Geometric accuracy of a newly developed cone-beam device for maxillofacial imaging.
OBJECTIVE: The aim of this study was to determine the geometric accuracy of scans obtained with a newly developed cone-beam computed tomography (CBCT) device in comparison with a multidetector row computed tomography (MDCT) scanner. STUDY DESIGN: Cone-beam scans were obtained with the preretail vers...
| Published in: | Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology & Endodontology Vol. 104; no. 4; pp. 551 - 560 |
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| Main Authors: | , , , , , , |
| Format: | research Journal Article |
| Published: |
Elsevier B.V.
Oct2007
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=106010136&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 106010136 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 10792104 1VC jtl: Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology & Endodontology issn: 10792104 maglogo: N pubinfo: dt: Oct2007 vid: 104 iid: 4 pid: 467 pub: Elsevier B.V. place: New York, New York artinfo: ui: 106010136 106010136 2009693105 10.1016/j.tripleo.2007.02.021 NLM17613260 106010136 ppf: 551 ppct: 9 formats: tig: atl: Geometric accuracy of a newly developed cone-beam device for maxillofacial imaging. aug: au: Mischkowski RA Pulsfort R Ritter L Neugebauer J Brochhagen HG Keeve E Zöller JE sug: subj: Equipment and Supplies Radiography, Dental Methods Tomography, X-Ray Computed Methods Bone Density Linear Regression Phantoms, Imaging Reproducibility of Results Skull Radiography Tomography, X-Ray Computed Equipment and Supplies Human ab: OBJECTIVE: The aim of this study was to determine the geometric accuracy of scans obtained with a newly developed cone-beam computed tomography (CBCT) device in comparison with a multidetector row computed tomography (MDCT) scanner. STUDY DESIGN: Cone-beam scans were obtained with the preretail version of a newly developed compact size device with a scan volume of 15 x 15 x 15 cm. Conventional CT scans for comparison were performed with a 6-detector row CT scanner. To determine distance accuracy, 100 measurements were performed on radiopaque markers on a dry human skull. To determine volume accuracy, 25 measurements were carried out on a geometric phantom. Commercially available software was used for three-dimensional visualization and measurements on imaging data. RESULTS: Mean absolute measurement error (AME) for linear distances was 0.26 mm (+/-0.18 mm) for the CBCT device and 0.18 mm (+/-0.17 mm) for the MDCT device (P = .196 in paired t test). The average absolute percentage error (APE) was 0.98% (+/-0.73%) and 1.26% (+/-1.50%), respectively (P = .485 in paired t test). Linear regression analysis showed a positive correlation between AME and distance length (R = 0.628; P = .004) for CBCT-based measurements. Average AME in volume measurements was 1.78 mL (+/-0.99 mL) for the CBCT device and 1.23 mL (+/-0.93 mL) for the MDCT device. The average APE was 6.01% (+/-1.49%) and 4.42% (+/-1.99%), respectively. CONCLUSIONS: The results indicate that the evaluated cone-beam device provides satisfactory information about linear distances and volumes. Multidetector row computed tomography scans proved slightly more accurate in both measurement categories. The difference may be considered as not relevant for the majority of clinical applications. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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