Analysis of the accuracy of linear measurements obtained by cone beam computed tomography (CBCT-NewTom)
Top Cited Papers
- 1 September 2004
- journal article
- research article
- Published by Oxford University Press (OUP) in Dento maxillo facial radiology
- Vol. 33 (5), 291-294
- https://doi.org/10.1259/dmfr/25500850
Abstract
The conical beam computed tomography (CBCT) technique presents an innovation of tomographic imaging systems and subsequent volumetric image reconstruction for dentistry. When compared with other methods of tomographic imaging CBCT is characterized by rapid volumetric image acquisition from a single low radiation dose scan of the patient. The NewTom (NewTom 9000; Quantitative Radiology, Verona, Italy) is an example of such a CBCT machine dedicated to dental and maxillofacial imaging, particularly for surgical and/or prosthetics implant planning in the field of dentistry. The aim of this study was to evaluate the accuracy of the linear measurements obtained in CBCT images using a NewTom. Thirteen measurements were obtained in dry skulls (n = 8) between internal and external anatomical sites using a caliper. These were considered as real measurements. Then the dry skulls were submitted to CBCT imaging examinations. Radiographic distance measurements of the same dry skull anatomical sites were made using the NewTom QR-DVT 9000 software of the 2 mm-CTs axial section images and sagittal or coronal reconstructions. The data were compared by paired Student's t-test. The results showed that the real measurements were always larger than those for the CBCT images, but these differences were only significant for measurements of the internal structures of the skull base. The conclusion of this study is that, although the CBCT image underestimates the real distances between skull sites, differences are only significant for the skull base and therefore it is reliable for linear evaluation measurements of other structures more closely associated with dentomaxillofacial imaging.Keywords
This publication has 10 references indexed in Scilit:
- Amlodipine Fatality in an Infant with Postmortem Blood LevelsJournal of Medical Toxicology, 2012
- Radiation absorbed in maxillofacial imaging with a new dental computed tomography deviceOral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontology, 2003
- Dosimetry of two extraoral direct digital imaging devices: NewTom cone beam CT and Orthophos Plus DS panoramic unitDento maxillo facial radiology, 2003
- A comparison of a new limited cone beam computed tomography machine for dental use with a multidetector row helical CT machineOral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontology, 2003
- Quantitative Evaluation of Acquisition Parameters in Three-Dimensional Imaging with Multidetector Computed Tomography Using Human Skull PhantomJournal of Digital Imaging, 2002
- Clinical indications for digital volume tomography in oral and maxillofacial surgery.Dento maxillo facial radiology, 2002
- A new volumetric CT machine for dental imaging based on the cone-beam technique: preliminary resultsEuropean Radiology, 1998
- Quantitative analysis of spiral computed tomography for craniofacial clinical applications.Published by Cold Spring Harbor Laboratory ,1998
- Three-dimensional dental imaging by spiral CT: A progress reportOral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontology, 1997
- Cone-beam CT for radiotherapy applicationsPhysics in Medicine & Biology, 1995