Effect of cbct dose reduction on the mandibular canal visibility compared to standard cbct dose : (Record no. 171036)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 05989namaa22004211i 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | OSt |
| 005 - أخر تعامل مع التسجيلة | |
| control field | 20250406125752.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 250227s2024 |||a|||frm||| 000 0 eng d |
| 040 ## - CATALOGING SOURCE | |
| Original cataloguing agency | EG-GICUC |
| Language of cataloging | eng |
| Transcribing agency | EG-GICUC |
| Modifying agency | EG-GICUC |
| Description conventions | rda |
| 041 0# - LANGUAGE CODE | |
| Language code of text/sound track or separate title | eng |
| Language code of summary or abstract | eng |
| -- | ara |
| 049 ## - Acquisition Source | |
| Acquisition Source | Deposit |
| 082 04 - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Classification number | 617.605 |
| 092 ## - LOCALLY ASSIGNED DEWEY CALL NUMBER (OCLC) | |
| Classification number | 617.605 |
| Edition number | 21 |
| 097 ## - Degree | |
| Degree | M.Sc |
| 099 ## - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Local Call Number | Cai01.09.05.M.Sc.2024.Ma.E. |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Authority record control number or standard number | Mai Mostafa Shaldoum, |
| Preparation | preparation. |
| 245 10 - TITLE STATEMENT | |
| Title | Effect of cbct dose reduction on the mandibular canal visibility compared to standard cbct dose : |
| Remainder of title | Diagnostic accuracy study / |
| Statement of responsibility, etc. | By Mai Mostafa Shaldoum; Supervisors Prof. Dr. Reham Mohamed Hamdy, Dr. Hala Wafik El Fayoumy. |
| 246 15 - VARYING FORM OF TITLE | |
| Title proper/short title | تأثير خفض الجرعة الاشعاعية للأشعة المقطعية بالحاسوب مخروطية الشعاع على رؤية قناة الفك السفلي مقارنة بجرعة الاشعة المقطعية مخروطية الشعاع القياسية : |
| Remainder of title | دراسة دقة تشخيصية / |
| 264 #0 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE | |
| Date of production, publication, distribution, manufacture, or copyright notice | 2024. |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 122 pages : |
| Other physical details | illustrations ; |
| Dimensions | 25 cm. + |
| Accompanying material | CD. |
| 336 ## - CONTENT TYPE | |
| Content type term | text |
| Source | rda content |
| 337 ## - MEDIA TYPE | |
| Media type term | Unmediated |
| Source | rdamedia |
| 338 ## - CARRIER TYPE | |
| Carrier type term | volume |
| Source | rdacarrier |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Sc.)-Cairo University, 2024. |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE | |
| Bibliography, etc. note | Bibliography: pages 106-119. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Aim: To assess the diagnostic accuracy of cone-beam computed tomography (CBCT) dose reduction on the mandibular canal visibility compared to standard CBCT dose, in cases requiring assessment of mandibular canal to plan conservative or radical treatment in the mandibular posterior region.<br/>Methodology: Ten human dry mandibles were scanned six times using a Planmeca ProMax® 3D Mid CBCT machine, employing three conventional CBCT protocols and three ultra-low CBCT protocols. Varying combinations of milliampere-second (mAs) and voxel size values were utilized across these protocols. The clarity of mandibular canal visibility was evaluated using a two-scale scoring system, comparing an ultra-low dose protocol (42.6 mAs/0.2 mm) to the gold standard protocol (180 mAs/0.2 mm). Additionally, the degree of mandibular canal visibility was assessed using a five-scale scoring system, comparing three ultra-low dose protocols (42.6 mAs/0.2 mm, 25.2 mAs/0.4 mm, and 9.9 mAs/0.6 mm) and two conventional protocols (108 mAs/0.4 mm and 50.4 mAs/0.6 mm) to the gold standard protocol. Gutta-percha points were used as reference markers to standardize the area under investigation. Comparative analysis was conducted on 2-dimensional trans-axial images by two observers. Results: The results showed that an ultra-low dose protocol (42.6 mAs/0.2 mm) achieved similar clarity to the standard dose (180 mAs/0.2 mm) when using a simple two-point scoring systemHowever, a more detailed five-point scale revealed significant differences, with higher milliampere-seconds (mAs) and smaller voxel sizes leading to better visibility scores. Importantly, inter-observer agreement remained good for both scoring methods.<br/>Conclusion: Ultra-low dose CBCT appears to be a viable option for tasks requiring clear visualization of the mandibular canal. While standard dose protocol might be preferable for situations demanding more precise canal definition, this study suggests the potential for CBCT dose reduction in clinical applications requiring MC visualization, potentially enabling more conservative treatment approaches. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | تعد قناة الفك السفلي (MC) جزء حساس في عظم الفك تحتوي على الأعصاب والأوعية الدموية. يعد تحديد موقعها بدقة أمرا ضروريا لعلاج اّمن و فعال في الجزء الخلفي من الفك السفلي . التصوير المقطعي بالأشعة السينية بكمبيوتر الشعاع المخروطي (CBCT) هو طريقة تصوير قيمة لهذا الغرض ، ولكنه يتضمن أيضًا التعرض للإشعاع. بحثت هذه الأطروحة في تأثير تقليل جرعة CBCT على رؤية قناة الفك السفلي. بحثت هذه الدراسة في فعالية التصوير المقطعي بالأشعة السينية بكمبيوتر الشعاع المخروطي (CBCT) بجرعة منخفضة للغاية مقارنة بالجرعة القياسية لتوضيح قناة الفك السفلي في عظام الفك البشرية الجافة. قام جهاز Planmeca ProMax® 3D Mid بإنشاء فحوصات CBCT باستخدام إعدادات تعرض لجرعات أشعه مختلفة. كان السؤال الأساسي هو ما إذا كانت جرعات CBCT المنخفضة تؤثر على رؤية قناة الفك السفلي (MC) عند مقارنتها بالجرعة القياسية. تم تحضير عشرة من عظام الفك السفلي بشكل دقيق لمحاكاة ظروف الأنسجة الرخوة في جسم الانسان. خضعت صور CBCT الناتجة لتحليل تفصيلي باستخدام برنامج. Romexis® استخدم الباحثون نظامي تقييم لتقييم كل من وضوح (واضح مقابل غير واضح) ومستوى دقة تفاصيل قناة الفك السفلي. بالإضافة إلى ذلك ، تم ضمان موثوقية التفسير من خلال تقييم اتفاق كل من المراقبين والمراقب الواحد. |
| 530 ## - ADDITIONAL PHYSICAL FORM AVAILABLE NOTE | |
| Issues CD | Issued also as CD |
| 546 ## - LANGUAGE NOTE | |
| Text Language | Text in English and abstract in English. |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Facial bones Tomography |
| Source of heading or term | qrmak |
| 653 #0 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | mandibular canal |
| -- | low dose |
| -- | CBCT |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Reham Mohamed Hamdy |
| Relator term | thesis advisor. |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Hala Wafik El Fayoumy |
| Relator term | thesis advisor. |
| 900 ## - Thesis Information | |
| Grant date | 01-01-2024 |
| Supervisory body | Reham Mohamed Hamdy |
| -- | Hala Wafik El Fayoumy |
| Universities | Cairo University |
| Faculties | Faculty of Dentistry |
| Department | Department of Oral &Maxillofacial Radiology |
| 905 ## - Cataloger and Reviser Names | |
| Cataloger Name | Sara Salah |
| Reviser Names | Eman Ghareb |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Dewey Decimal Classification |
| Koha item type | Thesis |
| Edition | 21 |
| Suppress in OPAC | No |
| Source of classification or shelving scheme | Home library | Current library | Date acquired | Inventory number | Full call number | Barcode | Date last seen | Effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|
| Dewey Decimal Classification | المكتبة المركزبة الجديدة - جامعة القاهرة | قاعة الرسائل الجامعية - الدور الاول | 27.02.2025 | 90938 | Cai01.09.05.M.Sc.2024.Ma.E. | 01010110090938000 | 27.02.2025 | 27.02.2025 | Thesis |