PhD Scientific Days 2018

Budapest, April 19–20, 2018

Evaluation of Digital Variance Angiography in carotid and cerebral X‐ray angiography

Óriás, Viktor

Viktor Óriás1,3 , Dávid Szöllősi2 , István Góg2 , Péter Sótonyi1 , Krisztián Szigeti2 , Szabolcs Osváth2 , Zoltán Ruzsa1,3
1: Heart and Vascular Center, Semmelweis University, Budapest HU
2: Department of Biophysics and Radiation Biology, Semmelweis University, Budapest HU
3: Bács-Kiskun County Hospital, Kecskemét HU

Language of the presentation

English

Text of the abstract

Introduction: Carotid and cerebral X-ray angiography are routine procedures that precede and follow all the percutaneous transluminal angioplasties performed in the region. Detailed visualization of the vasculature is crucial and the cerebral blood flow is extremely sensitive to rheological changes caused by iodine contrast material. Kinetic imaging is a new X-ray image processing method that significantly enhances image quality.
Aims: Our objective was to compare the performance of kinetic imaging and traditional digital subtraction angiography (DSA) in carotid and cerebral X‐ray angiography setting.
Method: The kinetic imaging algorithm produces a so‐called Digital Variance Angiography (DVA) image. We examined the image series of 10 patients undergoing standard protocol carotid and cerebral angiography. Both DVA and DSA images were calculated. We compared the signal‐to‐noise ratio (SNR) of carefully selected regions of interest and evaluated the images using an online blinded and anonymized questionnaire.
Results: On average, DVA provided 3.5 (± 0.81) times more SNR than DSA (p< 0.05). Angiography specialists agreed that DVA provided more detailed vasculature than DSA.
Conclusion: DVA images visualized the same anatomical structures with better image quality than DSA. The higher image quality allows the development of safe image acquisition protocols with significantly reduced iodine contrast material and/or X-ray dose.

Data of the presenter

Doctoral School: Clinical Medicine
Program: Clinical and Experimental Angiology Research
Supervisor: Péter Sótonyi
E-mail address: orias.viktor@gmail.com