Trabecular bone histomorphometric measurements and contrast-to-noise ratio in CBCT
نویسندگان
چکیده
منابع مشابه
Trabecular bone histomorphometric measurements and contrast-to-noise ratio in CBCT.
OBJECTIVES The aim of this study was to evaluate how imaging parameters at clinical dental CBCT affect the accuracy in quantifying trabecular bone structures, contrast-to-noise ratio (CNR) and radiation dose. METHODS 15 radius samples were examined using CBCT (Accuitomo FPD; J. Morita Mfg., Kyoto, Japan). Nine imaging protocols were used, differing in current, voltage, rotation degree, voxel ...
متن کاملSegmentation of trabecular jaw bone on CBCT and μCT datasets
Aims The term bone quality is used often in a dentomaxillofacial context. It needs to be assessed prior to implant placement, or in the evaluation of disease processes. Nevertheless a clear definition of bone quality is lacking (Ribeiro-Rotta et al 2010). A quantitative evaluation can be done with histomorphometry. This evaluation, however, strongly depends on segmentation performance. The aim ...
متن کاملOn the Definition of Signal-To-Noise Ratio and Contrast-To-Noise Ratio for fMRI Data
Signal-to-noise ratio, the ratio between signal and noise, is a quantity that has been well established for MRI data but is still subject of ongoing debate and confusion when it comes to fMRI data. fMRI data are characterised by small activation fluctuations in a background of noise. Depending on how the signal of interest and the noise are identified, signal-to-noise ratio for fMRI data is rep...
متن کاملHistomorphometric measurements of bone turnover, mineralization, and volume.
A recent Kidney Disease: Improving Global Outcomes report suggested that bone biopsies in patients with chronic kidney disease should be characterized by determining bone turnover, mineralization, and volume. This article focuses on the calculations and interpretation of these measurements. In most cases of renal osteodystrophy, the bone formation rate is roughly similar to the bone resorption ...
متن کاملSignal-to-noise ratio, contrast-to-noise ratio and their trade-offs with resolution in axial-shear strain elastography.
In axial-shear strain elastography, the local axial-shear strain resulting from the application of quasi-static axial compression to an inhomogeneous material is imaged. In this paper, we investigated the image quality of the axial-shear strain estimates in terms of the signal-to-noise ratio (SNR(asse)) and contrast-to-noise ratio (CNR(asse)) using simulations and experiments. Specifically, we ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Dentomaxillofacial Radiology
سال: 2014
ISSN: 0250-832X,1476-542X
DOI: 10.1259/dmfr.20140196