scholarly journals The Correlation Between Preoperative Findings of High-Resolution Computed Tomography (HRCT) and Intraoperative Findings of Chronic Otitis Media (COM)

2019 ◽  
Vol 12 ◽  
pp. 117955061987047 ◽  
Author(s):  
Mariam Aljehani ◽  
Rayan Alhussini
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Ct Scan ◽  
Otitis Media ◽  
Predictive Value ◽  
Chronic Otitis Media ◽  
Diagnostic Value ◽  
P Value ◽  
High Resolution Computed Tomography ◽  
Preoperative Ct

Objectives: The aim of this study was to investigate the correlation between the preoperative findings of high-resolution computed tomography (HRCT) of temporal bone in chronic otitis media (COM) and the intraoperative findings. Methods: This retrospective study was conducted in the ORL-HNS Unit at Ohud Hospital, Medina, Saudi Arabia, during the period from January to September 2018. We included all patients with COM, and an informed consent was obtained from all participants. The HRCT images were studied in comparison with the intraoperative findings. The parameters of comparison were tympanic membrane, middle ear structures, and the status of cholesteatoma. Results: A total of 39 patients were included in the analysis: 14 male and 25 female patients. The age range was 9 to 50 years. As a result of the comparison between HRCT findings and intraoperative observations, we found that incus erosion through computed tomography (CT) was the same as during surgical observation in 12 cases (30.8%). Malleus appeared eroded on CT in 1 case (2.6%); however, 5 cases were seen with that observation during operation (12.8%). Cholesteatoma was similarly seen in the CT scan and during surgery with a significant relation between intraoperative cholesteatoma extending and HRCT findings of the disease (95% confidence level, P-value = 0.001). The sensitivity, specificity, positive predictive value, and negative predictive value were 100% for detecting sigmoid plate erosion, dura exposure, incus erosion, stapes erosion, and malleus-incus joint discontinuity through preoperative CT. Conclusions: Intraoperative findings and HRCT have shown better results with good correlation of diagnostic value regarding the comparisons between recorded observations, especially in detecting sigmoidal plate erosion, dural exposure, incus and stapes erosion, and malleus-incus joint discontinuity. Preoperative CT scan is beneficial and contributory in the decision of indicating surgery to patients.

scholarly journals Comparative evaluation of mastoid pneumatization pattern using X-ray mastoid and high-resolution computed tomography temporal bone in unilateral squamosal chronic otitis media

2020 ◽  
Vol 6 (8) ◽  
pp. 1469
Author(s):  
Akanksha Dhiman ◽  
Ankur Gupta ◽  
Nishi Sharma ◽  
Akhilandeswari Prasad
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Temporal Bone ◽  
Otitis Media ◽  
Chronic Otitis Media ◽  
Anatomical Variations ◽  
High Resolution Computed Tomography ◽  
Mastoid Pneumatization ◽  
X Ray ◽  
Hrct Temporal Bone

<p class="abstract"><strong>Background:</strong> Chronic otitis media (COM) affects 0.5-30% of individuals in any community and over 20 million people are estimated to suffer from this condition worldwide. COM often evolves in a continuum. Squamosal disease is more commonly found in poorly pneumatized bones, but whether the sclerosis is relevant to the etiology of the disease or is caused by it, has not been fully resolved. Our study aimed at comparing the mastoid pneumatization patterns obtained using X-ray mastoid and high-resolution computed tomography (HRCT) temporal bone. It was an interventional study.</p><p class="abstract"><strong>Methods:</strong> Sixty patients of unilateral squamosal COM, aged more than 8 years, underwent X-ray mastoid Schuller’s view and HRCT temporal bone, using Philips extended brilliance 48 slice CT.  </p><p class="abstract"><strong>Results:</strong> Upon analysis, in diseased and healthy ears, the coincidence of X-ray and HRCT findings was 63.33% and 80% respectively.</p><p class="abstract"><strong>Conclusions:</strong> HRCT temporal bone should be done in all cases of squamosal COM to know the extent of the disease, pneumatization patterns and the presence of anatomical variations.  </p>

scholarly journals Clinicoradiological correlation between preoperative high-resolution computed tomography findings and intraoperative findings in chronic otitis media (squamous type)

2021 ◽  
Vol 7 (5) ◽  
pp. 797
Author(s):  
Girish Mishra ◽  
Yojana Sharma ◽  
Sona Patel ◽  
Viral Patel
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Otitis Media ◽  
Chronic Otitis Media ◽  
Jugular Bulb ◽  
Facial Canal ◽  
High Resolution Computed Tomography ◽  
K Value ◽  
Tegmen Tympani ◽  
Good Agreement

<p class="abstract"><strong>Background:</strong> Chronic otitis media is a major health problem with significant morbidity. High-resolution computed tomography (HRCT) is extremely useful for middle ear pathology and extension of the disease. The objective was to study the correlation between preoperative HRCT and intraoperative findings in chronic suppurative otitis media (squamous type).</p><p class="abstract"><strong>Methods:</strong> This analytical study included 61 cases of chronic otitis media (squamous type). Preoperative HRCT findings were correlated with intraoperative findings. Sensitivity, specificity, PPV, NPV and kappa value were estimated.</p><p class="abstract"><strong>Results:</strong> Out of 61 cases 32 were males and 29 were females. Presence of cholesteatoma found on HRCT with 80% sensitivity with k value 0.83 suggesting very good agreement. About ossicular status k value of incus, malleus and stapes were 0.76, 0.65 and 0.54 respectively with sensitivity of 91%, 85% and 58% respectively. Other critical areas on HRCT like sigmoid sinus plate erosion, tegmen tympani dehiscence, scutum erosion, lateral semicircular canal erosion, facial canal erosion and jugular bulb were seen with k value was about 1, 0.8, 0.9, 0.82, 0.72 and 0.65 respectively. So, HRCT shows perfect radiosurgical agreement for sinus plate erosion, very good agreement for disease extension, incus erosion, tegmen tympani erosion, scutum erosion and LSCC erosion and fair agreement for malleus erosion, facial canal erosion and jugular bulb dehiscence and poor agreement for stapes erosion.</p><p class="abstract"><strong>Conclusions:</strong> HRCT is a reliable preoperative investigation in cases of chronic otitis media, squamosal type which would provide  a bird’s eye view in the disease process in the ear.</p>

scholarly journals A study of the correlation between the pre-operative high resolution computed tomography findings and intra-operative findings in chronic otitis media-squamosal type

2020 ◽  
Vol 6 (2) ◽  
pp. 273
Author(s):  
Gopinathan N. Pillai ◽  
Anjana Mary Reynolds ◽  
Melwin Tom
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Temporal Bone ◽  
Otitis Media ◽  
Chronic Otitis Media ◽  
Hearing Preservation ◽  
High Resolution Computed Tomography ◽  
Surgical Methods ◽  
Hrct Temporal Bone ◽  
Operative Findings

<p class="abstract"><strong>Background:</strong> Chronic otitis media (COM) is characterized by ear discharge and hearing loss. There are two types of COM depending on the presence or absence of cholesteatoma. COM with cholesteatoma is termed as COM squamosal type and COM without cholesteatoma is termed COM mucosal type. COM squamosal type is associated with potential complications. If cholesteatoma is detected early, less invasive surgical methods can be used for hearing preservation and make ear safe from recurrent infections. A proper clinical examination can most often diagnose a cholesteatoma but require a high resolution computed tomography (HRCT) scan to assess the extent of the disease and potential complications. But most often the intra operative findings may not correlate with the HRCT findings. The aim of the study was to evaluate the clinical presentation of COM squamosal disease, preoperative HRCT and intra-operative findings and formulate a proper surgical intervention to avoid complications.  </p><p class="abstract"><strong>Methods:</strong> This is a comparative study of the pre-operative HRCT and intra-operative findings in COM squamosal type. In the present study of 35 patients with squamosal disease, the HRCT findings were compared with intra-operative findings.</p><p class="abstract"><strong>Results:</strong> The study showed a good correlation between pre-operative HRCT of temporal bone and intra operative finding. The findings are statistically significant (p&lt;0.001).</p><p class="abstract"><strong>Conclusions:</strong> The study shows a good correlation between pre-operative HRCT temporal bone and intra-operative findings.</p>

Diagnostic Accuracy of HRCT Chest in Detection of Covid-19 Infection Taking PCR as Gold Standard

2021 ◽  
Vol 15 (6) ◽  
pp. 1679-1681
Author(s):  
Afaque Ali ◽  
Majid Shaikh ◽  
Ahsanullah . ◽  
Adeel Ahmed ◽  
Abid Ali Sahito ◽  
...  
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Diagnostic Accuracy ◽  
Predictive Value ◽  
Gold Standard ◽  
Cross Sectional Study ◽  
Radiology Department ◽  
High Resolution Computed Tomography ◽  
Cross Sectional ◽  
Head Of Department

Objective: To determine the diagnostic accuracy of High-resolution computed tomography (HRCT) chest in detection of covid-19 infection taking PCR as gold standard. Study Design: Cross-sectional study Setting: Radiology department of Tabba Hospital, Karachi. Duration: From March 2019 to September 2020 Material and Methods: All the clinically suspected patients of covid-19, of any age, both genders and those referred to radiology for High-resolution computed tomography (HRCT) chest to detect the covid-19 infection were included. After two days, patients’ PCR reports were collected from the ward, after taking informed consent and permission from head of department. The diagnostic accuracy of HRCT was established with respect to sensitivity, PPV, NPV, and specificity by taking PCR as gold standard. All the information was collected via study proforma. Results: Total 70 patients suspected for COVID-19 were studied, and the patients’ mean age was 58.23±9.52 years. Males were in majority 54(77.1%). As per HRCT findings, COVID-19 infection was positive in 46 patients, however, 48 patients were detected positive for COVID-19 infection as per PCR findings. In the detection of COVID-19 infection, HRCT chest showed sensitivity of 91%, specificity of 90%, PPV of 83%, NPV of 84% and diagnostic accuracy of 94%; by taking PCR as gold standard. Conclusion: High-resolution computed tomography (HRCT) is a reliable diagnostic approach in promptly detecting the COVID-19; with 91% sensitivity, 90% specificity, 83% positive predictive value, 84% negative predictive value and 94% diagnostic accuracy. Keywords: Accuracy, HRCT, COVID-19

A study on modelling cochlear duct mid-scalar length based on high-resolution computed tomography, and its effect on peri-modiolar and mid-scalar implant selection

2019 ◽  
Vol 133 (09) ◽  
pp. 764-769
Author(s):  
G Pamuk ◽  
A E Pamuk ◽  
A Akgöz ◽  
E Öztürk ◽  
M D Bajin ◽  
...  
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Round Window ◽  
Chronic Otitis Media ◽  
Lateral Wall ◽  
High Resolution Computed Tomography ◽  
Cochlear Duct ◽  
Implant Selection ◽  
Cochlear Duct Length ◽  
Implant Length

AbstractObjectiveTo determine cochlear duct mid-scalar length in normal cochleae and its role in selecting the correct peri-modiolar and mid-scalar implant length.MethodsThe study included 40 patients with chronic otitis media who underwent high-resolution computed tomography of the temporal bone. The length and height of the basal turn, mid-modiolar height of the cochlea, mid-scalar and lateral wall length of the cochlear duct, and the ‘X’ line (the largest distance from mid-point of the round window to the mid-scalar point of the cochlear canal) were measured.ResultsCochlear duct lateral wall length (28.88 mm) was higher than cochlear duct mid-scalar length (20.08 mm) (p &lt; 0.001). The simple linear regression equation for estimating complete cochlear duct length was: cochlear duct length = 0.2 + 2.85 × X line.ConclusionUsing the mid-scalar point as the reference point (rather than the lateral wall) for measuring cochlear duct mid-scalar length, when deciding on the length of mid-scalar or peri-modiolar electrode, increases measurement accuracy. Mean cochlear duct mid-scalar length was compatible with peri-modiolar and mid-scalar implant lengths. The measurement method described herein may be useful for pre-operative peri-modiolar or mid-scalar implant selection.

scholarly journals Performance of pulmonary artery dimensions measured on high-resolution computed tomography scan for identifying pulmonary hypertension

2020 ◽  
Vol 6 (1) ◽  
pp. 00232-2019
Author(s):  
Pailin Ratanawatkul ◽  
Andrea Oh ◽  
J. Caleb Richards ◽  
Jeffrey J. Swigris
Keyword(s):  
Computed Tomography ◽  
Pulmonary Hypertension ◽  
High Resolution ◽  
Pulmonary Artery ◽  
Predictive Value ◽  
High Specificity ◽  
Chronic Obstructive ◽  
High Resolution Computed Tomography ◽  
Entire Cohort ◽  
Right Heart Catheterisation

BackgroundOn high-resolution computed tomography (HRCT), pulmonary artery (PA) dimensions may hint at the presence of pulmonary hypertension. We aimed to determine how accurately various measures of the PA, as viewed on HRCT, predict right heart catheterisation (RHC)-confirmed pulmonary hypertension.MethodsWe retrospectively reviewed patients who had HRCT and RHC between 2010 and 2018. Analyses considered respiratory cycle, pulmonary hypertension diagnostic criteria, time between HRCT and RHC, and subgroup analysis in interstitial lung disease (ILD) and chronic obstructive pulmonary disease (COPD).ResultsOf 620 patients, 375 had pulmonary hypertension. For pulmonary hypertension (defined as mean PA pressure (mPAP) ≥25 mmHg) and from HRCT performed within 60 days of RHC, main PA diameter (MPAD) ≥29 mm had a sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of 88%, 42%, 0.70 and 0.70, respectively, while ratio of the diameter of the PA to the diameter of the ascending aorta (PA:Ao) ≥1.0 showed 53%, 85%, 0.84 and 0.54, respectively. In general, results were similar when the interval between HRCT and RHC varied from 7 to 60 days and when measured on expiratory images. In ILD, the sensitivity of MPAD was higher; in COPD, the specificity of PA:Ao was higher. There was moderately positive correlation between mPAP and inspiratory MPAD, PA:Ao, right PA diameter (RPAD), left PA diameter (LPAD) and (RPAD+LPAD)/2 (r=0.48, 0.51, 0.34, 0.34 and 0.36, respectively), whereas there was weak negative correlation between mPAP and PA angle (r= −0.24).ConclusionsFindings on HRCT may assist in the diagnosis of RHC-confirmed pulmonary hypertension. MPAD ≥29 mm had high sensitivity and PA:Ao ≥1.0 had high specificity. Compared with the entire cohort, MPAD had greater sensitivity in ILD and PA:Ao had higher specificity in COPD.

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