scholarly journals Maxillary bone deformation in patients with leprosy: a novel method for quantitative evaluation by CT scan

2019 ◽  
Vol 88 (2) ◽  
pp. 43-49
Author(s):  
Norio Kasai
2015 ◽  
Vol 1 (1) ◽  
pp. 31-40
Author(s):  
Rino Rusdiono ◽  
Arif Faisal

Odontogenic tumor is a lesion originated from epithelium, ectomesenchymal, or mesenchymal component which still retain part of dental-forming element.A female 20 years old had complaint a mass in the oral cavity and obtructed nasal. Physical examination showed a mass on molar region of the left axillary bone. Diagnostic imaging by using OPG was suspected ameloblastoma, while CT scan concluded as a dentigerous cyst in left maxillary bone. Both of the lesions were cystic  abnormalities, that sometimes very difcult to di?erentiate due to their similarity. Pathological fndings was clear cell odontogenic tumor or clear cell odontogenic carcinoma of tissue mass after resection had been conducted. This case report is proposed because there is a discordance from imaging examination in both OPG and CT Scan with the fnal histopathological examination. CCOC di?erential diagnosis will be outlined here so we can understand the feature of CCOC better in imaging examination to prevent misdiagnosis which can infere further treatment.


2018 ◽  
Vol 54 ◽  
pp. 379-387 ◽  
Author(s):  
Fabrizio Medeossi ◽  
Marco Sorgato ◽  
Stefania Bruschi ◽  
Enrico Savio

2012 ◽  
Vol 26 (8) ◽  
pp. 634-643 ◽  
Author(s):  
Yasushi Yamamoto ◽  
Masahisa Onoguchi ◽  
Masuo Haramoto ◽  
Nobuhiro Kodani ◽  
Akio Komatsu ◽  
...  

2006 ◽  
Vol 2 (2) ◽  
pp. 136-140 ◽  
Author(s):  
Fengyu Zheng ◽  
James C. Farmer ◽  
Harvinder S. Sandhu ◽  
Patrick F. O'Leary

Author(s):  
Zhiliang Li ◽  
Xiang Long ◽  
Olusegun J. Ilegbusi

This paper presents a novel method to simulate flow and deformation of the lung. The lung is assumed to behave as a poro-elastic medium with heterogeneous elastic property. The method uses a flow-structure interaction technique to simultaneously model flow within the airway and deformation of the lung lobes. The 3D lung geometry is reproduced from 4D CT scan dataset obtained on real human subjects at a Cancer Center. The non-linear Young’s modulus is estimated in a parallel study based on similar CT scan dataset. The novelty of the present technique lies in the use of onion-layer grid with distributed spatial permeability. It allows prediction of the spatial lung displacement that could be used for tracking lung tumor during radiotherapy.


2019 ◽  
Vol 02 (01) ◽  
pp. e1-e6
Author(s):  
Tadahiko Saiki ◽  
Teruhiro Ogawa ◽  
Kazuaki Kuroda ◽  
Satoko Miyahara ◽  
Takuma Makino ◽  
...  

AbstractWe clinically investigated 299 cases of fresh nasal bone fractures diagnosed using computed tomography (CT) scan in our hospital between January 2008 and December 2017. The ages of the patients ranged from 2 to 93 years with an average of 29.4 years. There were 207 males and 92 females. The causes of the nasal bone fractures included sports (93 cases), falls (80 cases), blow or injuries (53 cases), violence or fights (40 cases), and traffic accidents (33 cases). Males in their teenage years accounted for the majority of cases, particularly in the sports-related injuries. In these cases, the most common cause was baseball (32 cases), followed by soccer (19 cases), softball (15 cases), basketball (8 cases), and so on. In the cases of traffic accidents, nasal bone fractures were caused by bicycles (18 cases), cars (10 cases), motorcycles (2 cases), and so on. Elderly males and females accounted for high numbers of falls. The external appearance of the nasal bone fractures were divided into three types: the displacement type (171 cases), depressed type (96 cases), and mixed type (32 cases). CT scan revealed nasal septum fractures in 132 cases (44.2%). Complicated facial bone fractures, apart from nasal septum fractures, were found in 35 cases (11.7%, mainly blow-out and maxillary bone fractures). In total, 221 cases (73.9%) underwent closed reductions of the nasal bone fracture. Of these, 206 cases (93.2%) were treated under general anesthesia and in 131 cases (59.3%), open reduction of the nasal septum fractures was mainly performed. In the cases of nasal bone fractures combined with nasal septum fractures, open reduction of the nasal septum fractures was helpful for the recovery of the nasal obstruction and nasal deformity.


2021 ◽  
Vol 80 (1) ◽  
pp. 23-31
Author(s):  
Thiri Hla-Myint ◽  
Michiko Tsuji ◽  
Shoichi Suzuki ◽  
Naoto Obayashi ◽  
Tohru Kurabayashi ◽  
...  

Author(s):  
Xiaopeng Yang ◽  
Zhichan Lim ◽  
Hayoung Jung ◽  
Wonsup Lee ◽  
Heecheon You

The present study estimated instantaneous hand joint centers of rotation (CoR) using 3D reconstructed hand skeleton motions captured from CT scan. We proposed a novel method for estimation of instantaneous joint CoR using the same bone surfaces for different hand postures. Each bone in a template hand posture was registered to the corresponding bone of different hand postures. The registered hand postures (having the same bone surfaces as the template hand posture but different postures) with the template hand posture were then used for estimation of instantaneous joint CoR. The proposed method performed better than the existing methods in estimation of instantaneous joint CoR. Consistency of instantaneous joint CoRs determined in the same rotation angle range was improved by 31.7% to 51.0% in the proposed method. The present study focused on distal interphalangeal (DIP) and proximal interphalangeal (PIP) joints of the index finger of a participant. Joints of the whole hands of more participants will be studied for further generalization of the findings.


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