In recent years, computer tomography (CT) has become an increasingly important tool in the clinical diagnosis, mainly because of the advent of fast scanning techniques and high spatial resolution of the vision hardware. In addition to the detailed information of morphology, functional CT also gives the physiologic information, such as perfusion. It can help doctors to make better decision.
Our goal in this paper is to evaluate lung perfusion by comparing pre and post contrast-enhanced CT images. After the contrast agent is injected, it flows with blood stream and causes the temporal changes in CT values. Therefore, we can quantize perfusion values from the changes of CT values between pre and post contrast-enhanced CT images. Then guided by color -coded maps, a quantitative analysis for the assessment of lung perfusion can be performed. As a result, it is easier for observer to determinate the lung perfusion distribution.
Moreover, we can use color - coded images to visualize pulmonary embolism and monitor therapeutic efficacy.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0715105-160137 |
| Date | 15 July 2005 |
| Creators | Weng, Ming-hsu |
| Contributors | Ming-ting Wu, none, Chen-wen Yen |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0715105-160137 |
| Rights | unrestricted, Copyright information available at source archive |
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