https://scholars.lib.ntu.edu.tw/handle/123456789/514704
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.author | Yang C.-Y. | en_US |
dc.contributor.author | YA-FANG CHEN | en_US |
dc.contributor.author | CHUNG-WEI LEE | en_US |
dc.contributor.author | Huang A. | en_US |
dc.contributor.author | Shen Y. | en_US |
dc.contributor.author | Wei C. | en_US |
dc.contributor.author | HON-MAN LIU | en_US |
dc.date.accessioned | 2020-09-23T08:35:55Z | - |
dc.date.available | 2020-09-23T08:35:55Z | - |
dc.date.issued | 2008 | - |
dc.identifier.issn | 0195-6108 | - |
dc.identifier.uri | https://scholars.lib.ntu.edu.tw/handle/123456789/514704 | - |
dc.description.abstract | BACKGROUND AND PURPOSE: Conventional CT angiography (CTA) is acquired during only a short interval in the arterial phase, which limits its ability to evaluate the cerebral circulation. Our aim was to compare the image quality and radiation dose of conventional single-phase CTA (SP-CTA) with a multiphase CTA (MP-CTA) algorithm reconstructed from a perfusion CT (PCT) dataset. MATERIALS AND METHODS: Fifty consecutive patients undergoing head CTA and PCT in 1 examination were enrolled. The PCT dataset was obtained with 40.0-mm-detector coverage, 5.0-mm axial thickness, 80 kilovolt peak (kVp), 180 mA, and 30 mL of contrast medium. MP-CTA was reconstructed from the same PCT dataset with an axial thickness of 0.625 mm by using a new axial reconstruction algorithm. A conventional SP-CTA dataset was obtained with 0.625-mm axial thickness, 120 kVp, 350 mA, and 60 mL of contrast medium. We compared image quality, vascular enhancement, and radiation dose. RESULTS: SP-CTA and MP-CTA of 50 patients (male/female ratio, 31/19; mean age, 59.25 years) were analyzed. MP-CTA was significantly better than SP-CTA in vascular enhancement (P = .002), in the absence of venous contamination (P = .006), and was significantly higher in image noise (P = .001). MP-CTA used less contrast medium than SP-CTA and could demonstrate hemodynamic information. The effective dose of MP-CTA was 5.73 mSv, which was equal to that in conventional PCT, and it was 3.57 mSv in SP-CTA. CONCLUSION: It is feasible that MP-CTA may provide both CTA and PCT results. Compared with SP-CTA, MP-CTA provides comparable image quality, better vascular enhancement, hemodynamic information, and more noise with less detail visibility with a lower tube voltage. The radiation dose of MP-CTA is higher than that of SP-CTA, but the dose can be reduced by altering the sampling interval. | - |
dc.relation.ispartof | American Journal of Neuroradiology | - |
dc.subject.classification | [SDGs]SDG3 | - |
dc.subject.other | contrast medium; iopromide; adult; algorithm; article; clinical article; computed tomographic angiography; controlled study; dose response; female; head; hemodynamics; human; image quality; intermethod comparison; male; radiation dose; sex ratio; statistical significance; Adult; Aged; Carotid Stenosis; Cerebral Angiography; Cerebral Arterial Diseases; Cerebral Infarction; Contrast Media; Dose-Response Relationship, Drug; Feasibility Studies; Female; Humans; Image Processing, Computer-Assisted; Intracranial Aneurysm; Intracranial Arteriovenous Malformations; Iohexol; Male; Middle Aged; Moyamoya Disease; Phantoms, Imaging; Radiation Dosage; Sensitivity and Specificity; Tomography, Spiral Computed; Tomography, X-Ray Computed | - |
dc.title | Multiphase CT angiography versus single-phase CT angiography: Comparison of image quality and radiation dose | en_US |
dc.type | journal article | en |
dc.identifier.doi | 10.3174/ajnr.A1073 | - |
dc.identifier.pmid | 18403555 | - |
dc.identifier.scopus | 2-s2.0-49749103154 | - |
dc.relation.pages | 1288-1295 | - |
dc.relation.journalvolume | 29 | - |
dc.relation.journalissue | 7 | - |
item.cerifentitytype | Publications | - |
item.fulltext | no fulltext | - |
item.openairecristype | http://purl.org/coar/resource_type/c_6501 | - |
item.openairetype | journal article | - |
item.grantfulltext | none | - |
crisitem.author.dept | Radiology | - |
crisitem.author.dept | Medical Imaging-NTUH | - |
crisitem.author.dept | Medical Imaging-NTUH | - |
crisitem.author.dept | Radiology | - |
crisitem.author.dept | Radiology | - |
crisitem.author.dept | Medical Imaging-NTUH | - |
crisitem.author.orcid | 0000-0003-2995-9189 | - |
crisitem.author.orcid | 0000-0002-3573-2506 | - |
crisitem.author.orcid | 0000-0001-6715-6366 | - |
crisitem.author.parentorg | College of Medicine | - |
crisitem.author.parentorg | National Taiwan University Hospital | - |
crisitem.author.parentorg | National Taiwan University Hospital | - |
crisitem.author.parentorg | College of Medicine | - |
crisitem.author.parentorg | College of Medicine | - |
crisitem.author.parentorg | National Taiwan University Hospital | - |
顯示於: | 醫學院附設醫院 (臺大醫院) |
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