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Cone beam computed tomographic segmentation in volumetric measurements of maxillary sinus using different softwares : A validity and reliability study / Reham Ashraf Hussien Mohammed ; Supervised Mushira Mohammed Dahaba , Reham Mohamed Hamdy , Salma Belal Eid

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Cairo : Reham Ashraf Hussien Mohammed , 2021Description: 182 P. : charts , facsimiles ; 25cmOther title:
  • التجزئه للتصوير المقطعى بالحاسىوب مخروطى الشعاع فى القياسات الحجمية للجيب الفكى العلوى باستخدام برمجيات مختلفه : دراسه للصلاحيه و الموثوقيه [Added title page title]
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Dissertation note: Thesis (Ph.D.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Oral (Radiology and Diagnosis) Summary: Aim: This study was conducted to assess validity and reliability of cone beam computed tomography of semiautomatic segmentation in volumetric measurements of maxillary sinus using different software. Methodology: Phase I in vitro: 21 maxillary sinuses of dry human skulls were acquired from the Anatomy department, Faculty of Medicine, Cairo University. Phase II in vivo: 12 maxillary sinuses of patients who came to Oral and Maxillofacial Department, Faculty of Dentistry, Cairo University for CBCT imaging for orthodontic treatment. The radiographic imaging of the skulls and the patients by CBCT machine was performed in Oral and Maxillofacial Radiology Department, Faculty of Dentistry, Cairo University. CBCT images were taken from workstation of Oral and Maxillofacial Radiology Department, Cairo University as DICOM file format. The volumetric measurements of the maxillary sinuses were conducted using semi-automatic segmentation of different software: Romexis 4.2.6.R., Mimics Medical 19.0 & Ondem and 3D and compared with the gold standard of real volumetric measurements in phase I (skulls) and of volumetric measurements of manual segmentation in phase II (patients). Results: The results revealed an excellent intra and inter-observer reliability of the three investigated software in both in-vitro and in-vivo sections. Regarding the validity of in-vitro section; there was no significant difference with the gold standard versus Ondemand3D & Romexis (p= 0.164 & 0.296), while Mimics revealed a significant difference difference between measured differences (p<0.001). The highest difference was found in Mimics (-0.92±0.68) followed by Ondemand (0.28±0.87) while the lowest difference was found with Romexis (-0.25±1.05)
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Thesis Thesis قاعة الرسائل الجامعية - الدور الاول المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.09.05.Ph.D.2021.Re.C (Browse shelf(Opens below)) Not for loan 01010110084903000
CD - Rom CD - Rom مخـــزن الرســائل الجـــامعية - البدروم المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.09.05.Ph.D.2021.Re.C (Browse shelf(Opens below)) 84903.CD Not for loan 01020110084903000
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Cai01.09.05.Ph.D.2021.No.E Evaluation of dimensional accuracy of 3D printed mandibular model using two different additive manufacturing techniques based on ultra-low dose multislice computed tomography scan data ; A diagnostic accuracy study / Cai01.09.05.Ph.D.2021.No.E Evaluation of dimensional accuracy of 3D printed mandibular model using two different additive manufacturing techniques based on cone beam computed tomography scan data : A diagnostic accuracy study / Cai01.09.05.Ph.D.2021.No.E Evaluation of dimensional accuracy of 3D printed mandibular model using two different additive manufacturing techniques based on cone beam computed tomography scan data : A diagnostic accuracy study / Cai01.09.05.Ph.D.2021.Re.C Cone beam computed tomographic segmentation in volumetric measurements of maxillary sinus using different softwares : A validity and reliability study / Cai01.09.05.Ph.D.2021.Re.C Cone beam computed tomographic segmentation in volumetric measurements of maxillary sinus using different softwares : A validity and reliability study / Cai01.09.05.Ph.D.2022.Ay.D Volumetric and linear assessment of maxillarymandibular and zygomatic bone as donor sites foralveolar ridge augmentation using cbct : a crosssectional stud / Cai01.09.05.Ph.D.2022.Ma.a Accuracy of cone beam computed tomography for measuring mandibular pig soft tissue thickness using a radiopaque material in comparison with real measurement : diagnostic accuracy study /

Thesis (Ph.D.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Oral (Radiology and Diagnosis)

Aim: This study was conducted to assess validity and reliability of cone beam computed tomography of semiautomatic segmentation in volumetric measurements of maxillary sinus using different software. Methodology: Phase I in vitro: 21 maxillary sinuses of dry human skulls were acquired from the Anatomy department, Faculty of Medicine, Cairo University. Phase II in vivo: 12 maxillary sinuses of patients who came to Oral and Maxillofacial Department, Faculty of Dentistry, Cairo University for CBCT imaging for orthodontic treatment. The radiographic imaging of the skulls and the patients by CBCT machine was performed in Oral and Maxillofacial Radiology Department, Faculty of Dentistry, Cairo University. CBCT images were taken from workstation of Oral and Maxillofacial Radiology Department, Cairo University as DICOM file format. The volumetric measurements of the maxillary sinuses were conducted using semi-automatic segmentation of different software: Romexis 4.2.6.R., Mimics Medical 19.0 & Ondem and 3D and compared with the gold standard of real volumetric measurements in phase I (skulls) and of volumetric measurements of manual segmentation in phase II (patients). Results: The results revealed an excellent intra and inter-observer reliability of the three investigated software in both in-vitro and in-vivo sections. Regarding the validity of in-vitro section; there was no significant difference with the gold standard versus Ondemand3D & Romexis (p= 0.164 & 0.296), while Mimics revealed a significant difference difference between measured differences (p<0.001). The highest difference was found in Mimics (-0.92±0.68) followed by Ondemand (0.28±0.87) while the lowest difference was found with Romexis (-0.25±1.05)

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