scholarly journals Patients with dysplasia of the auricle and external ear abnormalities: Evaluation of the temporal bones malformation with thin-section computed tomography

2010 ◽  
Vol 41 (3) ◽  
pp. 453-458
Author(s):  
Mohamad H. Abowarda ◽  
Wail Fayez Nasr
Keyword(s):  
Computed Tomography ◽  
Thin Section ◽  
External Ear ◽  
Temporal Bones

scholarly journals Structure features of the temporal bone in patients with acquired post-inflammatory atresia of the external auditory canal

2020 ◽  
Vol 19 (5) ◽  
pp. 51-56
Author(s):  
Kh. M. Diab ◽  
◽  
N. A. Daikhes ◽  
D. S. Kondratchikov ◽  
A. S. Korobkin ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Comparative Analysis ◽  
External Auditory Canal ◽  
Anterior Wall ◽  
Ct Scans ◽  
External Ear ◽  
Suppurative Otitis Media ◽  
Lateral Process ◽  
Temporal Bones ◽  
Acquired Atresia

Objective: Comparative analysis of the structure of the external auditory canal (EAC) according to computed tomography (CT) scans of the temporal bones in patients with acquired post-inflammatory atresia of the EAC and patients with safe chronic suppurative otitis media (SCSOM) without atresia. Patients and methods: 42 patients (43 ears) with acquired post-inflammatory atresia of the EAC and 11 patients (22 ears) with bilateral SCSOM without acquired atresia were included in the study. Based on the original axial СT images and multi-planar reformation images were measured: thickness of the anterior wall in bony part of EAC; anterior tympanomeatal angle and the distance from the lateral process of the malleus to the anterior wall of an EAC; lumen of the EAC in front of the tympanic sulcus. Results: The lumen of the bone part of the EAC in patients with acquired post-inflammatory atresia is 17,0% less than in patients with SCSOM without atresia; patients with acquired post-inflammatory atresia have a more acute anterior tympanomeatal angle (33° versus 68°) than patients with SCSOM without atresia. The thickness of the anterior wall of the EAC in the bone part in patients with acquired post-inflammatory atresia of the EAC does not statistically differ from the analogous parameter in patients with SCSOM without atresia. Conclusion: The revealed results indirectly indicate the presence of certain features of the structure of the external ear in patients with acquired post-inflammatory atresia of the EAC such as narrower anterior tympanomeatal angle and lumen of the bone part. These features of the EAC structure may contribute to the more likely development of post-inflammatory atresia development.

scholarly journals Thin-section Computed Tomography Detects Long-term Pulmonary Sequelae 3 Years after Novel Influenza A Virus-associated Pneumonia

2015 ◽  
Vol 128 (7) ◽  
pp. 902-908 ◽  
Author(s):  
Zhi-Heng Xing ◽  
Xin Sun ◽  
Long Xu ◽  
Qi Wu ◽  
Li Li ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Influenza A Virus ◽  
Thin Section ◽  
Influenza A ◽  
Novel Influenza A

Facial Canal Anatomy in Patients with Microtia: Evaluation of the Temporal Bones with Thin-Section CT

Radiology ◽  
2002 ◽  
Vol 225 (3) ◽  
pp. 852-858 ◽  
Author(s):  
Hideki Takegoshi ◽  
Kimitaka Kaga ◽  
Shigeru Kikuchi ◽  
Ken Ito
Keyword(s):  
Thin Section ◽  
Facial Canal ◽  
Temporal Bones

Relation Between Thin-Section Computed Tomography and Clinical Findings of Mucinous Adenocarcinoma

2015 ◽  
Vol 99 (3) ◽  
pp. 975-981 ◽  
Author(s):  
Hajime Watanabe ◽  
Haruhiro Saito ◽  
Tomoyuki Yokose ◽  
Yuji Sakuma ◽  
Shuji Murakami ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Thin Section ◽  
Mucinous Adenocarcinoma ◽  
Clinical Findings

scholarly journals Analysis of tympanic sinus shape for purposes of intraoperative hearing monitoring: a microCT study

2021 ◽  
Author(s):  
Małgorzata Bilińska ◽  
Tomasz Wojciechowski ◽  
Jacek Sokołowski ◽  
Kazimierz Niemczyk
Keyword(s):  
Computed Tomography ◽  
Round Window ◽  
Optimal Placement ◽  
Facial Canal ◽  
Average Width ◽  
Sinus Tympani ◽  
Stapedius Muscle ◽  
Electrode Shape ◽  
Posterior Tympanotomy ◽  
Temporal Bones

Abstract Purpose Sinus tympani is the space in the retrotympanum, with variable morphology. Computed tomography is a common tool to investigate sinus tympani anatomy. During cochlear implantation or tympanoplasty, electrocochleography can be used for hearing monitoring. In such a surgical strategy the electrode is placed in the round window’s region throughout posterior tympanotomy. Common accessible needle-shaped electrodes using is difficult in achieving intraoperative stabilization. The aim of the study is to assess the dimensions and shape of sinus tympani, basing on the micro computed tomography scans for purposes of establishing the possible new electrocochleography electrode shape. Materials and methods Sixteen fresh frozen cadaveric temporal bones were dissected. MicroCT measurements included the depth and the width of sinus tympani, width of facial canal with stapedius muscle chamber. Obtained data were analyzed statistically with the use of RStudio 1.3.959 software. Results The highest average width of sinus tympani amounted for 2.68 mm, depth measured at the round window plane for 3.19 mm. Width of facial canal with stapedius muscle chamber highest average values at the round window plane- 3.32 mm. The lowest average minimum and maximum values were calculated at the 1 mm above the round window plane. The highest average posterior tympanotomy width was 2.91 mm. Conclusions The shape of the tympanic sinus is like a trough with the narrowest and deepest dimensions in the middle part. The ST shape and dimensions should be taken into account in constructing the ECochG electrode, designed for optimal placement through posterior tympanotomy approach.

scholarly journals Retrospective Study Comparing Differentiation Methods in Noninvasive Pulmonary Small Adenocarcinomas Using Mediastinal and Lung Window Images Acquired by Thin-section Computed Tomography

Haigan ◽  
2011 ◽  
Vol 51 (6) ◽  
pp. 694-700
Author(s):  
Tetsuro Kondo ◽  
Shuji Murakami ◽  
Haruhiro Saito ◽  
Fumihiro Oshita ◽  
Hiroyuki Ito ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Retrospective Study ◽  
Thin Section ◽  
Lung Window

Features Based on Thin-section Computed Tomography Identify the Typeof lung Adenocarcinoma

2020 ◽  
Author(s):  
Zhiqiang Li ◽  
Hongwei Zheng ◽  
Shanshan Liu ◽  
Xinhua Wang ◽  
Lei Xiao ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Lung Adenocarcinoma ◽  
Thin Section ◽  
Ground Glass Opacity ◽  
Smoking History ◽  
Ground Glass ◽  
Quantitative Aspect ◽  
Adenocarcinoma In Situ ◽  
Invasive Adenocarcinoma ◽  
Pleural Invasion

Abstract Background: To investigate whether thin-section computed tomography (TSCT) features may efficiently guide the invasiveness basedclassification of lung adenocarcinoma. Methods: Totally, 316 lung adenocarcinoma patients (from 2011-2015) were divided into three groups: 56 adenocarcinoma in situ (AIS), 98 minimally invasive adenocarcinoma (MIA), and 162 invasive adenocarcinoma (IAC) according their pathological results. Their TSCT features, including nodule pattern, shape, pleural invasion, solid proportion, border, margin, vascular convergence, air bronchograms, vacuole sign, pleural indentation, diameter, solid diameter, and CT values of ground-glass nodules (GGN) were analyzed. Pearson’s chi-square test, Fisher’s exact test and One-way ANOVA were adopted tocomparebetweengroups. Receiver operating characteristic (ROC) analysis wereperformedto assess its value for prediction and diagnosis. Results: Patients with IAC were significantly elder than those in AIS or MIA group,and more MIA patients had a smoking history than AIS and IAC. No recurrence happened in the AIS and MIA groups, while 4.3% recurrences were confirmed in the IAC group. As for TSCT variables, we found AIS group showed dominantly higher 91.07%PGGN pattern and 87.50% round/oval nodules than that in MIA and IAC group. In contrast, MIA group showed more cases with undefined border and vascular convergence than AIS and IAC group. Importantly, IAC group uniquely showed higher frequency of pleural invasion compared with MIA and AIS group. The majority of patients (82.1%) in IAC group showed ≥ 50% solid proportion. We found diameter and solid diameter of the lesions were notably larger in the IAC group compared with AIS and MIA groupin quantitative aspect. In addition, for MGGNs, the CT values of ground-glass opacity (GGO) and ground-glass opacity solid portion (GGO-solid) were both higher in the IAC group than AIS and MIA. Finally, we also observed that smooth margin took a dominant proportion in the AIS group while most cases in the IAC group had a lobulate margin. Patients in MIA and IAC group shared higher level of air bronchograms and vacuole signs than AIS group. Conclusions: The unique features in different groups identified by TSCT had diagnosis value for lung adenocarcinoma.

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