Evaluation of quality of reformatted images from two cone-beam computed tomographic systems

Schulze, Dirk; Heiland, Max; Blake, Felix; Rother, U; Schmelzle, R.

doi:10.1016/j.jcms.2004.07.004

Cited by 38 publications

(33 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The level of radiation exposure is lower, and the metal artefacts are reduced. 25 CBCT with a limited volume is well suited for the diagnosis of periapical pathology, as used in planning for endodontic surgery. 3,26,27 Limited volume CBCT provides images at high spatial resolution, with low radiation doses and displaying accurate measurements.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

3D dento-maxillary osteolytic lesion and active contour segmentation pilot study in CBCT: semi-automaticvsmanual methods

Vallaeys¹,

Kacem²,

Legoux³

et al. 2015

Dentomaxillofacial Radiology

View full text Add to dashboard Cite

Objectives: This study was designed to evaluate the reliability of a semi-automatic segmentation tool for dento-maxillary osteolytic image analysis compared with manually defined segmentation in CBCT scans. Methods: Five CBCT scans were selected from patients for whom periapical radiolucency images were available. All images were obtained using a ProMax® 3D Mid Planmeca (Planmeca Oy, Helsinki, Finland) and were acquired with 200-mm voxel size. Two clinicians performed the manual segmentations. Four operators applied three different semi-automatic procedures. The volumes of the lesions were measured. An analysis of dispersion was made for each procedure and each case. An ANOVA was used to evaluate the operator effect. Non-paired t-tests were used to compare semi-automatic procedures with the manual procedure. Statistical significance was set at a 5 0.01. Results: The coefficients of variation for the manual procedure were 2.5-3.5% on average. There was no statistical difference between the two operators. The results of manual procedures can be used as a reference. For the semi-automatic procedures, the dispersion around the mean can be elevated depending on the operator and case. ANOVA revealed significant differences between the operators for the three techniques according to cases. Conclusions: Region-based segmentation was only comparable with the manual procedure for delineating a circumscribed osteolytic dento-maxillary lesion. The semi-automatic segmentations tested are interesting but are limited to complex surface structures. A methodology that combines the strengths of both methods could be of interest and should be tested. The improvement in the image analysis that is possible through the segmentation procedure and CBCT image quality could be of value.

show abstract

Section: Discussionmentioning

confidence: 99%

“…26,28 Its disadvantage is the lack of tissue information. 25 Segmentation in CBCT is often more complex because the image is noisier than in MSCT, owing to lower bone signal-to-noise ratio. The image contrast between the tooth root and the alveolar bone is lower in CBCT.…”

Section: Discussionmentioning

confidence: 99%

3D dento-maxillary osteolytic lesion and active contour segmentation pilot study in CBCT: semi-automaticvsmanual methods

Vallaeys¹,

Kacem²,

Legoux³

et al. 2015

Dentomaxillofacial Radiology

View full text Add to dashboard Cite

show abstract

“…When combined with dedicated software packages, it can provide practitioners with a complete solution for demanding tasks (Mozzo et al, 1998;Sukovic, 2003;Schulze et al, 2005).…”

Section: Discussionmentioning

confidence: 99%

“…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. CBCT, also known as true volumetric computed tomography (TVCT) designed for use in dental imaging of osseous structures has been introduced (Rothman, 1998;Mozzo et al, 1998;Schulze et al, 2005). The first available and now well-established CBCT system, the NewTom 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.…”

Section: Introductionmentioning

confidence: 99%

The Dental Volumetric Tomography, RVG, and Conventional Radiography in Determination the Depth of Approximal Caries

Türkmen¹,

Yamaner²,

Topbaşı³

2012

Contemporary Approach to Dental Caries

View full text Add to dashboard Cite

“…Diferentes estruturas anatômicas foram analisadas por dez observadores nas reconstruções multiplanares. Em relação à qualidade de imagem, não houve diferença estatisticamente significativa entre os dois aparelhos, tendo apenas o canal mandibular e o osso trabecular, na reconstrução ortogonal, apresentado uma qualidade de imagem maior no TCFC NewTom 9000, para o qual, no protoloco de aquisição, o voxel foi menor que para o Siremobil Iso-C3D 18 .…”

Section: Revisão De Literaturaunclassified

Influência do tamanho do voxel na qualidade de imagem tomográfica: revisão de literatura

Simões

Campos²

2014

Rev. da Fac. de Odontologia, UPF

View full text Add to dashboard Cite

Objetivo: a menor unidade em espessura na imagem tomográfica é o voxel. Este foi definido antes da aquisição da imagem e pode ser alterado em busca de ima- IntroduçãoA definição de qualidade de imagem para tomografia computadorizada (TC) foi descrita como a capacidade de visibilidade para diagnóstico de estruturas importantes na imagem de TC ou a visualização de estruturas anatômicas relevantes e como a capacidade de detectar achados patológicos 1,2 .Imagens de radiodiagnóstico devem prover informações suficientes para permitir que médicos e cirurgiões-dentistas tomem decisões com um grau razoável de certeza e propiciar dose de radiação mínima para o paciente, respeitando-se o princípio ALARA (as low as reasonably achievable) 3 . A impressão subjetiva de qualidade de imagem depende de diversos fatores, como nitidez de contorno, nível de ruído e contraste entre as estruturas. Outro fator que contribui para a qualidade de imagem é a presença ou a ausência de artefatos, levando em consideração sua intensidade e sua influência na detecção de patologias e estruturas anatômicas relevantes 2 .

show abstract

Evaluation of quality of reformatted images from two cone-beam computed tomographic systems

Cited by 38 publications

References 21 publications

3D dento-maxillary osteolytic lesion and active contour segmentation pilot study in CBCT: semi-automaticvsmanual methods

3D dento-maxillary osteolytic lesion and active contour segmentation pilot study in CBCT: semi-automaticvsmanual methods

The Dental Volumetric Tomography, RVG, and Conventional Radiography in Determination the Depth of Approximal Caries

Influência do tamanho do voxel na qualidade de imagem tomográfica: revisão de literatura

Contact Info

Product

Resources

About