Clinical indications for digital volume tomography in oral and maxillofacial surgery

Ziegler, C.; Woertche, R; Brief, J; Haßfeld, Stefan

doi:10.1038/sj.dmfr.4600680

Cited by 220 publications

(141 citation statements)

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“…Since that time, several additional reports have extolled the low-dose high-resolution properties of CBCT imaging in preoperative characterization of mandibular and orbital floor fractures. [34][35][36] In orbital floor fractures, although CBCT can demonstrate orbital content herniation, it lacks the contrast resolution to differentiate the tissue composition of the herniated materials. 35 The intraoperative uses of C-arm CBCT systems have been evaluated for fractures of the zygomaticomaxillary complex (ZMC), demonstrating the feasibility of CBCT use in surgical navigation, localization of bony fragments, and evaluation of screw anchorage and plate fittings with low levels of metal artifact.…”

Section: Craniofacial Fracturesmentioning

confidence: 99%

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

Miracle¹,

Mukherji²

2009

AJNR Am J Neuroradiol

300

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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Section: Craniofacial Fracturesmentioning

confidence: 99%

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

Miracle¹,

Mukherji²

2009

AJNR Am J Neuroradiol

300

207

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“…Anatomically complex cases, masses, or extensive implant treatments requiring more detailed studies can only be analysed with blade-beam CT scanners, which produce higher-quality images [12] (Fig. 9).…”

Section: Discussionementioning

confidence: 99%

Multidetector CT and Dentascan software: dosimetric evaluation and technique improvement

et al. 2006

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Purpose. The development of new operative techniques in oral and maxillofacial surgery within the last few years has led to an increasing demand for Dentascan examination, also in paediatric patients. It is necessary to modify acquisition parameters to reduce the absorbed dose. The aim of this study was to define a Dentascan protocol in which a reduced X-ray dose could be used. Materials and methods. Dosimeters were applied to the eyes, mouth, parotid glands, thyroid and back of the neck of an anthropomorphic Plexiglas phantom that underwent multidetector computed tomography (MDCT) Dentascan examinations. Both 120kV and 80 kV were used to study the mandibular and maxillary arches. Results. Examinations obtained with the 80 kV protocol showed a ten-fold reduction in the absorbed dose, without affecting image quality. Conclusions. We suggest a Dentascan protocol that reduces the Xray dose administered to the patient while ensuring the same high diagnostic accuracy. Key words

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“…This means that CBCT scanners have the potential to offer additional benefits in hard-tissue visualization of the maxillofacial region and evaluation of skeletal morphology. Earlier studies 2,3,6,8) have shown that CBCT offers great advantages in comparison with conventional CT in depiction of the maxillofacial region, in terms of accuracy, scan time reduction, dose reduction, and convertible field of view (FOV), and so on. However, at the moment such systems also suffer from the disadvantages of being relatively expensive and unreliable in demonstrating soft tissue abnormalities.…”

Section: Introductionmentioning

confidence: 99%

“…A conventional CT scanner acquires sliced-image data with a fan-shaped X-ray beam and rows of detectors. Contiguous cross-sectional images are recon-clinically available 2,3,6,8) . The CBCT scanner can collect volume data by means of a single rotation taking between 9-40 sec due to the use of a cone-shaped X-ray beam and twodimensional detectors.…”

Section: Introductionmentioning

confidence: 99%

Cone-beam CT (CB Throne) Applied to Dentomaxillofacial Region

Yajima

Otonari-Yamamoto

Sano

et al. 2006

Bull. Tokyo Dent. Coll.

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Cone-beam CT (CBCT) systems specifically designed for hard-tissue imaging of the maxillofacial region have recently become commercially available. The newly-developed CBCT system, CB Throne ® (Hitachi Medical Corp., Tokyo), is characterized by a number of features such as low dose, sub-millimeter spatial resolution, and a small footprint. This system has been clinically applied at Chiba Hospital, Tokyo Dental College, since April 2005. This article reports the characteristics of this system, and its diagnostic power for maxillofacial lesions and the pre-operative planning dental implants.

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Clinical indications for digital volume tomography in oral and maxillofacial surgery

Cited by 220 publications

References 0 publications

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

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

Multidetector CT and Dentascan software: dosimetric evaluation and technique improvement

Cone-beam CT (CB Throne) Applied to Dentomaxillofacial Region

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