Radiation dose reduction in computer assisted navigation for functional endoscopic sinus surgery, cadaver head experiments and clinical implementation

2010 ◽  
Vol 48 (3) ◽  
Author(s):  
P. Dubach
2008 ◽  
Vol 30 (3) ◽  
pp. 617-622 ◽  
Author(s):  
C.B. Nauer ◽  
A. Eichenberger ◽  
P. Dubach ◽  
J. Gralla ◽  
M. Caversaccio

2002 ◽  
Vol 127 (6) ◽  
pp. 549-557 ◽  
Author(s):  
Ivica Klapan ◽  
Ljubimko Šimičić ◽  
Ranko Rišavi ◽  
Nada Bešenski ◽  
Karlo Pasarić ◽  
...  

One of the main objectives of our 3-dimensional (3D) computer-assisted functional endoscopic sinus surgery was to design a computer-assisted 3D approach to the presurgical planning, intraoperative guidance, and postoperative analysis of the anatomic regions of the nose and paranasal sinuses. Such an extremely powerful approach should allow better insight into the operating field, thereby significantly increasing the safety of the procedure. The last step to implementing the technology in the operating room was to connect the computer workstations and video equipment to remote locations by using a high-speed, wide-bandwidth computer network. During patient preparation, the surgeon in the operating room consulted remote experienced and skillful surgeons by viewing CT images and 3D models on computer workstations. The surgeon and consultants used software for CT image previews and 3D model manipulations on top of collaboration tools to define the pathosis, produce an optimal path to the pathosis, and decide how to perform the real surgical procedure. With tele-flythrough or tele-virtual endoscopy rendered through the use of 3D models, both surgeons can preview all the characteristics of the region (ie, anatomy, pathosis) and so predict and determine the next steps of the operation. This ensures greater safety thanks to the operation guidance and reduces the possibility of intraoperative error. The duration of the teleconsultation is thus shortened, which may prove the greatest benefit of tele-3D computer-assisted surgery. If this method were used, clinical institutions would spend less money for telesurgical consultation.


2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Yang Yang ◽  
Yuling Li ◽  
Haibin Zhang ◽  
Yong Xu ◽  
Binquan Wang

Abstract Background Functional endoscopic sinus surgery (FESS) is required to minimize bleeding to maintain a clear operative field during surgery, so it is important to preoperative anti-anxiety and stable hemodynamics. Initial evidence suggests cognitive behavioral therapy (CBT) is effective to minimize surgery-related stress and to speed up recovery. The study aimed to evaluate the efficacy of a newly developed computer-assisted CBT (cCBT) program on surgery-related psychobiological responses in patients undergoing FESS. Methods Participants were allocated to a CCBT group (cCBT; n = 50) or a UC group (usual care; n = 50) by random number table. The State Anxiety Inventory (SAI), Patients Health Questionnaire-9 (PHQ-9), Athens Insomnia Scale (AIS), systolic blood pressure (SBP), diastolic blood pressure (DBP), and heart rate (HR) were assessed before intervention (T1), at 1 h before operation (T2), at postoperative 48 h (T3), and 96 h (T4: after intervention completed) respectively. The stress hormone was assayed at T1 and T2. The duration of surgery, anesthesia, and post-anesthesia care unit (PACU) were recorded. A satisfaction survey about nursing services was completed by participants before discharge. Results Compared to the UC group, the SAI scores at T2 and the AIS scores at T3 were lower in the CCBT group (p < 0.01 and p = 0.002). The positive rate of participants who were moderate and severe anxiety (SAI score > 37) at T2 were lower (72% vs. 88%, p = 0.04); the cortisol levels, SBP, DBP, and HR at T2 in the CCBT group were lower (p = 0.019 and all p < 0.01); the duration of anesthesia and PACU was shorter (p = 0.001 and p < 0.01); the CCBT group showed higher satisfaction scores. Conclusion The newly developed cCBT program was an effective non-pharmacological adjunctive treatment for improving the surgery-related psychosomatic responses and perioperative outcomes. Trial registration The study was registered with the Chinese Clinical Trial Registry (ChiCTR1900025994) on 17 September 2019.


2020 ◽  
Author(s):  
Yang Yang ◽  
Yuling Li ◽  
Haibin Zhang ◽  
Yong Xu ◽  
Binquan Wang

Abstract BackgroundPrevious reports have shown computer-assisted cognitive behavioral therapy (CCBT) could improve mood and sleep for chronic health conditions and some anesthetics can help reduce preoperative anxiety, stabilize hemodynamics and lessen hormone response. But it is unclear whether CCBT could help adults with short-lived acute stressor (e.g. surgery) to experience similar responses.ObjectiveThis study aimed to assess the effects of CCBT on surgery-related physiological and psychological indices (mood, insomnia, vital signs and stress hormone) in patients undergoing functional endoscopic sinus surgery (FESS) during the perioperative period. MethodsParticipants were randomly assigned to a usual care (UC: disease care and psychological care) group (n = 50) or a computer-assisted cognition behavior intervention (CCBT: cognitive therapy and behavioral relaxation) group (n = 50). The primary outcome was state anxiety measured at baseline (T1) using the State Anxiety Inventory (SAI), with repeat assessment conducted 1 hour before anesthesia administration (T2) and post-intervention (T4). Secondary outcomes, including symptoms of depression and insomnia, were recorded at T1, 48 hours after surgery (T3), and T4. The stress hormone were assayed at T1 and T2, and participant satisfaction with intervention was assessed at T4. Blood pressure, and heart rate were collected at above four time points. Repeated-measure ANOVA models were then used to compare results between-two groups and analyze changes in anxiety, depression, and insomnia levels among participants.ResultsAt T2/T3 and T4, compared to the UC group, the CCBT group showed reduced anxiety (F = 17.10, p < .01 and F = 38.54, p < .01), and relieved insomnia symptoms (F = 10.10, P = .002 and F = 9.46, P = .003). Furthermore, the secondary analysis revealed a significant reducer in the participants falling above the clinical cut-off scores in the CCBT group as compared with UC group in SAI scores at T2 (72% vs 88%, p = .04) and in AIS scores at T4 (4% vs 22%, p = .01). For stress hormone, not only the increase in cortisol levels in the UC group was significantly higher at T2 compared to T1 ( p = .001); but also cortisol levels for UC group compared to the CCBT group was found to have a significant effect ( p = .024) at T2. For vital signs, the change of BP and HR were different significantly between-two group at T2 (p < .01). Moreover, the CCBT group showed higher satisfaction scores with Psychological care, Psychosomatic management and total score than the UC group.ConclusionThe CCBT appeared to reduce anxiety level and insomnia symptom, stabilize preoperative hemodynamics and cortisol level in patients undergoing FESS under general anesthesia. Participants also evaluated the CCBT positively, suggesting that it may represent an effective adjunct in preparing patients for surgery.Trial stateThe study was registered with the Chinese Clinical Trial Registry (ChiCTR1900025994) on September 17, 2019. http://www.chictr.org.cn/listbycreater.aspx/ChiCTR1900025994 The study protocol was conducted with the consent of the Ethics Committee of First Hospital of Shanxi Medical University in China on July 31, 2019 (document number [2019]K-SK028)


2019 ◽  
Vol 46 (4) ◽  
pp. 520-525 ◽  
Author(s):  
Bruno Galletti ◽  
Francesco Gazia ◽  
Francesco Freni ◽  
Federico Sireci ◽  
Francesco Galletti

2009 ◽  
Vol 124 (5) ◽  
pp. 500-504 ◽  
Author(s):  
S A Mueller ◽  
M Caversaccio

AbstractObjective:To compare the complication rates and outcome of computer-assisted versus non-computer-assisted functional endoscopic sinus surgery.Methods:We reviewed retrospectively the medical records of 276 patients who had undergone sinus surgery for chronic rhinosinusitis with (n = 108) or without (n = 168) computer assistance, from 1996 to 2004, to determine the incidence of complications and need for revision surgery.Results:The incidence of complications was 6.5 per cent in the computer-assisted group and 6.0 per cent in the non-computer-assisted group (p = 1.00). In the computer-assisted group, 9.2 per cent needed revision surgery, compared with 10.7 per cent in the non-assisted group (p = 0.84).Conclusions:Although our study found no significant difference in complications or revision rates, computer-assisted surgery serves as an important orientation aid during functional endoscopic sinus surgery.


2006 ◽  
Vol 120 (12) ◽  
pp. 1026-1032 ◽  
Author(s):  
K Stelter ◽  
M Andratschke ◽  
A Leunig ◽  
H Hagedorn

Introduction: This paper presents our experience with a navigation system for functional endoscopic sinus surgery. In this study, we took particular note of the surgical indications and risks and the measurement precision and preparation time required, and we present one brief case report as an example.Materials and methods: Between 2000 and 2004, we performed functional endoscopic sinus surgery on 368 patients at the Ludwig Maximilians University, Munich, Germany. We used the Vector Vision Compact® system (BrainLAB) with laser registration. The indications for surgery ranged from severe nasal polyps and chronic sinusitis to malignant tumours of the paranasal sinuses and skull base.Results: The time needed for data preparation was less than five minutes. The time required for preparation and patient registration depended on the method used and the experience of the user. In the later cases, it took 11 minutes on average, using Z-Touch® registration. The clinical plausibility test produced an average deviation of 1.3 mm. The complications of system use comprised one intra-operative re-registration (18 per cent) and one complete failure (5 per cent). Despite the assistance of an accurate working computer, the anterior ethmoidal artery was incised in one case. However, in all 368 cases, we experienced no cerebrospinal fluid leaks, optic nerve lesions, retrobulbar haematomas or intracerebral bleeding. There were no deaths.Discussion: From our experience with computer-guided surgical procedures, we conclude that computer-guided navigational systems are so accurate that the risk of misleading the surgeon is minimal. In the future, their use in certain specialized procedures will be not only sensible but mandatory. We recommend their use not only in difficult surgical situations but also in routine procedures and for surgical training.


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