Document Details

Document Type : Thesis 
Document Title :
DOSE REDUCTION OF THE SCATTERED RADIATION FROM MEDICAL RADIATION EXPOSURES USING 3D-PRINTED ORGAN-SHAPED FILLABLE SHIELDS
تقليل جرعات الأشعة الثانوية الناتجة عن استخدام التشعيع الطبي، باستخدام تقنية الطباعة الثلاثية الأبعاد لتصميم دروع قابلة للتعبئة ومصممة لتناسب العضو المراد حمايته
 
Subject : faculty of Engineering 
Document Language : Arabic 
Abstract : Our innovation is to use 3D-printing technology to produce a customizable radiation shielding tool designed in a shape that fits explicitly and covers a radiosensitive body part that we are seeking to protect. Moreover, this tool is designed to be filled with radiation shielding material (e.g., lead or tungsten) to make these 3D-printed plastic covers reliable enough to protect against any unwanted radiation. This thesis includes several designed and 3D-printed shielding. One generic shielding for a phantom’s breast and two specific shielding for a 10-year old pediatric phantom’s chest and eyes. Testing experiments were set in the radiotherapy department (using LINAC) and diagnostic radiology department (using CT) at King Abdulaziz University Hospital (Saudi Arabia, Jeddah). Generic shielding, filled with 2.5 mm diameter of lead beads (forming a 12 mm thickness of shielding material), was tested in the radiotherapy department. It was applied on a RANDO phantom and was planned to include only one-breast irradiation treatment (6 MV). A 3D-printed breast-shield was placed on the out-of-field breast, which we wanted to protect against any unwanted radiation. For dose analysis, radiation detectors (OSLDs and MOSFETs) were placed directly on the top area of both breasts and top of the shield as well. Shielding dose analysis presented an unwanted radiation dose reduction of at least 60% for the protected phantom’s breast. Generic shielding tests at the diagnostic radiology department showed an unwanted radiation dose reduction of at least 30% for the protected phantom’s breast during an abdomen CT scan (120 KV). Specific chest and eye shielding were filled with 2.5 mm diameter of lead beads, forming a thickness of 15 mm of shielding material. Shielding tests during a planned LINAC abdomen treatment (6 MV) showed an unwanted radiation dose reduction range of (2% - 19% of the direct treating beam). On the other hand, during CT scansو analysis showed no dose reduction 
Supervisor : Prof. Abdulraheem Kinsara 
Thesis Type : Master Thesis 
Publishing Year : 1441 AH
2020 AD 
Co-Supervisor : Dr. Essam Banoqitah 
Added Date : Monday, March 2, 2020 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
فؤاد حمود الندويAlnadwi, Fuad HamoodResearcherMaster 

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