scholarly journals Intraoperative cone-beam computed tomography contributes to avoiding hypoglossal nerve palsy during transvenous embolization for dural arteriovenous fistula of the anterior condylar confluence

2016 ◽  
Vol 22 (5) ◽  
pp. 584-589 ◽  
Author(s):  
Akitake Okamura ◽  
Mitsuo Nakaoka ◽  
Naohiko Ohbayashi ◽  
Kaita Yahara ◽  
Shinya Nabika
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Nerve Palsy ◽  
Dural Arteriovenous Fistula ◽  
Hypoglossal Nerve ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Transvenous Embolization ◽  
Hypoglossal Nerve Palsy ◽  
Hypoglossal Canal

Background Dural arteriovenous fistula of the anterior condylar confluence (ACC-DAVF) is a rare subtype of DAVFs that occurs around the hypoglossal canal. Transvenous embolization (TVE) with coils has been performed for most ACC-DAVFs with a high clinical cure rate. However, some reports call attention to hypoglossal nerve palsy associated with TVE due to coil mass compression of the hypoglossal nerve caused by coil deviation from the ACC to the anterior condylar vein (ACV). Herein, we report a case of ACC-DAVF in which an intraoperative cone-beam computed tomography (CT) contributed to avoiding hypoglossal nerve palsy. Case presentation A 74-year-old man presented with left pulse-synchronous tinnitus. An angiography detected left ACC-DAVF mainly supplied by the left ascending pharyngeal artery and mainly drained through the ACV. The two fistulous points were medial side of the ACC and the venous pouch just cranial of the ACC. We performed TVE detecting the fistulous points by contralateral external carotid angiography (ECAG). The diseased venous pouch and ACC were packed with seven coils but a slight remnant of the DAVF was recognized. Because a cone-beam CT revealed that the coil mass was localized in the lateral lower clivus osseous without deviation to the hypoglossal canal, we finished TVE to avoid hypoglossal nerve palsy. Postoperatively, no complication was observed. No recurrence of symptoms or imaging findings were detected during a five-month follow-up period. Conclusion An intraoperative cone-beam CT contributed to avoiding hypoglossal nerve palsy by estimating the relationship between the coil mass and the hypoglossal canal during TVE of ACC-DAVF.

scholarly journals Isolated Hypoglossal Nerve Palsy Due to Endovascular Treatment of a Dural Arteriovenous Fistula with Onyx-18

2010 ◽  
Vol 16 (3) ◽  
pp. 286-289 ◽  
Author(s):  
W. Pei ◽  
S. Huai-Zhang ◽  
X. Shan-Cai ◽  
G. Cheng ◽  
Z. Di
Keyword(s):  
Endovascular Treatment ◽  
Arteriovenous Fistula ◽  
Nerve Palsy ◽  
Dural Arteriovenous Fistula ◽  
Hypoglossal Nerve ◽  
Transvenous Embolization ◽  
Prednisolone Therapy ◽  
Hypoglossal Nerve Palsy ◽  
Hypoglossal Canal ◽  
First Case

We describe a patient with dural arteriovenous fistula (DAVF) treated with Onyx-18 who developed isolated hypoglossal nerve palsy. This is the first case of isolated hypoglossal nerve palsy caused by Onyx-18 embolization. This complication suggests that over embolization with Onyx-18 in the treatment of hypoglossal canal DAVFs should be avoided, and transvenous embolization may be safer. Furthermore, prednisolone therapy should be carried out in the prophase of nerve palsy.

Efficacy of Cone Beam Computed Tomography in Treating Cavernous Sinus Dural Arteriovenous Fistula

2018 ◽  
Vol 109 ◽  
pp. 328-332 ◽  
Author(s):  
Keisuke Kadooka ◽  
Michihiro Tanaka ◽  
Yoshinori Sakata ◽  
Minoru Ideguchi ◽  
Maki Inaba ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Arteriovenous Fistula ◽  
Cavernous Sinus ◽  
Cone Beam Computed Tomography ◽  
Dural Arteriovenous Fistula ◽  
Cone Beam

Accuracy of Cone Beam Computed Tomography in Determining the Location of the Genial Tubercle

2007 ◽  
Vol 137 (1) ◽  
pp. 115-118 ◽  
Author(s):  
Elizabeth M. Hueman ◽  
Marcel E. Noujeim ◽  
Robert P. Langlais ◽  
Thomas J. Prihoda ◽  
Frank R. Miller
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Cone Beam Ct ◽  
Cadaver Study ◽  
Cone Beam ◽  
Radiographic Technique ◽  
Significant Difference ◽  
Operative Planning ◽  
Inferior Border ◽  
Genial Tubercle

OBJECTIVE: To determine the accuracy of cone beam computed tomography (CT) to predict the location of the genial tubercle. STUDY DESIGN AND SETTING: Cadaver study for anatomic analysis of 17 adult human cadaver heads. Each skull/cadaver head underwent radiographic imaging with cone beam CT and cadaver dissection. Measurements, including mandibular height (MH), genial tubercle width (GTW), genial tubercle height (GTH), distance from inferior border of mandible to genial tubercle (IBM/GT), and mandibular thickness (MT) were recorded. RESULTS: Statistical analysis with paired t test showed no significant difference between cadaver dissections versus cone beam measurements. Ninety-five percent confidence intervals (CI) were as follows: GTW (−0.2 to 1.0), GTH (−0.1 to 0.9), distance IBM/GT (−0.8 to 5.0), MH (−1.3 to −2.6), and MT (−0.1 to 0.3). CONCLUSION: These results show the accuracy of the 3D cone beam CT in the anatomic location of the genial tubercle. SIGNIFICANCE: This radiographic technique may prove useful in pre-operative planning for the mandibular osteotomy in genioglossus advancement procedures.

scholarly journals Reliability and Reproducibility of Linear Measurements of Alveolar Ridges Using Cone-beam CT Made by Radiologists and Periodontists

2018 ◽  
Vol 7 (2) ◽  
pp. 35-39
Author(s):  
Yaser Safi ◽  
Mahdi Kadkhodazadeh ◽  
Azadeh Esmaeil Nejad ◽  
Zahra Vasegh ◽  
Reza Amid ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Cone Beam Ct ◽  
Correlation Coefficients ◽  
Cone Beam ◽  
Alveolar Ridge ◽  
Linear Measurements ◽  
Intra Class Correlation ◽  
Measurement Selection ◽  
Selection Of

Background and aims. The aim of this study was to evaluate the intra- and inter-examiner reliability and reproducibility of linear measurements on cone-beam computed tomography (CBCT) images made by calibrated radiologists and periodontists. Materials and methods. The alveolar ridge dimensions were measured on selected CBCT images by two calibrated radiologists and two periodontists. Intra- and inter-examiner reliability was evaluated by intra-rater and intra-class correlation coefficients (ICCs). Results. Intra- and inter-examiners ICCs obtained with the different methods showed almost perfect matches. The results demonstrated high examiner reproducibility for linear parameters of alveolar ridges on CBCT images in presurgical implant site assessments. Conclusion. The alveolar ridge dimensions provided by the radiologists might be useful for the periodontists. The measurements with small differences were related to the experience and skills of the examiner, inclination measurement, selection of the exact level of the alveolar crest and the ability to detect the exact anatomic borders on CBCT images.

Cone Beam CT equipment compared: PedCat, Planmed CT and CARESTREAM OnSight 3D Extremity System

2020 ◽  
Author(s):  
Sandu Elena Cerasela ◽  
Caravaggi Paolo ◽  
Durante Stefano
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Cone Beam Computed Tomography ◽  
Low Dose ◽  
3D Visualization ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Foot And Ankle ◽  
Advantages And Disadvantages ◽  
Volumetric Images

The purpose of this article is to compare three Cone Beam CT equipment used for 3D visualization of the foot and ankle, highlighting the advantages and disadvantages of each machine. Cone Beam Computed Tomography provides high resolution (3D) volumetric images with a particularly low dose.

Successful conservative treatment of an intracranial pneumatocele with post-traumatic hypoglossal nerve palsy secondary to diffuse temporal bone pneumocele: case report and review of the literature

2017 ◽  
Vol 131 (2) ◽  
pp. 181-184 ◽  
Author(s):  
M A Taube ◽  
G M Potter ◽  
S K Lloyd ◽  
S R Freeman
Keyword(s):  
Case Report ◽  
Temporal Bone ◽  
Nerve Palsy ◽  
Soft Tissues ◽  
Hypoglossal Nerve ◽  
Management Options ◽  
Tension Pneumocephalus ◽  
Hypoglossal Nerve Palsy ◽  
Hypoglossal Canal ◽  
Slow Expansion

AbstractBackground:A pneumocele occurs when an aerated cranial cavity pathologically expands; a pneumatocele occurs when air extends from an aerated cavity into adjacent soft tissues forming a secondary cavity. Both pathologies are extremely rare with relation to the mastoid. This paper describes a case of a mastoid pneumocele that caused hypoglossal nerve palsy and an intracranial pneumatocele.Case report:A 46-year-old man presented, following minor head trauma, with hypoglossal nerve palsy secondary to a fracture through the hypoglossal canal. The fracture occurred as a result of a diffuse temporal bone pneumocele involving bone on both sides of the hypoglossal canal. Further slow expansion of the mastoid pneumocele led to a secondary middle fossa pneumatocele. The patient refused treatment and so has been managed conservatively for more than five years, and he remains well.Conclusion:While most patients with otogenic pneumatoceles have presented acutely in extremis secondary to tension pneumocephalus, our patient has remained largely asymptomatic. Aetiology, clinical features and management options of temporal bone pneumoceles and otogenic pneumatoceles are reviewed.

Alternative route to a hypoglossal canal dural arteriovenous fistula in case of failed jugular vein approach

2020 ◽  
pp. 159101992096119
Author(s):  
Rasmus Holmboe Dahl ◽  
Alessandra Biondi ◽  
Fortunato Di Caterino ◽  
Giovanni Vitale ◽  
Lars Poulsgaard ◽  
...  
Keyword(s):  
Nerve Palsy ◽  
Hypoglossal Nerve ◽  
Jugular Vein ◽  
Complete Regression ◽  
Unsuccessful Attempt ◽  
Hypoglossal Nerve Palsy ◽  
Hypoglossal Canal ◽  
Arteriovenous Fistulas ◽  
Vein Access ◽  
Alternative Routes

Hypoglossal canal dural arteriovenous fistulas (HC-DAVF) involve the anterior condylar vein (ACV) and anterior condylar confluence (ACC). They often present with tinnitus, bruit, and hypoglossal nerve palsy. The most common treatment in HC-DAVFs is transvenous embolization using coils and the most direct transvenous route is the trans-internal jugular vein access. When this approach is not feasible, a treatment attempt is possible through alternative routes. We report 2 patients with DAVFs involving the anterior condylar confluence. The first patient presented with pulsatile tinnitus and hypoglossal nerve palsy, and was treated by a standard transjugular approach. The second patient presented with pulse-synchronous bruit. Following an unsuccessful attempt of the transjugular approach, the fistulous point was reached via the deep cervical vein and complete occlusion was achieved by coil deployment. Both patients had complete regression of symptoms. Endovascular therapy is the elective treatment for HC-DAVFs and the transjugular approach is the most commonly used. The deep cervical vein (DCV) can be an alternative transvenous route when the transjugular approach fails.

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