Comparison of gray values of cone-beam computed tomography with hounsfield units of multislice computed tomography: An in vitro study
| Autor: | Keerthi Gurushanth, Sanjana Patrick, N Praveen Birur, Shubha Gurudath, A Shubhasini Raghavan |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
medicine.medical_specialty
Cone beam computed tomography Bone density 030218 nuclear medicine & medical imaging Mental foramen 03 medical and health sciences 0302 clinical medicine stomatognathic system Hounsfield scale Medicine In vitro study Multislice General Dentistry Computed tomography Hounsfield units business.industry 030206 dentistry General Medicine Multislice computed tomography cone beam computed tomography lcsh:RK1-715 medicine.anatomical_structure lcsh:Dentistry Cortical bone Radiology Nuclear medicine business field of view |
| Zdroj: | Indian Journal of Dental Research, Vol 28, Iss 1, Pp 66-70 (2017) |
| ISSN: | 1998-3603 0970-9290 |
| Popis: | Purpose: Hounsfield unit (HU) provides a quantitative evaluation of bone density. The assessment of bone density is essential for successful treatment plan. Although, multislice computed tomography (MSCT) is considered as gold standard in evaluating bone density, cone-beam computed tomography (CBCT) is frequently used in dentomaxillofacial imaging due to lower radiation dose, less complex device, and images with satisfactory resolution. Aims and Objectives: The aim of this study is to determine and compare the gray value and HU value of hypodense and hyperdense structures on CBCT and MSCT, respectively. The study also evaluated and compared the gray values in different field of views within CBCT. Materials and Methods: A total of 20 dry human mandibles were obtained. The gray values and HU values of hypodense structures (extraction socket, inferior alveolar canal, and mental foramen) and hyperdense structures (enamel, cancellous, and cortical bone) were evaluated and compared between CBCT and MSCT images, respectively. The obtained data were statistically analyzed. Statistical Analysis: One-way analyses of variance, ANOVA F-test. Results: The gray value for hypodense structures in large volume CBCT scans resembled the HU value. The study showed statistically significant difference (P |
| Databáze: | OpenAIRE |
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