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Extraoral Ligature of Lingual Artery: Anatomic and Topographic Study
Lins,Carla Cabral dos Santos Accioly; Cavalcanti,Jennecy Sales; do Nascimento,Daniela Lira;
International Journal of Morphology , 2005, DOI: 10.4067/S0717-95022005000300014
Abstract: the lingual artery constitutes one of the branches of the external carotid artery, which is responsible for the vascularization of the tongue and neighbour regions. the hemorrhage caused by a lesion of the lingual artery can occur during a dental procedure (surgical accidents by the use of an instrument or rotating disc), by trauma, biopsy and dental implant. in some cases is difficult to stop the hemorrhage of injured vase, so is necessary to realize the extraoral ligature of this artery. hence, this work studied the anatomic aspects of the lingual artery, by forty-eight dissections of twenty-four corpses settled in formol 10%, aiming to detail the origin, pathway and anatomic relations of the lingual artery in the region of anterior trigone of the neck, and also to measure the distances among the lingual artery and the arteries: facial, superior thyroid and with the bifurcation of the common carotid. the results concluded that the lingual artery is found in a position more inferior than classicaly described, based on the digastric muscle and the hypoglossal nerve; and that the hyoid bone can be used as a point of reference for the surgical access to the lingual artery in the region of the anterior trigone of the neck
Cardiac Conduction System: Delineation of Anatomic Landmarks With Multidetector CT  [cached]
Farhood Saremi,Maria Torrone,Nooshin Yashar
Indian Pacing and Electrophysiology Journal , 2009,
Abstract: Major components of the cardiac conduction system including the sinoatrial node (SAN), atrioventricular node (AVN), the His Bundle, and the right and left bundle branches are too small to be directly visualized by multidetector CT (MDCT) given the limited spatial resolution of current scanners. However, the related anatomic landmarks and variants of this system a well as the areas with special interest to electrophysiologists can be reliably demonstrated by MDCT. Some of these structures and landmarks include the right SAN artery, right atrial cavotricuspid isthmus, Koch triangle, AVN artery, interatrial muscle bundles, and pulmonary veins. In addition, MDCT has an imperative role in demarcating potential arrhythmogenic structures. The aim of this review will be to assess the extent at which MDCT can outline the described anatomic landmarks and therefore provide crucial information used in clinical practice.
Extraoral Ligature of Lingual Artery: Anatomic and Topographic Study Ligadura Extraoral de la Arteria Lingual: Estudio Anatómico y Topográfico  [cached]
Carla Cabral dos Santos Accioly Lins,Jennecy Sales Cavalcanti,Daniela Lira do Nascimento
International Journal of Morphology , 2005,
Abstract: The lingual artery constitutes one of the branches of the external carotid artery, which is responsible for the vascularization of the tongue and neighbour regions. The hemorrhage caused by a lesion of the lingual artery can occur during a dental procedure (surgical accidents by the use of an instrument or rotating disc), by trauma, biopsy and dental implant. In some cases is difficult to stop the hemorrhage of injured vase, so is necessary to realize the extraoral ligature of this artery. Hence, this work studied the anatomic aspects of the lingual artery, by forty-eight dissections of twenty-four corpses settled in formol 10%, aiming to detail the origin, pathway and anatomic relations of the lingual artery in the region of anterior trigone of the neck, and also to measure the distances among the lingual artery and the arteries: facial, superior thyroid and with the bifurcation of the common carotid. The results concluded that the lingual artery is found in a position more inferior than classicaly described, based on the digastric muscle and the hypoglossal nerve; and that the hyoid bone can be used as a point of reference for the surgical access to the lingual artery in the region of the anterior trigone of the neck La arteria lingual es un ramo de la arteria carótida externa, responsable de la vascularización de la lengua y regiones vecinas. La hemorragia proveniente de una lesión de la arteria lingual puede ocurrir durante el procedimento dental (accidentes operatorios por un instrumento quirúrgico o disco rotatorio), por trauma, biopsia y por colocación de implante dentario. Como en algunos casos, se vuelve difícil contener la hemorragia donde el vaso fue lesionado, se hace necesario realizar la ligadura extra-oral de esta arteria. Por lo anterior, en este trabajo fueron estudiados los aspectos anatómicos de la arteria lingual, en 48 disecciones de cadáveres humanos fijados en formol 10%, con el objetivo de detallar el origen, trayecto y relaciones anatómicas de esta arteria en la región del trígono anterior del cuello, como también medir las distancias entre la arteria lingual y las arterias: facial, tireoidea superior y con la bifurcación de la arteria carótida común. Los resultados permitieron concluir que la arteria lingual se encuentra, generalmente, más inferior de lo clásicamente descrito, tomándose como base el músculo digástrico y el nervio hipogloso; y que el hueso hioide puede ser usado como punto de referencia para el acceso quirúrgico a la arteria lingual, en la región del trígono anterior del cuello
An investigation on the facial midline distance to some anatomic landmarks of the jaws among people with natural dentition
Mosharraf R,Abtahi D. Porrabani M
Journal of Dental Medicine , 2004,
Abstract: The determination of the dental midline is necessary in most dental procedures."nOne of the methods to fulfill this goal is to determine the facial midline based on the midpoints of the"nforehead, nose, upper lip and chin. However, for various reasons, this method has not always been"nproved successful. In such cases, different techniques, based on the investigations in the edentulous"npatients, have been suggested."nPurpose: The aim of this study was to investigate the conformity of some landmarks such as labial"nfrenum, incisive papilla and mid palatal suture with dental and facial midlines among people with natural"ndentition in order to obtain accurate anatomic landmarks for denture replacement."nMaterials and Methods: In this descriptive study, 96 dental students, having all their permanent teeth"nand without any orthognathic problem, were chosen. For each subject, Alginate impressions and dental"ncasts were prepared. Then, centric occlusion was recorded with a biting wax and the facial mid line was"ndetermined on the anterior part of it. The distances from the facial midline to the upper teeth midline,"nincisive papilla, labial frenum and mid palatal suture were determined with a special tool and were"nmeasured by a VERNIEH two times. In order to analyze the results, Chi- Square and t-student tests were"nused."nResults: The average of facial midline distance to the upper teeth midline, the labial frenum, the incisive"npapilla and the mid palatal suture were 0.83±0.60, 0.67±G.54, 0.83±00.63 and 0.81±0.62 mm,"nrespectively. There was no significant difference between males and females. Labial frenum showed the"nminimum distance to the facial midline, while the incisive papilla had the maximum. There was no"nsignificant difference between these anatomic landmarks, in conformity or unconformity with the facial"nmidline"nConclusion: Considering the low percentage of the subjects with complete conformity and the lack of"nsignificant differences between these three landmarks, it is suggested that there is no superiority among"nthese landmarks for the determination of facial midline. The similar distances from the facial midline to"nthe incisive papilla and upper teeth midline indicate that using incisive papilla to determine the upper"nteeth midline in edentulous patients lead to normal face.
Evaluating the Reliability of Anatomic Landmarks in Safe Lumbar Puncture Using Magnetic Resonance Imaging: Does Sex Matter?  [PDF]
Maryam Rahmani,Seyed Mehran Vaziri Bozorg,Ahmad Reza Ghasemi Esfe,Afsaneh Morteza,Omid Khalilzadeh,Elham Pedarzadeh,Madjid Shakiba
International Journal of Biomedical Imaging , 2011, DOI: 10.1155/2011/868632
Abstract: Aim. To determine the level of the conus medullaris-Tuffier's line, and conus medullaris-Tuffier's line distance using imaging and evaluate their relation to age and gender. Methods. We performed a cross-sectional study of 189 adult participants, who underwent MR imaging of lumbosacral spine. Each vertebra was divided into 3 equal segments (upper, middle, and lower), and intervertebral disc space was also assumed as one segment. All segments from T12 upper segment to L5S1 intervertebral disc were numbered consecutively. The position of conus medullaris and Tuffier's line was determined by the vertebral segment or intervertebral disc space at the same level. The patients were stratified into high/low conus medullaris position (cutpoint: L1 middle segment) and short/long conus-Tuffier's distance (cutpoint: 14 segments). Results. Women with low conus were significantly more than men, in patients older than 50 years old (72.7% in females versus 55.3% in males; ), whereas there was not such a sexual dimorphism in patients younger than 50 years old. Similarly, short conus-Tuffier's distance was more frequent among women than men in patients older than 50 years old (59.7% in females versus 39.5% in males; ), whereas there was not any gender difference in patients younger than 50 years old. Conus-Tuffier's distance was negatively correlated with age ( , ) in all studied population. Conclusion. Anatomical landmarks vary according to age and gender, with a lower end of conus medullaris in women, so clinicians should use more caution on the identification of the appropriate site for lumbar puncture, particularly in elderly women. 1. Introduction Conus medullaris is the cone-shaped terminal part of the spinal cord that is usually located between the 12th thoracic (T12) vertebra and the 3rd lumbar (L3) vertebra. Tuffier's line is a clinical landmark defined as a horizontal line connecting the superior aspect of the posterior iliac crests, used as a reference to localize 4th lumbar (L4) vertebra body before performing a lumbar puncture [1]. Previous studies showed that trained anesthesiologists fail to correctly identify the lumbar interspaces through physical exam [2]. Also, MR imaging evidences a variable conus medullaris and Tuffier’s line position according to age, gender, and race [3–5]. Misidentification of L4 using Tuffier’s line causes conus medullaris iatrogenic trauma during anesthesia and lumbar puncture procedures. Therefore, the correct position of these anatomic landmarks is important to execute this procedure safely [6]. Moreover, there are several
Enhancing Planning Heuristic with Landmarks  [cached]
Jingjing Zhao,Dayou Liu,Yongming Yang
Journal of Computers , 2011, DOI: 10.4304/jcp.6.12.2590-2595
Abstract: Recently, landmarks count heuristic can increase the number of problem instances solved and improve the quality of the solutions in satisfying non-optimal planning. In order to make the heuristic optimal, we give the solution to solve the overestimate of landmarks count heuristic. We extend landmarks count heuristic without action cost assignments, and prove that the extension of heuristic is admissible. Our empirical evaluation shows that the extension of heuristic is admissible and can be competed with the state-of-the-art of heuristic.
Landmarks in Urban Space as Signs  [PDF]
Havva Alkan Bala
Current Urban Studies (CUS) , 2016, DOI: 10.4236/cus.2016.44027
Abstract: A signal or a symbol has been sent with conscious. Urban space has signified elements like landmark. Landmarks as references signs orient the people. Landmarks are defined as an external point of reference that helps orienting in a familiar or an unfamiliar environment. This study is about to clear out the meaning of landmark for the city users who have perceived reference point with their memory and perception. In other words, this study is about discovering how the city affects the people who experience the urban space within semiotic of landmarks in Konya, Turkey. The method of this study is photo-elicitation to understand how people orient themselves in moving within urban space considering landmarks. Analysis of interview texts, there were six different type of landmarks as; city memory-historical, city landscape/ square, high rise/skyscraper, daily life/city usage, personal memory/personal perception, circulation pattern. In this study the semiology of communication studies codes established by society to produce messages consciously sent and received as signals, signs and symbols.
Visual landmarks systems for humanoid robots
A. Gorbenko,V. Popov
Applied Mathematical Sciences , 2013,
Abstract: In this paper, we consider a model of visual landmarks selection forhumanoid robots navigation. This model is based on a genetic programmingapproach.
Ordered Landmarks in Planning  [PDF]
J. Hoffmann,J. Porteous,L. Sebastia
Computer Science , 2011, DOI: 10.1613/jair.1492
Abstract: Many known planning tasks have inherent constraints concerning the best order in which to achieve the goals. A number of research efforts have been made to detect such constraints and to use them for guiding search, in the hope of speeding up the planning process. We go beyond the previous approaches by considering ordering constraints not only over the (top-level) goals, but also over the sub-goals that will necessarily arise during planning. Landmarks are facts that must be true at some point in every valid solution plan. We extend Koehler and Hoffmann's definition of reasonable orders between top level goals to the more general case of landmarks. We show how landmarks can be found, how their reasonable orders can be approximated, and how this information can be used to decompose a given planning task into several smaller sub-tasks. Our methodology is completely domain- and planner-independent. The implementation demonstrates that the approach can yield significant runtime performance improvements when used as a control loop around state-of-the-art sub-optimal planning systems, as exemplified by FF and LPG.
Combination of activator and extraoral forces: Case presentation and literature review.  [PDF]
Nikolaos Toutountzakis,Iosif Sifakakis
Hellenic Orthodontic Review , 2006,
Abstract: The aim of this paper is the presentation of the treatment of a patient, where a combination of an activator with high pull extraoral forces was applied, followed by fixed orthodontic appliances. In addition a review of the literature concerning this subject will be introduced. The patient presented skeletal Class II relations with a hyperdivergent facial type, a clockwise rotation of the mandible and Class II, division 1 dental relationships. He was treated in two phases. The first phase included the combined application of an activator and high pull extraoral forces, while during the second phase fixed appliances were placed, as well. The dental anomaly was corrected completely, while the skeletal relations, the relations of the lips and the facial profile were improved.
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