相关实验视频
Updated: Jul 12, 2025

06:49
A Standardized Approach to Extra-Oral and Intra-Oral Digital Photography
Published on: July 22, 2022
7.7K
额外口腔咬翅放射学中的辐射剂量与口内咬翅和全景放射学相比
Anne K Dorsey1, André Mol1, Peter Green1
1Division of Diagnostic Sciences, The University of North Carolina at Chapel Hill, Adams School of Dentistry, Chapel Hill, NC, USA.
Oral surgery, oral medicine, oral pathology and oral radiology
|November 1, 2023
概括
外口咬翼 (EOBW) 放射学有效剂量 (E) 根据单位而异. 对儿童来说,Orthophos EOBW可以用矩形聚合代替口内咬翼放射 (IOBW).
科学领域:
- 放射学 放射学是一门学科.
- 医学物理 医学物理
- 牙科成像 牙科成像 牙科成像
背景情况:
- 牙科X射线图的辐射剂量是一个重大问题.
- 额外口腔咬翼放射 (EOBW) 是一种新兴的技术,具有不同的辐射概况.
- 对比EOBW,全景 (PAN) 和口腔内咬翼放射 (IOBW) 剂量对于患者的安全至关重要.
研究的目的:
- 为了比较两个EOBW单位的有效剂量 (E) 和甲状腺等效剂量.
- 为了比较EOBW有效剂量与各自的PAN模式以及IOBW.
- 为了评估结合和甲状腺屏蔽对辐射剂量的影响.
主要方法:
- 使用儿童和成年人形象化幽灵与剂量计.
- 评估了Orthophos SL和Rayscan α+ EOBW单位,以及一个IOBW单位.
- 评估了EOBW甲状腺等效剂量,甲状腺屏蔽和没有屏蔽,以及IOBW的多样化合.
主要成果:
- 对于儿童和成人,Orthophos EOBW的有效剂量 (E) 比Rayscan的有效剂量更低.
- 对IOBW的矩形合并导致较低的E与圆形合并相比.
- 对于Orthophos单位来说,EOBW的有效剂量低于PAN.
- 对儿童和成人来说,IOBW的有效剂量低于Rayscan EOBW.
- 甲状腺屏蔽减少了成人雷射扫描 EOBW 甲状腺相当剂量,但引入了文物.
结论:
- EOBW单元的选择至关重要,因为Orthophos提供的有效剂量远低于Rayscan.
- 对于儿科患者来说,Orthophos EOBW与矩形聚合可能是IOBW的可行的替代品.
- 甲状腺屏蔽可以减少辐射剂量,但可能会损害图像质量.
相关概念视频
Radiological Investigation I: X-ray and CT
249
Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and...
249
X-ray Imaging
5.6K
German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...
5.6K
Radiological Investigation III: Pulmonary Angiogram and PET Scan
97
Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
97
Imaging Studies for Cardiovascular System III: X-Ray
193
The most common cardiovascular diagnostic test is an X-ray. It produces images of the heart, blood vessels, and adjacent structures.
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
193
Biological Effects of Radiation
15.5K
All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they...
15.5K
Radiological Investigation II: MRI and Ventilation Perfusion Scan
131
Description
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
MRI
MRI uses magnetic fields and radiofrequency signals to distinguish between normal and abnormal tissues. This technology provides a more detailed diagnostic image than CT scans, enabling it to characterize pulmonary nodules, stage bronchogenic carcinoma, and evaluate inflammatory activity in...
131

