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Rachel B Ger, Jinzhong Yang, Yao Ding, Megan C Jacobsen, Carlos E Cardenas, Clifton D Fuller, Rebecca M Howell, Heng Li, R Jason Stafford, Shouhao Zhou, Laurence E Court
PURPOSE: Magnetic resonance imaging (MRI) provides non-invasive evaluation of patient's anatomy without using ionizing radiation. Due to this and the high soft-tissue contrast, MRI use has increased and has potential for use in longitudinal studies where changes in patients' anatomy or tumors at different time points are compared. Deformable image registration can be useful for these studies. Here we describe two data sets that can be used to evaluate the registration accuracy of systems for MR images, as it cannot be assumed to be the same as that measured on CT images...
July 14, 2018: Medical Physics
Ishita Wanikar, Surekha Rathod, Abhay P Kolte
BACKGROUND: The treatment of molar furcation involvement is unpredictable due to the complex anatomy and poor access for instrumentation. Previous studies have reported successful regeneration with endogenous regenerative material such as platelet rich fibrin (PRF) and bisphosphonates as alendronate (ALN). Hence, the present study was aimed to evaluate clinically and radiographically the efficacy of 1% ALN gel in combination with PRF (PRF+ALN) and PRF alone in the treatment of grade II furcation defects...
July 14, 2018: Journal of Periodontology
Benish Fida, Fabrizio Cutolo, Gregorio di Franco, Mauro Ferrari, Vincenzo Ferrari
Augmented reality (AR) has been successfully providing surgeons an extensive visual information of surgical anatomy to assist them throughout the procedure. AR allows surgeons to view surgical field through the superimposed 3D virtual model of anatomical details. However, open surgery presents new challenges. This study provides a comprehensive overview of the available literature regarding the use of AR in open surgery, both in clinical and simulated settings. In this way, we aim to analyze the current trends and solutions to help developers and end/users discuss and understand benefits and shortcomings of these systems in open surgery...
July 13, 2018: Updates in Surgery
Aravindhan Veerapandiyan, Ria Pal, Stephen D'Ambrosio, Iris Young, Katy Eichinger, Erin Collins, Per-Lennart Westesson, Jennifer Kwon, Emma Ciafaloni
OBJECTIVE: To report our experience delivering intrathecal nusinersen through cervical puncture in patients with spinal muscular atrophy (SMA) with no lumbar access. BACKGROUND: SMA is a neuromuscular disorder characterized by profound muscle weakness, atrophy, and paralysis due to degeneration of the anterior horn cells. Nusinersen, the first Food and Drug Administration-approved treatment for SMA, is administered intrathecally via lumbar puncture; however, many patients with SMA have scoliosis or solid spinal fusion with hardware that makes lumbar access impossible...
July 13, 2018: Neurology
Marvin Man Ting Chung, Jason Pui Yin Cheung
Psoas hematoma is a rare yet potentially serious complication following posterior spinal surgery as it is a possible nidus for infection. We present a case of psoas hematoma formation following scoliosis surgery due to intraoperative violation of the intertransverse plane. A 13-year-old female patient with adolescent idiopathic scoliosis underwent a posterior deformity correction and instrumented fusion which was complicated with intraoperative inadvertent violation of the intertransverse plane during dissection of the posterolateral gutter leading to a unilateral psoas hematoma...
July 10, 2018: Acta Orthopaedica et Traumatologica Turcica
Raphael Jakubovic, Joel Ramjist, Shaurya Gupta, Daipayan Guha, Arjun Sahgal, F Stuart Foster, Victor X D Yang
High frequency micro-ultrasound (µUS) transducers with central frequencies up to 50 MHz facilitate dynamic visualization of patient anatomy with minimal disruption of the surgical work flow. Micro-ultrasound improves spatial resolution over conventional ultrasound imaging from millimeter to micrometer, but compromises depth penetration. This trade-off is sufficient during an open surgery in which the bone is removed and the ultrasound probe can be placed into the surgical cavity. By fusing µUS with pre-operative imaging and tracking the ultrasound probe intra-operatively using our optical topographic imaging technology, we can provide dynamic feedback during surgery, thus affecting clinical decision making...
July 10, 2018: Ultrasound in Medicine & Biology
Kyung-Chul Moon, Seung-Kyu Han
Rhinoplasty for Asian noses is markedly different from that for white noses. As rhinoplasty becomes increasingly popular among Asian people, it is important that the rhinoplasty surgeons master relevant anatomy and become skilled in required techniques to serve this segment of population. In this article, distinct characteristics of Asian noses are briefly described. Noses in the Asia population exhibit broad phenotypic variations. There is no typical Asian nose. Therefore, the terms of Asian noses in this article are confined to noses of people from East Asian (eg, Korea, Japan, and China)...
August 2018: Facial Plastic Surgery Clinics of North America
M Skowerski, I Wozniak-Skowerska, A Hoffmann, S Nowak, T Skowerski, M Sosnowski, A M Wnuk-Wojnar, K Mizia-Stec
BACKGROUND: It has been suggested that changes in pulmonary veins (PV) and left atrium (LA) anatomy may have an influence on initiating atrial fibrillation (AF) and the effectiveness of pulmonary vein isolation (PVI) in patients (pts) with atrial fibrillation. The aim of the study was to assess anatomy abnormalities of the PV and LA in the patients with the history of AF and compare it with the control group(CG). METHODS: The multi-slice tomography (MSCT) scans were performed in 224 AF pts...
July 13, 2018: BMC Cardiovascular Disorders
Erik G Lee, Priyam Rastogi, Ravi L Hadimani, David C Jiles, Joan A Camprodon
OBJECTIVE: To investigate inter-subject variability with respect to cerebrospinal fluid thickness and brain-scalp distance, and to investigate intra-subject variability with different coil orientations. METHODS: Simulations of the induced electric field (E-Field) using a figure-8 coil over the vertex were conducted on 50 unique head models and varying orientations on 25 models. Metrics exploring stimulation intensity, spread, and localization were used to describe inter-subject variability and effects of non-brain anatomy...
July 6, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
Mengyun Yao, Yuman Li, Shima Ibrahim Ali, Mingxing Xie, Qing Lv
This case series describes echocardiographic and computed tomography angiographic (CTA) characteristics, clinical features, diagnosis, and treatment in 15 patients of Pulmonary artery sling (PAS). Echocardiography is effective in diagnosing PAS, when the main pulmonary artery extends to the right pulmonary artery directly with the left pulmonary artery arising from the right pulmonary artery. CTA, clearly demonstrating the position and extent of trachea compression, the anatomy of PAS and the spatial relationships among the PAS, trachea and the esophagus, is necessary for the final diagnosis...
July 13, 2018: Echocardiography
Alan King Lun Liu, Ernest Junwei Lim, Idil Ahmed, Raymond Chuen-Chung Chang, Ronald K B Pearce, Steve M Gentleman
Although the nucleus of the vertical limb of the diagonal band of Broca (nvlDBB) is the second largest cholinergic nucleus in the basal forebrain, after the nucleus basalis of Meynert (nbM), it has not generally been a focus for studies of neurodegenerative disorders. However, the nvlDBB does have an important projection to the hippocampus and discrete lesions of the rostral basal forebrain have been shown to disrupt retrieval memory function, a major deficit seen in patients with Lewy body disorders. One reason for its neglect is that the anatomical boundaries of the nvlDBB are ill defined and this area of the brain is not part of routine diagnostic sampling protocols...
July 13, 2018: Neuropathology and Applied Neurobiology
Claire Haegelen, Clément Baumgarten, Jean-François Houvenaghel, Yulong Zhao, Julie Péron, Sophie Drapier, Pierre Jannin, Xavier Morandi
Anatomical atlases have been developed to improve the targeting of basal ganglia in deep brain stimulation. However, the sole anatomy cannot predict the functional outcome of this surgery. Deep brain stimulation is often a compromise between several functional outcomes: motor, fluency and neuropsychological outcomes in particular. In this study, we have developed anatomo-clinical atlases for the targeting of subthalamic and medial globus pallidus deep brain stimulation. The activated electrode coordinates of 42 patients implanted in the subthalamic nucleus and 29 patients in the medial globus pallidus were studied...
2018: PloS One
Michael J Barrington, Yoshiaki Uda
PURPOSE OF REVIEW: Ultrasound guidance has become the accepted standard of practice for peripheral regional anesthesia. Despite evidence supporting the efficacy of ultrasound-guided regional anesthesia, its impact on patient safety has been less clear. RECENT FINDINGS: Evidence has been consistent that ultrasound guidance reduces the incidence of vascular injury, local anesthetic systemic toxicity, pneumothorax and phrenic nerve block. Within the limited global scope of the epidemiology and etiologic complexity of perioperative (including block-related) peripheral nerve injury, there has not been consistent evidence that ultrasound guidance is associated with a reduced incidence of nerve injury...
July 12, 2018: Current Opinion in Anaesthesiology
Niraj Nirmal Pandey, Arun Sharma, Priya Jagia
Abnormal embryological development of the pulmonary veins can manifest as either partial or total anomalous drainage into the systemic venous circulation. Echocardiography does not provide adequate information in all cases as the optimal visualization of anomalous structures is limited by the availability of acoustic window; also it is highly operator dependent. However, multidetector computed tomography (MDCT) angiography, with its multiplanar reformatting & volume rendering techniques, offers precise information about the 3D anatomy and spatial relationships of the cardiovascular structures...
July 13, 2018: British Journal of Radiology
Karl Olah
No abstract text is available yet for this article.
August 2018: BJOG: An International Journal of Obstetrics and Gynaecology
Huy Q Truong, Edinson Najera, Robert Zanabria-Ortiz, Emrah Celtikci, Xicai Sun, Hamid Borghei-Razavi, Paul A Gardner, Juan C Fernandez-Miranda
OBJECTIVE The endoscopic endonasal approach has become a routine corridor to the suprasellar region. The superior hypophyseal arteries (SHAs) are intimately related to lesions in the suprasellar space, such as craniopharyngiomas and meningiomas. Here the authors investigate the surgical anatomy and variations of the SHA from the endoscopic endonasal perspective. METHODS Thirty anatomical specimens with vascular injection were used for endoscopic endonasal dissection. The number of SHAs and their origin, course, branching, anastomoses, and areas of supply were collected and analyzed...
July 13, 2018: Journal of Neurosurgery
Bhumija Gupta, Aneesha Acharya, Shilpa Singh, Stefania Brazzoli, Mohamed Ghorab, Shaima Malik, Georgios Pelekos, Paul Emile Rossouw
OBJECTIVES: To assess the influence of Selective Serotonin Reuptake Inhibitor (SSRI) use on jawbone and bone mineral density (BMD) by retrospective analysis of panoramic radiographs. METHODS: Radiographic and clinical records were sourced from the Division of Orthodontics and TMJD, Eastman Institute for Oral Health, University of Rochester. Randomly selected adults (20-65 years) were categorized into: 'Active' (with history of SSRI use of >6 months) and a 'Control' group...
July 13, 2018: Dento Maxillo Facial Radiology
Linda Wright, Sarah M Puchalski, Mads Kristoffersen, Casper Lindegaard
OBJECTIVE: To develop arthroscopic approaches to the atlanto-occipital (A-O) and describe associated arthroscopic anatomy. STUDY DESIGN: Experimental ex vivo study and clinical case report. ANIMALS: Ten equine cadaver joints and 1 clinical case. METHODS: CT arthrograms of 8 A-O joints were performed to determine the placement of an arthroscopic portal. Arthroscopy was performed via dorsal and/or ventral approaches (dorsal or ventral to the longissimus capitis tendon) in 10 cadaveric A-O joints and the A-O joint of a 2-week-old foal with septic arthritis...
July 13, 2018: Veterinary Surgery: VS
Jonathan Zagzag, Noah Avram Cohen, George Fielding, John Saunders, Prashant Sinha, Manish Parikh, Paresh Shah, Nicole Hindman, Christine Ren-Fielding
Perforated duodenal ulcer following RYGB is an unusual clinical situation that may be a diagnostic challenge. Only 23 cases have previously been reported. We present five cases. The hallmark of visceral perforation, namely pneumoperitoneum, was not seen in three of the four cases that underwent cross sectional imaging. This is perhaps due to the altered anatomy of the RYGB that excludes air from the duodenum. Our cases had more free fluid than expected. The bariatric surgeon should not wait for free intraperitoneal air to suspect duodenal perforation after RYGB...
July 12, 2018: Obesity Surgery
Tary Yin, Marie Jardine, Anna Miles, Jacqui Allen
PURPOSE: Structural and functional pharyngeal changes occur with age. How these affect swallowing in healthy older adults is not well defined. This study presents quantitative pharyngeal anatomic features in healthy adults using videofluoroscopic study of swallowing (VFSS). This will help our understanding of the normal changes in swallowing that occur with age and illustrate what may constitute normal variation compared with abnormal swallow function. METHODS: 138 mixed gender adults with no history of dysphagia were recruited and underwent a standardized VFSS protocol...
July 12, 2018: European Archives of Oto-rhino-laryngology
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