Related Experiment Video
Updated: Jul 5, 2026
07:57
Accuracy in Dental Medicine, A New Way to Measure Trueness and Precision
Published on: April 29, 2014
Geometric accuracy of digital volume tomography and conventional computed tomography
1Department of Oral and Cranio-Maxillofacial Surgery, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany. georg.eggers@med.uni-heidelberg.de
The British Journal of Oral & Maxillofacial Surgery
|May 21, 2008
Summary
Digital volume tomography (DVT) offers comparable spatial accuracy to conventional CT for dental surgery. Its submillimetric geometric accuracy is sufficient for image-guided procedures, despite slight variations at the volume margins.
Area of Science:
- Medical Imaging
- Dental and Maxillofacial Surgery
- Cone Beam Computed Tomography (CBCT)
Background:
- Digital volume tomography (DVT) is an emerging imaging modality based on cone beam computed tomography (CBCT).
- A primary application of DVT is in dental and maxillofacial surgery, necessitating evaluation of its precision.
Purpose of the Study:
- To compare the geometric accuracy of digital volume tomography (DVT) with conventional computed tomography (CT).
- To assess the suitability of DVT for image-guided surgical applications.
Main Methods:
- A calibration cube with a known tube pattern was scanned using both CT and DVT.
- Spatial accuracy was analyzed using software to detect tube intersections and compare them to real positions.
- Deviation calculations were performed to quantify differences between the imaging methods.
Main Results:
- Both CT and DVT demonstrated similar spatial image resolution.
- Digital volume tomography (DVT) exhibited slightly lower spatial accuracy than CT, yet remained within the submillimetric range.
- Accuracy was highest in the center of the volume and decreased towards the margins, without impacting diagnostic quality.
Conclusions:
- The geometric accuracy of digital volume tomography (DVT) is adequate for image-guided surgery in dental and maxillofacial applications.
- While technical image quality shows variations, diagnostic image quality is not compromised.
Related Concept Videos
01:10Computed Tomography
Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
01:27Imaging Studies III: Computed Tomography
DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
01:28Accuracy, limits, and approximation
Accuracy, limits, and approximations are common in many fields, especially in engineering calculations. These concepts are imperative for ensuring that a given value is as close as possible to its true value.
Accuracy is defined as the closeness of the measured value to the true or actual value. In engineering mechanics, repeated measurements are taken during theoretical or experimental analyses to ensure that the result is precise and accurate.
The accuracy of any solution is based on the...
Accuracy is defined as the closeness of the measured value to the true or actual value. In engineering mechanics, repeated measurements are taken during theoretical or experimental analyses to ensure that the result is precise and accurate.
The accuracy of any solution is based on the...