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Quality of preimplant low-dose tomography.
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- Ekestubbe, Annika, 1953 (author)
- Gothenburg University,Göteborgs universitet,Odontologiska institutionen,Institute of Odontology
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- Gröndahl, Kerstin, 1948 (author)
- Gothenburg University,Göteborgs universitet,Odontologiska institutionen,Institute of Odontology
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- Gröndahl, Hans-Göran, 1940 (author)
- Gothenburg University,Göteborgs universitet,Odontologiska institutionen,Institute of Odontology
- (creator_code:org_t)
- 1999
- 1999
- English.
- In: Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics. - 1079-2104. ; 88:6, s. 738-44
- Journal article (peer-reviewed)
Abstract
Subject headings
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- OBJECTIVES: The aim of this study was to test the influence of radiation dose on image quality in mandibular preimplant computed tomographic examinations and to compare the quality of computed and conventional spiral tomographic images. STUDY DESIGN: Cross-sectional images were obtained on 17 patients with conventional spiral tomography (Scanora technique) and reformatted computed tomography at 40 and 80 mAs. Observers graded the acceptability of images for implant planning and traced the contour of the mandibular body and canal. RESULTS: Conventional spiral tomographic images scored significantly higher than computed tomographic images whereas mean score differences between computed tomographic techniques were not statistically significant. Anatomic structures, in particular the mandibular canal, were more frequently untraceable in high-dose than in low-dose computed tomography but always traceable in conventional tomograms. CONCLUSION: Conventional spiral tomograms were subjectively preferred over computed tomographic images. For mandibular implant planning, computed tomography examinations can be performed with lower-than-standard mAs. Quantum noise seems to contribute to the visibility of anatomic structures in reformatted computed tomographic images.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Odontologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Dentistry (hsv//eng)
Keyword
- Adult
- Aged
- Dental Implantation
- Female
- Humans
- Male
- Mandible
- radiography
- Middle Aged
- Observer Variation
- Patient Care Planning
- Quality Control
- Radiation Dosage
- Statistics
- Nonparametric
- Tomography
- X-Ray Computed
- instrumentation
- methods
- standards
- statistics & numerical data
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics (Search for host publication in LIBRIS)
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