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Mri and anesthesia

J H Liang, Y Cheng, X Deng, Y Y Yu, X X Li
: Objective: To evaluate the efficacy of large spot indirect ophthalmoscopy laser alone or combined with systemic chemotherapy in the treatment of early and middle stage retinoblastoma. Methods: Retrospective series case study. Clinical data of 21 patients (22 eyes) who were diagnosed as retinoblastoma (RB) in Peking University People's Hospital from March 2009 to August 2014 were collected. Medical and family history, ocular ultrasound, orbital and cranial MRI or CT examination of RB Children were detailed recorded...
October 11, 2016: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
R Boissier, C Udrescu, X Rebillard, J E Terrier, A Faix, O Chapet, D Azria, M Devonec, P Paparel, A Ruffion
OBJECTIVE: To describe a technique combining the implantation of fiducials and a prostatic spacer (hyaluronic acid (HA)) to decrease the rectal toxicity after an image-guided EBRT with hypofractionation for prostate cancer and to assess the tolerance and the learning curve of the procedure. MATERIAL & METHOD: Thirty patients with prostate cancer at low or intermediate risk were included in a phase II trial: image-guided EBRT of 62Gy in 20 fractions of 3.1Gy with intensity-modulated radiotherapy (IMRT)...
October 7, 2016: Urology
Keitaro Yoshida, Yu Mimura, Ryosuke Ishihara, Hiroshi Nishida, Yuji Komaki, Tomohito Minakuchi, Tomokazu Tsurugizawa, Masaru Mimura, Hideyuki Okano, Kenji F Tanaka, Norio Takata
BACKGROUND: Functional magnetic resonance imaging (fMRI) in mice is typically performed under anesthesia due to difficulties in holding the head of awake mice stably with a conventional three-point fixation method that uses a tooth-bar and earplugs. Although some studies have succeeded in fMRI in awake mice by attaching a head-post on the skull, this cannot be applied to fMRI using a high signal-to-noise ratio (SNR) cryogenic MRI-detector, CryoProbe, because it covers the head of a mouse closely...
October 1, 2016: Journal of Neuroscience Methods
Wei Phin Tan, Andrew Mazzone, Stephanie Shors, Nency Antoine, Shahid Ekbal, Narendra Khare, Charles McKiel, Dennis Pessis, Leslie Deane
INTRODUCTION AND OBJECTIVE: The Prostate Imaging Reporting and Data System (PI-RADS) score was developed to evaluate lesions in the peripheral and transition zone on multiparametric magnetic resonance imaging (mpMRI) of the prostate. We aim to determine if the PI-RADS scoring system can be used to evaluate central zone lesions on mpMRI. MATERIALS AND METHODS: A retrospective review of 73 patients who underwent mpMRI/ultrasound (US) fusion-guided biopsy of 143 suspicious lesions between February 2014 and October 2015 was performed...
September 27, 2016: Urologic Oncology
Zvi Jacob, Rany Makaryus
No abstract text is available yet for this article.
November 2016: Journal of Clinical Anesthesia
Margaret J Trost, Melissa Cowell, Jennifer Cannon, Kendra Mitchell, Kevin Waloff, Humberto Avila, Sanjay Chand, Christopher J Russell
PURPOSE: Children with sleep apnea may be at increased risk for overnight respiratory events (ORE) following anesthesia. We sought to identify ORE risk factors in sleep apnea patients sedated for magnetic resonance imaging (MRI). METHODS: One thousand four hundred seven hospitalizations for children with sleep apnea (by ICD-9 code) occurred at our institution from 5/1/2011 to 2/1/2015. One hundred twenty-seven (9 %) encounters were solely for post-MRI observation representing 96 unique patients...
September 28, 2016: Sleep & Breathing, Schlaf & Atmung
Lillian M Lai, Joseph Y Cheng, Marcus T Alley, Tao Zhang, Michael Lustig, Shreyas S Vasanawala
PURPOSE: To assess the feasibility of ferumoxytol-enhanced anesthesia-free cardiac MRI in neonates and young infants for complex congenital heart disease (CHD). MATERIALS AND METHODS: With Institutional Review Board approval, 21 consecutive neonates and young infants (1 day to 11 weeks old; median age of 3 days) who underwent a rapid two-sequence (MR angiography [MRA] and four-dimensional [4D] flow) MRI protocol with intravenous ferumoxytol without sedation (n = 17) or light sedation (n = 4) at 3 Tesla (T) (except one case at 1...
September 28, 2016: Journal of Magnetic Resonance Imaging: JMRI
Samia Frioui Mahmoudi, Emna Toulgui, Sonia Jemni, Khalil Ben Jeddou, Mariem Gaddour, Afif Zaoui, Faycel Khachnaoui
OBJECTIVE: To talk through our observation and a review of the literature about radiological features and diagnostic difficulties of this particular form of disk migration. OBSERVATIONS: We report the case of a 29 year-old patient who presented following the wearing of a heavy load bilateral acute lombosciatalgies associated with a deficit of both lower limbs and urinary incontinence. Clinical examination revealed a motor deficit of sural triceps and foot relievers estimated1 in bilateral, hypoesthesia of the anterolateral side of the two legs and the feet, low bone tendon reflexes were abolished, anesthesia in the saddle, hypotonic anal sphincter and bladder distension...
September 2016: Annals of Physical and Rehabilitation Medicine
Einar Dale, Jon M Moan, Terje A Osnes, Trond V Bogsrud
FDG PET/CT is perceived as a valuable diagnostic tool in addition to the standard diagnostic workup for patients with isolated neck lymph nodes of squamous cell carcinoma of unknown primary (SCCUP). For patients with SCCUP intended for primary radiotherapy, we hypothesize that the previously reported FDG PET/CT detection rates are too high. From 2008 to 2015, 30 SCCUP patients were examined with FDG PET/CT. The objective of the FDG PET/CT examination was twofold: (1) improve the radiotherapy target definition, and (2) identify the primary cancer...
September 26, 2016: European Archives of Oto-rhino-laryngology
Scott M Thompson, Krzysztof R Gorny, Danielle E Jondal, Karen L Rech, Samir Mardini, David A Woodrum
A 17-year-old previously healthy female presented with a progressive soft tissue infiltrative process involving the neck and thorax. Extensive diagnostic evaluation including multiple imaging, laboratory, and biopsy studies was nondiagnostic. Due to an urgent need to establish a diagnosis and several previous nondiagnostic biopsies, she was referred to interventional radiology for MRI-guided wire localization immediately prior to open surgical biopsy. Under general anesthesia, wires were placed in the areas of increased T2 signal within the bilateral splenius capitis muscles using intermittent MRI-guidance followed by immediate surgical biopsy down to the wires...
September 19, 2016: Cardiovascular and Interventional Radiology
Anna Puigdellívol-Sánchez, Miguel A Reina, Xavier Sala-Blanch, Jaume Pomés-Talló, Alberto Prats-Galino
The classical recommendation for paramedian approaches is needle insertion 1-2 cm paramedian and an angle of 10°-15° medial-cephalad to the plane of the back, but contact with vertebrae is frequent. A mathematical approach to individualizing punctures is proposed on the basis of skin-dural sac distance (d): Optimal angle ∼ inverse cosine [d/ (1+d2) ] and the distance covered by the needle ∼ 1+d2 for 1 cm paramedian punctures. The inferred angles were compared to optimal angles leading to the central dorsal part of the dural sac from 1 to 2 cm paramedian, measured by Magnetic Resonance Imaging (MRI) in seven cases and in a short stature volunteer (1...
September 6, 2016: Clinical Anatomy
Otto M Henriksen, Lisbeth Marner, Ian Law
The introduction of hybrid PET/MRI systems allows simultaneous multimodality image acquisition of high technical quality. This technique is well suited for the brain, and particularly in dementia and neuro-oncology. In routine use combinations of well-established MRI sequences and PET tracers provide the most optimal and clinically valuable protocols. For dementia the [18F]-fluorodeoxyglucose (FDG) has merit with a simultaneous four sequence MRI protocol of 20 min supported by supplementary statistical reading tools and quantitative measurements of the hippocampal volume...
October 2016: PET Clinics
Eric Hohn, Nirav K Pandya
BACKGROUND: Medial patellofemoral ligament (MPFL) reconstruction is one of several surgical procedures used to treat patellofemoral instability. Use of allograft tissue can preserve autogenous tissue and may be preferable in patients with connective tissue disorders or ligamentous laxity. Although there are successful reports in adults, it is unclear if the use of allograft tissue in MPFL reconstruction can restore patellofemoral stability in children and adolescents. QUESTIONS/PURPOSES: (1) Does allograft tissue in MPFL reconstruction in pediatric and adolescent patients restore patellar stability? (2) What complications were associated with allograft MPFL reconstructions in children and adolescents? METHODS: Between June 2012 and August 2015, one surgeon (NKP) performed 26 MPFL reconstructions in 23 patients with gracilis allograft for traumatic patellar instability...
September 2, 2016: Clinical Orthopaedics and related Research
K Yamamoto, Y Nakayama, I Yamamoto, Y Matsusue, H Shimotsuji, T Kirita
A case of a ferromagnetic foreign body in a medically compromised patient was reported. The patient was a 45-year-old male who consulted our department complaining of a foreign body accidentally impacted in the right cheek. X-ray examination revealed a foreign body at the lateral aspect of the right mandibular ramus. The removal of the foreign body was scheduled, but the patient did not return for the procedure. After 8 years he revisited our department for the removal of the foreign body, because it had been found to be ferromagnetic and a barrier to MRI examination...
2016: Open Dentistry Journal
Soo Jeong Yoon, Dae Young Yoon, Young Kwon Cho, Sora Baek, Kyoung Ja Lim, Young Lan Seo, Eun Joo Yun
BACKGROUND: Animal research has played an important role in the field of radiology. PURPOSE: To evaluate the characteristics and quality of published radiological animal research. MATERIAL AND METHODS: A PubMed search was performed for radiological animal research articles (defined as studies using animal models with a radiologist as the first author) published in 1994, 2004, and 2014. The following information was extracted from each article: journal name, radiological subspecialty, imaging technique, animal species, number of animals used, number of authors, declared funding, country of origin, methodological quality, and ethical quality...
August 26, 2016: Acta Radiologica
Yolanda Y Huang, Caleb Ing, Gouhua Li, Lena S Sun
INTRODUCTION: Although animal studies have consistently demonstrated long-term neurocognitive deficits following early anesthetic exposure under certain conditions, risk in human children remains unknown. Magnetic resonance imaging (MRI) in young patients often requires anesthesia to facilitate image acquisition. We studied MRI utilization in a pediatric population, and associated use of anesthesia for ambulatory MRI. MATERIALS AND METHODS: Data were obtained from the New York State Inpatient Database and State Ambulatory Surgery and Services Database on MRI performed in children under the age of 18 years from 2005 to 2011...
August 25, 2016: Journal of Neurosurgical Anesthesiology
Mehmet Hüseyin Akgul, Ferruh Gezen, Ali Kemal Uzunlar
OBJECTIVE: Esthesioneuroblastoma accounted for only 6% of the malignant nasal cavity neoplasms (ENB) is a rare tumor which originates from the olfactory epithelium. ENB's are locally agresive and can metastasize by lymphatic and hematogenous routes. A patient with the mass on the nasal dorsum was reported in this article. CASE HISTORY: A 52-year-old-man admitted to the hospital with a 3 months history of progressive nasal obstruction, epistaxis and mass on the nasal dorsum...
2016: International Journal of Surgery Case Reports
Christakis Constantinides, Kathy Murphy
To-this-date, the exact molecular, cellular, and integrative physiological mechanisms of anesthesia remain largely unknown. Published evidence indicates that anesthetic effects are multifocal and occur in a time-dependent and coordinated manner, mediated via central, local, and peripheral pathways. Their effects can be modulated by a range of variables, and their elicited end-effect on the integrative physiological response is highly variable. This review summarizes the major cellular and molecular sites of anesthetic action with a focus on the paradigm of isoflurane (ISO) - the most commonly used anesthetic nowadays - and its use in prolonged in vivo rodent studies using imaging modalities, such as magnetic resonance imaging (MRI)...
2016: Frontiers in Cardiovascular Medicine
Joanes Grandjean, Damiano Azzinnari, Aline Seuwen, Hannes Sigrist, Erich Seifritz, Christopher R Pryce, Markus Rudin
Human depression, for which chronic psychosocial stress is a major risk factor, is characterized by consistent alterations in neurocircuitry. For example, there is increased functional connectivity (FC) within and between regions comprising the default mode network (DMN) including prefrontal cortex and cingulate cortex. Alterations in network FC are associated with specific aspects of psychopathology. In mice, chronic psychosocial stress (CPS) leads to depression-relevant behavior, including increased fear learning, learned helplessness, fatigue and decreased motivation for reward...
August 9, 2016: NeuroImage
Volker Musahl, Ata A Rahnemai-Azar, Joanna Costello, Justin W Arner, Freddie H Fu, Yuichi Hoshino, Nicola Lopomo, Kristian Samuelsson, James J Irrgang
BACKGROUND: The role of the anterolateral capsule (ALC) as a secondary restraint to quantitative rotatory laxity of patients with an anterior cruciate ligament (ACL) injury is currently debated. PURPOSE/HYPOTHESIS: The purpose was to determine the influence of concomitant ALC injuries as well as injuries to other soft tissue structures on rotatory knee laxity in patients with an ACL injury. It was hypothesized that a concomitant ALC injury would be associated with increased rotatory knee laxity as measured during a quantitative pivot-shift test...
August 9, 2016: American Journal of Sports Medicine
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