Dentale digitale Volumentomographie – Technik und Anwendung

Schulze, Reiner

doi:10.1007/s11838-013-0201-z

Cited by 3 publications

(3 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In 2014, Teixido et al stated that volumetric measurements of the inner ear might be much more accurate when using high-resolution cone-beam computed tomography (CBCT) images with a slice thickness of only 0.1 or 0.2 mm [4]. CBCT represents a powerful diagnostic tool for radiologic examinations of the temporal bone that has increased in popularity [5][6][7][8][9]. Compared with conventional computed tomography (CT), its advantages are a higher spatial resolution of osseous structures and a reduced effective radiation dose due to the fact that only the anatomical region of interest is imaged [5].…”

Section: Introductionmentioning

confidence: 99%

Assessing Inner Ear Volumetric Measurements by Using Three-Dimensional Reconstruction Imaging of High-Resolution Cone-Beam Computed Tomography

Hiller

Nour-Eldin

Gruber‐Rouh

et al. 2020

SN Compr. Clin. Med.

View full text Add to dashboard Cite

The aim of the study was to obtain volumetric data of the components of the inner ear using three-dimensional reconstruction of high-resolution cone-beam computed tomography (CBCT) images. Two hundred three CBCT image series of the temporal bone from 118 anatomically normal patients (55 women and 63 men; mean age: 49.4 ± 20.4 years) with different suspected disorders were included in this study. Normative volumetric measurements of the inner ear, the cochlea, the semicircular canals (SSC), and the vestibule were determined using a semi-automated reconstruction method of the Workstation. Volumetric measurements were successfully completed in all 118 patients. Mean inner ear, cochlear, and vestibule volumes were statistically significantly larger in males than in females on both sides (p < 0.001). Regarding the semicircular canals, no statistically significant (p = 0.053) volume difference was found. The difference between the volumes on both sides was not significant. No correlation between the patient’s age and the volume of the compartments was seen (p > 0.05). There was no significant difference between mean bony inner ear volumes when the clinical diagnoses were compared (p > 0.05 for all clinical diagnoses and volumes). Our study concluded that three-dimensional reconstruction and assessment of the volumetric measurements of the inner ear can be obtained using high-resolution CBCT imaging.

show abstract

Section: Introductionmentioning

confidence: 99%

Assessing Inner Ear Volumetric Measurements by Using Three-Dimensional Reconstruction Imaging of High-Resolution Cone-Beam Computed Tomography

Hiller

Nour-Eldin

Gruber‐Rouh

et al. 2020

SN Compr. Clin. Med.

View full text Add to dashboard Cite

show abstract

“…Its simple construction and easy handling make it accessible not only for hospitals, but also for dental practices. However, the main drawback of cross sectional imaging is the higher radiation dose compared to radiography, even though several studies showed a lower radiation dose for CBCT than for conventional multidetector computed tomography (MDCT) [1,2].This implies that many radiation sensitive organs such as the salivary glands are exposed to the x-ray beam without being depicted and thus with no diagnostic value. Therefore, several studies examined the distribution of organ and effective doses in CBCT, showing that the salivary glands, the remainder tissue and the thyroid are the most exposed organs [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…Cone-beam computed tomography (CBCT) is a modality more and more on the rise in dentomaxillofacial imaging [ 1 ]. Due to its three-dimensional, superimposition-free presentation, it is now often used instead of conventional radiography [ 2 , 3 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of skin doses for cone-beam computed tomography in dentomaxillofacial imaging: A preclinical study

et al. 2021

View full text Add to dashboard Cite

Purpose Evaluation of skin organ doses in six different cone-beam computed tomography scanners (CBCT) dedicated to dentomaxillofacial imaging. Our hypothesis is that the dose varies between different devices, protocols and skin areas. Materials and methods An anthropomorphic adult head and neck phantom was used to which a dosimeter (Waterproof Farmer® Chamber, PTW, Freiburg, Germany) was attached to anatomic landmarks of both parotid glands, both ocular lenses, the thyroid gland and the neurocranium. CBCT examinations were performed on six different CBCT devices dedicated to dentomaxillofacial imaging with standard settings and, if available, also in high dose settings. Measurements were repeated five times each. Results The measured mean skin doses ranged from 0.48 to 2.21 mGy. The comparison of the region based dose evaluation showed a high correlation between the single measurements. Furthermore, the distribution of doses between regions was similar in all devices, except that four devices showed side differences for the dose of the parotid region and one device showed side differences for the lens region. The directly exposed regions, such as the parotid glands, showed significant higher values than the more distant regions like the neurocranium. When comparing examination protocols, a significant difference between the standard dose and the high dose acquisitions could be detected. But also a significant dose difference between the different CBCTs could be shown. 3D Accuitomo 170 (Morita, Osaka, Japan) showed the highest absorbed mean dose value for standard settings with 2.21 mGy, especially at the directly exposed regions and their adjacent organs. The lowest mean value for standard settings was achieved with VGi evo (NewTom, Verona, Italy) with 0.48 mGy. Conclusion Repeated measurements of skin organ doses in six different CBCT scanners using a surface dosimeter showed side differences in distribution of dose in five devices for the parotid and lens region. Additionally, significant dose differences between the devices could be detected. Further studies should be performed to confirm these results.

show abstract

Dentale Röntgendiagnostik mit der Panoramaschichtaufnahme – Technik und typische Bildbefunde

Hingst

Weber

2020

Radiologe

View full text Add to dashboard Cite

Dentale digitale Volumentomographie – Technik und Anwendung

Cited by 3 publications

References 23 publications

Assessing Inner Ear Volumetric Measurements by Using Three-Dimensional Reconstruction Imaging of High-Resolution Cone-Beam Computed Tomography

Assessing Inner Ear Volumetric Measurements by Using Three-Dimensional Reconstruction Imaging of High-Resolution Cone-Beam Computed Tomography

Evaluation of skin doses for cone-beam computed tomography in dentomaxillofacial imaging: A preclinical study

Dentale Röntgendiagnostik mit der Panoramaschichtaufnahme – Technik und typische Bildbefunde

Contact Info

Product

Resources

About