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Development of Ultra Low Field Magnetic Resonance Imaging for Diagnosis of Hydrocephalus in Developing Countries
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| 자료유형 | 학위논문 |
|---|---|
| 서명/저자사항 | Development of Ultra Low Field Magnetic Resonance Imaging for Diagnosis of Hydrocephalus in Developing Countries. |
| 개인저자 | Obungoloch, Johnes. Obungoloch, Johnesjoint author, |
| 단체저자명 | The Pennsylvania State University. |
| 발행사항 | [S.l.]: The Pennsylvania State University., 2017. |
| 발행사항 | Ann Arbor: ProQuest Dissertations & Theses, 2017. |
| 형태사항 | 145 p. |
| 기본자료 저록 | Dissertations Abstracts International 81-01B. Dissertation Abstract International |
| 학위논문주기 | Thesis (Ph.D.)--The Pennsylvania State University, 2017. |
| 일반주기 |
Source: Dissertations Abstracts International, Volume: 81-01, Section: B.
Publisher info.: Dissertation/Thesis. |
| 요약 | Access to Medical imaging technologies and services still remain a challenge in low and middle income countries (LMICs). The most common imaging modalities available are X-ray technologies and ultrasound, none of which is appropriate for imaging the brain. Diagnosis and monitoring of mental and brain illnesses such as epilepsy, hydrocephalus, and trauma rely mainly on computed tomography (CT) even though they are known to have adverse effects [1] especially with repeated exposures as is required in neuro-surgical interventions.Conventional magnetic resonance imaging (MRI), a relatively safer technology than CT is very expensive for LMICs to afford. The capital costs of installing a 3 T MRI system can be as high as $3 million [2]. On top of the high procurement and installation costs, other requirements such as cryogens and technical expertise have prevented the proliferation of MRI in developing countries. Premised on this background, this thesis explains the development of an ultra-low field MRI suitable for the diagnosis of hydrocephalus in the developing world. Parameters considered for the suitability of this MRI include low cost, low power and technical requirements, portability and flexibility in siting.To meet the aims of this project, an ultra-low field MRI system capable of admitting an adult head was constructed at a cost of $30,000. This MRI system requires no cryogens, has maximum power requirement of 1.5 kW, weighs 125 kg and can operate in an un-shielded room. Images of vegetables were acquired with the system operated at 113 kHz. |
| 일반주제명 | Biomedical engineering. Medical imaging. |
| 언어 | 영어 |
| 바로가기 | 
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