-prognosis-in-pancreatic-ductal-carcinoma
#9
Go Ninomiya, Tsutomu Fujii, Suguru Yamada, Norimitsu Yabusaki, Kojiro Suzuki, Naoki Iwata, Mitsuro Kanda, Masamichi Hayashi, Chie Tanaka, Goro Nakayama, Hiroyuki Sugimoto, Masahiko Koike, Michitaka Fujiwara, Yasuhiro Kodera
OBJECTIVES: To investigate the impact of the body composition such as skeletal muscle, visceral fat and body mass index (BMI) on patients with resected pancreatic ductal adenocarcinoma (PDAC). METHODS: A total of 265 patients who underwent curative surgery for PDAC were examined in this study. The total skeletal muscle and fat tissue areas were evaluated in a single image obtained at the third lumber vertebra during a preoperative computed tomography (CT) scan. The patients were assigned to either the sarcopenia or non-sarcopenia group based on their skeletal muscle index (SMI) and classified into high visceral fat area (H-VFA) or low VFA (L-VFA) groups...
January 18, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28109943/regional-ventilation-during-phonation-in-professional-male-and-female-singers
#10
Louisa Traser, Jana Knab, Matthias Echternach, Hannah Fuhrer, Bernhard Richter, Hartmut Buerkle, Stefan Schumann
The respiratory system is a central part of voice production, but details in breath control during phonation are not yet fully understood. This study therefore aims to investigate regional ventilation of the lungs during phonation. It was analyzed in 11 professional singers using electrical impedance tomography during breathing and phonation with maximum phonation time. Our results show differences in impedance changes between phonation and exhalation in the courses of time and amplitude normalized curves. Furthermore, differences related to gender and professionalism were found in the temporal and spatial profiles of regional ventilation...
January 18, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28109934/coronary-plaque-burden-and-adverse-plaque-characteristics-are-increased-in-healthy-relatives-of-patients-with-early-onset-coronary-artery-disease
#11
Morten K Christiansen, Jesper M Jensen, Bjarne L Nørgaard, Damini Dey, Hans Erik Bøtker, Henrik K Jensen
OBJECTIVES: This study characterized and quantified subclinical atherosclerosis by coronary computed tomography angiography (CTA) in first-degree relatives of patients with early onset coronary artery disease (CAD). BACKGROUND: A strong family history of CAD is an important risk factor for adverse cardiovascular events. Whether predisposed individuals suffer an increased burden of coronary atherosclerosis and adverse plaque features is not known. METHODS: We included 88 healthy middle-aged first-degree relatives from 59 families with early onset CAD...
January 12, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28109933/integrating-ct-myocardial-perfusion-and-ct-ffr-in-the-work-up-of-coronary-artery%C3%A2-disease
#12
Adriaan Coenen, Alexia Rossi, Marisa M Lubbers, Akira Kurata, Atsushi K Kono, Raluca G Chelu, Sabrina Segreto, Marcel L Dijkshoorn, Andrew Wragg, Robert-Jan M van Geuns, Francesca Pugliese, Koen Nieman
OBJECTIVES: The aim of this study was to investigate the individual and combined accuracy of dynamic computed tomography (CT) myocardial perfusion imaging (MPI) and computed tomography angiography (CTA) fractional flow reserve (FFR) for the identification of functionally relevant coronary artery disease (CAD). BACKGROUND: Coronary CTA has become an established diagnostic test for ruling out CAD, but it does not allow interpretation of the hemodynamic severity of stenotic lesions...
January 12, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28109932/accuracy-of-noncontrast-quiescent-interval-single-shot-lower-extremity-mr-angiography-versus-ct%C3%A2-angiography-for-diagnosis-of-peripheral-artery-disease-comparison-with-digital-subtraction-angiography
#13
Akos Varga-Szemes, Julian L Wichmann, U Joseph Schoepf, Pal Suranyi, Carlo N De Cecco, Giuseppe Muscogiuri, Damiano Caruso, Ricardo T Yamada, Sheldon E Litwin, Christian Tesche, Taylor M Duguay, Shivraman Giri, Rozemarijn Vliegenthart, Thomas M Todoran
OBJECTIVES: This study sought to evaluate the image quality and diagnostic accuracy of noncontrast quiescent-interval single-shot (QISS) magnetic resonance angiography (MRA) versus iodine-contrast computed tomography angiography (CTA) in patients with peripheral artery disease (PAD), with invasive digital subtraction angiography (DSA) as the reference standard. BACKGROUND: QISS is a recently introduced noncontrast MRA technique. Although the diagnostic accuracy of QISS is reportedly similar to that of contrast-enhanced MRA, its performance compared with contrast-enhanced CTA, the most frequently used noninvasive modality for evaluation of PAD, is unknown...
January 12, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28109928/fdg-uptake-by-prosthetic-arterial-grafts-in-large-vessel-vasculitis-is-not%C3%A2-specific-for-active-disease
#14
Taryn Youngstein, Enrico Tombetti, Jaita Mukherjee, Tara D Barwick, Adil Al-Nahhas, Emyr Humphreys, Julian Nash, Jacqueline Andrews, Elena Incerti, Elisabetta Tombolini, Annalaura Salerno, Silvia Sartorelli, Giuseppe A Ramirez, Maurizio Papa, Maria Grazia Sabbadini, Luigi Gianolli, Francesco De Cobelli, Federico Fallanca, Elena Baldissera, Angelo A Manfredi, Maria Picchio, Justin C Mason
OBJECTIVES: This study investigated the incidence and clinical significance of arterial graft-associated uptake of fluorodeoxyglucose in large-vessel vasculitis (LVV). BACKGROUND: The role of (18)F-labeled fluorodeoxyglucose-positron emission tomography/computed tomography ([(18)F]FDG-PET/CT) in the management of LVV remains to be defined. Although [(18)F]FDG uptake at arterial graft sites raises concerns regarding active arteritis or infection, its clinical significance in LVV has never been formally studied...
January 11, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28109920/myocardial-blood-flow-and-inflammatory%C3%A2-cardiac-sarcoidosis
#15
Matthew J Kruse, Lara Kovell, Edward K Kasper, Martin G Pomper, David R Moller, Lilja Solnes, Edward S Chen, Thomas H Schindler
OBJECTIVES: This study sought to evaluate the effects of inflammatory sarcoid disease on coronary circulatory function and the response to immune-suppressive treatment. BACKGROUND: Although positron emission tomography assessment of myocardial inflammation is increasingly applied to identify active cardiac sarcoidosis, its effect on coronary flow and immune-suppressive treatment remains to be characterized. METHODS: Thirty-two individuals who were referred for positron emission tomography/computed tomography were evaluated for known or suspected cardiac sarcoidosis applying (18)F-fluorodeoxyglucose to determine inflammation and (13)N-ammonia to assess for perfusion deficits following a high-fat/low-carbohydrate diet and fasting state >12 h to suppress myocardial glucose uptake...
January 11, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28109918/%C3%AE-ct-based-trabecular-anisotropy-can-be-reproducibly-computed-from-hr-pqct-scans-using-the-triangulated-bone-surface
#16
Hadi S Hosseini, Ghislain Maquer, Philippe K Zysset
The trabecular structure can be assessed at the wrist or tibia via high-resolution peripheral quantitative computed tomography (HR-pQCT). Yet on this modality, the performance of the existing methods, evaluating trabecular anisotropy is usually overlooked, especially in terms of reproducibility. We thus proposed to compare the TRI routine used by SCANCO Medical AG (Brüttisellen, Switzerland), the classical mean intercept length (MIL), and the grey-level structure tensor (GST) to the mean surface length (MSL), a new method for evaluating a second-order fabric tensor based on the triangulation of the bone surface...
January 18, 2017: Bone
https://www.readbyqxmd.com/read/28109858/radiological-dilemma-in-an-extra-axial-petroclival-lesion-low-vs-high-grade
#17
Madhivanan Karthigeyan, Chirag Kamal Ahuja, Debjyoti Chatterjee, Pravin Salunke
BACKGROUND: Radiological differentiation between a low and high grade lesion is crucial on deciding the extent of resection and prognostication. Occasionally the imaging features can be confusing between the two. We report such a case which was a radiological dilemma. The lesion appeared apparently benign and extra-axial on routine magnetic resonance (MR) sequences. However, there were subtle clinical and imaging clues towards high grade lesion. CASE DESCRIPTION: A 27-year-old lady presented with multiple cranial nerve palsies, gait ataxia and features of raised intracranial pressure...
January 18, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28109795/bone-morphological-effects-on-post-implantation-remodeling-of-maxillary-anterior-buccal-bone-a-clinical-and-biomechanical-study
#18
Nobuhiro Yoda, Keke Zheng, Junning Chen, Wei Li, Michael Swain, Keiichi Sasaki, Qing Li
PURPOSE: This study combines clinical investigation with finite element (FE) analysis to explore the effects of buccal bone thickness (BBT) on the morphological changes of buccal bone induced by the loaded implant. METHODS: One specific patient who had undergone an implant treatment in the anterior maxilla and experienced the buccal bone resorption on the implant was studied. Morphological changes of the bone were measured through a series of cone-beam computed tomography (CT) scans...
January 18, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28109737/retinal-oxygen-from-animals-to-humans
#19
REVIEW
Robert A Linsenmeier, Hao F Zhang
This article discusses retinal oxygenation and retinal metabolism by focusing on measurements made with two of the principal methods used to study O2 in the retina: measurements of PO2 with oxygen-sensitive microelectrodes in vivo in animals with a retinal circulation similar to that of humans, and oximetry, which can be used non-invasively in both animals and humans to measure O2 concentration in retinal vessels. Microelectrodes uniquely have high spatial resolution, allowing the mapping of PO2 in detail, and when combined with mathematical models of diffusion and consumption, they provide information about retinal metabolism...
January 18, 2017: Progress in Retinal and Eye Research
https://www.readbyqxmd.com/read/28109724/the-role-of-cone-beam-ct-in-transcatheter-arterial-chemoembolization-for-hepatocellular-carcinoma-a-systematic-review-and-meta-analysis
#20
Leland Pung, Moiz Ahmad, Kerstin Mueller, Jarrett Rosenberg, Christopher Stave, Gloria L Hwang, Rajesh Shah, Nishita Kothary
PURPOSE: To review available evidence for use of cone-beam CT during transcatheter arterial chemoembolization in hepatocellular carcinoma (HCC) for detection of tumor and feeding arteries. MATERIALS AND METHODS: Literature searches were conducted from inception to May 15, 2016, in PubMed (MEDLINE), Scopus, and Cochrane Central Register of Controlled Trials. Searches included "cone beam," "CBCT," "C-arm," "CACT," "cone-beam CT," "volumetric CT," "volume computed tomography," "volume CT," AND "liver," "hepatic*," "hepatoc*...
January 18, 2017: Journal of Vascular and Interventional Radiology: JVIR
keyword
keyword
64632
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"