STUDY OF MORPHOLOGY OF THE ETHMOIDAL ROOF ON CT SCAN IN PATIENT WITH NASOSINUSAL SYNDROMES

2018 ◽  
Vol 8 (6) ◽  
pp. 123-129
Author(s):  
Dieu Tran Thi ◽  
Thanh Dang
Keyword(s):  
Ct Scan ◽  
Skull Base ◽  
Contralateral Side ◽  
Sinus Surgery ◽  
Adjacent Structures ◽  
Base Study ◽  
The Difference ◽  
The Right ◽  
Type 3

Background: The ethmoidal roof is the thinnest bone of the skull base. Study of morphology of the ethmoidal roof on sinus CT Scan to avoid damaging the ethmoidal roof during sinus surgery. Objective: Describe the shape of the ethmoidal roof and some adjacent structures on computed tomography. Survey the relation between the shape of the ethmoidal roof and some adjacent structures. Patients and methods: Including 177 patients with nasosinusal syndromes who examined and underwent sinus CT scan at Hue University of Medicine and Pharmacy. Result: The mean hight of the lateral lamella of the cribrifom plate is 4.27 ± 1.96 mm on the right and 4.64 ± 1.92mm on the left. Keros type 1 accounted for 41.5%, type 2 accounted for 47.2% and type 3 accounted for 11.3%. Keros classification on the left was significantly higher than that on the right side. The hight of the nasal cavity was lowest in the Keros type 1 group and highest in type 3 (p=0.001). For more than 2 mm asymmetry of the hight of the lateral lamella of the cribrifom plate, the Keros 3 group showed a statistical more common when compared to the other groups (X2=15.62, p=0.004). The hight of the lateral lamella of the cribrifom plate at the ipsilateral side (deviated side) was higher than that of the contralateral side, but the difference is not statistically significant. Conclusion: Understanding potential asymmetries and variations of the skull base contour may assist the surgeons in avoiding complications in sinus surgery. Key words: The ethmoid roof, sinus surgery

CLINICAL TRIALS IN INFANTS OF ORALLY ADMINISTERED ATTENUATED POLIOMYELITIS VIRUSES

PEDIATRICS ◽  
1959 ◽  
Vol 23 (6) ◽  
pp. 1041-1062
Author(s):  
Stanley Alan Plotkin ◽  
Hilary Koprowski ◽  
Joseph Stokes
Keyword(s):  
Clinical Trials ◽  
Fecal Excretion ◽  
Jackson Type ◽  
Poliomyelitis Virus ◽  
Minor Illness ◽  
The Difference ◽  
Antibody Levels ◽  
Type 3

Forty-six infants, ranging from less than 1 day to 6 months of age, were given more than 100 feedings of living, attenuated poliomyelitis viruses without the occurrence of major or minor illness. The strains used were CHAT (type 1), Wistar (type 1), Jackson (type 2), P-712 (type 2) and Fox (type 3). All strains except the Jackson strain were found to be antigenic on oral administration. Response to vaccination was demonstrated in these infants by the presence after vaccination of antibody levels significantly in excess of those attributable to transplacentally acquired antibodies, and by the detection of fecal excretion of poliomyelitis virus. Infants less than 2 months old were more difficult to immunize than older infants. The evidence suggests that biologic immaturity rather than transplacental antibodies caused the difference. When the three types of poliomyelitis virus were fed at 3-week intervals, responses occurred to all types. No interference between types was observed when they were fed in all possible sequences. Three infants given a second feeding of homotypic, attenuated poliomyelitis virus 3 to 5 months after a successful vaccination showed resistance to intestinal reinfection.

Don't sue the surgeon: remineralisation of the skull base or a defect that never existed?

2011 ◽  
Vol 125 (12) ◽  
pp. 1294-1297
Author(s):  
C Hopkins ◽  
S Dhillon ◽  
G Rogers ◽  
D Roberts
Keyword(s):  
Computed Tomography ◽  
Skull Base ◽  
Endoscopic Sinus Surgery ◽  
Semicircular Canals ◽  
Time Frame ◽  
Sinus Surgery ◽  
Operative Exploration ◽  
Intracranial Complications ◽  
Operative Findings ◽  
The Right

AbstractIntroduction:Intracranial complications are recognised as rare, but serious, sequelae of endoscopic sinus surgery.Case report:A 56-year-old woman was referred after developing meningitis following elective functional endoscopic sinus surgery. Computed tomography demonstrated a significant defect of the skull base in the right posterior ethmoid, clearly visible on both coronal and sagittal sections. Operative exploration demonstrated the skull base to be intact in the posterior ethmoid area identified on the scan, and the overlying mucosa appeared undisturbed. Scans were reviewed in the light of operative findings; coronal and sagittal images were found to be reconstructions. Directly acquired coronal computed tomography, undertaken three weeks after surgery, demonstrated a complete bony plate in the right posterior ethmoid at the site previously identified as dehiscent.Discussion and conclusion:We speculate that the posterior ethmoid defect was actually an artefact of reconstruction. We cannot exclude the alternative possibility of remineralisation, but given the time frame this seems unlikely. This case highlights the need for caution when interpreting reconstructed images of the thin bony plates of the skull base and lamina papyracea, as regards both clinical significance and medicolegal reporting. While virtual defects have been reported in the superior semicircular canals as a result of reconstructed images, we believe this to be the first reported case demonstrating a similar problem in the anterior skull base.

scholarly journals Management of an Unusual Intranasal Foreign Body Abutting the Cribriform Plate: A Case Report and Review of Literature

2019 ◽  
Vol 12 ◽  
pp. 117955061985860
Author(s):  
Mingyang L Gray ◽  
Catharine Kappauf ◽  
Satish Govindaraj
Keyword(s):  
Foreign Body ◽  
Skull Base ◽  
Foreign Bodies ◽  
Cribriform Plate ◽  
Sinus Surgery ◽  
Csf Leak ◽  
Intracranial Involvement ◽  
History Of ◽  
Initial Imaging ◽  
The Right

A 35-year-old man with history of schizophrenia presented 3 weeks after placing a screw in his right nostril. Initial imaging showed a screw in the right ethmoid sinus with the tip penetrating the right cribriform plate. On exam, the patient was hemodynamically stable with purulent drainage in the right nasal cavity but no visible foreign body. While most nasal foreign bodies occur in children and are generally removed at the bedside, intranasal foreign bodies in adults tend to require further assessment. The foreign body in this case was concerning for skull base involvement and the patient was brought to the operating room (OR) with neurosurgery for endoscopic sinus surgery (ESS) and removal of foreign body. The screw was removed and the patient recovered with no signs of cerebrospinal fluid (CSF) leak postoperatively. Any concern for skull base or intracranial involvement should call for a full evaluation of the mechanism of injury and intervention in a controlled environment.

scholarly journals Morphologic Characteristics of the Medial Malleolar Fragment based on CT Scan in Ankle Fractures

2020 ◽  
Vol 5 (4) ◽  
pp. 2473011420S0029
Author(s):  
Jun-Beom Kim ◽  
Chung-Han An
Keyword(s):  
Ct Scan ◽  
External Rotation ◽  
Ankle Fractures ◽  
Fixation Method ◽  
P Value ◽  
Fixation Methods ◽  
Morphologic Characteristics ◽  
Type 3

Category: Ankle; Trauma Introduction/Purpose: The aim of this study was to describe and evaluate the morphologic characteristics of the medial malleolar fragment in ankle fractures and suggest the guideline for proper fixation of the fragment Methods: From August 2011 to June 2018, 172 cases were enrolled. There were performed the operation in ankle fractures with a medial malleolar fragment. All cases were divided into three types, based on the transverse fracture line of the medial malleolar by the CT (computed tomography) scan; type 1 was involved in the anterior colliculus, type 2 was the intercollicular groove and type 3 was the posterior colliculus. All cases were classified by Lauge-Hansen classification and compared with the groups statistically. The fixation methods by the groups were reviewed and compared. All cases were analyzed by SPSS 19.0, the p-value was less than 0.05. Results: According to the CT scan, type 1 was 14 cases (8.1%), type 2 was 48 cases (27.9%) and type 3 was 110 cases (63.9%). Based on the Lauge-Hansen classification, SER (supination-external rotation) type was 136 cases(76.4%), PER (pronation-external rotation) was 30 cases(17.4%) and PA(pronation abduction) was 8 cases(4.7%).In SER type, type 1 was 6 cases(4.4%), 2 was 42 cases(30.9%) and 3 was 86 cases(63.2%). In PER type, 1 was 6 cases (20%), 2 was 4 cases (13.3%) and 3 was 20 cases (18.9%). In PA type, 1 was 2 cases (25%), 2 was2 cases (25%) and 3 was 4 cases (50%). The fixation methods were various, such as a tension band wiring, 4.0 cannulated screw, hook plate. Conclusion: The morphology of a medial malleolar fragment based on CT scan in ankle fractures were 3 types. There was common a morphology involved the posterior colliculus, Type 3. We suggest that the operators should choose the proper fixation method by the morphology of the fragment and should be careful to avoid the injury of the posterior tibialis tendon.

scholarly journals Novel CineECG Derived From Standard 12-Lead ECG Enables Right Ventricle Outflow Tract Localization of Electrical Substrate in Patients With Brugada Syndrome

2020 ◽  
Vol 13 (9) ◽  
Author(s):  
Peter M. van Dam ◽  
Emanuela T. Locati ◽  
Giuseppe Ciconte ◽  
Valeria Borrelli ◽  
Francesca Heilbron ◽  
...  
Keyword(s):  
Right Ventricle ◽  
Brugada Syndrome ◽  
Predictive Value ◽  
Normal Subjects ◽  
Outflow Tract ◽  
Arrhythmogenic Substrate ◽  
The Right ◽  
Type 3 ◽  
Electrocardiogram Ecg

Background: In Brugada syndrome (BrS), diagnosed in presence of a spontaneous or ajmaline-induced type-1 pattern, ventricular arrhythmias originate from the right ventricle outflow tract (RVOT). We developed a novel CineECG method, obtained by inverse electrocardiogram (ECG) from standard 12-lead ECG, to localize the electrical activity pathway in patients with BrS. Methods: The CineECG enabled the temporospatial localization of the ECG waveforms, deriving the mean temporospatial isochrone from standard 12-lead ECG. The study sample included (1) 15 patients with spontaneous type-1 Brugada pattern, and (2) 18 patients with ajmaline-induced BrS (at baseline and after ajmaline), in whom epicardial potential duration maps were available; (3) 17 type-3 BrS pattern patients not showing type-1 BrS pattern after ajmaline (ajmaline-negative); (4) 47 normal subjects; (5) 18 patients with right bundle branch block (RBBB). According to CineECG algorithm, each ECG was classified as Normal, Brugada, RBBB, or Undetermined. Results: In patients with spontaneous or ajmaline-induced BrS, CineECG localized the terminal mean temporospatial isochrone forces in the RVOT, congruent with the arrhythmogenic substrate location detected by epicardial potential duration maps. The RVOT location was never observed in normal, RBBB, or ajmaline-negative patients. In most patients with ajmaline-induced BrS (78%), the RVOT location was already evident at baseline. The CineECG classified all normal subjects and ajmaline-negative patients at baseline as Normal or Undetermined, all patients with RBBB as RBBB, whereas all patients with spontaneous and ajmaline-induced BrS as Brugada. Compared with standard 12-lead ECG, CineECG at baseline had a 100% positive predictive value and 81% negative predictive value in predicting ajmaline test results. Conclusions: In patients with spontaneous and ajmaline-induced BrS, the CineECG localized the late QRS activity in the RVOT, a phenomenon never observed in normal, RBBB, or ajmaline-negative patients. The possibility to identify the RVOT as the location of the arrhythmogenic substrate by the noninvasive CineECG, based on the standard 12-lead ECG, opens new prospective for diagnosing patients with BrS.

scholarly journals OPTIMALISASI LETAK NOZZLE VENTURI MIXER PADA GENSET BERBAHAN BAKAR BIOGAS

2013 ◽  
Vol 1 ◽  
pp. 45
Author(s):  
Muhrom Khudhori
Keyword(s):  
Cross Section ◽  
Performance Test ◽  
The Other ◽  
Airflow Velocity ◽  
Machine Type ◽  
The Right ◽  
Type 3 ◽  
Venturi Nozzle ◽  
Optimal Type

Carburetor modification to the venturi mixer to put a hole in the center of the venturi (end of hole venturi type nozzle on the outlet end venturi section) can turn the engine generator using biogas fuel. Airflow velocity carburetor venturi section will begin upon entering the venturi section and will be maximal at the time in the middle of the venturi section. So of course the location of the placement of venturi carburetor venturi mixer on the right cross section will be obtained velocity airflow + optimum biogas. It is necessary for optimizing the placement location of the modification of the carburetor venturi mixer, air flow + in order to obtain optimum biogas which will have implications for the performance of the generator engine. In this research, manufacture three prototypes nozzle venturi mixer that will be placed at different places in the venturi duct, then the performance test was done to determine the type and location of the venturi nozzle prototype mixer is optimal. From the results of this study that : 1) Prototype nozzle venturi mixer with the tip of the nozzle in the middle (shape elbow) has the most complicated construction than the second type (type 1 and 2) the other. Manufacturing and assembly to form the elbow (type 3) is also more complicated and more difficult , this is because the space available / remaining biogas is limited to hole channel, and 2) Using a prototype generator machine type 3 is more stable when compared with other types, despite the decline, but not very significant in comparison with the other 2 types, so the prototype mixer venturi nozzle is the most optimal type 3 (square shape).

Anterior Ethmoidal Artery: A Computed Tomography Analysis and New Classifications

2020 ◽  
Author(s):  
Mohammad Waheed El-Anwar ◽  
Alaa Omar Khazbak ◽  
Diaa Bakry Eldib ◽  
Hesham Youssef Algazzar
Keyword(s):  
Computed Tomography ◽  
Skull Base ◽  
Frontal Sinus ◽  
Ethmoidal Artery ◽  
Anterior Ethmoidal Artery ◽  
The Mean ◽  
Type 3 ◽  
Sinus Ostium

Abstract Objective to determine the anterior ethmoidal artery (AEA) anatomy and variations by computed tomography (CT) in adult and their relations to and presents new AEA classifications. Methods One hundred and fifty paranasal CT scans (300 sides) were included. Axial images were acquired with multiplanar reformates to obtain delicate details in coronal and sagittal planes. Results One hundred and forty-four AEAs canal (48%), 293 AEAs foramen (97.7%), and 229 AEAs sulcus could be detected (76.3%). The mean AEA intranasal length was 6.7 ± 1.27 mm (range: 4.24–10.6 mm). The mean angle between AEA and lamina papyracea was 105.49 ± 9.28 degrees (range: 76.41–129.76 degrees). Of them, 95.8% AEAs had an angle with lamina >90 degrees, while 4.2% had angle <90 degrees. The mean angle between AEA and lateral lamella of cribriform plate was 103.95 ± 13.08 degrees (range: 65.57–141.36 degrees). Of them, 87.5% AEAs had an angle >90 degrees and 12.5% had an angle <90 degrees. The mean distance between AEA and skull base was 1.37 ± 1.98 mm (range: 0–8.35 mm). The AEA types in relation to skull base was type 1 (0–2 mm from skull base; 64.6%), type 2 (2–4 mm; 22.2%), type 3 (4–6 mm; 11.1%), and type 4 (>6 mm; 2.1%). The mean distance between the AEA and frontal sinus ostium was 9.17 ± 4.72 mm (range: 0–25.36 mm). AEA classification according to distance from AEA to frontal sinus ostium was 17.4% type 1 (<5 mm), 41.7% type 2 (5–10 mm), 31.9% type 3 (10–15 mm), and 9% type 4 (>15 mm). Conclusion Provided AEA details improve surgeons' awareness of AEA variations in the endoscopic field and can help residents in training.

scholarly journals Anatomical and Radiological Study of Jugular Foramen

2019 ◽  
Vol 08 (03) ◽  
pp. 121-125
Author(s):  
Ajay Kumar ◽  
Alok Tripathi ◽  
Shobhit Raizaday ◽  
Shilpi Jain ◽  
Satyam Khare ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Ct Scan ◽  
Skull Base ◽  
Jugular Foramen ◽  
Ct Scans ◽  
Transverse Diameter ◽  
Radiological Study ◽  
Significant Difference ◽  
Human Skulls ◽  
The Right

Abstract Background and Aim The purpose of present study was to obtain comprehensive data of morphometric and anatomical details of jugular foramen. Materials and Methods The study was performed on 30 dry adult human skulls along with computed tomography (CT) scans from 30 adult patients. The parameters observed were dimensions, shape, margins, confluence, septations, and distance from jugular foramen to mastoid base. Result In the dry skull observations, only anteroposterior diameter (APD) was significantly different between the right and left side, while for the CT scan observations both transverse diameter and APD exhibit significant difference. Conclusion We believe that data from the present study will help radiologists and neurosurgeons for diagnosis and treatment of skull base pathology around jugular foramen.

Analisis Kapasitas Galangan Kapal Ikan Untuk Memenuhi Rencana Pengadaan Kapal Ikan Hibah

2019 ◽  
Vol 13 (1) ◽  
pp. 25-36
Author(s):  
Agus Lubis Fitriansyah ◽  
Heri Supomo
Keyword(s):  
Fishing Vessel ◽  
Fishing Vessels ◽  
Score Method ◽  
The Government ◽  
The Right ◽  
Type 3 ◽  
Selection Of

The government through the Ministry of Marine and Fisheries offers assistance of fishing vessel to achieve fisheries production targets. This procurement plan must be supported by the ability and selection of the right shipyard. Beacuse the information of the capability and capacity of fiber shipyards in Indonesia is unclear, so the realization of the procurement of fishing vessel in previous years did not met the planned targets. The purpose of this study was to analyze shipyard capacity to meet the planned procurement of KKP fishing vessels grant in 2019. First classification of fishing vessels is based on the size of each GT, which is 5 GT (type 1), 5-10 GT (type 2), and 20-30 GT (type 3). The second is the minimum shipyard criteria for building fishing boats. Third, an assessment of the shipyard is based on the criteria that have been made. Fourth, shipyard selection was carried out on each WPPN-RI using the load score method. The fifth calculates the number of ships that can be built by the shipyard. The results of the shipyard assessment found that 43% of shipyards have the ability to build type 1 vessels, around 38% of shipyards have the ability to build type 2 vessels, and around 19% of shipyards have the ability to build type 3 vessels. is 1625 units / period. Referring to shipyard capacity, it can be said that the entire shipyard is able to fulfill the plan to procure assistance for KKP fishing vessels in the 2019 budget year.

scholarly journals Variability of the Anterior Ethmoid Artery in Endoscopic Sinus Surgery

2020 ◽  
pp. 014556132095048
Author(s):  
Mohamed A. Taha ◽  
Christian A. Hall ◽  
Harry E. Zylicz ◽  
Margaret B. Westbrook ◽  
William T. Barham ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Skull Base ◽  
Statistical Significance ◽  
Sinus Surgery ◽  
Preoperative Imaging ◽  
Computed Tomography Scans ◽  
Ethmoidal Artery ◽  
Anterior Ethmoidal Artery ◽  
The Right ◽  
Anterior Ethmoid Artery

Introduction: The anterior ethmoidal artery (AEA) demonstrates anatomic variability relative to its descent from the anterior skull base. Our study’s objective was to assess for correlation of AEA descent and laterality, in addition to correlation of AEA descent and the presence of supraorbital ethmoid cells (SOEC) and concha bullosae (CB). Method: A retrospective study was performed at a tertiary rhinology center from January 2019 to January 2020. Noncontrast maxillofacial computed tomography scans were examined independently by 2 fellowship trained rhinologists. The vertical distance from both left and right AEAs to the ipsilateral skull base were compared and correlated with the presence of ipsilateral SOEC and CB. Results: Computed tomography scans from 50 subjects were included. Mean age was 50.68 years (40% females). The distance of AEA to the skull base was greater on the left when compared to the right (62% vs 48%) ( P < .05). The left AEA had an average descent of 2.84 mm versus 1.78 mm on the right ( P < .05). An SOEC was present in 56% of cases. Thirty-eight percent of subjects had both SOEC and AEA descent on the right, while 52% of subjects had both on the left. This reached a statistical significance on both sides ( P < .05). Concha bullosa was present in 35% of cases, with both AEA descent and CB present in 16% on the right, and 32% on the left. Conclusion: The AEA displays variability in vertical descent from the skull base, with greater variability on the left. These findings implore vigilance with evaluation of preoperative imaging and during sinus surgery, especially in the presence of SOEC and CB.

Sign in / Sign up

Export Citation Format

Share Document