Erratum: Radiation exposure in spine surgery using an image-guided system based on intraoperative cone-beam computed tomography: analysis of 107 consecutive cases

Object Surgeon and operating room (OR) staff radiation exposure during spinal surgery is a concern, especially with the increasing use of multiplanar fluoroscopy in minimally invasive spinal surgery procedures. Cone beam computed tomography (cbCT)–based, 3D image guidance does not involve the use of active fluoroscopy during instrumentation placement and therefore decreases radiation exposure for the surgeon and OR staff during spinal fusion procedures. However, the radiation scatter of a cbCT device can be similar to that of a standard 64-slice CT scanner and thus could expose the surgeon and OR staff to radiation during image acquisition. The purpose of the present study was to measure radiation exposure at several unshielded locations in the OR when using cbCT in conjunction with 3D image-guided spinal surgery in 25 spinal surgery cases. Methods Five unshielded badge dosimeters were placed at set locations in the OR during 25 spinal surgery cases in which cbCT-based, 3D image guidance was used. The cbCT device (O-ARM) was used in conjunction with the Stealth S7 image-guided platform. The radiology department analyzed the badge dosimeters after completion of the last case. Results Fifty high-definition O-ARM spins were performed in 25 patients for spinal registration and to check instrumentation placement. Image-guided placement of 124 screws from C-2 to the ileum was accomplished without complication. Badge dosimetry analysis revealed minimal radiation exposure for the badges 6 feet from the gantry in the area of the anesthesiology equipment, as well as for the badges located 10–13 feet from the gantry on each side of the room (mean 0.7–3.6 mrem/spin). The greatest radiation exposure occurred on the badge attached to the OR table within the gantry (mean 176.9 mrem/spin), as well as on the control panel adjacent to the gantry (mean 128.0 mrem/spin). Conclusions Radiation scatter from the O-ARM was minimal at various distances outside of and not adjacent to the gantry. Although the average radiation exposure at these locations was low, an earlier study, undertaken in a similar fashion, revealed no radiation exposure when the surgeon stood behind a lead shield. This simple precaution can eliminate the small amount of radiation exposure to OR staff in cases in which the O-ARM is used.

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Percutaneous Image-Guided Intracranial Surgical Tool Placement in a Simulated Brain Tumor Using Flat-Panel Cone-Beam Computed Tomography (FP-CBCT) and Digital Fluoroscopy: A Feasibility Study

Skull Base ◽

10.1055/s-2008-1093129 ◽

2008 ◽

Vol 18 (S 01) ◽

Author(s):

Beverly Aagaard-Kienitz ◽

Brian Nett ◽

Andrew Bauer ◽

Mustafa Baskaya ◽

Guang-Hong Chen

Keyword(s):

Computed Tomography ◽

Brain Tumor ◽

Feasibility Study ◽

Cone Beam Computed Tomography ◽

Cone Beam ◽

Flat Panel ◽

Digital Fluoroscopy ◽

Image Guided ◽

Surgical Tool

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Application of 3D tooth model for monitoring of implant space and inter-root distance without radiographs: a proof of concept study

International Journal of Implant Dentistry ◽

10.1186/s40729-020-00253-3 ◽

2020 ◽

Vol 6 (1) ◽

Author(s):

Kyungmin Lee ◽

Gyu-Hyoung Lee

Keyword(s):

Computed Tomography ◽

Radiation Exposure ◽

Cone Beam Computed Tomography ◽

Alveolar Bone ◽

Tooth Movement ◽

Treatment Evaluation ◽

Cone Beam ◽

Proof Of Concept ◽

Cbct Image ◽

Root Position

Abstract Background Radiographs are integral in evaluating implant space and inter-root distance. The purpose of this report is to introduce a method for evaluating the 3D root position with minimal radiation using a 3D tooth model composed of an intraoral-scanned crown and a cone-beam computed tomography (CBCT)-scanned root. Materials and methods Intraoral scan and CBCT scan of the patient were obtained before treatment. In the CBCT image, tooth segmentation was performed by isolating individual teeth from the maxillary and mandibular alveolar bone using software program. The 3D tooth model was fabricated by combining segmented individual teeth with the intraoral scan. Results A post-treatment intraoral scan was integrated into the tooth model, and the resulting position of the root could be predicted without additional radiographs. It is possible to monitor the root position after a pretreatment CBCT scan using a 3D tooth model without additional radiographs. Conclusion The application of the 3D tooth model benefits the patient by reducing repeated radiation exposure while providing the clinician with a precise treatment evaluation to monitor tooth movement.

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A retrospective cone beam computed tomography analysis of cemento-osseous dysplasia

Journal of Dental Sciences ◽

10.1016/j.jds.2021.03.009 ◽

2021 ◽

Author(s):

Birsay Gumru ◽

Melda Pelin Akkitap ◽

Sevilay Deveci ◽

Ender Idman

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Cone Beam ◽

Osseous Dysplasia ◽

Tomography Analysis

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Cone-beam computed tomography analysis of transverse dental compensation in patients with skeletal Class III malocclusion and facial asymmetry

The Korean Journal of Orthodontics ◽

10.4041/kjod.2018.48.6.357 ◽

2018 ◽

Vol 48 (6) ◽

pp. 357 ◽

Cited By ~ 1

Author(s):

Ji-Yea Lee ◽

Sung-Hoon Han ◽

Hyeong-Seok Ryu ◽

Hee-Min Lee ◽

Sang-Cheol Kim

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Facial Asymmetry ◽

Cone Beam ◽

Class Iii ◽

Class Iii Malocclusion ◽

Skeletal Class ◽

Dental Compensation ◽

Tomography Analysis

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The Role of Cone-Beam Computed Tomography in Diagnostics of Cystic Masses of the Jaw

Medical Visualization ◽

10.24835/1607-0763-2017-3-14-19 ◽

2017 ◽

pp. 14-19

Author(s):

M. A. Batova

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Panoramic Radiography ◽

Cone Beam ◽

Incisive Canal ◽

Computed Tomographic ◽

Cystic Masses ◽

Cbct Analysis ◽

Tomography Analysis

Research objective. The study aimed to evaluate cone-beam computed tomography (CBCT) capabilities in diagnostics of cystic masses of the jaw.Methods. Over a period of 2015–2016 32 patients age 6 to 67 underwent both panoramic tomography and CBCT (using panoramic tomographic scanner STRATO 2000 and cone-beam computed tomographic scanner i-Cat respectively). 47% (n = 15) of the participants were women, 53% (n = 17) – men. Radiation exposure for a single procedure amounts to 0,05 mSv for panoramic tomography, 0,07 mSv for CBCT (FOV =13 cm), 0,06 mSv for CBCT (FOV =8 cm).Results. Comparative analysis of obtained results demonstrates that CBCT showed 54% (n = 27) more cystic masses of the jaws than panoramic radiography could. CBCT additionally showed the following pathologies: granulomas smaller than4 mm diameter – 85% (n = 23), 83% (n = 23) of said granulomas were found on maxilla, radicular cysts of maxilla – 11% (n = 3), incisive canal cyst – 4% (n = 1). Additionally panoramic tomography analysis misdiagnosed 5 granulomas (80% (n = 4) on mandibular premolar and molar areas) that were not found during CBCT analysis.Conclusion. The low effective dose and high informativity of CBCT enables the method to be used instead of intraoral radiography, panoramic tomography and MSCT as a screening procedure in diagnostics of dento-facial system pathologies, including cystic masses of the jaw.

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