Realization of real-time X-ray stereoscopic vision during interventional procedures

Abstract

During interventional procedures, the deficiencies of nonstereoscopic vision increase the difficulty of identifying the anteroposterior direction and pathways of vessels. Therefore, achieving real-time stereoscopic vision during interventional procedures is meaningful. Pairs of X-ray images were captured with identical parameter settings, except for different rotation angles (represented as the α angle). The resulting images at these α angles were used as left-eye and right-eye views and were horizontally merged into single left-right 3D images. Virtual reality (VR) glasses were used for achieving stereo vision. Pairs of X-ray images from four angiographies with different α angles (1.8–3.4°) were merged into left-right 3D images. Observation with VR glasses can produce realistic stereo views of vascular anatomical structure. The results showed that the optimal α angles accepted by the brain for generating stereo vision were within a narrow range (approximately 1.4–4.1°). Subsequent tests showed that during transcatheter arterial chemoembolization, 3D X-ray stereoscopic images provided significantly improved spatial discrimination and convenience for identifying the supply vessels of a liver tumor and its anteroposterior direction compared with plain X-ray images (all P < 0.01). Real-time X-ray stereoscopic vision can be easily achieved via the straightforward method described herein and has the potential to benefit patients during interventional procedures.

On the practical applications of objective quality metrics for stereoscopic 3D imaging

“…107,108 With the rapid advancements in medical technologies, there is a similarly high demand for stereoscopic medical imaging devices. 109 In a number of published works, [109][110][111][112][113] we can clearly see that quite a few of the works reviewed in this paper are utilized in medical contexts. Stereo 3D videos is also present in the designing of Automated driving systems (ADSs) 114,115 and automatic parking systems 116 for providing visual depth perception.…”

The application and prospection of augmented reality in hepato-pancreato-biliary surgery

“…Their practical evaluation had shown a good acceptance of this system for HPB surgeons. Except for Open surgery and laparoscopic surgery, AR was also applied to ablation and interventional operation plan (53,54).…”

Cilvēka fizioloģijas un uztveres aktuālie pētījumi 2020. gadā : rakstu krājums

“…Šo izaicinājumu cenšas pārvārēt kā papildu iespēju piedāvājot izskatīt daudzus šķērsgriezumu attēlus vienlaikus, demonstrējot tos kā renderētus telpiskus attēlus ar medicīnā iepriekš neizmantotām vizualizācijas metodēm, piemēram, virtuālajā realitātē (Deng et al, 2018) vai uz stereoskopiskiem ekrāniem (Ferre et al, 2018). Tomēr jāpiebilst, ka dotās vizualizācijas metodes ierobežo novērotāju skaitu, un ilgstoša skatīšanās provocē akomodācijas-verģences konfliktu nesaskaņotās dziļuma informācijas dēļ , izraisa diskomfortu un astenopiskās sūdzības (Hoffman et al, 2008).…”