scholarly journals The Intraoperative Use of a Portable Cone-Beam Computed Tomography System for the Diagnosis of Intraperitoneal Bladder Perforation

2021 ◽  
Vol 2021 ◽  
pp. 1-4
Author(s):  
Ankur Choksi ◽  
Benjamin Press ◽  
Cayce Nawaf ◽  
Shannon Longyear ◽  
Marc Ferrante ◽  
...  
Keyword(s):  
Intraoperative Imaging ◽  
Cone Beam Ct ◽  
Bladder Perforation ◽  
Cone Beam ◽  
Ct Scanner ◽  
Contrast Extravasation ◽  
Single Plane ◽  
Radiation Cystitis ◽  
Single View ◽  
Tomography System

Background. Intraoperative imaging for endourologic procedures is generally limited to single-plane fluoroscopic X-ray. The O-arm™ is a mobile cone-bean CT scanner that may have applications in urologic surgeries. Case Presentation. We present a case of an 85-year-old male with radiation cystitis and recurrent gross hematuria who was identified to have a bladder perforation on cystoscopy during emergent clot evacuation. Single-view fluoroscopic evaluation was inconclusive as to whether an intraperitoneal bladder perforation occurred. A portable cone-beam CT scan was used to acquire a 3-D CT cystogram, which demonstrated intraperitoneal contrast extravasation, confirming the diagnosis of an intraperitoneal bladder perforation. Conclusion. We report the first use of a portable cone-beam CT scanner to perform an intraoperative CT cystogram to diagnose an intraperitoneal bladder perforation and guide surgical management.

Technical assessment of a cone-beam CT scanner for otolaryngology imaging: Image quality, dose, and technique protocols

2012 ◽  
Vol 39 (8) ◽  
pp. 4932-4942 ◽  
Author(s):  
J. Xu ◽  
D. D. Reh ◽  
J. P. Carey ◽  
M. Mahesh ◽  
J. H. Siewerdsen
Keyword(s):  
Image Quality ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Ct Scanner ◽  
Technical Assessment

Positional dependence of the CT number with use of a cone-beam CT scanner for an electron density phantom in particle beam therapy

2012 ◽  
Vol 6 (1) ◽  
pp. 241-247 ◽  
Author(s):  
Yohsuke Kusano ◽  
Saki Uesaka ◽  
Kaori Yajima ◽  
Motoki Kumagai ◽  
Hideyuki Mizuno ◽  
...  
Keyword(s):  
Electron Density ◽  
Cone Beam Ct ◽  
Particle Beam ◽  
Cone Beam ◽  
Ct Scanner ◽  
Ct Number ◽  
Particle Beam Therapy

WE-G-110-01: Task-Based Modeling and Optimization of a Dedicated Cone-Beam CT Scanner for Musculoskeletal Imaging

2011 ◽  
Vol 38 (6Part33) ◽  
pp. 3832-3832
Author(s):  
P Prakash ◽  
G Gang ◽  
W Zbijewski ◽  
J Yorkston ◽  
A Machado ◽  
...  
Keyword(s):  
Cone Beam Ct ◽  
Musculoskeletal Imaging ◽  
Cone Beam ◽  
Ct Scanner ◽  
Modeling And Optimization

scholarly journals The dentin thickness remaining in the risk zone of mandibular molars after cervical preflaring with four methods

2016 ◽  
Vol 46 (1) ◽  
pp. 1-6
Author(s):  
Sheila Leite PINTO ◽  
Marília Fagury Videira MARCELIANO-ALVES ◽  
Renata Ximenes LINS ◽  
Ermelindo Antônio RADETIC ◽  
Hélio Pereira LOPES
Keyword(s):  
Cone Beam Ct ◽  
The Other ◽  
Cone Beam ◽  
Thickness Variation ◽  
Ct Scanner ◽  
Risk Area ◽  
Risk Zone ◽  
Mandibular Molars ◽  
Before And After ◽  
Dentin Thickness

Abstract Introduction Cervical preflaring is an important step of the canal system instrumentation, but can lead to excessive enlargement or root perforation. Objective Evaluate the remaining dentin thickness in the mandibular molars of mesial roots using cone beam computed tomography: Gates-Glidden (crown-down); Gates-Glidden (step-back); LA Axxess and Easy Pro-Design. Material and method Were selected 40 lower molars mesial roots, which were scanned in a cone beam CT scanner before and after preparation. Were obtained five sections of the CT images with an interval of 1 mm from the furcation, and measured the thickness variation between the root canal to the root external portion in analysis software. Result The evaluation of the different levels showed no significance within the same group for the Gates-Glidden group. On the other hand, were observed difference for LA Axxess (p=0.002) and Easy Pro-Design (p=0.005). In the intergroup analysis, were observed difference in all levels, especially for Gates-Glidden in the ascendant order (ANOVA and Tukey). Conclusion Within the limitations of these study, is possible to conclude that the protocol with greater wear in the cervical risk area was the Gates-Glidden in step-back sequence, as the other groups were equivalent (p>0.05).

scholarly journals Sentinel lymph node mapping using ICG fluorescence and cone beam CT – a feasibility study in a rabbit model of oral cancer

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Nidal Muhanna ◽  
Harley H. L. Chan ◽  
Catriona M. Douglas ◽  
Michael J. Daly ◽  
Atul Jaidka ◽  
...  
Keyword(s):  
Lymph Node ◽  
Sentinel Lymph Node ◽  
Head And Neck ◽  
Fluorescence Imaging ◽  
Near Infrared ◽  
Intraoperative Imaging ◽  
Cone Beam Ct ◽  
Rabbit Model ◽  
Cone Beam ◽  
Nir Fluorescence

Abstract Background Current sentinel lymph node biopsy (SLNB) techniques, including use of radioisotopes, have disadvantages including the use of a radioactive tracer. Indocyanine green (ICG) based near-infrared (NIR) fluorescence imaging and cone beam CT (CBCT) have advantages for intraoperative use. However, limited literature exists regarding their use in head and neck cancer SLNB. Methods This was a prospective, non-randomized study using a rabbit oral cavity VX2 squamous cell carcinoma model (n = 10) which develops lymph node metastasis. Pre-operatively, images were acquired by MicroCT. During surgery, CBCT and NIR fluorescence imaging of ICG was used to map and guide the SLNB resection. Results Intraoperative use of ICG to guide fluorescence resection resulted in identification of all lymph nodes identified by pre-operative CT. CBCT was useful for near real time intraoperative imaging and 3D reconstruction. Conclusions This pre-clinical study further demonstrates the technical feasibility, limitations and advantages of intraoperative NIR-guided ICG imaging for SLN identification as a complementary method during head and neck surgery.

Design and characterization of a dedicated cone-beam CT scanner for detection of acute intracranial hemorrhage

2016 ◽  
Author(s):  
J. Xu ◽  
A. Sisniega ◽  
W. Zbijewski ◽  
H. Dang ◽  
J. W. Stayman ◽  
...  
Keyword(s):  
Intracranial Hemorrhage ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Ct Scanner
Sign in / Sign up

Export Citation Format

Share Document