DESIGN AND FABRICATION OF MULTIPURPOSE SMART PHANTOM FOR PET/CT IMAGING
| Presenter | : | RAFIDAH BINTI ZAINON |
| : | - | |
| Date | : | 15 / 9 / 2008 |
| Time | : | 3.00 PM |
| Venue | : | BILIK MAKMAL FIZIK PERUBATAN (NO. 233), ARAS 1, PUSAT PENGAJIAN SAINS FIZIK |
| Sypnosis | : | Phantom studies are an important part in medical imaging as it can evaluate the performance and quality assurance (QA) test of dual-modality PET/CT. The purpose of this study is to design, fabricate and develop a multipurpose smart phantom which includes the internal structures, water, human tissue equivalent materials and radioactive source for dual-modality Positron Emission Tomography/Computed Tomography (PET/CT) imaging. In this study, experimental determination of Hounsfield units (HU), mass attenuation coefficient, elemental composition analysis and structure analysis were performed on phantom materials using PET/CT scanner, Multichannel Analyser (MCA), CHNS analyser and Scanning Electron Microscope/Energy Dispersive X-Ray (SEM/EDX) respectively. From these analyses, the fabricated inserts of epoxy, polyurethane and paraffin wax were found to be equivalent to human spongy bone, lung and soft tissue respectively. The CT numbers of these inserts were +220.094 HU, -949.725 HU and -115.499 HU respectively. Besides, other properties of these phantom materials had been identified and were compared with human tissues. These fabricated inserts together with PMMA and PTFE were then selected for the designed and fabrication of a multipurpose smart phantom. PET/CT performance tests carried out on the phantom demonstrated that the fabricated phantom can be utilised as a phantom for PET/CT imaging for various types of human tissues. |
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