scholarly journals Computed Tomography Analysis of the Anterosuperior Portion of the Bulla Lamella in Chinese Subjects and Its Surgical Significance in Endoscopic Frontal Sinusotomy

ORL ◽  
2021 ◽  
pp. 1-7
Author(s):  
Muhan Shi ◽  
Yuxiao Wu ◽  
Yuguang Wang ◽  
Min Wang ◽  
Fei Yuan ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Statistical Analysis ◽  
Chronic Rhinosinusitis ◽  
Frontal Sinus ◽  
Surgical Skills ◽  
Ct Scans ◽  
Frontal Sinusitis ◽  
The Relationship ◽  
Chinese Subjects ◽  
Tomography Analysis

<b><i>Introduction:</i></b> The anterosuperior portion of the bulla lamella can extend into the frontal sinus and form the supra bulla frontal cell (SBFC) and supraorbital ethmoid cell (SOEC). This can affect the frontal drainage pathway and make surgery more challenging. <b><i>Objectives:</i></b> The aim of the study was to compare the anatomical characteristics of SBFC and SOEC in Chinese chronic rhinosinusitis (CRS) patients and explore the relationship between the cells and frontal sinusitis (FS). The surgical skills in dealing with these cells were also studied. <b><i>Methods:</i></b> We prospectively identified SBFC and SOEC in 114 patients with CRS by computed tomography (CT). The sides of the patients were divided into groups A (with FS) and B (without FS). CT scans were analyzed to distinguish the SBFC, SOEC, and the drainage pathway. Statistical analysis was conducted to determine whether the cells were associated with the occurrence of FS. <b><i>Results:</i></b> The prevalence of frontal cells was as follows: SBFC: 9.65%, SOEC: 21.93%. There was an association between the presence of SBFC and FS (<i>p</i> &#x3c; 0.05). The anterior drainage pathway was present in patients with SBFC and SOEC, anterolateral pathway in those with SBFC/SOEC coexisting with the frontal septal cell, and anteromedial pathway in those with SBFC/SOEC coexisting with the supra agger frontal cell. <b><i>Conclusions:</i></b> There was an association between the presence of SBFC and the occurrence of FS. Extension of the anterosuperior portion of the bulla lamella into the frontal sinus obstructed the drainage pathway posteriorly. Understanding the anatomy may help surgeons thoroughly dissect the bulla lamella.

scholarly journals The Relationship Between the Width of the Frontal Recess and the Frontal Recess Cells in Japanese Patients

2019 ◽  
Vol 12 ◽  
pp. 117955061988494
Author(s):  
Seiichiro Makihara ◽  
Shin Kariya ◽  
Mitsuhiro Okano ◽  
Tomoyuki Naito ◽  
Kensuke Uraguchi ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Frontal Sinus ◽  
Significant Positive Correlation ◽  
Japanese Patients ◽  
Cell Types ◽  
Sinus Surgery ◽  
Ct Scans ◽  
Frontal Sinusitis ◽  
Frontal Recess ◽  
The Relationship

Objective: The agger nasi cell (ANC) is an easily identifiable landmark when approaching the frontal sinus. The success of endoscopic frontal sinus surgery may be influenced by the width of the frontal recess (FR). The aim of this study is to examine the relationship between the FR width and the ANC size in Japanese patients. In addition, the effect of various frontal recess cells (FRCs) on the development of frontal sinusitis has been examined. Materials and methods: Multiplanar computed tomography (CT) scans of the nasal cavities and paranasal sinuses in 95 patients (190 sides) before endoscopic sinus surgery were reviewed. The presence of FRCs, the thickness of the frontal beak (FB), the ANC size, and the anterior-to-posterior (A-P) length of the frontal isthmus (FI) and FR were evaluated in patients with and without frontal sinusitis. Results: The prevalence of the ANC, frontal cell types 1, 2, 3, and 4, frontal bullar cell (FBC), suprabullar cell, supraorbital ethmoid cell, and interfrontal sinus septal cell was 85.3%, 11.6%, 0%, 7.9%, 0%, 25.3%, 45.8%, 16.8%, and 15.3%, respectively. The ANC volume showed a significant positive correlation with the A-P length of the FI and FR. The incidence of frontal sinusitis in the patients with FBCs was significantly higher than that without FBCs. Conclusion: A large ANC offers a greater potential to facilitating the approach to the frontal sinus because of the extensiveness of the FR in Japanese patients. The presence of FBCs may be related to a higher incidence of frontal sinusitis.

Radiological Correlation between Pneumatization of Frontal Sinus and Height of Fovea Ethmoidalis

2007 ◽  
Vol 21 (5) ◽  
pp. 626-628 ◽  
Author(s):  
Cesur Gumus ◽  
Altan Yildirim
Keyword(s):  
Computed Tomography ◽  
Ct Scan ◽  
Skull Base ◽  
Frontal Sinus ◽  
Ct Scans ◽  
The Relationship

Background We need more data about the variations of skull base to minimize the complications of ethmoidectomy. The aim of this study was to analyze the relationship between the pneumatization of the frontal sinus and height of the fovea ethmoidalis. Methods Paranasal coronal computed tomography (CT) scans of 487 sides of 300 patients were evaluated. The presence of the frontal cell and pneumatization of the frontal sinus were studied with respect to the height of the fovea ethmoidalis. Results We found a statistically significant correlation between the frontal cell and frontal sinus hyperpneumatization (p = 0.000). We determined that there was a deeper fovea ethmoidalis in the sides that have a frontal cell (p ≤ 0.001) and in the sides that have hyperpneumatization of the frontal sinus (p = 0.000). We also observed flatter fovea ethmoidalis in the sides that have hypopneumatization of the frontal sinus (p ≤ 0.001). Conclusion The presence of a frontal cell or hyperpneumatization of the frontal sinus on CT scan should alert the clinician that there may be a deep fovea ethmoidalis.

The Intersinus Septal Cell: Anatomic, Radiologic, and Clinical Correlation

1996 ◽  
Vol 10 (5) ◽  
pp. 299-302 ◽  
Author(s):  
Robert M. Merritt ◽  
John P. Bent ◽  
Frederick A. Kuhn
Keyword(s):  
Computed Tomography ◽  
Frontal Sinus ◽  
Sinus Surgery ◽  
Ct Scans ◽  
Detailed Knowledge ◽  
Type I ◽  
Type Ii ◽  
Frontal Sinusitis ◽  
Clinical Correlation ◽  
Modern Era

Functional endoscopic frontal sinus surgery requires detailed knowledge of intranasal anatomy. Occasionally frontal sinusitis involves the intersinus septal cell (ISSC), which has not been described in the modern era of nasal endoscopy and computed tomography (CT). To study the ISSC, we reviewed 300 CT scans: 200 clinical and 100 cadaveric. We found ISSC in 70 (35%) of clinical scans, with six subjects having multiple ISSC. The cadaveric prevalence was slightly less at 31%. We further classified the ISSC according to the following criteria: type I, enclosed completely within the thin intersinus septum or bridging its entire inferior-superior extent; type II, bordered partially by this thin septum and partially by the thick septal base formed by the nasofrontal bone; type III, enclosed completely within the nasofrontal bone, often extending between frontal recesses rather than the actual sinuses. This report supplements our radiologic ISSC analysis with our experiences in five clinical cases.

scholarly journals Olfactory Cleft Computed Tomography Analysis and Olfaction in Chronic Rhinosinusitis

2016 ◽  
Vol 30 (6) ◽  
pp. 402-406 ◽  
Author(s):  
Preeti Kohli ◽  
Rodney J. Schlosser ◽  
Kristina Storck ◽  
Zachary M. Soler
Keyword(s):  
Computed Tomography ◽  
Chronic Rhinosinusitis ◽  
Olfactory Cleft ◽  
Tomography Analysis

Computed tomography study of pineal calcification in schizophrenia

1999 ◽  
Vol 14 (3) ◽  
pp. 163-166 ◽  
Author(s):  
G Bersani ◽  
A Garavini ◽  
I Taddei ◽  
G Tanfani ◽  
M Nordio ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Pineal Gland ◽  
Potential Role ◽  
Ct Scans ◽  
Entire Group ◽  
Positive Symptoms ◽  
Healthy Controls ◽  
Mean Size ◽  
The Relationship

SummaryComputed tomography studies concerning pineal calcification (PC) in schizophrenia have been conducted mainly by one author who correlated this calcification with several aspects of the illness. On the basis of these findings the aim of the present study was to analyze size and incidence of pineal gland calcification by CT in schizophrenics and healthy controls, and to verify the relationship between pineal calcification and age, and the possible correlation with psychopathologic variables. Pineal calcification was measured on CT scans of 87 schizophrenics and 46 controls divided into seven age subgroups of five years each. No significant differences in PC incidence and mean size between patients and controls were observed as far as the entire group was considered. PC size correlated with age both in schizophrenics and controls. We found a higher incidence of PC in schizophrenics in the age subgroup of 21–25 years, and a negative correlation with positive symptoms of schizophrenia in the overall group. These findings could suggest a premature calcific process in schizophrenics and a probable association with `non-paranoid' aspects of the illness. Nevertheless the potential role of this process possibly related to some aspects of the altered neurodevelopment in schizophrenia is still unclear.

scholarly journals Study of Asssociation of Concha Bullosa with Rhinosinusitis

2016 ◽  
Vol 24 (3) ◽  
pp. 111-116
Author(s):  
Shrikrishna B H ◽  
Jyothi A C
Keyword(s):  
Chronic Rhinosinusitis ◽  
Ct Scans ◽  
Radiological Assessment ◽  
Concha Bullosa ◽  
Cross Sectional ◽  
Relationship Of ◽  
The Relationship ◽  
Strength Of Association ◽  
Larger Sample

Introduction There are several studies with contradictory findings about the role of concha bullosa with predisposition to rhinosinusitis. This study was conducted to assess the relationship of osteomeatal unit blockage with concha bullosa. Materials and method A cross-sectional observational study by radiological assessment of prevalence of chronic rhinosinusitis and blockage of ipsilateral osteomeatal unit was done on 100 cases of concha bullosa detected on computed tomography to determine the prevalence of chronic rhinosinusitis in subjects with concha bullosa and to examine the latter’s relationship to osteomeatal unit blockage, which is a precursor for rhinosinusitis. Result One hundred cases of concha bullosa were studied in a total of 87 CT scan films depicting concha bullosa. Some CT scans showed unilateral concha bullosa while few scans showed bilateral concha bullosa. Ipsilateral rhinosinusitis was found in only 31% of the sides in scans of subjects with concha bullosa. Of the total 100 concha bullosae studied, extensive type was the commonest followed by bulbous and lamellar variety. Discussion Although rhinosinusitis was more predominant in the extensive type of concha bullosa compared to other types, it was statistically not significant and there was no statistically significant association between any type of concha bullosa with ipsilateral rhinosinusitis either in right side or left side. Conclusion This study has found no statistically significant association between any type of concha bullosa with rhinosinusitis. A bigger study with larger sample size is required to better assess the strength of association between concha bullosa and rhinosinusitis.

Dorsal Preservation Rhinoplasty: Core Beam Computed Tomography Analysis of the Nasal Vault, Septum, and Skull Base—Its Role in Surgical Planning

2020 ◽  
Vol 36 (03) ◽  
pp. 329-334
Author(s):  
Amir Sadri ◽  
Charles East ◽  
Lydia Badia ◽  
Yves Saban
Keyword(s):  
Computed Tomography ◽  
Skull Base ◽  
Frontal Sinus ◽  
Surgical Planning ◽  
Cribriform Plate ◽  
Nasal Vault ◽  
Tomography Analysis

AbstractDorsal preservation rhinoplasty in cases of a convex or overprojected noses has significant advantages over resection and reconstruction of the dorsum. Analysis of the subdorsal septum in relation to the radix osteotomy to achieve a drop or hinge of the natural dorsum is important in avoiding possible complications involving the skull base, frontal sinus, and subsequent radix position. In the majority of patients, simple cut release of the perpendicular plate rather than resection superiorly may be necessary where the quadrangular cartilage junction with the perpendicular plate is caudal to the radix osteotomy. Computed tomography is helpful in delineating this position as well as providing information on the frontal sinus and position of the cribriform plate prerhinoplasty.

scholarly journals Sagittal discrepancies of the jaw in a Bangladeshi cohort: three-dimensional computed tomography analysis

2019 ◽  
Vol 47 (8) ◽  
pp. 3613-3622
Author(s):  
Mushrath Islam ◽  
Ayman Hameed Uraibi ◽  
Arkan Al Azzawi ◽  
Mohammad Khursheed Alam ◽  
Asilah Yusof
Keyword(s):  
Computed Tomography ◽  
3D Imaging ◽  
Three Dimensional ◽  
Ct Scans ◽  
Radiology Department ◽  
Men And Women ◽  
Essential Step ◽  
Beta Angle ◽  
Spss Software ◽  
Tomography Analysis

Objectives In orthodontic diagnosis and treatment planning, the assessment of skeletal jaw relationships is an essential step. This study aimed to evaluate skeletal jaw relationships in a Bangladeshi cohort by using traditional (ANB angle and Wits appraisal) and newly described (Beta angle, W angle, and Yen angle) sagittal measurements in three-dimensional (3D) computed tomography (CT). Methods The radiology department conducted CT scans of Bangladeshi patients. Mimics 3D imaging software (Materialise) was used to process the CT images and evaluate 3D sagittal measurements. SPSS software (IBM) was used to assess significant differences in the data at a confidence level of 5%. Independent-samples t-tests were used to evaluate sexual dimorphism for the measured values. Results In total, 85 men and 32 women were included in this study. All measurements were equivalent to the existing standards. There were no significant differences in the acquired values between men and women. Measurements were consistent with Class I normal classification. Conclusions This study established 3D CT standards for ANB, Wits appraisal, Beta angle, W angle, and Yen angle in Bangladeshi patients.

CT scan evaluation of the distance between maxillary sinus floor and maxillary teeth apices

2021 ◽  
Vol 11 (41) ◽  
pp. 18-23
Author(s):  
Daniel Lupoi ◽  
Mihai Dragomir ◽  
Gabriela Coada ◽  
Alexandra Sanda ◽  
Vlad Budu
Keyword(s):  
Computed Tomography ◽  
Image Analysis ◽  
Maxillary Sinus ◽  
Maxillary Sinusitis ◽  
Correct Diagnosis ◽  
Ct Scans ◽  
Maxillary Sinus Floor ◽  
Sinus Floor ◽  
The Right ◽  
The Relationship

AbstractBACKGROUND. The relationship between the maxillary sinus floor and the roots of the teeth in the upper arch is essential, especially in the correct diagnosis and treatment of odontogenic maxillary sinusitis. The aim of this study was to determine exactly this distance and to observe the most common teeth situated closely to the maxillary sinus.MATERIAL AND METHODS. The study was performed in 2020, in the ENT Department of “Sfanta Maria” Hospital, and was made based on computed tomography (CT) scans of the sinuses from the clinic’s archive. The image analysis was performed with a radiologic software. For each tooth, from both right and left upper hemiarcade, the distance between the dental root and the bony floor of the maxillary sinus was measured and the average distances were compared.RESULTS. Among the present teeth analysed, those with the closest distance were the 1st M (95.15% on the right side and 96.23% on the left side), then the second molars (96.08% on the right side and 90% on the left side). The 2nd and 3rd PM had a similar percentage of the sinusal approach, which varied between 82% and 86%.CONCLUSION. Knowing these dento-sinusal relationships, there is a win-win situation for both the ENT doctor and the dentist. The paraclinical examination necessary for the analysis of the dento-alveolo-sinusal relation and of the afferent pathology is the imaging one, of choice being the CT and CBCT scans.

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