scholarly journals Technical assessment of a mobile CT scanner for image‐guided brachytherapy

2019 ◽  
Vol 20 (10) ◽  
pp. 187-200
Author(s):  
Nicole E. Chernavsky ◽  
Marc Morcos ◽  
Pengwei Wu ◽  
Akila N. Viswanathan ◽  
Jeffrey H. Siewerdsen
Keyword(s):  
Ct Scanner ◽  
Image Guided ◽  
Mobile Ct ◽  
Technical Assessment

scholarly journals Experience with a mobile CT scanner as part of an airmobile hospital of the Ministry of Emergencies of Russia in the field conditions of the Far North to combat the outbreak of a new coronavirus infection

2021 ◽  
Vol 25 (3) ◽  
pp. 22-30
Author(s):  
S. S. Aleksanin ◽  
O. A. Krotova ◽  
V. Yu. Rybnikov ◽  
N. V. Nesterenko ◽  
N. M. Garbar
Keyword(s):  
Large Scale ◽  
Construction Site ◽  
Ct Scanner ◽  
Field Hospital ◽  
Emergency Situations ◽  
Far North ◽  
Murmansk Region ◽  
Ct Data ◽  
Mobile Ct ◽  
Pcr Test

Background. Large-scale construction of industrial and transport facilities is underway in the Far North of Russia. The process involves more than 10,000 shift workers, and there was a Covid19 outbreak in this population. In order to contain the outbreak and prevent the spread of infection in this area the Russian Emergencies Ministry deployed an airmobile hospital.Purpose. The purpose is to present an experience of work with the mobile CT scanner as part of an airmobile field hospital deployed in the Far North of Russia to combat the Covid-19 outbreak.Materials and methods. On April 6, 2020, the construction site reported a “zero patient” who sought medical aid; the PCR test showed positive results of coronavirus. In the first half of April, over 300 rotation employees applied for medical care, most of them had a positive PCR test. On April 11, a state of emergency was declared in the construction site and, on April 17, 2020, airmobile hospital started operations. Its mission lasted 54 days. The mobile CT scanner (Brightspeed Elite Mobile, GE) was transported by land. The field hospital closely cooperated with the nearest medical institutions and the regional clinical hospital.Results. During its work the airmobile hospital examined 1,678 rotational workers and 408 employees of the Ministry of Emergency Situations of the Murmansk region, with 2,086 CT scans performed. The average age of the patients was 37.8 years, men predominated. In 91.2% of patients, fever was the first symptom of the disease. Blood saturation results ranged from 92% to 99%. The degree of lung involvement ranged from CT 0 to CT 4. During the work of the airmobile hospital, COVID-19 was diagnosed in 500 people, including 328 cases of mild form, 98 – moderate, 74 – severe, no mortalities.Conclusion. A positive experience of application of the mobile CT scanner as part of the AMH field hospital in unfavorable epidemiological conditions of the Far North of the Russian Federation was obtained. CT plays a key role in early detection of infection, differential diagnosis, and identification of complications. Determination of the severity of the disease based on CT data is crucial for patient routing.

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

scholarly journals Economic Aspects in Mass Screening for Lung Cancer with Mobile CT Scanner.

Haigan ◽  
1999 ◽  
Vol 39 (4) ◽  
pp. 381-388
Author(s):  
Kazuhiro Asakura ◽  
Kazuhisa Hanamura ◽  
Shusuke Sone ◽  
Feng Li ◽  
Masaomi Takizawa
Keyword(s):  
Lung Cancer ◽  
Mass Screening ◽  
Economic Aspects ◽  
Ct Scanner ◽  
Mobile Ct

Intraoperative CT Scanner Combined With Image-Guided Neurosurgery

2015 ◽  
Vol 34 (2) ◽  
pp. 73-79
Author(s):  
Eric P. Sipos ◽  
Jessie Heisey
Keyword(s):  
Ct Scanner ◽  
Intraoperative Ct ◽  
Image Guided

scholarly journals Spinal navigation for posterior instrumentation of C1–2 instability using a mobile intraoperative CT scanner

2017 ◽  
Vol 27 (3) ◽  
pp. 268-275 ◽  
Author(s):  
Marcus Czabanka ◽  
Julien Haemmerli ◽  
Nils Hecht ◽  
Bettina Foehre ◽  
Klaus Arden ◽  
...  
Keyword(s):  
Fracture Dislocation ◽  
Posterior Fixation ◽  
Lateral Mass ◽  
Ct Scanner ◽  
Independent Observer ◽  
Intraoperative Ct ◽  
Type Iii ◽  
Flexion Extension ◽  
Spinal Navigation ◽  
Mobile Ct

OBJECTIVESpinal navigation techniques for surgical fixation of unstable C1–2 pathologies are challenged by complex osseous and neurovascular anatomy, instability of the pathology, and unreliable preoperative registration techniques. An intraoperative CT scanner with autoregistration of C-1 and C-2 promises sufficient accuracy of spinal navigation without the need for further registration procedures. The aim of this study was to analyze the accuracy and reliability of posterior C1–2 fixation using intraoperative mobile CT scanner–guided navigation.METHODSIn the period from July 2014 to February 2016, 10 consecutive patients with instability of C1–2 underwent posterior fixation using C-2 pedicle screws and C-1 lateral mass screws, and 2 patients underwent posterior fixation from C-1 to C-3. Spinal navigation was performed using intraoperative mobile CT. Following navigated screw insertion in C-1 and C-2, intraoperative CT was repeated to check for the accuracy of screw placement. In this study, the accuracy of screw positioning was retrospectively analyzed and graded by an independent observer.RESULTSThe authors retrospectively analyzed the records of 10 females and 2 males, with a mean age of 80.7 ± 4.95 years (range 42–90 years). Unstable pathologies, which were verified by fracture dislocation or by flexion/extension radiographs, included 8 Anderson Type II fractures, 1 unstable Anderson Type III fracture, 1 hangman fracture Levine Effendi Ia, 1 complex hangman-Anderson Type III fracture, and 1 destructive rheumatoid arthritis of C1–2. In 4 patients, critical anatomy was observed: high-riding vertebral artery (3 patients) and arthritis-induced partial osseous destruction of the C-1 lateral mass (1 patient). A total of 48 navigated screws were placed. Correct screw positioning was observed in 47 screws (97.9%). Minor pedicle breach was observed in 1 screw (2.1%). No screw displacement occurred (accuracy rate 97.9%).CONCLUSIONSpinal navigation using intraoperative mobile CT scanning was reliable and safe for posterior fixation in unstable C1–2 pathologies with high accuracy in this patient series.

The Use of Intraoperative Navigation for Percutaneous Procedures at the Skull Base Including a Difficult-to-Access Foramen Ovale

2011 ◽  
Vol 70 (suppl_2) ◽  
pp. ons177-ons180 ◽  
Author(s):  
Bradley N. Bohnstedt ◽  
R. Shane Tubbs ◽  
Aaron A. Cohen-Gadol
Keyword(s):  
Skull Base ◽  
Image Guidance ◽  
Foramen Ovale ◽  
Awake Patient ◽  
Ct Scanner ◽  
Successful Completion ◽  
Image Guided ◽  
Percutaneous Procedures ◽  
Percutaneous Rhizotomy ◽  
Head Clamp

ABSTRACT BACKGROUND: We describe the use of an intraoperative CT scan obtained using the Medtronic O-arm (Littleton, Massachusetts) for image-guided cannulation of the foramen ovale not previously accessible with the use of fluoroscopy alone. Unlike previously described procedures, this technique does not require placement of an invasive head clamp and may be used with an awake patient. OBJECTIVE: To describe the use of intraoperative neuronavigation for accessing skull base foramina and, specifically, cannulating of the foramen ovale during percutaneous rhizotomy procedures using an intraoperative image guidance CT scanner (Medtronic O-arm, Littleton, Massachusetts). METHODS: A noninvasive Landmark Fess Strap attached to a spine reference frame was applied to the heads of 4 patients who harbored a difficult-to-access foramen ovale. An intraoperative HD3D skull base scan using a Medtronic O-arm was obtained, and Synergy Spine software was used to create 3D reconstructions of the skull base. Using image guidance, we navigated the needle to percutaneously access the foramen ovale by the use of a single tract for successful completion of balloon compression of the trigeminal nerve. RESULTS: All 4 patients (3 females and 1 male; ages 65-75) underwent the procedure with no complications. CONCLUSION: Based on our experience, neuronavigation with the use of intraoperative O-arm CT imaging is useful during these cases.

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