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Aim: To evaluate the availability and our experience of intraoperative image-guidance in endoscopic nasocular operation.
Methods: Seven cases of endoscopic nasal surgery with intraoperative image-guidance were retropectively reviewed, including 3 cases of optic nerve injury; 3 cases of foreign object of optic behind the eyeball; 1 case of retrobulbar tumor (angeioma).
Results: The preoperative preparatory time would take 15 minutes, including coordination, head holder localization, conventional instrument registration. In our cases, the localization accuracy between 3-D image landmarks of navigation system and actual anatomical landmarks was less than 1.3mm. The optic nerve and other anatomical points could be orientated accurately in intraoperative procedures. No complication occurred.
Conclusion: Nasal endoscope combined with image-guidance systems provides accurate anatomical localization of anterior skull base with enlarged operation field. It is possible for surgeons to observe important anatomical structures during endoscopic surgery. It could increase the effectiveness and decrease surgical complications, especially in complicated cases.
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http://dx.doi.org/10.3980/j.issn.2222-3959.2010.03.17 | DOI Listing |
Quant Imaging Med Surg
September 2025
Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Background: The fusion of intraoperative 2D laparoscopic images with preoperative 3D scans offers significant advantages in minimally invasive surgery, such as improved spatial understanding and enhanced navigation. This study aims to enable augmented reality for deformable organs through accurate 2D-3D registration. However, achieving real-time and precise alignment remains a major challenge due to organ deformation, occlusion, and the difficulty of estimating camera parameters from monocular images.
View Article and Find Full Text PDFFront Oncol
August 2025
Institute of Medical Imaging and Artificial Intelligence of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, China.
Radiotherapy remains essential in breast cancer management, yet its long-term cardiotoxicity, driven primarily by radiation-induced myocardial fibrosis, threatens survivorship, particularly in left-sided tumors. Surgical refinements, including breast-conserving surgery with sentinel lymph node biopsy and total mastectomy, effectively reduce radiation fields and cardiac exposure. Intraoperative radiotherapy with lead shielding markedly lowers left anterior descending artery dose from 5.
View Article and Find Full Text PDFProg Biomed Eng (Bristol)
September 2025
School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200030, People's Republic of China.
Image-guided tumor ablation (IGTA) has revolutionized modern oncological treatments by providing minimally invasive options that ensure precise tumor eradication with minimal patient discomfort. Traditional techniques such as ultrasound (US), computed tomography, and magnetic resonance imaging have been instrumental in the planning, execution, and evaluation of ablation therapies. However, these methods often face limitations, including poor contrast, susceptibility to artifacts, and variability in operator expertise, which can undermine the accuracy of tumor targeting and therapeutic outcomes.
View Article and Find Full Text PDFBrachytherapy
August 2025
Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, USA.
Purpose: To report on primary outcomes and dosimetric results of a prospective clinical trial and protocol for use of iterative intraoperative magnetic resonance imaging (iMRI) in gynecologic brachytherapy.
Methods: Patients with locally advanced cervical or vaginal cancer (FIGO stages IB2 - IVA, and stage II-IVA, respectively) undergoing pulsed dose rate (PDR) brachytherapy were enrolled in a prospective clinical trial (NCT03634267) using iterative 3T iMRI during brachytherapy implant placement. Applicator and optional interstitial needles were placed under iMRI guidance in a 3T clinical MRI scanner.
Quant Imaging Med Surg
August 2025
Department of Anesthesia and Pain Management, Sunnybrook Health Sciences Center, University Health Network, Toronto, Canada.
Background: Hypertrophic obstructive cardiomyopathy (HOCM), a subset of hypertrophic cardiomyopathy (HCM), is characterized by dynamic left ventricular outflow tract (LVOT) obstruction, often caused by systolic anterior motion (SAM) of the mitral valve and septal hypertrophy. Accurate intraoperative assessment of septal morphology, SAM distance, and LVOT area (LVOTa) is critical for surgical planning during septal myectomy. While transesophageal echocardiography (TEE), particularly with three-dimensional (3D) imaging, is the standard modality for evaluating these parameters, it may be contraindicated or suboptimal in select cases.
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