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 · 1 Comparing thinsection and thicksection CT of pericardial sinuses and recesses Furmlko Kodama, et al 2 Mediastinum – Lymph node map Radiology Assistant 3 The superior sinus of the pericardium CT appearance Dixie J Aronberg, MD 4 The anatomy of the pericardial space A study in cadavers and patient Yeon Hyeon Choe, et al 5Journal of Optoelectronics and Biomedical Materials Vol2 Issue 4, OctoberDecember 10, p 281 – 2 CT OF THE PARANASAL SINUSES NORMAL ANATOMY, · CT anatomy of the nasal cavity and paranasal sinuses is described in detail together with the anatomic variants encountered in each region Imaging techniques and protocol Preoperative CT imaging of the paranasal sinuses is performed after completion of the medical treatment because up to 80% of patients suffering from acute upper respiratory tract infection

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Sinuses anatomy ct-CT sinus Indication/Technique Sinus CT is frequently requested by ear, nose and throat (ENT) specialists The CT test is usually Normal anatomy Nose The nose is divided in two by the nasal septum and reaches up to the nasopharynx The nasal septum consists of Paranasal sinuses/08/19 · Computed tomography (CT) and magnetic resonance imaging (MRI) are the primary imaging modalities for assessment of the paranasal sinuses Both these imaging techniques are far superior to plain radiographs in the evaluation of the sinonasal cavities

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 · The following is designed to enable you to develop a basic understanding of sinus anatomy as well as CT scans, both normal and abnormal We will review several CT scans, but start with a drawing to start to orient you There are four sets of sinuses maxillary, ethmoid, frontal and sphenoid sinusesObjective The purpose of this study was to determine the incidence of sinonasal anatomic variants and to assess their relation to sinonasal mucosal disease Materials and methods A retrospective evaluation of 192 sinus CT examinations of patients with a clinical history of rhinosinusitis was conducted The CT scans were evaluated for the presence of several anatomic variants of theA sinus is a sac or cavity in any organ or tissue, or an abnormal cavity or passage caused by the destruction of tissueIn common usage, "sinus" usually refers to the paranasal sinuses, which are air cavities in the cranial bones, especially those near the nose and connecting to it Most individuals have four paired cavities located in the cranial bone or skull

 · CT anatomy of the paranasal sinuses 1 1 Paranasal Sinuses Radiological Anatomy Dr Hazem Abu Zeid Youset December 06 2 2 What are the sinuses? · 55 Occipital Lobe of Cerebrum Anatomy CT Axial Brain Form No 5 1 Parietal Bone 2 Parietal Lobe of Cerebrum 3 Superior Sagittal Sinus 4 Falx Cerebri 5 Body of Lateral Ventricle 6 Frontal Bone 7 Frontal Lobe of CerebrumNormal sinus CT (annotated) Case contributed by Dr Tabby A Kennedy Diagnosis not applicable Diagnosis not applicable From the case Normal sinus CT (annotated) CT Clean images from a normal sinus CT detailing relevant anatomy

This picture taken by my favourite sitehttps//radiopaediaorg/This article will review the anatomy of paranasal sinuses, Jami Karise the reader with the common terminology used in functional endoscopic sinus surgeryThe ct test is usually made to evaluate the anatomy of the paranasal sinuses The module interface is meant to mimic a radiology workstation with adjacent image scrolling via arrow keys and or mouse wheel button Straps and pillows may be used to help the patient maintain the correct position and to hold still during the exam

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 · MC Huguelet A sinus CT scan is performed to produce images of the sinuses A sinus CT scan is an imaging test that uses advanced xray technology to produce a detailed image of the sinuses, hollow passages of indeterminate function that are found within the skull Typically, the purpose of a sinus CT scan is to aid a doctor in diagnosing a medical condition involving the sinuses• Standard coronal CT is INADEQUATE to understand 3D sinus anatomy, particularly in the frontal recess • Axial thin section ("Normal CT Anatomy of the Paranasal Sinuses and Nasal cavity" lecture Case discussion (901 min webinar) WEEK 2 // CT Anatomy and normal variants of PNS Reporting on selected cases (67 hour learning time) 9am CET // Live webinar "Anatomy of the Ostiomeatal Complex" lecture Case discussion (901

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AJR194, June 10 W529 Multiplanar Sinus CT A C E Fig 1—34yearold woman with normal sinus anatomy A, Coronal CT image shows ostiomeatal complex, which consists of four structures hiatus semilunaris (oval), uncinate process (arrowhead), infundibulum (dotted line), ethmoidal bulla (EB), and maxillary ostium (asterisk)Max = maxillary sinus, IT = inferior turbinate, MT = middle · Overview of Paranasal Sinus Anatomy The paranasal sinuses consist of paired frontal, ethmoid, maxillary, and sphenoid sinuses The frontal sinuses are located superior to the orbits and ethmoid sinuses Both the superior and posterior walls of the frontal sinus separate the sinus from the cranial vault · Computed tomography () A CT scanner uses Xrays and a computer to create detailed images of the sinusesCT scanning can help diagnose chronic sinusitis Magnetic resonance imaging () Magnetic

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SIMPLIFIED PARANASAL ANATOMY #anatomy #pns #ctpns Also known as antrum of Highmore Largest paranasal sinusPyramidal in shape Base toward the lateral wall ofComputed Tomography (CT) scanning is the examination of choice in sinusitis, particularly in cases of chronic sinus disease, providing excellent detail of sinus anatomy The ostiomeatal units are brilliantly shown on CT scans, which provide greater definition of the pathology than do other images, especially within the sphenoid and ethmoid sinuses · CT has become a useful diagnostic modality in the evaluation of the paranasal sinuses and an integral part of surgical planning It is also used to create intraoperative road maps Today, CT is the radiologic examination of choice in evaluating the paranasal sinuses of a patient with sinusitis

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MRI examination Laurie Loevner and Jennifer Bradshaw Radiology department of the University of Pennsylvania, USA and the radiology department the Medical Centre Alkmaar, the Netherlands This article is based on a presentation given by Laurie Loevner and adapted for the Radiology Assistant by Jennifer Bradshaw This review focusses on the/05/13 · The paranasal sinuses are airfilled extensions of the nasal cavity There are four paired sinuses – named according to the bone in which they are located – maxillary, frontal, sphenoid and ethmoid Each sinus is lined by a ciliated pseudostratified epithelium, interspersed with mucussecreting goblet cellsThe sinuses are chambers in the bones of the face and skull that are normally lined with a thin mucosa

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 · Computer tomography (CT) scanning of the paranasal sinus is one of the major modalities of investigating paranasal sinus disease Therefore, familiarisation with the radiological anatomy of this region is vital in order to perform FESS · Computed tomography is considered the method of choice in delineating completely the normal anatomy and anatomical variants of the paranasal sinuses and it is extremely useful in the preoperative planning and in post operative followup in cases of endonasal interventionsComputed tomography (CT) scans may help examine paranasal sinuses' anatomy and detect abnormalities(10) Moreover, a CT scan gives a greater definition of the sinuses(11) It is more sensitive than typical radiography tools in detecting sinus pathology, especially within the sphenoid and ethmoid sinuses

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Numerous sinonasal anatomic variants exist and are frequently seen on sinus CT scans The most common ones are Agger nasi cells, infraorbital ethmoidal (Haller) cells, sphenoethmoidal (Onodi) cells, nasal septal deviation, and concha bullosa 1 – 10 The Agger nasi cells are the most anterior ethmoidal air cellsComputed tomography (CT) of the sinuses uses special xray equipment to evaluate the paranasal sinus cavities – hollow, airfilled spaces within the bones of the face surrounding the nasal cavity CT scanning is painless, noninvasive and accurate · Performing a smooth and clean sinus surgery goes hand in hand with a perfect understanding of the nasal and paranasal anatomy Within this chapter, the paranasal and related structures surgical anatomy will be extensively reviewed, with emphasis on the anatomical landmarks and the normal anatomical variations, which have a significant impact on the function,

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Welcome to Interactive CT Sinus Anatomy Imaging the paranasal sinuses is routine in clinical practice to evaluate for various sinus pathology, nonspecific facial pain, and preoperative planning for functional endoscopic sinus surgery (FESS), including postoperative followupInteractive CT Sinus Anatomy University of Washington Interactive Atlas Sagittal Home Axial Coronal Sagittal (scroll over skull to see CT images) · The sinus CT clearly shows an osteoma with a bony defect (arrow) indicating progressive growth This lesion requires surgical excision Note multiple paranasal osteomas are found in Gardner's syndrome, which also includes cutaneous and soft tissues tumors in addition to colonic polyps with a predilection to malignant degeneration

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 · Anatomy of the head on a cranial CT Scan brain, bones of cranium, sinuses of the face eAnatomy Anatomy of the head on a cranial CT · Computed tomography (CT) scanning is an extremely common imaging modality in modern medicineWith advancements in technology, it is rapidly replacing many diagnostic radiographic procedures In this article, we will outline the basic science behind CT scans, describe the principles of interpretation, and highlight their advantages and drawbacks compared to otherSinus Anatomy Sinuses also have their own anatomy and function Many of us are not aware of our sinuses most of the time – except when infection and other sinus disorders cause pain, pressure, sleep disorders, or impaired hearing, or breathing Definition of Nasal Sinuses Nasal sinuses are hollow, airfilled spaces, within the bones of the

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 · Sinuses CT brain (bone windows) The sphenoid sinus and ethmoid air cells are continuous with the nasal airways The mastoid air cells are continuous with the middle ear Frontal sinuses CT brain (bone windows)On this page are presented normal CT anatomy in two planes and a selection of pathological scans with commentary There are some things that you need to know before you start Key facts As with CT scans of the paranasal sinuses, abnormalities in the ear are common, especially the presence of fluid in the mastoid air cellsA CT scan is used when we are planning surgery as it gives a good view of the anatomy of the sinuses and shows the surgeon where important structures such as the lamina papyracea and cribriform plate are 4 Plain Xrays of the sinuses are no help in making a diagnosis in the majority of patients Introduction

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Ct sinuses anatomy They have several functions of which reducing the weight of the head is the most important The agger nasi cells are the most anterior ethmoidal air cells The most common ones are agger nasi cells infraorbital ethmoidal haller cells sphenoethmoidal onodi cells nasal septal deviation and concha bullosa 110CT Anatomy of the orbit Axial reconstruction 1, Foramen rotundem 2, Zygomatic bone 3, Maxillary bone 4, Nasal bone 5, Inferior orbital fissure 6, Sphenoidal sinus Computed tomography (CT) is the standard diagnostic test for evaluating crosssectional, two– or threedimensional images of the body(1) · 71  Whenever there is total opacification of the frontal, maxillary, or sphenoid sinuses, a complete axial and coronal CT examination should be performed  And also, if the patient has a suspected neoplasm, a complete axial and coronal examination need to be performed to provide the most detailed analysis of the sinonasal cavities and the adjacent skull base

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 · 6 Anatomy of the Frontal Recess and Frontal Sinus with ThreeDimensional Reconstruction In recent years endoscopic sinus surgery (ESS) has become accepted as the treatment of choice for chronic sinusitis that is resistant to medical management 1 As ESS has become more widely adopted so the understanding of the complex and varied anatomy of the sinusesDural venous sinuses are venous channels located intracranially between the two layers of the dura mater (endosteal layer and meningeal layer) They can be conceptualised as trapped epidural veins Unlike other veins in the body, they run alone, not parallel to arteries93 · The computed tomographic scans obtained in a series of 800 patients referred for evaluation for functional endoscopic sinus surgery were examined to determine the prevalence and significance of anatomic variants Fiftytwo normal variants were identified within two major groupings of primary bony abnormalities and sinus air cell extensions

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