Geometric accuracy of a newly developed cone-beam device for maxillofacial imaging

Mischkowski, Robert A.; Pulsfort, Reinhard; Ritter, Lutz; Neugebauer, Jörg; Brochhagen, Hans-Georg; Keeve, Erwin; Zöller, Joachim E.

doi:10.1016/j.tripleo.2007.02.021

Cited by 173 publications

(110 citation statements)

References 24 publications

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“…This feature contributes to the high diagnostic capacity of CBCT images obtained from high-density dento-maxillofacial structures such as teeth and bone [8] . Whereas medical CT requires multiple rotations entailing high effective radiation doses, with CBCT, a single rotation is sufficient for the acquisition of base images [8,14,15] . All CBCT units provide axial, coronal and sagittal multiplanar reconstructed images without magnification.…”

Section: Advantages Of Cbctmentioning

confidence: 99%

“…Multiplanar image can be thickened by increasing the number of adjacent voxels and it is also possible to apply 3D volume rendering and modeling by use of appropriate software package [8,11] . In comparison to medical CT, CBCT offers lower radiation dose and cost along with smaller space requirement [14] . CBCT has better spatial resolution when compared with medical CT [16,17] ( Table 1).…”

Section: Advantages Of Cbctmentioning

confidence: 99%

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Use of cone beam computed tomography in periodontology

Acar¹

2014

WJR

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Section: Advantages Of Cbctmentioning

confidence: 99%

Section: Advantages Of Cbctmentioning

confidence: 99%

Use of cone beam computed tomography in periodontology

Acar¹

2014

WJR

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“…To date, multiple ex vivo studies have attempted to establish the ability of CBCT images to accurately reproduce the geometric dimensions of the maxillodental structures and the mandible. [22][23][24][25] A relatively low patient dose for dedicated dentomaxillofacial scans is a potentially attractive feature of CBCT imaging. The dosing characteristics of dentomaxillofacial scanners were discussed in Part 1 of this series.…”

Section: Dentomaxillofacial Imagingmentioning

confidence: 99%

“…29,31,32 Several studies have described the 3D geometric accuracy of CBCT imaging in the maxillodental and mandibular regions as well. [22][23][24][25] Examples of CBCT imaging studies for implant planning and visualization of the mandibular canal are presented in Figures 1 and 2 respectively.…”

Section: Implantologymentioning

confidence: 99%

Conebeam CT of the Head and Neck, Part 2: Clinical Applications

Miracle¹,

Mukherji²

2009

AJNR Am J Neuroradiol

301

207

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SUMMARY: Conebeam x-ray CT (CBCT) is being increasingly used for point-of-service head and neck and dentomaxillofacial imaging. This technique provides relatively high isotropic spatial resolution of osseous structures with a reduced radiation dose compared with conventional CT scans. In this second installment in a 2-part review, the clinical applications in the dentomaxillofacial and head and neck regions will be explored, with particular emphasis on diagnostic imaging of the sinuses, temporal bone, and craniofacial structures. Several controversies surrounding the emergence of CBCT technology will also be addressed. C onebeam CT (CBCT) is an advancement in CT imagingthat has begun to emerge as a potentially low-dose crosssectional technique for visualizing bony structures in the head and neck. The physical principles, image quality parameters, and technical limitations relevant to CBCT imaging were discussed in Part 1 of this 2-part series. The second part presented here will highlight the evidence related to CBCT applications in head and neck as well as dentomaxillofacial imaging. Controversial aspects of this technology will also be addressed, including limitations in image quality and its often officebased operational model.CBCT was first adapted for potential clinical use in 1982 at the Mayo Clinic Biodynamics Research Laboratory. 1 Initial interest focused primarily on applications in angiography in which soft-tissue resolution could be sacrificed in favor of high temporal and spatial-resolving capabilities. Since that time, several CBCT systems have been developed for use both in the interventional suite and for general applications in CT angiography. 2,3 Exploration of CBCT technologies for use in radiation therapy guidance began in 1992, 4,5 followed by integration of the first CBCT imaging system into the gantry of a linear accelerator in 1999. 6 The first CBCT system became commercially available for dentomaxillofacial imaging in 2001 (NewTom QR DVT 9000; Quantitative Radiology, Verona, Italy). Comparatively low dosing requirements and a relatively compact design have also led to intense interest in surgical planning and intraoperative CBCT applications, particularly in the head and neck but also in spinal, thoracic, abdominal, and orthopedic procedures. [7][8][9][10][11] Diagnostic applications in CT mammography and head and neck imaging are also under evaluation. 12-14 The technical and clinical considerations pertaining to CBCT imaging in many of these applications have been the subjects of several recent reviews. [15][16][17][18][19] The recent review by Dörfler et al 16 of the neurointerventional applications of CBCT is of particular interest to the field of neuroradiology.The discussion below will focus on the diagnostic and treatment-planning applications of CBCT in dentomaxillofacial and head and neck imaging. Commercially available CBCT systems for dentomaxillofacial imaging include the CB MercuRay and CB Throne (Hitachi Medical, Kashiwi-shi, Chiba-ken, Japan), 3D Accuitomo products (J. Mor...

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“…Several studies have been carried out to determine the accuracy of cone beam CT (CBCT). [1][2][3][4][5][6][7] However, these studies have utilized dry skulls without the soft tissue component. These studies have shown linear measurement to be accurate on CBCT images.…”

Section: Introductionmentioning

confidence: 99%

Accuracy of linear measurement in the Galileos cone beam computed tomography under simulated clinical conditions

Ganguly¹,

Ruprecht²,

Vincent³

et al. 2011

Dentomaxillofacial Radiology

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Objectives: The aim of this study was to determine the geometric accuracy of cone beam CT (CBCT)-based linear measurements of bone height obtained with the Galileos CBCT (Sirona Dental Systems Inc., Bensheim, Hessen, Germany) in the presence of soft tissues. Methods: Six embalmed cadaver heads were imaged with the Galileos CBCT unit subsequent to placement of radiopaque fiduciary markers over the buccal and lingual cortical plates. Electronic linear measurements of bone height were obtained using the Sirona software. Physical measurements were obtained with digital calipers at the same location. This distance was compared on all six specimens bilaterally to determine accuracy of the image measurements. Results: The findings showed no statistically significant difference between the imaging and physical measurements (P . 0.05) as determined by a paired sample t-test. The intraclass correlation was used to measure the intrarater reliability of repeated measures and there was no statistically significant difference between measurements performed at the same location (P . 0.05). Conclusions: The Galileos CBCT image-based linear measurement between anatomical structures within the mandible in the presence of soft tissues is sufficiently accurate for clinical use.

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Geometric accuracy of a newly developed cone-beam device for maxillofacial imaging

Cited by 173 publications

References 24 publications

Use of cone beam computed tomography in periodontology

Use of cone beam computed tomography in periodontology

Conebeam CT of the Head and Neck, Part 2: Clinical Applications

Accuracy of linear measurement in the Galileos cone beam computed tomography under simulated clinical conditions

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