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Orbital Mri

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https://www.readbyqxmd.com/read/30554244/barotraumatic-blowout-fracture-of-the-orbit-after-sneezing-cone-beam-ct-demonstration
#1
A Lo Casto, P Purpura, C Tudisca, G La Tona, S Salerno
A 40-year-old man with no history of trauma or previous sinus surgery complained sudden right diplopia after vigorous sneezing. The patient was submitted elsewhere to a MRI study for persisting diplopia, with inconclusive findings. One week later the patient was submitted to a maxillofacial cone beam CT (CBCT) in our Institution. A blowout fracture of the right orbital floor and lateral orbital wall with an intact orbital rim and a ipsilateral maxillary sinus effusion with an air liquid level, were detected at the CBCT study...
November 2018: La Clinica Terapeutica
https://www.readbyqxmd.com/read/30544318/volume-staged-gamma-knife-radiosurgery-for-orbital-venous-malformations
#2
(no author information available yet)
OBJECTIVEThis article is a preliminary evaluation of the efficacy of volume-staged Gamma Knife radiosurgery (GKRS) in the treatment of patients with orbital venous malformations (OVMs).METHODSTwenty patients with moderate to large OVMs were treated with volume-staged GKRS between March 2005 and October 2015. The series included 8 male and 12 female patients with an average age of 22.5 years (range 9-45 years). The diagnoses were confirmed intraoperatively and at pathological examination in 14 cases and presumed in accordance with clinical and imaging findings in 6 cases...
December 1, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/30541299/sarkoidosis-and-its-eye-ocular-manifestation-an-analysis-of-six-case-report
#3
P Sokačová, J Krásný, J Kozák, A Srp, J Šach, J Tomášová Borovanská, V Votava
AIM: To introduce the range of eye changes in sarcoidosis in the individual casuistics. MATERIALS: At the Ophthalmic Clinic of Teaching Hospital Královské Vinohrady in Prague were examined and treated six patients with ocular forms of sarcoidosis in the years from 1998 to 2015. Three patients were unilateral lesions of the lacrimal gland without systemic symptoms. One patient experienced orbital inflammatory syndrome that accompanied the hilar form of pulmonar sarcoidosis...
2018: Ceská a Slovenská Oftalmologie
https://www.readbyqxmd.com/read/30538310/t2-relaxation-mapping-and-fat-fraction-assessment-to-objectively-quantify-clinical-activity-in-thyroid-eye-disease-an-initial-feasibility-study
#4
Tilak Das, Jonathan C P Roos, Andrew J Patterson, Martin J Graves, Rachna Murthy
Imaging in thyroid eye disease (TED) is used to exclude other diagnoses, assess for apical crowding and plan surgery. But to quantify TED activity objectively, subjective clinical scoring assessments remain the norm. Magnetic resonance imaging (MRI) T2-relaxation times correlate with extra-ocular muscle (EOM) inflammation, but are confounded by signal from fat. We investigated whether T2-relaxation mapping in combination with fat fraction (FF) measurements could quantify disease activity in EOMs objectively...
December 11, 2018: Eye
https://www.readbyqxmd.com/read/30534843/mixed-nodular-and-morpheic-upper-eyelid-basal-cell-carcinoma-with-orbital-invasion-histological-and-clinical-features
#5
Victor Vlad Costan, Camelia Tamaş, Nicolaie Dobrin, Dan Alexandru Costache, Manuela Ciocoiu
Basal cell carcinoma (BCC) is the most common type of cancer located in the periocular area. We will present the clinical case of a 63-year-old male patient who was admitted to the 2nd Clinic of Neurosurgery, "Prof. Dr. Nicolae Oblu" Emergency Clinical Hospital, Iaşi, Romania, for an ulcerated tumor of about 0.8×0.7 cm in diameter with rolled edges and central necrosis in the upper eyelid with orbital invasion. According to the patient's personal history, he also underwent Cortisone treatment for dermatomyositis...
2018: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/30522522/the-eye-of-the-beholder-orbital-metastases-from-midgut-neuroendocrine-tumors-a-two-institution-experience
#6
Satya Das, Gino Pineda, Laura Goff, Rachel Sobel, Jordan Berlin, George Fisher
BACKGROUND: Metastases to the orbit occur rarely in midgut neuroendocrine tumor (NET) patients with only 20 cases reported to date. Patients typically present with bilateral involvement of the recti muscles and experience symptoms such as diplopia, proptosis, and decreased vision. Although orbital MRI remains the gold standard for imaging orbital disease, many orbital lesions are now detected on somatostatin-receptor (SSTR) based imaging such as 68Ga-DOTATATE PET-CT. CASE PRESENTATIONS: Patient 1 is a 72 year-old female with a well-differentiated G3 ileal NET who was incidentally diagnosed with orbital metastases during a hospitalization for pre-septal cellulitis in 2018...
December 6, 2018: Cancer Imaging: the Official Publication of the International Cancer Imaging Society
https://www.readbyqxmd.com/read/30522059/long-term-seizure-outcome-in-frontal-lobe-epilepsy-surgery
#7
Roberta Morace, Sara Casciato, Pier Paolo Quarato, Addolorata Mascia, Alfredo D'Aniello, Liliana G Grammaldo, Marco De Risi, Giancarlo Di Gennaro, Vincenzo Esposito
PURPOSE: The purpose of this study was to report long-term seizure outcome in patients who underwent frontal lobe epilepsy (FLE) surgery. METHOD: This retrospective study included 44 consecutive subjects who underwent resective surgery for intractable FLE at IRCCS NEUROMED (period 2001-2014), followed up for at least 2 years (mean: 8.7 years). All patients underwent noninvasive presurgical evaluation and/or invasive electroencephalography (EEG) monitoring when nonconcordant data were obtained or epileptogenic zone was hypothesized to be close to the eloquent cortex...
December 3, 2018: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/30515841/imaging-predictors-for-malignant-transformation-of-inverted-papilloma
#8
Carol H Yan, Charles C L Tong, Mrudula Penta, Vishal S Patel, James N Palmer, Nithin D Adappa, Jayakar V Nayak, Peter H Hwang, Zara M Patel
OBJECTIVES/HYPOTHESIS: Inverted papillomas (IPs) are benign tumors of the sinonasal tract with a malignant transformation potential. Predicting the transformation propensity of IPs and corresponding risk factors has long been a challenge. In this study, we aimed to use radiographic findings on magnetic resonance imaging (MRI) and computed tomography (CT) to help differentiate IP from IP-transformed squamous cell carcinomas (IP-SCC). STUDY DESIGN: Retrospective cohort study...
December 4, 2018: Laryngoscope
https://www.readbyqxmd.com/read/30514710/antibodies-to-myelin-oligodendrocyte-glycoprotein-in-chronic-relapsing-inflammatory-optic-neuropathy
#9
Hongjuan Liu, Huanfen Zhou, Junqing Wang, Quangang Xu, Shihui Wei
BACKGROUND/AIMS: To evaluate the status of myelin oligodendrocyte glycoprotein antibodies (MOG-IgG) in chronic relapsing inflammatory optic neuropathy (CRION) and investigate its different clinical characteristics and prognosis. METHODS: Patients diagnosed with CRION were recruited by the Neuro-ophthalmology Department of the Chinese People's Liberation Army General Hospital from December 2015 to April 2017. Based on antibody status, they were assigned to either the MOG-CRION or seronegative-CRION groups...
December 4, 2018: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/30514656/fdg-pet-hypometabolism-is-more-sensitive-than-mri-atrophy-in-parkinson-s-disease-a-whole-brain-multimodal-imaging-meta-analysis
#10
Franziska Albrecht, Tommaso Ballarini, Jane Neumann, Matthias L Schroeter
Recently, revised diagnostic criteria for Parkinson's disease (PD) were introduced (Postuma et al., 2015). Yet, except for well-established dopaminergic imaging, validated imaging biomarkers for PD are still missing, though they could improve diagnostic accuracy. We conducted systematic meta-analyses to identify PD-specific markers in whole-brain structural magnetic resonance imaging (MRI), [18F]-fluorodeoxyglucose-positron emission tomography (FDG-PET) and diffusion tensor imaging (DTI) studies. Overall, 74 studies were identified including 2323 patients and 1767 healthy controls...
November 15, 2018: NeuroImage: Clinical
https://www.readbyqxmd.com/read/30488306/image-guided-percutaneous-bleomycin-and-bevacizumab-sclerotherapy-of-orbital-lymphatic-malformations-in-children
#11
Omar Abdelaziz, Farouk Hassan, Kareem Elessawy, Sally Emad-Eldin, Rania El Essawy
PURPOSE: To evaluate the effectiveness and safety of image-guided percutaneous sclerotherapy using bleomycin for macrocystic and bevacizumab (Avastin™) for microcystic orbital lymphatic malformations in children. MATERIALS AND METHODS: Between October 2015 and July 2018, we prospectively evaluated 10 pediatric patients who presented clinically and radiologically with lymphatic malformations and were treated with percutaneous sclerotherapy. Patients with venous malformations were excluded...
November 28, 2018: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/30479724/optic-nerve-cysticercosis-at-the-orbital-apex-presenting-as-optic-neuritis
#12
Neha Goel
Purpose: To describe an unusual presentation of ocular cysticercosis and highlight the role of imaging in diagnosis. Case Report: A 33-year-old female presented with loss of vision in her right eye and features suggesting optic neuritis. Magnetic resonance imaging (MRI) of the brain and orbits revealed a cystic lesion with peripheral rim enhancement in the optic nerve substance at the orbital apex. An enzyme-linked immunosorbent assay test for cysticercosis further established the diagnosis as optic nerve cysticercosis...
October 2018: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/30478797/low-frequency-fluctuation-characteristics-in-rhesus-macaques-with-siv-infection-a-resting-state-fmri-study
#13
Jing Zhao, Feng Chen, Meiji Ren, Li Li, Aixin Li, Bin Jing, Hongjun Li
Simian immunodeficiency virus (SIV)-infected macaque is a widely used model to study human immunodeficiency virus. The purpose of the study is to discover the amplitude of low-frequency fluctuation (ALFF) and fractional ALFF (fALFF) changes in SIV-infected macaques. Seven rhesus macaques were involved in the longitudinal MRI scans: (1) baseline (healthy state); (2) SIV infection stage (12 weeks after SIV inoculation). ALFF and fALFF were subsequently computed and compared to ascertain the changes caused by SIV infection...
November 26, 2018: Journal of Neurovirology
https://www.readbyqxmd.com/read/30473986/chondrosarcoma-in-the-petrous-apex-case-report-and-review
#14
F Banaz, I Edem, I D Moldovan, S Kilty, G Jansen, F Alkherayf
Introduction  Surgical treatment of petrous apex chondrosarcoma is challenging due to the location of the tumor. Using an endoscopic technique for tumor resection is favored since it provides a minimally invasive approach. Case Presentation  A 57 years old female was admitted for acute onset of left abducens nerve palsy and occasional headache mainly on the left side of the retro-orbital area with some radiation to the left occiput. Magnetic resonance imaging (MRI) and computed tomography (CT), at the time of admission, were showed lytic lesion on the left petrous apex and left part of the clivus...
October 2018: Journal of Neurological Surgery Reports
https://www.readbyqxmd.com/read/30459906/coil-embolisation-of-post-traumatic-giant-supraclinoid-pseudoaneurysm-presenting-as-carotid-cavernous-fistula
#15
Dange Nitin Narayan, Singh Vikas Jayprakash, Dhar Arjun, Gupta Achal
This report documents the occurrence, diagnosis and treatment of a 29 year-old male patient who presented with progressive swelling of the left eye with associated progressive loss of vision, three months after sustaining a closed head injury in a road traffic accident. Magnetic resonance imaging (MRI) showed a large, ill-defined lesion in the left supraclinoid and paraclinoid region with variable contrast enhancement. A four vessel Digital Subtraction Angiography (DSA) showed a large, supra-clinoid pseudoaneurysm which had ruptured inferiorly into the roof of cavernous sinus, forming direct carotid cavernous fistula (CCF) which lead to dilatation of the superior ophthalmic vein and subsequent peri-orbital oedema and chemosis of conjunctiva...
October 2018: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/30453400/-clinical-features-diagnosis-and-treatment-of-silent-sinus-syndrome
#16
Z X Wang, Y Y Lai, F H Chen, J B Shi, K J Zuo
Objective: To explore the clinical features, diagnostic methods and therapeutic strategy of silent sinus syndrome (SSS). Methods: A retrospective study was made on eight SSS patients treated during 2013-2016 in Longgang ENT Hospital and Otorhinolaryngology Hospital of the First Affiliated Hospital of SUN Yat-sen University. The following clinical data, including demographic data, symptoms, history of trauma and surgery, signs, imaging examination, endoscopic surgery and postoperative outcomes, were analyzed to summarize the diagnosis and treatment experiences...
November 7, 2018: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/30448589/transclinoid-transcavernous-approach-to-a-giant-cavernous-sinus-hemangioma-2-dimensional-operative-video
#17
Tao Xu, Yong Yan, Hongxiang Wang, Juxiang Chen
This operative video demonstrates a transclinoid-transcavernous approach for the resection of a cavernous sinus hemangioma. The patient is a 42-yr-old female who presented with headache and blurred vision. Magnetic resonance imaging (MRI) demonstrated an enhancing mass in the right-side cavernous sinus and sella. The patient underwent an orbito-zygomatic craniotomy, extradural anterior clinoidectomy and transcavernous approach for tumor resection. Removal of the orbital roof, lateral orbital wall, zygomatic arch and anterior clinoid process with a high-speed drill was performed...
November 15, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/30430910/differences-in-cortical-gray-matter-atrophy-of-paraplegia-and-tetraplegia-after-complete-spinal-cord-injury
#18
Keerthana Deepti Karunakaran, Jie He, Jian Zhao, Jian-Ling Cui, Yu-Feng Zang, Zhong Zhang, Bharat B Biswal
Anatomical studies of SCI using Magnetic Resonance Imaging (MRI) report diverging observations, from 'no changes' to 'tissue atrophy in motor and non-motor regions.' These discrepancies among studies can be attributed to heterogeneity in extent, level and post-injury duration observed within the SCI population. But, no studies have investigated structural changes associated with different levels of injury (paraplegia vs. tetraplegia). High-resolution MRI images were processed using Voxel-Based Morphometry technique to compare regional GM volume (GMV) between 16 complete paraplegia and 7 complete tetraplegia SCI subjects scanned within two years of injury when compared to 22 age-matched healthy controls using one-way Analysis of Covariance (ANCOVA)...
November 15, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/30425661/pre-treatment-resting-state-functional-mr-imaging-predicts-the-long-term-clinical-outcome-after-short-term-paroxtine-treatment-in-post-traumatic-stress-disorder
#19
Minlan Yuan, Changjian Qiu, Yajing Meng, Zhengjia Ren, Cui Yuan, Yuchen Li, Meng Gao, Su Lui, Hongru Zhu, Qiyong Gong, Wei Zhang
Background: The chronic phase of post-traumatic stress disorder (PTSD) and the limited effectiveness of existing treatments creates the need for the development of potential biomarkers to predict response to antidepressant medication at an early stage. However, findings at present focus on acute therapeutic effect without following-up the long-term clinical outcome of PTSD. So far, studies predicting the long-term clinical outcome of short-term treatment based on both pre-treatment and post-treatment functional MRI in PTSD remains limited...
2018: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/30418935/a-head-coil-system-with-an-integrated-orbiting-transmission-point-source-mechanism-for-attenuation-correction-in-pet-mri
#20
A Renner, I Rausch, J Cal Gonzalez, R Frass-Kriegl, L Navarro de Lara, J Sieg, E Laistler, M Glanzer, D Dungl, E Moser, T Beyer, M Figl, W Birkfellner
The combination of positron emission tomography (PET) and magnetic resonance imaging (MRI) provides a benefit for diagnostic imaging. Still, attenuation correction (AC) is a challenge in PET/MRI compared to stand-alone PET and PET-computed tomography (PET/CT). In the absence of photonic transmission sources, AC in PET/MRI is usually based on retrospective segmentation of MR images or complex additional MR-sequences. However, most methods available today are still challenged by either the incorporation of cortical bone or substantial anatomical variations of subjects...
November 12, 2018: Physics in Medicine and Biology
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