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https://www.readbyqxmd.com/read/29685738/-idiopathic-orbital-inflammatory-syndrome-report-of-24-cases
#1
S Khochtali, M Zayani, I Ksiaa, I Ben Meriem, S Zaouali, B Jelliti, M Khairallah
BACKGROUND: Idiopathic orbital inflammatory syndrome (IOIS) is an inflammatory condition of unknown etiology. The inflammation may affect all the structures within the orbit (anterior, diffuse, apical, myositic, dacryoadenitis) and corresponds to uniquely orbital inflammation without an identifiable local cause or systemic disease. The goal of this study is to describe the clinical and radiographic characteristics of IOIS and discuss the role of orbital biopsy in this condition. PATIENTS AND METHODS: This is a retrospective review of the charts of 24 patients diagnosed with IOIS at Fattouma Bourguiba hospital, Monastir, Tunisia, from January 2007 to December 2015...
April 20, 2018: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/29682879/commissioning-an-in-room-mobile-ct-for-adaptive-proton-therapy-with-a-compact-proton-system
#2
Jasmine A Oliver, Omar Zeidan, Sanford L Meeks, Amish P Shah, Jason Pukala, Patrick Kelly, Naren R Ramakrishna, Twyla R Willoughby
PURPOSE: To describe the commissioning of AIRO mobile CT system (AIRO) for adaptive proton therapy on a compact double scattering proton therapy system. METHODS: A Gammex phantom was scanned with varying plug patterns, table heights, and mAs on a CT simulator (CT Sim) and on the AIRO. AIRO-specific CT-stopping power ratio (SPR) curves were created with a commonly used stoichiometric method using the Gammex phantom. A RANDO anthropomorphic thorax, pelvis, and head phantom, and a CIRS thorax and head phantom were scanned on the CT Sim and AIRO...
April 6, 2018: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/29678501/anatomic-factors-affecting-the-use-of-ultrasound-to-predict-vocal-fold-motion-a-pilot-study
#3
Maheer M Masood, Benjamin Huang, Allie Goins, Trevor G Hackman
PURPOSE: Ultrasonography is a well-established modality for visualization of head and neck anatomy. Using ultrasound to detect vocal fold mobility has been described before, but no study has evaluated factors affecting the exam reliability. The aim of the study is to determine anatomic factors influencing the reliability of ultrasound to detect vocal fold motion. Methods and materials Patients underwent ultrasound evaluation and flexible laryngoscopy to assess vocal fold motion from August 2015 to March 2016...
April 13, 2018: American Journal of Otolaryngology
https://www.readbyqxmd.com/read/29674419/comparative-study-of-the-novel-rgd-motif-containing-itg%C3%AE-v%C3%AE-6-binding-peptides-sflap3-and-sfitgv6-for-diagnostic-application-in-hnscc
#4
Saskia Roesch, Thomas Lindner, Max Sauter, Anastasia Loktev, Paul Flechsig, Martin Müller, Walter Mier, Rolf Warta, Gerhard Dyckhoff, Christel Herold-Mende, Uwe Haberkorn, Annette Altmann
Alpha v beta 6 (αvβ6) integrin is overexpressed by several carcinomas, and thus considered as target for diagnostic imaging and anti-cancer therapies. Recently, we presented SFITGv6 as a novel potential tracer for imaging and targeted therapy of αvβ6 integin-positive carcinomas. Here, we analyzed affinity and specificity of five native αvβ6 integrin-specific binders in comparison to SFITGv6. Methods: Sunflower trypsin inhibitor (SFTI)-1-based peptides containing arginine-glycine-aspartic acid (RGD) motif-spanning octamers of fibronectin (SFFN1), tenascin C (SFTNC), vitronectin (SFVTN), and latency-associated peptides (LAP) 1 (SFLAP1), and 3 (SFLAP3) were synthesized and their binding potential to αvβ6 integrin-expressing head and neck squamous cell carcinoma (HNSCC) cell lines was evaluated...
April 19, 2018: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/29671151/an-atypical-case-of-neurosarcoidosis-presenting-with-neovascular-glaucoma
#5
REVIEW
Melissa Vereecken, Karolien Hollanders, Deborah De Bruyn, Virginie Ninclaus, Julie De Zaeytijd, Ilse De Schryver
BACKGROUND: Sarcoidosis, a multisystem, granulomatous disorder, sometimes manifests with a neuro-ophthalmic subtype. The latter can pose a diagnostic challenge, especially when ocular symptoms appear before systemic involvement, as the clinical picture then can be non-specific and systemic laboratory and standard imaging investigations can be negative. FINDINGS: A 71-year-old woman presented with a 4-month history of sudden-onset visual loss in the left eye. Slit lamp examination revealed anterior chamber cells, iris, and angle neovascularization...
April 18, 2018: Journal of Ophthalmic Inflammation and Infection
https://www.readbyqxmd.com/read/29665705/topogram-based-tube-current-modulation-of-head-computed-tomography-for-optimizing-image-quality-while-protecting-the-eye-lens-with-shielding
#6
Ming-Fang Lin, Chia-Yuen Chen, Yuan-Hao Lee, Chia-Wei Li, Leo E Gerweck, Hao Wang, Wing P Chan
Background Multiple rounds of head computed tomography (CT) scans increase the risk of radiation-induced lens opacification. Purpose To investigate the effects of CT eye shielding and topogram-based tube current modulation (TCM) on the radiation dose received by the lens and the image quality of nasal and periorbital imaging. Material and Methods An anthropomorphic phantom was CT-scanned using either automatic tube current modulation or a fixed tube current. The lens radiation dose was estimated using cropped Gafchromic films irradiated with or without a shield over the orbit...
January 1, 2018: Acta Radiologica
https://www.readbyqxmd.com/read/29660996/annals-express-a-case-of-hereditary-coproporphyria-with-posterior-reversible-encephalopathy-and-novel-cpox-gene-mutation-c-863t-g-p-leu288trp
#7
Deborah Lambie, Christopher M Florkowski, Chris Sies, Anthony Raizis, Wai-Kwan Siu, Cindy Towns
A 21 year old female had recurrent presentations to the Emergency Department (ED) with myalgia, vomiting, abdominal pain and subsequently developed generalized seizures. She was volume depleted with a plasma sodium of 125 mmol/L (reference interval 135-145) and she had fluctuating hypertension. Acute porphyria was suspected and confirmed with raised urine porphobilinogen (PBG)/creatinine ratio of 12·4 umol/mmol (reference interval < 1·5) and she was treated with intravenous haem arginate. Urinary porphyrin/creatinine ratio was 673 nmol/mmol, (reference interval <35) and faecal porphyrins 2430 umol/kg dry weight (reference interval <200) were markedly elevated, with raised faecal CIII:CI ratio, consistent with acute coproporphyria...
January 1, 2018: Annals of Clinical Biochemistry
https://www.readbyqxmd.com/read/29628631/dosimetric-and-radiobiological-evaluation-of-patient-setup-accuracy-in-head-and-neck-radiotherapy-using-daily-computed-tomography-on-rails-based-corrections
#8
Ines-Ana Jurkovic, Esengul Kocak-Uzel, Abdallah Sherif Radwan Mohamed, Eleftherios Lavdas, Sotirios Stathakis, Nikos Papanikolaou, David C Fuller, Panayiotis Mavroidis
Introduction: This study evaluates treatment plans aiming at determining the expected impact of daily patient setup corrections on the delivered dose distribution and plan parameters in head-and-neck radiotherapy. Materials and Methods: In this study, 10 head-and-neck cancer patients are evaluated. For the evaluation of daily changes of the patient internal anatomy, image-guided radiation therapy based on computed tomography (CT)-on-rails was used. The daily-acquired CT-on-rails images were deformedly registered to the CT scan that was used during treatment planning...
January 2018: Journal of Medical Physics
https://www.readbyqxmd.com/read/29623601/effects-of-minimally-invasive-approaches-on-chronic-subdural-hematoma-by-novel-yl-1-puncture-needle-and-burr-hole-methods
#9
Min Xu, Wen-Hua Wang, Sheng-Qiang Zhu, Wei-Guo Tan, Xue-Gang Jin, Wei Lu, Long Chen
The objective of this study is to investigate effects of minimally invasive approaches on outcome of chronic subdural hematoma (CSDH) by novel YL-1 puncture needle and burr-hole methods. A retrospective analysis was performed in 158 hospitalized CSDH patients from January, 2013 to December, 2017 in Kunshan Hospital of Traditional Chinese Medicine. Patients' gender, age, history of trauma, volume of hematoma, hematoma location, application of urokinase, surgical approach, the operation time, hospitalized time, and CT scans 3 months after discharge were recorded...
April 5, 2018: Acta Neurologica Belgica
https://www.readbyqxmd.com/read/29620422/the-increase-in-copeptin-levels-in-mild-head-trauma-does-not-predict-the-severity-and-the-outcome-of-brain-damage
#10
Luigi M Casello, Livia Salmi, Isabella Zanotti, Clara A Gardino, Marco Baldrighi, Fabio Settanni, Gian C Avanzi
AIM: To investigate the copeptin prognostic role in mild head trauma. METHODS: We enrolled 105 adult patients who entered the emergency room because of recent mild head trauma; we evaluated: clinical picture, imaging and laboratory data (including copeptin). RESULTS: Copeptin resulted higher in mild head trauma patients compared with controls: 29.89 pmol/l versus 7.05 pmol/l; (p = 0.0008). Copeptin failed in identifying patients with or without brain lesions detected by CT scan, and patients with or without adverse events during the 30 days follow-up...
April 5, 2018: Biomarkers in Medicine
https://www.readbyqxmd.com/read/29616662/monte-carlo-proton-dose-calculations-using-a-radiotherapy-specific-dual-energy-ct-scanner-for-tissue-segmentation-and-range-assessment
#11
Isabel P Almeida, Lotte E J R Schyns, Ana Vaniqui, Brent van der Heyden, Georgios Dedes, Andreas Franz Resch, Florian Kamp, Jaap D Zindler, Katia Parodi, Guillaume Landry, Frank Verhaegen
Proton beam ranges derived from dual-energy computed tomography (DECT) images from a dual-spiral radiotherapy (RT)-specific CT scanner were assessed using Monte Carlo (MC) dose calculations. Images from a dual-source and a twin-beam DECT scanner were also used to establish a comparison to the RT-specific scanner. Proton ranges extracted from conventional single-energy CT (SECT) were additionally performed to benchmark against literature values. Using two phantoms, a DECT methodology was tested as input for Geant4 MC proton dose calculations...
April 4, 2018: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29603477/challenges-and-limitations-in-the-diagnosis-of-atrio-esophageal-fistula
#12
Francis J Ha, Hui-Chen Han, Prashanthan Sanders, Andrew W Teh, David O'Donnell, Omar Farouque, Han S Lim
INTRODUCTION: Atrio-esophageal fistula (AEF) is a dire complication of atrial fibrillation ablation. The diagnostic yield of computed tomography (CT) chest, the role and timing of repeat testing, and the value of other investigations in the diagnosis of AEF is uncertain. METHODS: We systematically reviewed published AEF cases to evaluate radiological, bedside and biochemical investigations for AEF (registered on PROSPERO [CRD42017077493]). RESULTS: Eighty-seven articles with 126 patients (median age, 59 years; male, 71%) were included in the analysis...
March 30, 2018: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/29600103/report-of-a-lung-carcinoma-extended-to-the-left-atrium-through-pulmonary-vein
#13
Federico Cipriano, Lycio U Dessoti, Alfredo José Rodrigues, Walter Vilella de Andrade Vicente, Fernando Chahud, Paulo Roberto B Evora
Lung cancers may extend along or grow through the pulmonary veins to invade or lie within the left atrium (LA). A 62-year-old man, previously healthy, presented with 1-month ventilatory-independent right hemithorax back pain, dry cough and large effort dyspnea. He also referred weight loss of 12 kg in 10 months and denied hemoptysis. As antecedents, he smoked for 40 years and moderate daily alcoholism. On physical examination, the patient was in good general condition, hydrated and regular respiration at rest [blood pressure (BP) =120/80 mmHg; heart rate (HR) =90 bpm; respiratory rate (RR) =16 rpm]...
January 2018: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29594224/prospective-analysis-of-in-vivo-landmark-point-based-mri-geometric-distortion-in-head-and-neck-cancer-patients-scanned-in-immobilized-radiation-treatment-position-results-of-a-prospective-quality-assurance-protocol
#14
(no author information available yet)
Purpose: Uncertainties related to geometric distortion are a major obstacle for effectively utilizing MRI in radiation oncology. We aim to quantify the geometric distortion in patient images by comparing their in-treatment position MRIs with the corresponding planning CTs, using CT as the non-distorted gold standard. Methods: Twenty-one head and neck cancer patients were imaged with MRI as part of a prospective Institutional Review Board approved study. MR images were acquired with a T2 SE sequence (0...
December 2017: Clinical and Translational Radiation Oncology
https://www.readbyqxmd.com/read/29592987/seizure-induced-unilateral-posterior-dislocation-of-the-shoulder-a-diagnosis-not-to-be-missed
#15
Andrew Roy McKean, Shankar Kumar, Greg Michael McKean, Demitrios Tzias
A man in his mid-50s with a history of bladder carcinoma presented to the Emergency Department (ED) following a witnessed tonic-clonic seizure. Computed Tomography (CT) scanning of his brain revealed an indeterminate mass lesion in the left parietal region. The patient described bilateral shoulder pain prompting plain film radiographs with axial views, but no obvious abnormality was identified by the ED staff. Staging CT scanning did not reveal any evidence of underlying malignancy but revealed dislocation of the left humeral head with a large reverse Hill-Sachs lesion and posteriorly displaced reverse Bankart lesion...
March 28, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29588902/gross-total-resection-of-chordoid-glioma-of-the-third-ventricle-via-anterior-interhemispheric-transcallosal-transforaminal-approach-at-two-stages
#16
Ihsan Dogan, Melih Ucer, Mustafa Kemal Başkaya
Suprasellar tumors in particular tumors located in the retrochiasmatic area and anterior third ventricle are challenging cases in terms of optimal surgical exposure. Several approaches have been described including transsylvian, translamina terminalis, endoscopic endonasal, and anterior interhemispheric. Each approach has advantages and disadvantages. In this video, we present a case of retrochiasmatic anterior third ventricular tumor that was operated via anterior interhemispheric transcallosal transforaminal approach...
April 2018: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/29575685/high-sensitivity-and-negative-predictive-value-of-sentinel-lymph-node-biopsy-in-a-retrospective-early-stage-oral-cavity-cancer-cohort-in-the-northern-netherlands
#17
K Boeve, K P Schepman, E Schuuring, J L N Roodenburg, G B Halmos, B A C van Dijk, R A C Boorsma, J G A M de Visscher, A H Brouwers, B van der Vegt, M J H Witjes
OBJECTIVES: In cT1-2N0 oral squamous cell carcinoma (OSCC) occult metastases are detected in 23 - 37% of cases. Sentinel lymph node biopsy (SLNB) was introduced in head and neck cancer as a minimally invasive alternative for an elective neck dissection in neck staging. Meta-analyses of SLNB accuracy shows heterogeneity in the existing studies for reference standards, imaging techniques and pathological examination. The aim of this study was to assess the sensitivity and negative predictive value (NPV) of the SLNB in detecting occult metastases in cT1-2N0 OSCC in a well-defined cohort...
March 25, 2018: Clinical Otolaryngology
https://www.readbyqxmd.com/read/29573001/a-cadaveric-study-validating-in-vitro-monitoring-techniques-to-measure-the-failure-mechanism-of-glenoid-implants-against-clinical-ct
#18
Sarah Junaid, Thomas Gregory, Shirley Fetherston, Roger Emery, Andrew A Amis, Ulrich Hansen
Definite glenoid implant loosening is identifiable on radiographs, however, identifying early loosening still eludes clinicians. Methods to monitor glenoid loosening in vitro have not been validated to clinical imaging. This study investigates the correlation between in vitro measures and CT images. Ten cadaveric scapulae were implanted with a pegged glenoid implant and fatigue tested to failure. Each scapulae were cyclically loaded superiorly and CT scanned every 20,000 cycles until failure to monitor progressive radiolucent lines...
March 23, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29564291/prevalence-of-cam-deformity-with-associated-femoroacetabular-impingement-syndrome-in-hip-joint-computed-tomography-of-asymptomatic-adults
#19
Jun Han, Seok-Hyung Won, Jung-Taek Kim, Myung-Hoon Hahn, Ye-Yeon Won
Purpose: Femoroacetabular impingement (FAI) is considered an important cause of early degenerative arthritis development. Although three-dimensional (3D) imaging such as computed tomography (CT) and magnetic resonance imaging are considered precise imaging modalities for 3D morphology of FAI, they are associated with several limitations when used in out-patient clinics. The paucity of FAI morphologic data in Koreans makes it difficult to select the most effective radiographical method when screening for general orthopedic problems...
March 2018: Hip & Pelvis
https://www.readbyqxmd.com/read/29564051/where-is-the-ulnar-styloid-process-identification-of-the-absolute-location-of-the-ulnar-styloid-process-based-on-ct-and-verification-of-neutral-forearm-rotation-on-lateral-radiographs-of-the-wrist
#20
Seung-Han Shin, Yong-Suk Lee, Jin-Woo Kang, Dong-Young Noh, Joon-Yong Jung, Yang-Guk Chung
Background: The location of the ulnar styloid process can be confusing because the radius and the hand rotate around the ulna. The purpose of this study was to identify the absolute location of the ulnar styloid process, which is independent of forearm pronation or supination, to use it as a reference for neutral forearm rotation on lateral radiographs of the wrist. Methods: Computed tomography (CT) images of 23 forearms taken with elbow flexion of 70° to 90° were analyzed...
March 2018: Clinics in Orthopedic Surgery
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