Optimization of X-ray Investigations in Dentistry Using Optical Coherence Tomography

Autor: Adrian Gh. Podoleanu, Adrian Bradu, Virgil-Florin Duma, George Dobre, Ralph Alexandru Erdelyi, Cosmin Sinescu
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Cone beam computed tomography
TA1520
Computer science
Radiography
02 engineering and technology
TP1-1185
01 natural sciences
Biochemistry
Article
Analytical Chemistry
010309 optics
Imaging
Three-Dimensional
Optical coherence tomography
0103 physical sciences
medicine
Calibration
Humans
dental imaging
Optical Coherence Tomography (OCT)
QC355
Electrical and Electronic Engineering
Medical diagnosis
Instrumentation
Image resolution
medicine.diagnostic_test
business.industry
Phantoms
Imaging
Chemical technology
X-Rays
Resolution (electron density)
three-dimensional (3D) Cone Beam Computed Tomography (CBCT)
X-ray
Cone-Beam Computed Tomography
021001 nanoscience & nanotechnology
image characteristics
Atomic and Molecular Physics
and Optics
Dentistry
0210 nano-technology
business
radiation dose
Tomography
Optical Coherence
radiography
Biomedical engineering
Zdroj: Sensors (Basel, Switzerland)
Sensors
Volume 21
Issue 13
Sensors, Vol 21, Iss 4554, p 4554 (2021)
ISSN: 1424-8220
Popis: The most common imaging technique for dental diagnoses and treatment monitoring is\ud X-ray imaging, which evolved from the first intraoral radiographs to high-quality three-dimensional\ud (3D) Cone Beam Computed Tomography (CBCT). Other imaging techniques have shown potential,\ud such as Optical Coherence Tomography (OCT).We have recently reported on the boundaries of these\ud two types of techniques, regarding. the dental fields where each one is more appropriate or where\ud they should be both used. The aim of the present study is to explore the unique capabilities of the\ud OCT technique to optimize X-ray units imaging (i.e., in terms of image resolution, radiation dose,\ud or contrast). Two types of commercially available and widely used X-ray units are considered. To\ud adjust their parameters, a protocol is developed to employ OCT images of dental conditions that\ud are documented on high (i.e., less than 10 �m) resolution OCT images (both B-scans/cross sections\ud and 3D reconstructions) but are hardly identified on the 200 to 75 �m resolution panoramic or CBCT\ud radiographs. The optimized calibration of the X-ray unit includes choosing appropriate values for\ud the anode voltage and current intensity of the X-ray tube, as well as the patient’s positioning, in order\ud to reach the highest possible X-rays resolution at a radiation dose that is safe for the patient. The\ud optimization protocol is developed in vitro on OCT images of extracted teeth and is further applied\ud in vivo for each type of dental investigation. Optimized radiographic results are compared with\ud un-optimized previously performed radiographs. Also, we show that OCT can permit a rigorous\ud comparison between two (types of) X-ray units. In conclusion, high-quality dental images are possible\ud using low radiation doses if an optimized protocol, developed using OCT, is applied for each type of\ud dental investigation. Also, there are situations when the X-ray technology has drawbacks for dental\ud diagnosis or treatment assessment. In such situations, OCT proves capable to provide qualitative\ud images.
Databáze: OpenAIRE
Externí odkaz: