fusion imaging
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2022 ◽  
Vol 2022 ◽  
pp. 1-5
Author(s):  
Chensi Ouyang ◽  
Xiufang Yang ◽  
Jinghong Xie ◽  
Jinqiang Hu

Objective. To explore the application value of the X-ray digital tomographic fusion technique in the diagnosis of urinary system diseases. Methods. 500 patients with suspected urinary diseases in our hospital were examined by three methods: X-ray digital tomographic fusion imaging (DTS), intravenous pyelography (IVP), and abdominal plain film (KUB), and the image quality before and after tomographic fusion was objectively evaluated. The image quality could be divided into three grades: excellent, good, and poor. Results. The image excellent rate of DTS (88%) was higher than that of IVP (27.5%). The sensitivity of DTS in the diagnosis of renal cyst and space occupying of the bladder was higher than that of IVP ( P < 0.05 ). The accuracy rate of DTS in the diagnosis of urinary calculi was 93.33%, higher than 63.3% of KUB ( P < 0.001 ). The accuracy rate of DTS in the diagnosis of ureteral stricture was 90%, higher than 65% of IVP ( P = 0.03 ). The accuracy of DTS in the diagnosis of hydronephrosis was higher than that of IVP and KUB ( P < 0.05 ). Conclusion. In the examination of urinary system-related diseases, high-definition images can be obtained by timely using sectional fusion technology. Compared with conventional IVP, space occupying lesions such as the bladder and kidney can be displayed more clearly with the help of the tomographic fusion technique, which is helpful to improve the possibility of finding lesions and is of great significance in clinical application.


2022 ◽  
Vol 75 (1) ◽  
pp. e33
Author(s):  
Charles J. Bailey ◽  
Jeffrey B. Edwards ◽  
Marcelo J. Giarelli ◽  
Bruce J. Zweibel ◽  
Laurence J. Grundy ◽  
...  

Author(s):  
David John Wilson ◽  
Gina Allen ◽  
Stuart Bullock ◽  
Jon Denton

Objective: To compare the outcome of nerve root injection guided by ultrasound/MRI fusion with radiofrequency needle tracking (eTRAX©) and the same procedure undertaken by fluoroscopic guidance. Methods: This is a retrospective audit of anonymised clinical records from before and after a change in the imaging technique used to perform nerve root blocks. We studied 181 consecutive patients who had undergone a nerve root block, the first 124 guided by fluoroscopic technique and the next 57 guided by ultrasound/MRI fusion with radiofrequency needle guidance. Using pain diaries, we reviewed the outcome scores at 24 h and 2 weeks. We recorded the use of analgesia, the patient’s satisfaction, complications and the duration of the procedures. Results: Completed pain diaries were returned by 61% in the fluoroscopy group and 67% in the fusion imaging group. The visual analogue pain score was reduced at 24 h by 3.29 [standard deviation (SD) 2.35] for the fluoroscopy group and by 3.69 (SD 2.58) in the fusion group (p 0.399). At two weeks the pain reduction was 3.27 (SD 2.57) for the fluoroscopic group and 4.21 (SD 2.95) for the fusion group (p 0.083). There was no statistically significant difference between the groups. The patient’s satisfaction scores were similar for both groups. The procedure by the two guidance methods took a similar time to perform. There were no serious complications in either group. One patient in the fusion-guided nerve root block group experienced paraesthesia in the nerve distribution for 2 h. Conclusion: Ultrasound/MRI fusion imaging with needle tracking is an effective alternative to fluoroscopic image-guided injection. Advances in knowledge: Fusion imaging guidance provides the same outcome as fluoroscopic guidance. Fusion imaging guidance avoids the need for ionising radiation.


2021 ◽  
pp. annrheumdis-2021-221261
Author(s):  
Christian Dejaco ◽  
Pedro M Machado ◽  
Francesco Carubbi ◽  
Philipp Bosch ◽  
Lene Terslev ◽  
...  

ObjectivesTo develop evidence-based Points to Consider (PtC) for the use of imaging modalities to guide interventional procedures in patients with rheumatic and musculoskeletal diseases (RMDs).MethodsEuropean Alliance of Associations for Rheumatology (EULAR) standardised operating procedures were followed. A systematic literature review was conducted to retrieve data on the role of imaging modalities including ultrasound (US), fluoroscopy, MRI, CT and fusion imaging to guide interventional procedures. Based on evidence and expert opinion, the task force (25 participants consisting of physicians, healthcare professionals and patients from 11 countries) developed PtC, with consensus obtained through voting. The final level of agreement was provided anonymously.ResultsA total of three overarching principles and six specific PtC were formulated. The task force recommends preference of imaging over palpation to guide targeted interventional procedures at peripheral joints, periarticular musculoskeletal structures, nerves and the spine. While US is the favoured imaging technique for peripheral joints and nerves, the choice of the imaging method for the spine and sacroiliac joints has to be individualised according to the target, procedure, expertise, availability and radiation exposure. All imaging guided interventions should be performed by a trained specialist using appropriate operational procedures, settings and assistance by technical personnel.ConclusionThese are the first EULAR PtC to provide guidance on the role of imaging to guide interventional procedures in patients with RMDs.


2021 ◽  
Vol 8 ◽  
Author(s):  
Tao Jie ◽  
Feng Guoying ◽  
Tang Gang ◽  
Shi Zhengrong ◽  
Li Maoping

Background: Radiofrequency ablation (RFA), generally performed under real-time guidance of ultrasound which is safe and effective, is a common minimally invasive therapy for treating hepatocellular carcinoma. Fusion imaging (FI) is a newly developed imaging method, which integrates CT/MRI accurate imaging and matches the characteristics of real-time ultrasound imaging, thereby providing a new approach to guide tumor ablation therapy. However, the efficacy and safety of FI as opposed to ultrasound in tumor ablation remains unclear.Objective: The present study sought to evaluate the difference in the efficacy and safety between FI and ultrasound in radiofrequency surgery for the treatment of hepatocellular carcinoma through a metaanalysis.Materials and Methods: Searching for studies comparing the efficacy and safety of FI and ultrasound in radiofrequency of hepatocellular carcinoma in PubMed, Embase, and Cochrane Library databases for articles published until April 2021. Random or fixed effect models were used for statistical analysis. Metaanalysis and sensitivity analysis were used on the included studies.Results: A total of six studies met predefined inclusion criteria, and were finally included in the analysis. Sensitivity and subgroup analyses, based on predetermined patient characteristics, allowed minimization of bias. In the RFA of hepatocellular carcinoma, FI decreased 1-year overall survival (OS) when compared with ultrasound. But FI was not significantly different from ultrasound in terms of technical efficiency, 1-, 2-, and 3-year local tumor progression (LTP), complications, as well as 2-year OS. Subgroup analysis, based on tumor mean diameter, showed that FI reduced the rate of 1- and 2-year LTP in patients with tumors of mean diameter ≥15 mm when compared with ultrasound. Moreover, operative complications could be reduced in patients with tumor mean diameter &lt;15 mm using FI, compared with ultrasound.Conclusion: Overall, these results showed that FI may have some effects on improving efficacy and safety of thermal ablation in HCC patients, relative to ultrasound. However, it may be a more effective method for managing large lesions, as well as those that are difficult to ablate. Further large-scale and well-designed randomized controlled trials are needed to validate these findings.


Medicina ◽  
2021 ◽  
Vol 57 (12) ◽  
pp. 1289
Author(s):  
Mio Mori ◽  
Kazunori Kubota ◽  
Tomoyuki Fujioka ◽  
Leona Katsuta ◽  
Yuka Yashima ◽  
...  

We used virtual navigator real-time ultrasound (US) fusion imaging with 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) to identify a lesion that could not be detected on the US alone in a preoperative breast cancer patient. Of the patient’s two lesions of breast cancer, the calcified lesion could not be identified by US alone. By fusing US with 18F-FDG PET/CT, which had been performed in advance, the location of the lesion could be estimated and marked, which benefited planning an appropriate surgery. The fusion of US and 18F-FDG PET/CT was a simple and noninvasive method for identifying the lesions detected by 18F-FDG PET/CT.


2021 ◽  
Author(s):  
Joshua Eves ◽  
Abhilash Sudarsanam ◽  
Joseph Shalhoub ◽  
Dimitri Amiras

BACKGROUND Technological advances have transformed vascular intervention over recent decades. Augmented reality (AR) is a subject of growing interest within surgery, with potential to improve the clinicians’ understanding of 3D anatomy and their processing of real-time information. The aim of this review was to summarise the fundamental concepts of these technologies and to systematically assess the literature currently applying AR to vascular surgery. METHODS A systematic literature review of ‘Medline,’ ‘Scopus’ and ‘Embase’ was performed according to PRISMA guidelines. Studies were selected by a blinded process between two investigators and assessed with data quality tools. RESULTS AR technologies have had a number of applications across vascular and endovascular surgery. The majority of studies use 3D imaging (e.g) CT angiogram derived images of vascular anatomy to augment the clinicians anatomical understanding during procedures. A wide range of AR technologies have been employed with ‘heads up’ fusion imaging and AR head-mounted displays the most commonly clinically applied. AR applications have included guiding open, robotic and endovascular surgery while minimising dissection, improving procedural times and reducing radiation and contrast exposure. Additionally, AR has been successfully applied to surgical training, with scope to improve technical and team communication skills. CONCLUSIONS AR has shown promising developments in the field of vascular and endovascular surgery, with potential benefits to surgeons and patients alike. These include reductions in patient risk and operating times while optimising contrast and radiation exposure for radiological interventions. While more technological advances are required to overcome current limitations, it is likely that AR will be a regular feature of vascular surgery clinical practice and training in the future. CLINICALTRIAL Not suitable for PROSPERO registration due to scoping nature of review, without specific intervention or population study.


Tomography ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 581-605
Author(s):  
Bhasker Rao Koppula ◽  
Kathryn A. Morton ◽  
Ragheed Al-Dulaimi ◽  
Gabriel C. Fine ◽  
Nikolas M. Damme ◽  
...  

Dedicated multi-slice single-photon emission computed tomography/computed tomography (SPECT/CT) cameras have become widely available and are becoming a mainstay of clinical practice. The integration of SPECT and CT allow for precise anatomic location of scintigraphic findings. Fusion imaging with SPECT/CT can improve both sensitivity and specificity by reducing equivocal interpretation in comparison to planar scintigraphy or SPECT alone. This review article addresses the technique, basic science principles, and applications of integrated SPECT/CT in the evaluation of musculoskeletal pathology.


2021 ◽  
Vol 42 (Supplement_1) ◽  
Author(s):  
P Breitbart ◽  
J Minners ◽  
M Hein ◽  
H Schroefel ◽  
F J Neumann ◽  
...  

Abstract Background/Introduction Prior studies in patients with transcatheter aortic valve implantation (TAVI) demonstrated an influence of transcatheter heart valve (THV) position on the occurrence of new conductions disturbances (CD) and paravalvular leakage (PVL) post TAVI in balloon-expandable valves (BEV). Purpose Purpose of this study was to investigate the THV position and its influence on the occurrence of CD and PVL in self-expanding valves (SEV). Methods We performed fusion imaging of pre- and post-procedural computed tomography angiography in 104 TAVI-patients (all with Evolut R) to receive a 3-D reconstruction of the THV within the native annulus region. The THV length below the native annulus was measured for assessment of implantation depth. Electrocardiograms pre-discharge were assessed for conduction disturbances (CD), PVL was determined in transthoracic echocardiography. Results The mean implantation depth of the THV in the whole cohort was 4.3±3.0 mm. Using the best cut-off of &gt;4 mm in receiver operating characteristic curve analysis (sensitivity 83.3%, specificity 60.0%) patients with lower THV position developed more new CD after TAVI (68.2 vs. 23.7%, P&lt;0.001). A deep THV position was identified as the only predictor for new CD after TAVI (odds ratio [CI]: 1.312 [1.119–1.539], P=0.001). The implantation depth showed no influence on the grade of PVL (r=0.052, P=0.598). Conclusions In patients with TAVI using the Evolut R SEV, a lower THV positioning (&gt;4 mm length below annulus) was a predictor for new conduction disturbances. In contrast, prosthesis position was not associated with the extent of PVL. FUNDunding Acknowledgement Type of funding sources: None.


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