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https://www.readbyqxmd.com/read/29166756/use-of-imaging-techniques-in-large-vessel-vasculitis-and-related-conditions
#1
Annibale Versari, Nicolò Pipitone, Massimiliano Casali, Francois Jamar, Giulia Pazzola
Giant Cell Arteritis (GCA) and Takayasu's arteritis (TA) are large vessel vasculitis (LVV) primarily affecting the aorta and its major branches, mainly differentiated by the onset age (>50 years GCA and <40 years TA). In addition, temporal artery involvement and polymyalgia rheumatic are typical features of GCA, but not TA. Imaging techniques are required to secure the diagnosis of large-vessel vasculitides, and to monitor the disease course. Both morphological and metabolic imaging are involved. Morphological imaging is represented mainly by Computerized Tomography (CT), CT angiography, Magnetic Resonance (MR), MR angiography, Color-Doppler Sonography (CDS) and high-resolution CDS...
November 22, 2017: Quarterly Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29166754/advances-in-oncological-treatment-limitations-of-recist-1-1-criteria
#2
Serena Grimaldi, Marie Terroir, Caroline Caramella
INTRODUCTION: RECIST 1.1 criteria are the standard for the response assessment of most solid tumors on computed tomography (CT). Nevertheless, the emergence of new classes of treatment in the lasts decades has brought new challenges in the response evaluation. EVIDENCE ACQUISITION: A PubMed online database literature search was performed in order to identify papers in English with full text available published up to September 2017. EVIDENCE SYNTHESIS: Some oncologic treatments, such as anti-angiogenic agents, immunotherapy and local treatments, have proven to be effective despite atypical patterns of responses...
November 22, 2017: Quarterly Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29166753/interventional-locoregional-treatment-and-metabolic-response-advantages-of-using-pet-ct-in-the-evaluation-of-response-to-treatment
#3
Monica Finessi, Marilena Bellò, Francesca P Giunta, Andrea Veltri, Désirée Deandreis
INTRODUCTION: Interventional oncology locoregional therapies are validated treatment modalities for primary and secondary tumors in liver, lung, kidney and bone. At this time, there is no accordance in the choice of imaging modality to assess treatment response. Morphological imaging and RECIST 1.1 criteria based on size variation are limited by several critical points. On the other hand the role of functional imaging, in particular by [18F]-fluorodeoxyglucose ([18F]-FDG) positron emission tomography (PET), in both staging and response evaluation of locoregional treatments remains unclear because of the heterogeneous nature of available data...
November 22, 2017: Quarterly Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29166717/-left-atrial-appendage-volume-is-a-valuable-predictor-of-atrial-fibrillation-recurrence-after-radiofrequency-catheter-ablation
#4
G A Zheng, C Y Lin, L Weng, J D Chen
Objective: To investigate the association between the left atrial appendage (LAA) volume and atrial fibrillation (AF) recurrence after radiofrequency catheter ablation. Methods: We prospectively enrolled sixty-two patients with AF (40 cases with paroxysmal AF, 22 cases with persistent AF) who successfully underwent a first AF catheter ablation and had performed contrast-enhanced cardiac computed tomography (CT) prior to the procedure to measure LAA volumes in our hospital from January 2012 to August 2015. Circumferential pulmonary vein isolation was performed under the guidance of three-dimension mapping system (CARTO system)...
November 24, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/29166637/assessing-vessel-tone-during-coronary-artery-spasm-by-dual-acquisition-multidetector-computed-tomography-angiography
#5
Cai De Jin, Moo Hyun Kim, Eun Ju Kang, Young Rak Cho, Tae Ho Park, Ki Nam Lee, Victor Serebruany
BACKGROUND: Diminished vascular tone is an established biomarker of heart damage. Little is known about the extent of coronary vessel tone (CVT) with spasm as assessed by dual-acquisition multidetector computed tomography angiography (MCTA) in patients with vasospastic angina (VSA). OBJECTIVE: We evaluated the CVT modulated by intravenous nitrate injection (INI) using MCTA imaging in VSA patients. METHODS: Twenty-one VSA patients (60 ± 9 years; 76% males) who underwent initial MCTA (without morning vasodilation), followed by an intracoronary ergonovine provocation test were included...
November 23, 2017: Cardiology
https://www.readbyqxmd.com/read/29166539/an-unusual-cause-of-headache-and-sudden-death-of-a-young-sailor-postmortem-computed-tomography-and-histological-findings-of-a-fatal-retroperitoneal-malignant-mixed-germ-cell-tumor
#6
Belinda Lee, Michelle Chan, Ronald Goh
A 26-year-old Caucasian sailor, with no past medical history aside from headache for the last 1 week, was found dead in his cabin. The body was stored in a refrigerator on board and disembarked for autopsy 3 days later. Autopsy showed a large, nodular, necrotic and hemorrhagic retroperitoneal mass, and smaller hemorrhagic nodules in the brain, lungs, liver, and left kidney, with the brain being markedly edematous. Both testes were descended and normal. Histologically, the retroperitoneal mass showed a malignant mixed germ cell tumor comprising choriocarcinoma, embryonal carcinoma, and teratoma components...
November 22, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/29166493/dystrophic-calcification-of-maxillary-sinus-in-pediatric-patients-with-liver-transplantation-and-pigmentation-of-dental-organ
#7
Adriana Furtado de Macedo, Claudio Costa, Regina Helena Guedes da Motta Mattar, Ramiro Anthero de Azevedo
OBJECTIVE: To report a case of severe dystrophic calcification in maxillary sinus of a child with liver transplantation and dental organs pigmented by hyperbilirubinemia. CASE DESCRIPTION: female patient, 12 years old, with liver transplantation performed at the age of 7 due to extrahepatic biliary atresia (EHBA). The patient was receiving the immunosuppressant tacrolimus (2 mg daily). Intraoral clinical exam showed tooth green pigmentation by bilirubin. Cone-beam volumetric computed tomography (CT) was performed to verify radiographic density of pigmented dental elements...
November 17, 2017: Revista Paulista de Pediatria: Orgão Oficial da Sociedade de Pediatria de São Paulo
https://www.readbyqxmd.com/read/29166334/gastrointestinal-stromal-tumor-of-the-prostate-staging-and-evaluation-of-response-to-therapy-with-18f-fdg-pet-ct
#8
Yazan Z Alabed
A 49-year-old man presented for routine general physical examination was found with an enlarged prostate gland without associated symptoms. Ultrasound followed by computed tomography (CT) of abdomen and pelvis confirmed a markedly enlarged heterogeneous prostate gland. Subsequently, a staging flourine-18 fluorodeoxyglucose (F-FDG) positron emission tomography (PET/CT) scan revealed intensely FDG-avid mass involving the prostate, which was biopsied as gastrointestinal stromal tumor (GIST). The patient was treated with imatinib and a follow-up PET/CT scan showed complete metabolic response...
November 22, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29166203/temporal-profile-of-care-following-mild-traumatic-brain-injury-predictors-of-hospital-admission-follow-up-referral-and-six-month-outcome
#9
John K Yue, Ethan A Winkler, Sourabh Sharma, Mary J Vassar, Jonathan J Ratcliff, Frederick K Korley, Seth A Seabury, Adam R Ferguson, Hester F Lingsma, Sacha Meeuws, Opeolu M Adeoye, Jonathan W Rick, Caitlin K Robinson, Siena M Duarte, Esther L Yuh, Pratik Mukherjee, Sureyya S Dikmen, Thomas W McAllister, Ramon Diaz-Arrastia, Alex B Valadka, Wayne A Gordon, David O Okonkwo, Geoffrey T Manley
OBJECTIVE: To investigate the clinical management and medical follow-up of patients with mild traumatic brain injury (mTBI) presenting to emergency departments (EDs). METHODS: Overall, 168 adult patients with mTBI from the prospective, multicentre Transforming Research and Clinical Knowledge in TBI (TRACK-TBI) Pilot study with Glasgow Coma Scale (GCS) 13-15, no polytrauma and alive at six months were included. Predictors for hospital admission, three-month follow-up referral and six-month functional disability (Glasgow Outcome Scale-Extended (GOSE) ≤ 6) were analysed using multivariable regression...
2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/29166140/comparison-of-short-term-choroidal-thickness-and-retinal-morphological-changes-after-intravitreal-anti-vegf-therapy-with-ranibizumab-or-aflibercept-in-treatment-naive-eyes
#10
Magda Gharbiya, Rosalia Giustolisi, Jessica Marchiori, Alice Bruscolini, Fabiana Mallone, Valeria Fameli, Marcella Nebbioso, Solmaz Abdolrahimzadeh
PURPOSE: To evaluate choroidal thickness (CT) and retinal morphological changes in eyes with neovascular age-related macular degeneration (nAMD) following ranibizumab or aflibercept intravitreal treatment. MATERIALS AND METHODS: This was a prospective, observational, comparative study where 76 eyes of 76 consecutive patients with treatment-naive nAMD were consecutively enrolled and randomized to ranibizumab 0.5 mg or aflibercept 2 mg injections. Spectral-domain optical coherence tomography images of the choroid were obtained by enhanced depth imaging modality...
November 22, 2017: Current Eye Research
https://www.readbyqxmd.com/read/29165935/peripapillary-perfused-capillary-density-in-exfoliation-syndrome-and-exfoliation-glaucoma-versus-poag-and-healthy-controls-an-octa-study
#11
Yanin Suwan, Lawrence S Geyman, Masoud Aghsaei Fard, Apichat Tantraworasin, Toco Y Chui, Richard B Rosen, Robert Ritch
PURPOSE: To compare the peripapillary perfused capillary density (PCD) among eyes with exfoliation syndrome (XFS), exfoliation glaucoma (XFG), primary open-angle glaucoma (POAG), and controls. DESIGN: Observational, cross-sectional study. METHODS: Optical coherence tomography angiography (OCTA) images (4.5×4.5 mm) of the optic nerve head were obtained using a commercial spectral domain OCTA system (AngioVue Avanti RTVue-XR, OptoVue, Fremont, CA)...
November 22, 2017: Asia-Pacific Journal of Ophthalmology
https://www.readbyqxmd.com/read/29165902/multi-contrast-endomyocardial-imaging-by-single-channel-high-resolution-cross-polarization-optical-coherence-tomography
#12
Xinwen Yao, Yu Gan, Yuye Ling, Charles C Marboe, Christine P Hendon
A single-channel high-resolution cross-polarization (CP) optical coherence tomography (OCT) system is presented for multi-contrast imaging of human myocardium in one-shot measurement. The intensity contrast and functional contrasts, including the ratio between the cross- and co- polarization channels as well as the cumulative retardation, are reconstructed from the CP-OCT readout. By comparing the CP-OCT results with histological analysis, it is shown that the system can successfully delineate micro-structures in the myocardium and differentiate the fibrotic myocardium from normal or ablated myocardium based the functional contrasts provided by the CP-OCT system...
November 22, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/29165896/investigation-of-the-abnormal-nasal-aerodynamics-and-trigeminal-functions-among-empty-nose-syndrome-patients
#13
Chengyu Li, Alexander A Farag, Guillermo Maza, Sam McGhee, Michael A Ciccone, Bhakthi Deshpande, Edmund A Pribitkin, Bradley A Otto, Kai Zhao
BACKGROUND: Abnormal nasal aerodynamics or trigeminal functions have been frequently implicated in the symptomology of empty nose syndrome (ENS), yet with limited evidence. METHODS: Individual computed tomography (CT)-based computational fluid dynamics (CFD) was applied to 27 ENS patients to simulate their nasal aerodynamics and compared with 42 healthy controls. Patients' symptoms were confirmed with Empty Nose Syndrome 6-item Questionnaire (ENS6Q), 22-item Sino-Nasal Outcome Test (SNOT-22), and Nasal Obstruction Symptom Evaluation (NOSE) scores...
November 22, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/29165746/computed-tomographic-localization-of-the-central-sulcus-a-morphometric-study-in-adult-patients
#14
Dan Zimelewicz Oberman, Jorge Rasmussen, Maximiliano Toscano, Ezequiel Goldschmidt, Pablo Ajler
AIM: Despite advances in intraoperative navigation and electrocorticography, neuroanatomical knowledge is an essential tool for neurosurgical planning. The aim of this study was to accurately describe the relations between the anatomical landmarks of the cranial convexity and the main cortical structures. MATERIAL AND METHODS: A retrospective cross-sectional, observational study was performed. Computed tomography scans of 71 adult patients with no pathological imaging were analyzed...
November 1, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/29165599/direct-axillary-cannulation-with-open-seldinger-guided-technique-is-it-safe
#15
Davide Carino, Makoto Mori, Philip Y K Pang, Mrinal Singh, Sherif Elkinany, Maryann Tranquilli, Bulat A Ziganshin, John A Elefteriades
OBJECTIVES: Axillary artery cannulation is commonly used in thoracic aortic surgery, often utilizing a sidearm graft. Although our institutional preference is femoral cannulation, we use axillary cannulation in select cases with a 'dirty' aorta on computed tomography scan or intraoperative transoesophageal echocardiography. Since 2011, we have routinely used an open Seldinger-guided approach for axillary cannulation. Here, we report our experience with open Seldinger-guided technique, evaluating its safety and efficacy...
November 20, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29165533/muscle-quality-strength-and-lower-extremity-physical-performance-in-the-baltimore-longitudinal-study-of-aging
#16
N Chiles Shaffer, E Fabbri, L Ferrucci, M Shardell, E M Simonsick, S Studenski
BACKGROUND: Muscle quality is defined as the force generated by each volumetric unit of muscle tissue. No consensus exists on an optimal measure of muscle quality, impeding comparison across studies and implementation in clinical settings. It is unknown whether muscle quality measures that rely on complex and expensive tests, such as isokinetic dynamometry and computerized tomography correlate with lower extremity performance (LEP) any better than measures derived from simpler and less expensive tests, such as grip strength (Grip) and appendicular lean mass (ALM) assessed by DXA...
2017: Journal of Frailty & Aging
https://www.readbyqxmd.com/read/29165498/tomographic-magnetic-particle-imaging-of-cancer-targeted-nanoparticles
#17
Hamed Arami, Eric Teeman, Alyssa Troksa, Haydin Bradshaw, Katayoun Saatchi, Asahi Tomitaka, Sanjiv Sam Gambhir, Urs O Häfeli, Denny Liggitt, Kannan M Krishnan
Magnetic Particle Imaging (MPI) is an emerging, whole body biomedical imaging technique, with sub-millimeter spatial resolution and high sensitivity to a biocompatible contrast agent consisting of an iron oxide nanoparticle core and a biofunctionalized shell. Successful application of MPI for imaging of cancer depends on the nanoparticles (NPs) accumulating at tumors at sufficient levels relative to other sites. NPs' physiochemical properties such as size, crystallographic structure and uniformity, surface coating, stability, blood circulation time and magnetization determine the efficacy of their tumor accumulation and MPI signal generation...
November 22, 2017: Nanoscale
https://www.readbyqxmd.com/read/29165414/-torpedo-macu-lopathy-clinical-case
#18
A S Stoyukhina, N V Zhorzholadze, S S Danilov
The article presents a clinical case of torpedo maculopathy. This congenital disorder is most likely to be caused by changes in the retinal pigment epithelium (RPE) during retinal fissure closure. Visual function is usually unaffected and the condition is revealed at routine ophthalmic examination in children and teens. Optical coherence tomography showed the absence of RPE, photoreceptor damage, and massive thinning of the outer nuclear layer at the diseased site without a significant change in the total retinal thickness...
2017: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/29165285/hypofractionated-nodal-radiation-therapy-for-breast-cancer-was-not-associated-with-increased-patient-reported-arm-or-brachial-plexopathy-symptoms
#19
Nelson Leong, Pauline T Truong, Keith Tankel, Winkle Kwan, Lorna Weir, Ivo A Olivotto
PURPOSE: To determine whether nodal radiation therapy (RT) for breast cancer using modest hypofractionation (HF) with 2.25 to 2.5 Gy per fraction (fx) was associated with increased patient-reported arm symptoms, compared with conventional fractionation (CF) ≤2 Gy/fx. METHODS AND MATERIALS: Two cancer registries were used to identify subjects who received computed tomography-planned nodal RT for pT1-3, pN0-2, M0 breast cancer, from 2007 to 2010 at 2 cancer institutions...
December 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29164924/towards-enhanced-pet-quantification-in-clinical-oncology
#20
Habib Zaidi, Nicolas Karakatsanis
Positron emission tomography (PET) has, since its inception, established itself as the imaging modality of choice for the in vivo quantitative assessment of molecular targets in a wide range of biochemical processes underlying tumour physiology. PET image quantification enables to ascertain a direct link between the time-varying activity concentration in organs/tissues and the fundamental parameters portraying the biological processes at the cellular level being assessed. However, the quantitative potential of PET may be affected by a number of factors related to physical effects, hardware and software system specifications, tracer kinetics, motion, scan protocol design and limitations in current image-derived PET metrics...
November 22, 2017: British Journal of Radiology
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