LabVIEW graphical user interface for a new high sensitivity, high resolution micro-angio-fluoroscopic and ROI-CBCT system

A graphical user interface based on LabVIEW software was developed to enable clinical evaluation of a new High-Sensitivity Micro-Angio-Fluoroscopic (HSMAF) system for real-time acquisition, display and rapid frame transfer of high-resolution region-of-interest images. The HSMAF detector consists of a CsI(Tl) phosphor, a light image intensifier (LII), and a fiber-optic taper coupled to a progressive scan, frame-transfer, charged-coupled device (CCD) camera which provides real-time 12 bit, 1k × 1k images capable of greater than 10 lp/mm resolution. Images can be captured in continuous or triggered mode, and the camera can be programmed by a computer using Camera Link serial communication. A graphical user interface was developed to control the camera modes such as gain and pixel binning as well as to acquire, store, display, and process the images. The program, written in LabVIEW, has the following capabilities: camera initialization, synchronized image acquisition with the x-ray pulses, roadmap and digital subtraction angiography acquisition (DSA), flat field correction, brightness and contrast control, last frame hold in fluoroscopy, looped play-back of the acquired images in angiography, recursive temporal filtering and LII gain control. Frame rates can be up to 30 fps in full-resolution mode. The user friendly implementation of the interface along with the high frame-rate acquisition and display for this unique high-resolution detector should provide angiographers and interventionalists with a new capability for visualizing details of small vessels and endovascular devices such as stents and hence enable more accurate diagnoses and image guided interventions.

[1]  Girijesh Kumar Yadava.  Development and evaluation of a new high-sensitivity, region-of-interest, x -ray imaging system for neuro-interventional applications , 2007 .

[2]  Stephen Rudin,et al.  SU‐FF‐I‐06: A Portable Test Platform for Image Acquisition and Calibration for Cone Beam Computed Tomography (CBCT) and Region of Interest CBCT (ROI‐CBCT) On a Commercial X‐Ray C‐Arm System , 2006 .

[3]  L. Feldkamp,et al.  Practical cone-beam algorithm , 1984 .

[4]  Ravishankar N. Chityala,et al.  Region of interest cone beam computed tomography (ROI-CBCT) , 2007 .

[5]  S Rudin,et al.  Region of interest (ROI) computed tomography (CT): comparison with full field of view (FFOV) and truncated CT for a human head phantom , 2005, SPIE Medical Imaging.

[6]  Stephen Rudin,et al.  New microangiography system development providing improved small vessel imaging, increased contrast-to-noise ratios, and multiview 3D reconstructions , 2006, SPIE Medical Imaging.

[7]  Daniel R. Bednarek,et al.  Generalized objective performance assessment of a new high-sensitivity microangiographic fluoroscopic (HSMAF) imaging system , 2008, SPIE Medical Imaging.

[8]  Daniel R. Bednarek,et al.  New light-amplifier-based detector designs for high spatial resolution and high sensitivity CBCT mammography and fluoroscopy , 2006, SPIE Medical Imaging.

[9]  Daniel R. Bednarek,et al.  Microangiographic image-guided localization of a new asymmetric stent for treatment of cerebral aneurysms , 2005, SPIE Medical Imaging.

[10]  Stephen Rudin,et al.  Endovascular image-guided interventions (EIGIs). , 2007, Medical physics.

[11]  Daniel R. Bednarek,et al.  The solid state x-ray image intensifier (SSXII): an EMCCD-based x-ray detector , 2008, SPIE Medical Imaging.

[12]  Stephen Rudin,et al.  Progress in electron-multiplying CCD (EMCCD) based high-resolution high-sensitivity x-ray detector for fluoroscopy and radiography , 2007, SPIE Medical Imaging.