Voxel Size and Field of View Influence on Periodontal Bone Assessment Using Four CBCT Systems: An Experimental Ex Vivo Analysis.

IF 2.2 4区医学 Q2 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Tomography Pub Date : 2025-06-25 DOI:10.3390/tomography11070074

Victória Geisa Brito de Oliveira, Polyane Mazucatto Queiroz, Alessandra Rocha Simões, Mônica Ghislaine Oliveira Alves, Maria Aparecida Neves Jardini, André Luiz Ferreira Costa, Sérgio Lucio Pereira de Castro Lopes

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引用次数: 0

Abstract

Objective: This ex vivo study aimed to evaluate the influence of different acquisition protocols, combining voxel size and field of view (FOV), across four cone-beam computed tomography (CBCT) systems, on the accuracy of alveolar bone level measurements for periodontal assessment.

Materials and methods: A dry human mandible was used, with standardized radiopaque markers placed on the cementoenamel junction (CEJ) of the buccal-mesial and buccal-distal aspects of teeth 34 and 43. CBCT scans were performed using four systems-Veraview^® X800, OP300 Pro^®, I-CAT Next Generation^®, and Orthophos XG^®-applying various combinations of field of view (FOV) and voxel resolution available in each device. Reference measurements were obtained in situ using a digital caliper. CBCT images were exported in DICOM format and analyzed with OnDemand3D software (version 4.6) to obtain paracoronal sections. Linear measurements from the CEJ to the alveolar crest were recorded in triplicate and compared to the gold standard using ANOVA and the Dunnett test (α = 0.05).

Results: Protocols with smaller voxel sizes and limited FOVs generally yielded measurements closer to the gold standard. However, some larger-FOV protocols with intermediate voxel sizes also achieved comparable accuracy. Among the systems, the I-CAT showed lower agreement within in situ measurements, while others demonstrated reliable performance depending on the acquisition parameters.

Conclusions: The findings suggest that CBCT protocols with smaller voxel sizes and reduced FOVs can enhance measurement accuracy in periodontal bone assessments. Nevertheless, intermediate protocols may offer a balance between diagnostic quality and radiation exposure, aligning with the ALADA principle. This study reinforces the need for standardized acquisition parameters tailored to periodontal imaging.

Abstract Image

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体素大小和视野对四种CBCT系统牙周骨评估的影响：实验离体分析。

目的：本体外研究旨在评估不同采集方案，结合体素大小和视野（FOV），通过四种锥形束计算机断层扫描（CBCT）系统，对牙周评估中牙槽骨水平测量准确性的影响。材料和方法：使用干燥的人类下颌骨，将标准化的不透射线标记放置在牙齿34和43的颊-中、颊-远端牙釉质交界处（CEJ）。CBCT扫描使用四个系统- veraview®X800， OP300 Pro®，I-CAT Next Generation®和orthopos XG®-应用每个设备中可用的各种视场（FOV）和体素分辨率组合进行。使用数字卡尺在现场获得参考测量值。CBCT图像以DICOM格式导出，使用OnDemand3D软件（4.6版）进行分析，获得冠状面切片。从CEJ到肺泡嵴的线性测量记录为3个重复，并使用方差分析和Dunnett检验与金标准进行比较（α = 0.05）。结果：较小体素尺寸和有限fov的方案通常产生更接近金标准的测量值。然而，一些具有中等体素大小的大视场协议也达到了相当的精度。在这些系统中，I-CAT在现场测量中表现出较低的一致性，而其他系统则根据采集参数表现出可靠的性能。结论：研究结果表明，较小体素尺寸和减小视场的CBCT方案可以提高牙周骨评估的测量准确性。然而，中间协议可能提供诊断质量和辐射暴露之间的平衡，与ALADA原则一致。这项研究强调了为牙周成像量身定制标准化采集参数的必要性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Tomography Medicine-Radiology, Nuclear Medicine and Imaging

CiteScore

2.70

自引率

10.50%

发文量

222

期刊介绍： TomographyTM publishes basic (technical and pre-clinical) and clinical scientific articles which involve the advancement of imaging technologies. Tomography encompasses studies that use single or multiple imaging modalities including for example CT, US, PET, SPECT, MR and hyperpolarization technologies, as well as optical modalities (i.e. bioluminescence, photoacoustic, endomicroscopy, fiber optic imaging and optical computed tomography) in basic sciences, engineering, preclinical and clinical medicine. Tomography also welcomes studies involving exploration and refinement of contrast mechanisms and image-derived metrics within and across modalities toward the development of novel imaging probes for image-based feedback and intervention. The use of imaging in biology and medicine provides unparalleled opportunities to noninvasively interrogate tissues to obtain real-time dynamic and quantitative information required for diagnosis and response to interventions and to follow evolving pathological conditions. As multi-modal studies and the complexities of imaging technologies themselves are ever increasing to provide advanced information to scientists and clinicians. Tomography provides a unique publication venue allowing investigators the opportunity to more precisely communicate integrated findings related to the diverse and heterogeneous features associated with underlying anatomical, physiological, functional, metabolic and molecular genetic activities of normal and diseased tissue. Thus Tomography publishes peer-reviewed articles which involve the broad use of imaging of any tissue and disease type including both preclinical and clinical investigations. In addition, hardware/software along with chemical and molecular probe advances are welcome as they are deemed to significantly contribute towards the long-term goal of improving the overall impact of imaging on scientific and clinical discovery.