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https://www.readbyqxmd.com/read/28934821/feasibility-of-a-complete-pancreatobiliary-linear-endoscopic-ultrasound-examination-from-the-stomach
#1
Vinay Dhir, Douglas G Adler, Nonthalee Pausawasdi, Amit Maydeo, Khek Yu Ho
Background and study aims Linear endoscopic ultrasound (EUS) evaluation of the pancreaticobiliary system usually requires scanning from both the stomach and the duodenum. The feasibility of assessing the complete pancreaticobiliary system from the stomach alone has not been studied. We aimed to conceptualize a system-based approach (the railroad approach) for linear pancreaticobiliary EUS (PB-EUS) and evaluate whether the pancreaticobiliary anatomy could be assessed from the stomach alone. Patients and methods Three maneuvers were conceptualized and evaluated (the alpha maneuver in the stomach, and sigma and xi maneuvers in the duodenum)...
September 21, 2017: Endoscopy
https://www.readbyqxmd.com/read/28934808/competency-based-teaching-in-radiology-implementation-and-evaluation-of-interactive-workstation-based-learning-to-apply-nklm-based-content
#2
Wolfgang Koestner, Wiebke Otten, Till Kaireit, Frank K Wacker, Sabine Dettmer
Purpose New teaching formats are required to implement competency-based teaching in radiology teaching. Therefore, we have established and evaluated two practical competency-based radiological courses. Materials and Methods The courses were held in a multimedia room with 25 computers and a professional DICOM viewer. Students were taught basic image analysis and presented clinical cases with a DICOM viewer under supervision of an instructor using desktop monitoring software. Two courses (elective course and obligatory course) were evaluated by the students (n = 160 and n = 100) and instructors (n = 9) using an anonymized online survey...
September 21, 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/28934795/comparisons-of-lesion-volumes-and-shapes-produced-by-a-radiofrequency-system-with-a-cooled-a-protruding-or-a-monopolar-probe
#3
David L Cedeno, Alejandro Vallejo, Courtney A Kelley, Dana M Tilley, Nitesh Kumar
BACKGROUND: Radiofrequency (RF) ablation for denervation has been utilized for decades in chronic pain management. This relies on the proper targeting of the affected nerve which may be obtained by creating an ablation lesion with a shape and volume that optimizes targeting. Various systems designed to improve lesion size are available. These include cooling the active tip (cooled-RF) and protruding the RF electrode outside the active tip (PERF). OBJECTIVES: This study compares lesion volumes of 3 commercially available RF systems: cooled-RF, "V" shaped active cannula and protruding electrode (18 g and 20 g), and monopolar RF (MRF; 16 g, 18 g, and 20 g)...
September 2017: Pain Physician
https://www.readbyqxmd.com/read/28934238/a-tool-to-automatically-analyze-electromagnetic-tracking-data-from-high-dose-rate-brachytherapy-of-breast-cancer-patients
#4
Th I Götz, G Lahmer, V Strnad, Ch Bert, B Hensel, A M Tomé, E W Lang
During High Dose Rate Brachytherapy (HDR-BT) the spatial position of the radiation source inside catheters implanted into a female breast is determined via electromagnetic tracking (EMT). Dwell positions and dwell times of the radiation source are established, relative to the patient's anatomy, from an initial X-ray-CT-image. During the irradiation treatment, catheter displacements can occur due to patient movements. The current study develops an automatic analysis tool of EMT data sets recorded with a solenoid sensor to assure concordance of the source movement with the treatment plan...
2017: PloS One
https://www.readbyqxmd.com/read/28933808/pediatric-orthopedic-injuries-evidence-based-management-in-the-emergency-department-digest
#5
Jamie Lien, Kathryn H Pade
Upper and lower extremity injuries are common in children, with an overall risk of fracture estimated at just under 1 in 5 children. Pediatric bone anatomy and physiology produce age specific injury patterns and conditions that are unique to children, which can make accurate diagnosis difficult for emergency clinicians. This issue reviews the etiology and pathophysiology of child-specific fractures, as well as common injuries of the upper and lower extremities. Evidence-based recommendations for management of pediatric fractures, including appropriate diagnostic studies and treatment, are also discussed...
September 22, 2017: Pediatric Emergency Medicine Practice
https://www.readbyqxmd.com/read/28933804/concurrent-lumbosacral-and-sacrococcygeal-fusion-a-rare-etiology-of-low-back-pain-and-coccygodynia
#6
Stylianos Kapetanakis, Grigorios Gkasdaris, Pavlos Pavlidis, Panagiotis Givissis
BACKGROUND: Sacrum is a triangular bone placed in the base of the spine and formed by the synostosis of five sacral vertebrae (S1-S5). Its upper part is connected with the inferior surface of the body of L5 vertebra forming the lumbosacral joint, while its lower part is connected with the base of the coccyx forming the sacrococcygeal symphysis, an amphiarthrodial joint. The existence of four pairs of sacral foramen in both anterior and posterior surface of the sacrum is the most common anatomy...
September 21, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/28933331/-comparison-of-the-arthroscopic-finding-in-the-knee-joint-and-the-mri-retrospective-study
#7
K Šimeček, P Látal, J Duda, M Šimeček
PURPOSE OF THE STUDY Our retrospective study presents the comparison of the preoperative magnetic resonance imaging of the knee joint - MRI - and the arthroscopic finding - ASC. Its aim is to find out how a positive or a negative finding of MRI corresponds with the operative finding and how much the experience of radiologist contributes to the conformity. MATERIAL AND METHODS The MRI findings of knee joints treated surgically at two departments in 2013 and 2014 were assessed. The MRI was performed in a total of 470 patients who subsequently underwent an arthroscopic surgery...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28932983/prevention-and-management-of-vascular-complications-in-middle-ear-and-cochlear-implant-surgery
#8
Filippo Di Lella, Maurizio Falcioni, Silvia Piccinini, Ilaria Iaccarino, Andrea Bacciu, Enrico Pasanisi, Davide Cerasti, Vincenzo Vincenti
The objective of this study is to illustrate prevention strategies and management of vascular complications from the jugular bulb (JB) and internal carotid artery (ICA) during middle ear surgery or cochlear implantation. The study design is retrospective case series. The setting is tertiary referral university hospital. Patients were included if presented pre- or intraoperative evidence of high-risk anatomical anomalies of ICA or JB during middle ear or cochlear implant surgery, intraoperative vascular injury, or revision surgery after the previous iatrogenic vascular lesions...
September 20, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28932701/mr-imaging-of-the-traumatic-triangular-fibrocartilaginous-complex-tear
#9
REVIEW
Alex W H Ng, James F Griffith, Cindy S Y Fung, Ryan K L Lee, Cina S L Tong, Clara W Y Wong, Wing Lim Tse, Pak Cheong Ho
Triangular fibrocartilage complex is a major stabilizer of the distal radioulnar joint (DRUJ). However, triangular fibrocartilage complex (TFCC) tear is difficult to be diagnosed on MRI for its intrinsic small and thin structure with complex anatomy. The purpose of this article is to review the anatomy of TFCC, state of art MRI imaging technique, normal appearance and features of tear on MRI according to the Palmar's classification. Atypical tear and limitations of MRI in diagnosis of TFCC tear are also discussed...
August 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28932488/medial-elbow-pain
#10
REVIEW
Raul Barco, Samuel A Antuña
Medial elbow pain is uncommon when compared with lateral elbow pain.Medial epicondylitis is an uncommon diagnosis and can be confused with other sources of pain.Overhead throwers and workers lifting heavy objects are at increased risk of medial elbow pain.Differential diagnosis includes ulnar nerve disorders, cervical radiculopathy, injured ulnar collateral ligament, altered distal triceps anatomy or joint disorders.Children with medial elbow pain have to be assessed for 'Little League elbow' and fractures of the medial epicondyle following a traumatic event...
August 2017: EFORT open reviews
https://www.readbyqxmd.com/read/28932342/complex-coronary-hemodynamics-simple-analog-modelling-as-an-educational-tool
#11
Gaurav R Parikh, Elvis Peter, Nikolaos Kakouros
OBJECTIVE: Invasive coronary angiography remains the cornerstone for evaluation of coronary stenoses despite there being a poor correlation between luminal loss assessment by coronary luminography and myocardial ischemia. This is especially true for coronary lesions deemed moderate by visual assessment. Coronary pressure-derived fractional flow reserve (FFR) has emerged as the gold standard for the evaluation of hemodynamic significance of coronary artery stenosis, which is cost effective and leads to improved patient outcomes...
2017: Open Medical Informatics Journal
https://www.readbyqxmd.com/read/28931352/relationship-between-pelvic-incidence-angle-and-blood-concentration-of-chromium-and-cobalt-ions-after-metal-on-metal-hip-replacement-a-brief-report
#12
K Pernaa, M Saltychev, K Mäkelä
BACKGROUND AND AIMS: The wear of metal-on-metal hip implants may increase chromium or cobalt ion blood level. This phenomenon may depend among other things on the particularity of spinopelvic anatomy. The effect of pelvic incidence angle on the wear of metal-on-metal hip implants is not known. The objective of the study was to investigate whether such effect does exist. MATERIAL AND METHODS: The pelvic incidence and inclination of acetabular component angles of 89 patients after unilateral metal-on-metal hip replacement were compared with blood level of chromium and cobalt ions using Pearson correlation coefficient...
September 1, 2017: Scandinavian Journal of Surgery: SJS
https://www.readbyqxmd.com/read/28931343/impact-of-bowel-gas-and-body-outline-variations-on-total-accumulated-dose-with-intensity-modulated-proton-therapy-in-locally-advanced-cervical-cancer-patients
#13
Thomas Berger, Jørgen Breede Baltzer Petersen, Jacob Christian Lindegaard, Lars Ulrik Fokdal, Kari Tanderup
INTRODUCTION: Density changes occurring during fractionated radiotherapy in the pelvic region may degrade proton dose distributions. The aim of the study was to quantify the dosimetric impact of gas cavities and body outline variations. MATERIAL AND METHODS: Seven patients with locally advanced cervical cancer (LACC) were analyzed through a total of 175 daily cone beam computed tomography (CBCT) scans. Four-beams intensity-modulated proton therapy (IMPT) dose plans were generated targeting the internal target volume (ITV) composed of: primary tumor, elective and pathological nodes...
September 21, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28931265/diagnostic-and-interventional-optical-angioscopy-in-ex-vivo-carotid-arteries
#14
Luis E Savastano, Neeraj Chaudhary, Carlos Murga-Zamalloa, Michael Wang, Thomas Wang, B Gregory Thompson
BACKGROUND: Angioscopy - or endovascular endoscopy - is a catheter-based technique employing a flexible fiberoptic angioscope to directly visualize arterial lumen. Poor resolution and excessive stiffness of pre-existent angioscopes limited their use clinically. Recent advances resulted in novel fused optical fiber bundle angioscopes with improved flexibility and imaging resolution. Use of these devices in endovascular neurosurgery is still largely unexplored. OBJECTIVE: To evaluate image quality and feasibility of optical angioscopes for diagnostic and interventional neuro-angioscopy in carotid arteries of human cadavers...
February 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28931258/simulation-based-education-for-endoscopic-third-ventriculostomy-a-comparison-between-virtual-and-physical-training-models
#15
Gerben E Breimer, Faizal A Haji, Vivek Bodani, Melissa S Cunningham, Adriana-Lucia Lopez-Rios, Allan Okrainec, James M Drake
BACKGROUND: The relative educational benefits of virtual reality (VR) and physical simulation models for endoscopic third ventriculostomy (ETV) have not been evaluated "head to head." OBJECTIVE: To compare and identify the relative utility of a physical and VR ETV simulation model for use in neurosurgical training. METHODS: Twenty-three neurosurgical residents and 3 fellows performed an ETV on both a physical and VR simulation model. Trainees rated the models using 5-point Likert scales evaluating the domains of anatomy, instrument handling, procedural content, and the overall fidelity of the simulation...
February 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28931257/morphometric-analysis-of-the-middle-clinoid-process-using-maxillofacial-computed-tomography-scans
#16
Christopher Miller, Roukoz Chamoun, David Beahm
BACKGROUND: The interest in detailed anatomy of the sella and parasellar regions has resurged recently due to the wide clinical applications of the expanded endoscopic approaches to the skull base. The middle clinoid process (MCP) is a bony structure that can affect wide endoscopic exposure of the sella and parasellar region. OBJECTIVE: To study and analyze the anatomic variations of the MCP in the general population using computed tomography scans. METHODS: A total of 150 maxillofacial computed tomography scans were reviewed to characterize the MCP...
February 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28931254/cavernomas-and-arteriovenous-malformations-in-the-mesial-temporal-region-microsurgical-anatomy-and-approaches
#17
Alvaro Campero, Pablo Ajler, Carlos Rica, Albert Rhoton
BACKGROUND: The mesial temporal region (MTR) is located deep in the temporal lobe and it is surrounded by important vascular and nervous structures that should be preserved during surgery. OBJECTIVE: To describe microsurgical anatomy and approaches to the MTR in relation to cavernomas and arteriovenous malformations (AVMs). METHODS: Five formalin-fixed and red silicone-embedded heads of adult cadavers were used for this study. Between January 2003 and June 2014, 7 patients with cavernomas and 6 patients with AVMs in the MTR underwent surgery...
February 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28931253/relationship-of-the-optic-nerve-to-the-medial-rectus-muscle-during-endonasal-dissection-of-the-medial-intraconal-orbital-apex
#18
Dmitriy Petrov, John Craig, Jayesh Thawani, Kalil Abdullah, James N Palmer, Nithin D Adappa, John Y K Lee
BACKGROUND: Few studies have established surgical landmarks for endoscopic endonasal dissection of the intraconal orbital apex (OA). OBJECTIVE: We describe the optic nerve (ON) anatomy and its relationships, as seen during a fully endoscopic, endonasal approach to the medial intraconal OA. METHODS: The study question was approached through a cadaver dissection and a radiographic study. Four formalin-fixed, latex-injected cadaver heads were dissected using transnasal endoscopic techniques...
February 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28930991/using-an-adapted-microfluidic-olfactory-chip-for-the-imaging-of-neuronal-activity-in-response-to-pheromones-in-male-c-elegans-head-neurons
#19
Douglas K Reilly, Daniel E Lawler, Dirk R Albrecht, Jagan Srinivasan
The use of calcium indicators has greatly enhanced our understanding of neural dynamics and regulation. The nematode Caenorhabditis elegans, with its completely mapped nervous system and transparent anatomy, presents an ideal model for understanding real-time neural dynamics using calcium indicators. In combination with microfluidic technologies and experimental designs, calcium-imaging studies using these indicators are performed in both free-moving and trapped animals. However, most previous studies utilizing trapping devices, such as the olfactory chip described in Chronis et al...
September 7, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28930845/pure-laparoscopic-donor-right-hepatectomy-in-a-living-donor-with-type-3a-biliary-variation-a-case-report
#20
Young Seok Han, Heontak Ha, Hyung Jun Kwon, Jae Min Chun
RATIONALE: With refinements in the operative technique, laparoscopic surgery has become the standard practice for liver resection. In the field of living donor liver transplantation, a few centers adopted laparoscopic surgery as an alternative to conventional open donor hepatectomy, and the application of pure laparoscopic donor right hepatectomy has been limited to the donors with simple, favorable biliary anatomy. PATIENT CONCERNS: The candidate donor was a 19-year-old woman with type 3a bile duct variation...
September 2017: Medicine (Baltimore)
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