scholarly journals Incidence of soft tissue calcifications of the head and neck region on maxillofacial cone beam computed tomography.

2011 ◽  
Author(s):  
Adam Wells
Keyword(s):  
Computed Tomography ◽  
Soft Tissue ◽  
Head And Neck ◽  
Cone Beam Computed Tomography ◽  
Neck Region ◽  
Cone Beam ◽  
Head And Neck Region

Image-guided Radiotherapy Based on Kilovoltage Cone-beam Computed Tomography — A Review of Technology and Clinical Outcome

2011 ◽  
Vol 07 (02) ◽  
pp. 121 ◽  
Author(s):  
Matthias Guckenberger ◽  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Neck Region ◽  
The Body ◽  
Cone Beam ◽  
Head And Neck Region ◽  
Image Guided Radiotherapy ◽  
Image Guided ◽  
Precision Radiotherapy ◽  
High Precision Radiotherapy

In this article an overview about the technology and clinical application of gantry-mounted kilovoltage cone-beam computed tomography (CBCT) systems for image-guided high-precision radiotherapy is provided. The emphasis will be on the body sites that are most frequently targeted in daily clinical routine (prostate, lung and head-and-neck region).

scholarly journals Accuracy and Reproducibility of Facial Measurements of Digital Photographs and Wrapped Cone Beam Computed Tomography (CBCT) Photographs

Diagnostics ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 757
Author(s):  
Maged Sultan Alhammadi ◽  
Abeer Abdulkareem Al-mashraqi ◽  
Rayid Hussain Alnami ◽  
Nawaf Mohammad Ashqar ◽  
Omar Hassan Alamir ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Soft Tissue ◽  
Cone Beam Computed Tomography ◽  
High Reliability ◽  
Three Dimensional ◽  
Cone Beam ◽  
Cross Sectional ◽  
Facial Profile ◽  
Digital Photographs ◽  
Gonial Angle

The study sought to assess whether the soft tissue facial profile measurements of direct Cone Beam Computed Tomography (CBCT) and wrapped CBCT images of non-standardized facial photographs are accurate compared to the standardized digital photographs. In this cross-sectional study, 60 patients with an age range of 18–30 years, who were indicated for CBCT, were enrolled. Two facial photographs were taken per patient: standardized and random (non-standardized). The non-standardized ones were wrapped with the CBCT images. The most used soft tissue facial profile landmarks/parameters (linear and angular) were measured on direct soft tissue three-dimensional (3D) images and on the photographs wrapped over the 3D-CBCT images, and then compared to the standardized photographs. The reliability analysis was performed using concordance correlation coefficients (CCC) and depicted graphically using Bland–Altman plots. Most of the linear and angular measurements showed high reliability (0.91 to 0.998). Nevertheless, four soft tissue measurements were unreliable; namely, posterior gonial angle (0.085 and 0.11 for wrapped and direct CBCT soft tissue, respectively), mandibular plane angle (0.006 and 0.0016 for wrapped and direct CBCT soft tissue, respectively), posterior facial height (0.63 and 0.62 for wrapped and direct CBCT soft tissue, respectively) and total soft tissue facial convexity (0.52 for both wrapped and direct CBCT soft tissue, respectively). The soft tissue facial profile measurements from either the direct 3D-CBCT images or the wrapped CBCT images of non-standardized frontal photographs were accurate, and can be used to analyze most of the soft tissue facial profile measurements.

Noma and Necrotizing Fasciitis of the Face and Neck

2021 ◽  
Author(s):  
Lauren E. Miller ◽  
David A. Shaye
Keyword(s):  
Soft Tissue ◽  
Necrotizing Fasciitis ◽  
Head And Neck ◽  
Subcutaneous Tissue ◽  
Neck Region ◽  
Superficial Fascia ◽  
Soft Tissue Infections ◽  
Head And Neck Region ◽  
Necrotizing Soft Tissue Infections ◽  
The Face

AbstractNecrotizing fasciitis (NF) is part of the class of necrotizing soft tissue infections characterized by rapid fascial spread and necrosis of the skin, subcutaneous tissue, and superficial fascia. If left untreated, NF can rapidly deteriorate into multiorgan shock and systemic failure. NF most commonly infects the trunk and lower extremities, although it can sometimes present in the head and neck region. This review provides an overview of NF as it relates specifically to the head and neck region, including its associated clinical features and options for treatment. Noma, a related but relatively unknown disease, is then described along with its relationship with severe poverty.

Ionizing radiation and its considerations in imaging diagnosis: comparison of absorbed dose between cone beam computed tomography and multi-detector computed tomography in the head and neck

2021 ◽  
Author(s):  
P.L.E. Oliveira ◽  
C.R. Starling ◽  
C.L.P. Maurício ◽  
F.R. Guedes ◽  
M.A. Visconti ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Head And Neck ◽  
Cone Beam Computed Tomography ◽  
Absorbed Dose ◽  
Cone Beam ◽  
Thermoluminescent Dosimeters ◽  
Organ Tissue ◽  
The Mean ◽  
Average Adult ◽  
Multi Detector Computed Tomography

Introduction: The objective of this study was to compare the mean absorbed dose in patients undergoing head and neck examinations using two cone beam computed tomography (CBCT, Kodak and i-CAT) and one multi-detector computed tomography (MDCT). Methods: Three thermoluminescent dosimeters (TLDs), calibrated in air kerma, were positioned in 24 regions of the head and neck of a phantom simulating an average adult. The mean absorbed dose (mGy) values in these positions, for different organs and tissues, were obtained using correction factors, considering the ratio between the mass energy absorption coefficients of organ/tissue and air. Comparison between radiation doses in the most radiosensitive regions was done by calculating the ratio of these dose values, with propagated uncertainty. Results: The dose in all regions was significantly higher for MDCT when compared to CBCT. Concerning CBCT equipment, the Kodak device had a higher absorbed dose than the i-CAT for most of the regions tested. The uncertainty of the i-CAT was greater than that of the Kodak. Conclusion: Due to the considerable difference between absorbed doses, emphasizing the higher dose values obtained in MDCT, the dissemination of CBCT application in medicine is recommended, as well as further studies to broaden the criteria for use.

scholarly journals Asymptomatic Presentation of Aggressive Ossifying Fibroma:A Case Report

2011 ◽  
Vol 2011 ◽  
pp. 1-4 ◽  
Author(s):  
Roopashri Rajesh Kashyap ◽  
Gopakumar R. Nair ◽  
Subhas Babu Gogineni
Keyword(s):  
Computed Tomography ◽  
Case Report ◽  
Head And Neck ◽  
Clinical Symptoms ◽  
Neck Region ◽  
Ethmoid Sinus ◽  
Ossifying Fibroma ◽  
Head And Neck Region ◽  
Aggressive Form ◽  
Aggressive Tumors

Ossifying fibromas form a part of the spectrum of fibro-osseous lesions of the jaws. They are rare, benign, nonaggressive tumors that are commonly seen in head and neck region. This paper presents the case of a 40-year-old female patient presented with minimal clinical symptoms, diagnosed to be suffering from aggressive form of ossifying fibroma of maxilla involving the maxillary sinus and ethmoid sinus. This paper emphasizes the importance of computed tomography in diagnosing such unapparent aggressive tumors.

Extranodal natural killer/T-cell lymphoma, nasal type: Clinical and computed tomography findings in the head and neck region

2012 ◽  
Vol 122 (12) ◽  
pp. 2632-2639 ◽  
Author(s):  
Liang-Yueh Hung ◽  
Po-Hung Chang ◽  
Ta-Jen Lee ◽  
Yin-Ping Hsu ◽  
Yi-Wei Chen ◽  
...  
Keyword(s):  
Computed Tomography ◽  
T Cell ◽  
Head And Neck ◽  
Natural Killer ◽  
Cell Lymphoma ◽  
Neck Region ◽  
Head And Neck Region ◽  
Nasal Type ◽  
Natural Killer T Cell ◽  
Killer T Cell
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