کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3167430 1199364 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of tube current on cone-beam computerized tomography image quality for presurgical implant planning in vitro
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی دندانپزشکی، جراحی دهان و پزشکی
پیش نمایش صفحه اول مقاله
Effects of tube current on cone-beam computerized tomography image quality for presurgical implant planning in vitro
چکیده انگلیسی

ObjectiveThe purpose of this study was to evaluate the effect of tube current reduction on the quality of cone-beam computerized tomography (CBCT) images of the maxilla and mandible for presurgical implant planning.Study designSix cadaver heads were imaged with a CBCT (3D Accuitomo) operated at 80 kVp and variable tube current (8, 4, 2, or 1 mA) in full-scan mode. For the posterior region of maxilla and mandible, half-scans were also performed at similar settings. The images were evaluated independently by 5 oral radiologists for 15 anatomic landmarks regarding presurgical implant planning. The quality of images were compared with their respective reference images at 8 mA and ranked on a 4-point rating scale as excellent, good, fair, or nondiagnostic. The scores of all observers were averaged for each landmark at every exposure condition, and Bonferroni test (P < .05) was performed.ResultsThe 4 mA images at full-scan mode could visualize each landmark of maxilla and mandible and were evaluated to be the same or almost equivalent in quality as the 8 mA images. Even 2 mA images in full-scan mode and 4 mA in half-scan mode could be used for implant planning. The 1 mA images were unacceptable owing to the substantial degradation in image quality.ConclusionSignificant dose reduction can be achieved by reducing tube current without substantial loss of image quality for presurgical implant planning in CBCT.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology - Volume 110, Issue 3, September 2010, Pages e29–e33
نویسندگان
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