RSNA 2019 Advanced Visualization Preview

Road to RSNA 2019: Advanced Visualization Preview

By Abraham Kim, staff writer
November 12, 2019

From 3D printing to virtual and augmented reality (VR/AR), advanced visualization technologies continue making great strides in healthcare with each passing year. RSNA 2019 attendees will have the opportunity to learn about and discuss these developments in a number of scientific and educational presentations, demonstrations, and hands-on workshops.

The main talking point in the community at this year's meeting appears to be medical 3D printing. For the past several years, researchers from across the globe have continuously attested to the potential benefits of applying 3D printing to clinical applications.

Adding to this body of evidence, dozens of presenters at this year's conference will share how 3D-printed anatomical models have helped improve preoperative planning, patient education, and even surgical outcomes. Several workshops will also provide hands-on instruction on creating individually tailored 3D-printed models based on CT, MRI, ultrasound, and even micro-CT scans.

What's more, experts on 3D printing will lead refresher courses on a broad range of relevant topics that cover the basics, such as how to launch a hospital 3D printing lab, as well as more advanced issues related to regulation and reimbursement. With four Current Procedural Terminology (CPT) category III codes for 3D printing approved for the first time earlier this year, sessions on the proper way to apply 3D printing codes at a medical practice couldn't be more timely.

VR and AR continue to make headway in clinical settings as well, most notably in the subspecialties of neuroradiology and interventional radiology. Specialists in both areas will deliver workshops detailing the ways in which VR and AR helped radiologists navigate patient anatomy and prepare for procedures -- for example, transjugular intrahepatic portosystemic shunt (TIPS), brain tumor surgery, and vascular access -- through realistic planning and simulation.

Presenters will also highlight the potential value of integrating various other advanced imaging techniques into medicine: 4D flow MRI continues to prove its worth in evaluating heart disease; cinematic rendering enhances otherwise obscure details in complex cases; and 3D fusion imaging serves as a more comprehensive alternative for diagnosing common diseases.

Amid all of these technologies, researchers will present still more novel approaches to imaging at RSNA 2019. One noteworthy example is the use of holographic light-field displays to view virtual 3D models of medical images directly on a computer screen.

More details on these new and upcoming advanced visualization tools are laid out in a selection of abstracts below. For a full listing of events and presentations at the conference, take a look at the RSNA 2019 meeting program.

Scientific and Educational Presentations
CT whole-heart volume predicts adverse cardiac events
Sunday, December 1 | 11:05 a.m.-11:15 a.m. | SSA03-03 | Room S105AB
Individuals with a small 3D whole-heart volume, as calculated on CT scans, have an increased risk of major adverse cardiac events, compared with those with a normal or large heart volume, according to researchers from Harvard Medical School.
How informed are physicians on hospital 3D printing?
Sunday, December 1 | 1:00 p.m.-1:30 p.m. | IN243-SD-SUB2 | Lakeside, IN Community, Station 2
In this Sunday presentation, researchers from Switzerland will report on the findings of a physician survey investigating their awareness and understanding of 3D printing services at a medium-sized hospital with an in-house 3D printing lab.
3D-printed coronary models help validate FFR-CT software
Monday, December 2 | 11:00 a.m.-11:10 a.m. | SSC01-04 | Room S402AB
Patient-specific 3D-printed models based on coronary CT angiography (CCTA) scans allowed clinicians to obtain fractional flow reserve (FFR) measurements nearly as well as FFR derived from CCTA (FFR-CT) and invasive FFR in this study to be presented on Monday.
Light-field displays enable 3D visualization on PC screens
Monday, December 2 | 12:15 p.m.-12:45 p.m. | IN271-SD-MOA4 | Lakeside, IN Community, Station 4
Holographic light-field displays enabled radiologists to examine virtual 3D models based on medical images directly on a computer screen without having to wear a specialized headset in a study detailed in this Monday poster presentation.
Smartphone-based AR aids image-guided needle placement
Monday, December 2 | 12:15 p.m.-12:45 p.m. | VI226-SD-MOA3 | Lakeside, VI Community, Station 3
In this presentation, researchers from the U.S. National Institutes of Health will discuss the potential advantages of a smartphone-based augmented reality (AR) application that they designed to facilitate CT-guided percutaneous needle placement.
Dual-velocity 4D flow MRI helps assess complex CHD
Monday, December 2 | 3:20 p.m.-3:30 p.m. | SSE03-03 | Room E350
Setting both the upper and lower velocity limits for 4D flow MRI may improve the accuracy of velocity measurements in patients with complex congenital heart disease (CHD), according to this study to be presented on Monday.
Automated software measures extracellular volume on 3D CT
Tuesday, December 3 | 11:00 a.m.-11:10 a.m. | SSG02-04 | Room S104A
Automated calculation of extracellular volume on 3D CT is as accurate as manual measurements on conventional CT and MRI, and it may facilitate the diagnosis and prognosis of cardiac amyloidosis, according to researchers from France.
New catalog lists radiodensity of 3D printing materials
Tuesday, December 3 | 12:15 p.m.-12:45 p.m. | IN232-SD-TUA5 | Lakeside, IN Community, Station 5
In this poster presentation, researchers from Washington will provide insight into their catalog on 3D printing materials, which details the materials' CT radiodensity, among other imaging features.
How to implement an in-house 3D printing service
Tuesday, December 3 | 3:00 p.m.-3:10 p.m. | SSJ13-01 | Room S501ABC
What does it take to launch a self-sufficient hospital 3D printing service? Researchers from a health network in Pennsylvania will share their experiences on doing so in this Tuesday session.
3D-printed metal implants bolster bone tumor surgery
Tuesday, December 3 | 3:10 p.m.-3:20 p.m. | SSJ13-02 | Room S501ABC
In this presentation, researchers from South Korea will explain how 3D-printed implants based on MRI and CT scans of patients with bone tumors enabled surgeons to reconstruct postsurgical skeletal defects better than conventional methods.
Analytical tool may reduce variation in 3D-printed models
Tuesday, December 3 | 3:20 p.m.-3:30 p.m. | SSJ13-03 | Room S501ABC
Statistical analysis can help clinicians evaluate the accuracy of image segmentation and, ultimately, minimize variability in creating 3D-printed models, according to a study to be presented on Tuesday.
AR, 3D printing may improve prostatectomy outcomes
Tuesday, December 3 | 3:30 p.m.-3:40 p.m. | SSJ13-04 | Room S501ABC
Augmented reality (AR) and 3D-printed models based on the MRI scans of patients with prostate cancer may help reduce operating times, blood loss, and positive surgical margins for prostatectomy, researchers will report in this Tuesday session.
AR, 3D printing enable vascular access simulation
Tuesday, December 3 | 3:40 p.m.-3:50 p.m. | SSJ13-05 | Room S501ABC
In this presentation, researchers from Utah will discuss how they developed a simulator for common femoral artery access procedures using a combination of augmented reality (AR) technology and 3D-printed vascular models.
3D printing helps create TIPS simulation in AR, VR
Tuesday, December 3 | 3:50 p.m.-4:00 p.m. | SSJ26-06 | Room E350
Interventional radiologists may be able to improve their performance of transjugular intrahepatic portosystemic shunt (TIPS) procedures by practicing in augmented reality (AR) and virtual reality (VR) environments using a 3D-printed simulator, which researchers from Utah will describe in this scientific session.
AR, AI improve navigation for percutaneous vertebroplasty
Wednesday, December 4 | 10:30 a.m.-10:40 a.m. | SSK14-01 | Room E353A
In this poster presentation, researchers from France will discuss the potential benefits of a new interventional radiology technique that uses augmented reality (AR) and artificial intelligence (AI) to guide percutaneous vertebroplasty.
3D-printed vessels gauge performance of balloon catheters
Wednesday, December 4 | 12:15 p.m.-12:45 p.m. | NR384-SD-WEA3 | Lakeside, NR Community, Station 3
3D-printed models of blood vessels in the brain containing a variety of aneurysmal defects helped interventional radiologists decide on the optimal type and size of balloon catheter for endovascular coiling procedures, researchers from California will report in this poster presentation.
Micro-CT helps produce highly detailed 3D-printed lungs
Wednesday, December 4 | 3:10 p.m.-3:20 p.m. | SSM06-02 | Room N227B
Researchers from Japan have used micro-CT scans to create magnified 3D-printed lung models and will discuss the potential benefit of using similar models in the evaluation of peripheral lung diseases in this presentation.
3D fusion imaging bolsters noninvasive workup for CAD
Thursday, December 5 | 11:00 a.m.-11:10 a.m. | SSQ03-04 | Room E450B
3D fusion imaging combining cardiac CT and MRI may serve as a comprehensive, noninvasive diagnostic technique for evaluating coronary artery disease (CAD), according to this study to be presented on Thursday.
CCTA, 4D flow MRI uncover causes of graft failure
Thursday, December 5 | 11:50 a.m.-12:00 p.m. | SSQ03-09 | Room E450B
The combination of coronary CT angiography (CCTA) and 4D flow MRI identified substantially larger areas of abnormal wall shear stress (WSS) in venous grafts, which were associated with a higher failure rate than arterial grafts, in a study by researchers from Canada.