The process of 3D freehand ultrasound acquisition consists of two steps: scanning and reconstruction. Prior to scanning, a position sensor is attached to the probe for tagging each image with its position and orientation in space. A crucial step prior to reconstruction and visualization is calibration of the ultrasound probe with the attached position sensor, i.e. determining the position and o...

OBJECTIVE To determine if image-guided spine surgery is cost effective. METHODS A prospective case series of the first 100 patients undergoing thoracolumbar pedicle screw instrumentation under image-guidance was compared to a retrospective control group of the last 100 patients who underwent screw placement prior to the use of image-guidance. The image-guidance system was NaviVision (Vector V...

This paper presents the development and evaluation of video augmentation on the stereoscopic da Vinci S system with intraoperative image guidance for base of tongue tumor resection in transoral robotic surgery (TORS). Proposed workflow for image-guided TORS begins by identifying and segmenting critical oropharyngeal structures (e.g., the tumor and adjacent arteries and nerves) from preoperative...

The importance of localizationguided surgery in breast cancer cannot be underestimated. In countries with screening programmes, one-third of all breast cancers diagnosed are clinically occult1. The extension of breast screening age and increased utilization of advanced imaging modalities such as MRI mean that localization-guided surgery will become increasingly necessary. The standard technique...

Uterine leiomyomas pose a significant health issue to reproductive-age women. Many women desire uterine conservation, and previously safe and efficacious therapies have been limited. Magnetic resonance-guided focused ultrasound surgery is a new noninvasive therapy that has been proven to be both safe and efficacious in the treatment of fibroids.

OBJECTIVE Although fluorescence imaging is being applied to a wide range of cancers, it remains unclear which disease populations will benefit greatest. Therefore, we review the potential of this technology to improve outcomes in surgical oncology with attention to the various surgical procedures while exploring trial endpoints that may be optimal for each tumor type. BACKGROUND For many tumo...

Background To ensure accurate implant placement, surgical guides are used to control the steps of placement surgery. Purpose Evaluation accuracy in long span edentulous area by novice clinicians according fully-guided (FG), pilot-guided (PG), and freehand (FH) protocols. Materials methods Maxillary models with four missing teeth from right first canine molar were produced 3-dimensional printing...

BACKGROUND Occult hypovolaemia is a key factor in the aetiology of postoperative morbidity and may not be detected by routine heart rate and arterial pressure measurements. Intraoperative gut hypoperfusion during major surgery is associated with increased morbidity and postoperative hospital stay. We assessed whether using intraoperative oesophageal Doppler guided fluid management to minimize h...

Background: Opioids added to local anesthetics for peripheral nerve blocks may intensify analgesia and prolong analgesic and sensorial block duration. These agents may also cause potentiation and prolongation of motor block. Objective: This study compared the postoperative effects of 30 mL of 0.25% bupivacaine +50 mcg fentanyl and 30 mL of 0.25% bupivaca...

Purpose: This study aimed to evaluate the tracking accuracy of a robot-guided implant surgery system and compare spatial robot-assisted with that static stentguided for placement.Materials Methods: The robot was evaluated by measuring discrepancy between arm actual programmed position. Dental implants were placed on 3D printed human phantom models using stent-guided surgeries. top, apex, angula...