Results 1 to 10 of about 13,347 (152)

Relationship between Hounsfield Unit in CT Scan and Gray Scale in CBCT

Journal of Dental Research, Dental Clinics, Dental Prospects, 2014
Background and aims. Cone-beam computed tomography (CBCT) is an imaging system which has many advantages over computed tomography (CT). In CT scan, Hounsfield Unit (HU) is proportional to the degree of x-ray attenuation by the tissue.
Tahmineh Razi, Mahdi Niknami, Fakhri Alavi Ghazani   +2 more
doaj   +4 more sources

Comparison of Hounsfield Unit and İntraoperative “GATA Scale” Score to Determine Requirement of DJ Stent Insertion in Ureteral Stone Treatment

Journal of Urological Surgery, 2020
Objective:In this study, we aimed to determine the contribution of hounsfield unit (HU) measurement with non-contrast-enhanced computed tomography to the treatment of a single ureteral stone, and compare the value of HU and intraoperative “GATA scale ...
Caner Ediz, Serkan Akan, Suna Ediz Şahin, Cihan Muhammed Temel, Yunus Emre Kızılkan, Hasan Hüseyin Tavukçu, Ömer Yılmaz   +6 more
doaj   +3 more sources

In vitro Evaluation of the Relationship between Gray Scales in Digital Intraoral Radiographs and Hounsfield Units in CT Scans

Journal of Biomedical Physics and Engineering, 2017
Background: Jaw bone quality plays an essential role in treatment planning and prognosis of dental implants. Regarding several available methods for bone density measurements, they are not routinely used before implant surgery due to hard accessibility ...
Khojastepour L., Mohammadzadeh S., Jazayeri M., Omidi M.   +3 more
doaj   +4 more sources

Use of the Hounsfield unit scale in differentiating transudate and exudate in pleural effusion in the emergency department. [PDF]

Medicine (Baltimore)
Attenuation values in computed tomography (CT) are used as a diagnostic aid in certain clinical conditions. In our study, we investigated the effectiveness of attenuation values, obtained through the noninvasive method of CT, in determining the type of pleural effusions in the emergency department.
Işik Nİ, Özkan E, Uçgun A, Turan ÖF, Dönmez S, Yavuz Y, Katipoğlu B, Beştemir A.   +7 more
europepmc   +4 more sources

Analysis of CBCT Bone Density Using the Hounsfield Scale [PDF]

Prosthesis, 2022
Assessing bone density in prospective dental implant sites is crucial both for choosing the implant type and for planning a drilling procedure that will ensure the implant’s primary stability and osseointegration. This study aimed to investigate possible differences between the bone densities of various edentulous sites in the maxilla and mandible. The
Leonard Morar, Grigore Băciuț, Mihaela Băciuţ, Simion Bran, Horațiu Alexandru Colosi, Avram Manea, Oana Almășan, Cristian Dinu   +7 more
openalex   +2 more sources

Deriving Hounsfield units from the grey scale of a CBCT? [PDF]

Dentomaxillofacial Radiology, 2010
I should like to compliment P Mah, TE Reeves and WD McDavid on their comprehensive paper “Deriving Hounsfield units using grey levels in cone beam computed tomography”, in the September 2010 issue of DMFR.1 As the authors note, there has been a certain criticism of the accuracy of Hounsfield numbers from cone beam CT scanners, but relatively little ...
J.A. Bryant
openalex   +3 more sources

Relationship between Hounsfield unit in CT scan and gray scale in CBCT [PDF]

AIP Conference Proceedings, 2016
Cone-beam computed tomography (CBCT) is an imaging system which has advantages over computed tomography (CT). Recently, CBCT has become widely used for oral and maxillofacial imaging. In CT scan, Hounsfield Unit (HU) is proportional to the degree of x-ray attenuation by the tissue.
Noorshaida Kamaruddin, Zainul Ahmad Rajion, Asilah Yusof, Mohd Ezane Aziz   +3 more
openalex   +2 more sources

Deriving Hounsfield units using grey scale of a CBCT?: author response [PDF]

Dentomaxillofacial Radiology, 2010
We appreciate the reader's interest in our research paper "Deriving Hounsfield units using grey levels in cone beam computed tomography" in the September 2010 issue of DMFR.1 We have subsequently applied this method in a clinical situation and the results will be submitted shortly for publication by the same authors. This should help to explain some of
Pascal Muam Mah
openalex   +2 more sources

Validation of Gray Scale on the C-arm in Correlation with Hounsfield Units on CT

Radiološki vjesnik
Introduction: Hounsfield Units (HU) on CT represent a quantitative measure of X-ray attenuation in tissue – 0 HU is defined for water, and −1000 HU for air. On a 3D C-arm (cone-beam flat-panel detector imaging), the degree of attenuation is displayed by shades of Gray Scale Values (GSV) in the device’s DICOM image.
Branko Kovalisko, Davor Štimac, Frane Mihanović   +2 more
openalex   +3 more sources

Low-Dose CT Quality Assurance at Scale: Automated Detection of Overscanning, Underscanning, and Image Noise [PDF]

Life
Automated quality assurance is essential for low-dose computed tomography (LDCT) lung screening, yet manual checks strain clinical workflows. We present a fully automated artificial intelligence tool that quantifies scan coverage and image noise in LDCT ...
Patrick Wienholt, Alexander Hermans, Robert Siepmann, Christiane Kuhl, Daniel Pinto dos Santos, Sven Nebelung, Daniel Truhn   +6 more
doaj   +2 more sources