Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 11 of 11 for “"C-arm"”.
-
C-ARM TOMOGRAPHIC IMAGING TECHNIQUE FOR DETECTION OF KIDNEY STONES
… radiation which is more than regular x-rays. C-arm technique is a new x-ray imaging modality that uses 2D array detector and cone shaped x-ray beam to create 3D information about the scanned object. Both x-ray source and 2D array detector cells mounted on C-shaped wheeled structure (C-arm). A …
-
Assessment of Bidirectional Compatibility between a Novel Magnetic Tracking System and C-Arm Fluoroscopy
… accuracy is affected by the presence of the C-arm, and the required placement of the magnetic field generator can block the X-ray beam and generate image artifacts. A novel radiolucent magnetic field generator prototype, with “metal immunity mode” has recently been developed and the objectives …
-
Towards improving the Statscan X-ray image quality through sliding mode control of the C-arm
… the trapezoidal motion profile of the scanning C-arm may cause mismatches between the detector and the collimated beams from the X-ray source. This results in a partial degradation of image quality. The Statscan™ X-ray system was investigated and the following constraints were identified: The …
-
Automation of region specific scanning for real time medical systems
… Modern low dose x-ray devices operate using a c-arm which moves across the entire human body. This research reduces the radiation applied to the human body by isolating the region that needs exposure. The medical scanner that this work is based on is still under development and therefore a …
-
Deep Photoacoustic Imaging and Acoustic Cavitation Mapping in Shockwave Lithotripsy
… Current imaging modalities used in SWL (e.g., C-arm fluoroscopy and B-mode ultrasound) are not sensitive to vascular injuries. To better understand the mechanism of tissue injury and improve treatment safety and efficiency, it is highly desirable to concurrently detect cavitation and vascular …
-
Factors Affecting Postural Reduction in Posterior Surgery for Thoracolumbar Burst Fracture
… Postural reduction was evaluated using C-arm fluoroscopic images and regarded as insufficient when the lateral Cobb angle was ≥20 degrees or AP Cobb angle ≥10 degrees. Clinical characteristics including sex, age, body mass index, time to operation, injury level, and neurological injury, as …
-
The design and prototyping of a Transcatheter Aortic Valve Implantation training system specific for aortic valve regurgitation.
… the entire procedure, and uses three locating arms called trunks for easy implantation through temporary anchoring tactile feedback. Compared to majority of the delivery system in the market the heart of the patient doesn't need to be stopped when the SAT delivery device is being used and …
-
3D reconstruction of cerebral blood flow and vessel morphology from x-ray rotational angiography
… vessels at some projection angles) of the c-arm using a reliability map. For the flow quantification, small changes to the clinical protocol of rotational angiography are desirable. These, however, hamper the standard 3D reconstruction. Therefore, a new method for the 3D reconstruction of the …
-
Dynamic Cone-beam Reconstruction for Perfusion Computed Tomography
… represent the first step towards the use of C-arm systems for perfusion imaging purposes.
-
Impact of inactivity and exercise on the vasculature in humans : the role of blood flow and shear stress on arterial adaptations in healthy males
… SR was further manipulated in one arm via forearm heating (40?1?C) in a water bath (+0C) throughout the exercise bouts. Exercise induced stepwise increases in SR in the unheated arm (~0C) (P<0.05). In the +o( arm, SR was significantly greater than in the ~o( limb. Brachial artery …