Implant planning and placement using optical scanning and cone beam CT technology

The retrotympanic anatomy is complex and variable but has received little attention in the radiological literature. With advances in CT technology and the application of cone beam CT to temporal bone imaging, there is now a detailed depiction of the retrotympanic bony structures. With the increasing use of endoscopes in middle ear surgery, it is important for the radiologist to appreciate the nomenclature of the retrotympanic compartments in order to aid communication with the surgeon. For instance, in the context of cholesteatoma, clear imaging descriptions of retrotympanic variability and pathological involvement are valuable in pre-operative planning. The endoscopic anatomy has recently been described and the variants classified. The retrotympanum is divided into medial and lateral compartments with multiple described potential sinuses separated by bony crests. This pictorial review will describe the complex anatomy and variants of the retrotympanum. We will describe optimum reformatting techniques to demonstrate the structures of the retrotympanum and illustrate the associated anatomical landmarks and variants with CT. The implications of anatomical variants with regards to otologic surgery will be discussed.

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Improved imaging of temporal bone for planning the access to the stapedius muscle using cone beam CT technology (Dyna CTTM)

10.1055/s-0040-1711163 ◽

2020 ◽

Author(s):

GF Volk ◽

R Aschenbach ◽

M Gadyuchko ◽

T Bitter ◽

S Koscielny ◽

...

Keyword(s):

Temporal Bone ◽

Cone Beam Ct ◽

Cone Beam ◽

Stapedius Muscle ◽

Ct Technology

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O-020 Novel cone beam CT technology improves image quality for stroke assessment: a prospective series

10.1136/neurintsurg-2021-snis.20 ◽

2021 ◽

Author(s):

N Cancelliere ◽

P Nicholson ◽

F Nijnatten ◽

E Hummel ◽

P Withagen ◽

...

Keyword(s):

Image Quality ◽

Cone Beam Ct ◽

Cone Beam ◽

Ct Technology ◽

Stroke Assessment

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Utility of C-Arm CT in Detection Hepatocellular Carcinoma during Trans Arterial Chemoembolization

QJM ◽

10.1093/qjmed/hcaa068.023b ◽

2020 ◽

Vol 113 (Supplement_1) ◽

Author(s):

M S Ghazy ◽

A H Soliman ◽

M H K Abdelmaksoud ◽

N M E Morsy

Keyword(s):

Hepatocellular Carcinoma ◽

Gold Standard ◽

Transcatheter Arterial Chemoembolization ◽

Cone Beam Ct ◽

Clinical History ◽

Cone Beam ◽

Success Rates ◽

Feeding Vessels ◽

Ct Technology ◽

Arterial Chemoembolization

Abstract Background Transcatheter arterial chemoembolization is one of the effective therapeutic options for hepatocellular carcinoma (HCC). Ultraselective chemoembolization is an alternative approach to improve local control, and is associated with a reduced incidence of adverse effects. Objective It was to evaluate the sensitivity of cone beam computed tomography (CBCT) in detecting HCC tumors and their feeding vessels during transarterial chemoembolization (TACE). Patients and Methods All patients were suspected of having or confirmed to have HCC on the basis of clinical history, underlying liver disease and/or viral infection, the diagnosis of HCC was made by imaging findings. Between January 2016 and January 2018, Dyna CT was retrospectively used in 19 consecutive patients with HCC tumor with HCC tumor. Results The detectability of the tumor with DSA obtained at the common, proper, right, or left hepatic artery (i.e., nonselective DSA) and cone-beam CT was compared as taking pre imaging as a gold standard. Tumor stain and feeding branches were evaluated. The detectability of the tumor-feeding branch with non-selective DSA and Dyna CT HA images was compared. Conclusion Tumor detectability on cone-beam CT was significantly greater than on non-selective. Cone beam HA taking pre imaging as a gold standard was (94.4%) and its specificity (71.6%) with accuracy (76.97%). The sensitivity of DSA in detection of additional tumor as taking the pre imaging (CT/MRI) as a gold standard was (88.9%) and its specificity (84.5%) with accuracy (85.53%). Cone-beam CT has satisfactory ability to detect tumors; the detectability of tumor-feeding branches with Dyna CT was significantly higher than that with nonselective DSA (P less than 0.001). We believe the technical success rates of ultraselective transcatheter arterial chemoembolization may be improved by chemoembolization guidance software that uses cone-beam CT technology.

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Detection of hepatocellular carcinoma by CT during arterial portography using a cone-beam CT technology: comparison with conventional CTAP

Abdominal Imaging ◽

10.1007/s00261-007-9254-9 ◽

2008 ◽

Vol 34 (4) ◽

pp. 502-506 ◽

Cited By ~ 37

Author(s):

Shiro Miyayama ◽

Osamu Matsui ◽

Masashi Yamashiro ◽

Yasuji Ryu ◽

Harumi Takata ◽

...

Keyword(s):

Hepatocellular Carcinoma ◽

Cone Beam Ct ◽

Cone Beam ◽

Arterial Portography ◽

Ct During Arterial Portography ◽

Ct Technology ◽

Technology Comparison

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CBCT in Orthodontics: The Wave of Future

The Journal of Contemporary Dental Practice ◽

10.5005/jp-journals-10024-1291 ◽

2013 ◽

Vol 14 (1) ◽

pp. 153-157 ◽

Cited By ~ 13

Author(s):

Lalita G Nanjannawar ◽

Jiwanasha Manish Agrawal ◽

Manish Suresh Agrawal ◽

Anita D Parushetti

Keyword(s):

Treatment Planning ◽

Soft Tissues ◽

Imaging Techniques ◽

Cone Beam Ct ◽

Cone Beam ◽

3D Objects ◽

The Past ◽

Ct Technology ◽

User Friendly ◽

Excellent Tool

ABSTRACT Cone beam computed tomography (CBCT) has probably been one of the most revolutionary innovations in the field of dentistry in the past decade and it provides a novel platform for orthodontic diagnosis and treatment planning. Current imaging techniques are essentially two-dimensional (2D) representations of threedimensional (3D) objects and suffer from several limitations. Hence, fulfillment of ideal imaging goals has been limited. Twodimensional radiographs are insufficient, especially in complex cases like impacted teeth, supernumerary teeth and orthognathic surgeries. CBCT images provide far more detailed information than conventional 2D radiographs and are user friendly. Soft tissues, skull, airway and the dentition can be observed and measured on CBCT images in a 1:1 ratio. Clinical significance CBCT provides an excellent tool for accurate diagnosis, more predictable treatment planning, more efficient patient management and education, improved treatment outcome and patient satisfaction. This article focuses on various applications of cone beam CT technology in orthodontics. How to cite this article Agrawal JM, Agrawal MS, Nanjannawar LG, Parushetti AD. CBCT in Orthodontics: The Wave of Future. J Contemp Dent Pract 2013;14(1):153-157.

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