Articles: surgery.
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Randomized Controlled Trial
Three-dimensional electromagnetic navigation vs. fluoroscopy for endovascular aneurysm repair: a prospective feasibility study in patients.
To evaluate the in vivo feasibility of a 3-dimensional (3D) electromagnetic (EM) navigation system with electromagnetically-tracked catheters in endovascular aneurysm repair (EVAR). ⋯ A 3D EM navigation system, used in conjunction with fluoroscopy and angiography, has the potential to provide more spatial information and reduce the use of radiation and contrast during endovascular interventions. This pilot study showed that 3D EM navigation is feasible in patients undergoing EVAR. However, a larger study must be performed to determine if 3D EM navigation is better than the existing practice for these patients.
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Randomized Controlled Trial Comparative Study
[Comparison of ultrasound-guided and blindly placed radial artery catheterization].
The purpose of this study was to evaluate whether ultrasound (US)-guided radial artery catheterization decreases the number of failed attempts. ⋯ Because the artery and catheter are actually visualized by US, it seems, that US-guided radial artery catheterization is a safe and educational technique.
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The objective of this study was to evaluate the multidetector computed tomography (MDCT) attenuation value between the tumor and aorta in response to the induction therapy for esophageal cancer. In advanced esophageal cancer, the main reason for unresectability is the local invasion of the tumor into the aorta or trachea. Despite remarkable advances in diagnostic modalities, pre-operative assessment of pathological response and local tumor extent in esophageal cancer remains difficult. ⋯ In terms of this distance, 14 out of 19 patients with a tumor-to-aorta distance of <1.3 mm prior to the induction therapy had a distance of >1.3 mm following therapy and underwent curative resection. The assessment of the MDCT attenuation value between the esophageal tumor and the aorta is simple and objectively assesses the response to the induction therapy and aortic invasion in esophageal cancer. This method should be applied to predict the response to the induction therapy and to prevent unnecessary surgery in patients with tumors involving the aorta.
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Historical Article
[Development of intraoperative C-arm imaging in trauma surgery].
Since the earliest beginnings of using X-rays, two forms of examination techniques have been known: X-ray imaging and projection onto films. The new technology very rapidly became widespread. Just a few months after the discovery of the so-called X-rays, the first fluoroscopes (instruments for visualizing internal structures) were constructed and constantly improved upon. ⋯ At about the beginning of the new century the first digital imaging systems with solid-state detectors were put into service. Flat panel detectors offer high-quality imaging with good spatial resolution and contrast recognition. At the present time, storable intraoperative three-dimensional diagnostic imaging is available.