Effective doses of scout projections in maxillofacial cone beam computed tomography.

IF 3.1 2区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Clinical Oral Investigations Pub Date : 2024-10-05 DOI:10.1007/s00784-024-05971-1

Matheus Barros-Costa, Jack Britten, Colin Jones, Amanda Ramage, Deivi Cascante-Sequeira, Megan Blackburn, Christine Swanson, Gustavo Machado Santaella, William Scarfe, Christiano Oliveira-Santos

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Abstract

Objectives: To assess the effective and organ/tissue equivalent radiation doses of different scout projection protocols in four CBCT units.

Methods: Optically stimulated luminescence dosimeters (OSLD) were placed in reference anatomical locations in the head and neck segments of an anthropomorphic phantom representing an average adult male. Ten repeated exposures were obtained from each of the twelve scout projections studied, acquired from four maxillofacial cone beam computed tomography (CBCT) units (Midmark EIOS, 3D Accuitomo F170, Veraviewepocs 3D R100, and Veraview X800). The effective and organ/tissue equivalent doses were calculated for each protocol.

Results: Effective doses ranged from 0.7 µSv (Accuitomo F170 60 × 60 mm-anterior maxilla) to 6.9 µSv (Midmark 50 × 50 mm-anterior maxilla). The highest organ/tissue equivalent doses were recorded for the oral mucosa and salivary glands; however, the thyroid was the highest contributor to the effective dose, followed by the salivary glands.

Conclusions: Despite some variability among CBCT machines and protocols, the acquisition of scout projections is a low-dose procedure. The use of scout projections to ensure an adequate position of the region of interest within the field of view is highly desirable as they contribute minimally to overall CBCT patient dose.

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颌面部锥形束计算机断层扫描中侦察投影的有效剂量。

目的评估四台 CBCT 设备中不同探查投影方案的有效辐射剂量和器官/组织等效辐射剂量：将光刺激发光剂量计（OSLD）放置在一个拟人化模型的头颈部参考解剖位置，该模型代表一名普通成年男性。从四台颌面锥形束计算机断层扫描（CBCT）设备（Midmark EIOS、3D Accuitomo F170、Veraviewepocs 3D R100 和 Veraview X800）获得的 12 个探查投影中的每个投影重复曝光 10 次。计算了每个方案的有效剂量和器官/组织当量剂量：有效剂量从 0.7 µSv （Accuitomo F170 60 × 60 毫米-上颌骨前部）到 6.9 µSv （Midmark 50 × 50 毫米-上颌骨前部）不等。口腔粘膜和唾液腺的器官/组织当量剂量最高；然而，甲状腺的有效剂量最高，其次是唾液腺：结论：尽管 CBCT 机器和方案之间存在一些差异，但获取探查投影是一种低剂量程序。使用探查投影确保感兴趣区在视野内的适当位置是非常可取的，因为探查投影对 CBCT 患者的总体剂量影响最小。

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

Clinical Oral Investigations 医学-牙科与口腔外科

CiteScore

6.30

自引率

5.90%

发文量

484

审稿时长

3 months

期刊介绍： The journal Clinical Oral Investigations is a multidisciplinary, international forum for publication of research from all fields of oral medicine. The journal publishes original scientific articles and invited reviews which provide up-to-date results of basic and clinical studies in oral and maxillofacial science and medicine. The aim is to clarify the relevance of new results to modern practice, for an international readership. Coverage includes maxillofacial and oral surgery, prosthetics and restorative dentistry, operative dentistry, endodontics, periodontology, orthodontics, dental materials science, clinical trials, epidemiology, pedodontics, oral implant, preventive dentistiry, oral pathology, oral basic sciences and more.