RSNA 2018 Advanced Visualization Preview
By Abraham Kim, staff writer
November 6, 2018

The integration of advanced visualization tools into healthcare has grown exponentially in recent years. At RSNA 2018, researchers will describe the various clinical applications of tools such as virtual and augmented reality (VR/AR), 3D printing, and cinematic rendering in dozens of workshops, presentations, and refresher courses.

Among the principal topics relevant to advanced visualization in medicine is the emergence of virtual and augmented reality. Both VR and AR technologies offer clinicians a fresh take on medical imaging, not only providing them with highly detailed views of 3D virtual models but enabling them to manipulate these imaging data as well.

At RSNA 2018, presenters will explain how they used the fully immersive environment of a VR headset to assist in preoperative planning for various types of procedures, from simple needle insertion to radical prostatectomy. Taking this one step further, clinicians will discuss how incorporating AR into the intraoperative workflow improved the efficiency of image-guided interventions.

Also in the conference spotlight, 3D printing has proved to be an invaluable tool for replicating complex patient anatomy. Several groups will demonstrate their unique methods for fabricating 3D-printed models from patient's CT and MRI scans, as well as the various ways in which these individually tailored models helped reduce operating times and bolster patient education.

The visualization of 3D virtual models on 2D displays also is continuing to make headway. For example, developments in 3D CT and 3D MRI equipment have encouraged clinicians to use the modalities to assess the range of motion for diseased joints and examine vasculature before performing interventional procedures. Radiologists will also share their initial experiences using a relatively new 3D imaging technique -- cinematic rendering -- to create photorealistic CT scans for the assessment of acute trauma.

Finally, 4D imaging has been a boon for clinicians who rely on real-time imaging. Researchers will share how they used 4D CT angiography to assess cerebral blood flow in one presentation, and another team will discuss how 4D flow MRI was critical for gauging patient outcome after bypass surgery.

For those seeking more in-depth information, check out the noteworthy abstracts below that highlight the role of advanced visualization in healthcare, or view the RSNA 2018 meeting program for the full listing of scientific abstracts and educational programs.

Scientific and Educational Presentations
Is 3D MRI or 3D CT best for assessing hip joints?
Sunday, November 25 | 10:45 a.m.-10:55 a.m. | SSA15-01 | Room E353B
3D virtual models based on pelvic MRI scans can facilitate presurgical planning for hip joint surgery about as well as 3D CT models can, according to researchers from Switzerland.
How to apply virtual and augmented reality in radiology
Sunday, November 25 | 12:30 p.m.-1:00 p.m. | IN007-EC-SUA | Lakeside, IN Community
Participants in this hands-on, fully immersive educational presentation will have the opportunity to learn about a wide range of applications for virtual and augmented reality technology in radiology.
3D depth camera fine-tunes patient positioning on CT
Monday, November 26 | 10:50 a.m.-11:00 a.m. | SSC13-03 | Room N230B
Automated patient positioning for CT exams using a 3D camera may be more accurate than conventional positioning by radiologic technologists, according to researchers from Germany and Switzerland.
Cinematic rendering bolsters visualization of acute trauma
Monday, November 26 | 11:20 a.m.-11:30 a.m. | SSC04-06 | Room S504AB
In this Monday presentation, researchers from Canada will detail their initial experience with cinematically rendered images in the context of acute trauma.
3D MRA enables presurgical survey of prostate arteries
Monday, November 26 | 11:50 a.m.-12:00 p.m. | SSC15-09 | Room E352
Researchers in this presentation will examine the viability of using 3D contrast-enhanced MR angiography (MRA) to visualize prostate arteries before performing an interventional radiology procedure.
VR, AR facilitate planning for brain cancer surgery
Tuesday, November 27 | 10:50 a.m.-11:00 a.m. | SSG10-03 | Room E353A
Clinicians can use virtual reality (VR) and augmented reality (AR) technology to view 3D models of MRI scans during presurgical planning for brain tumor resection, according to this Tuesday session.
4D MRI validates new technique for heart surgery
Tuesday, November 27 | 10:55 a.m.-11:05 a.m. | RC303-09 | Room E350
By monitoring blood flow with 4D MRI, researchers from France were able to confirm the effectiveness of a new technique for valve-sparing aortic root replacement.
AI boosts efficiency of analyzing 4D brain CTA scans
Tuesday, November 27 | 12:15 p.m.-12:45 p.m. | NR397-SD-TUA7 | Lakeside, NR Community, Station 7
Researchers from the Netherlands have developed an artificial intelligence (AI) algorithm capable of segmenting brain vasculature on 4D CT angiography (CTA) scans, according to this Tuesday poster presentation.
3D-printed skull bone enables simulation of ear surgery
Wednesday, November 28 | 12:15 p.m.-12:45 p.m. | IN224-SD-WEA5 | Lakeside, IN Community, Station 5
U.S. researchers explore the feasibility and potential benefits of simulating cortical mastoidectomy with 3D-printed models of a skull bone in this poster presentation.
3D printing improves speed, accuracy of aortic repair
Wednesday, November 28 | 12:45 p.m.-1:15 p.m. | IN228-SD-WEB4 | Lakeside, IN Community, Station 4
Using patient-specific 3D-printed models to plan for open surgical repair of the aorta may boost the procedure's accuracy and shorten operating time, according to this presentation being delivered on Wednesday.
3D-printed coronary phantoms help assess blood flow
Wednesday, November 28 | 3:00 p.m.-3:10 p.m. | SSM13-01 | Room E353C
Researchers from New York used coronary CT angiography (CCTA) scans to create 3D-printed phantoms of the coronary tree that replicate the anatomy and blood flow of real arteries in patients with coronary artery disease.
3D printing reduces operating time for fracture repair
Wednesday, November 28 | 3:10 p.m.-3:20 p.m. | SSM13-02 | Room E353C
In this Wednesday presentation, Swiss researchers will detail how they were able to lower surgical times for repairing orbital wall fractures with 3D-printed models based on CT scans of the skull.
Deep learning accelerates segmentation for 3D printing
Wednesday, November 28 | 3:20 p.m.-3:30 p.m. | SSM13-03 | Room E353C
A group from South Korea has developed a deep-learning algorithm that can automate image segmentation for the 3D printing of kidney models, which may ultimately speed up their production.
3D printing, AR promote patient education
Wednesday, November 28 | 3:30 p.m.-3:40 p.m. | SSM13-04 | Room E353C
Patients with cancer may better understand their disease and treatment options by examining personalized 3D models made with 3D printing or augmented reality (AR) technology, according to this Wednesday presentation.
AR may replace fluoroscopy for CT-guided spinal surgery
Wednesday, November 28 | 3:50 p.m.-4:00 p.m. | SSM13-06 | Room E353C
In this session, researchers from Washington, DC, will describe how they used an augmented reality (AR) device as an alternative to fluoroscopy for image-guided spinal procedures.
3D CT improves precision of cheekbone reconstruction
Thursday, November 29 | 11:10 a.m.-11:20 a.m. | SSQ15-05 | Room S503AB
Assessing the symmetry of cheekbones using 3D CT technology may help improve the precision of maxillofacial reconstructive surgery, according to this Thursday presentation.
4D MRI quantifies blood flow after bypass surgery
Thursday, November 29 | 11:40 a.m.-11:50 a.m. | SSQ16-08 | Room S504AB
Researchers from Japan will discuss the viability of evaluating the recovery status of patients after bypass surgery by quantifying their blood flow using 4D MRI.
AR 'smart glasses' facilitate interventional procedures
Thursday, November 29 | 12:45 p.m.-1:15 p.m. | VI266-SD-THB1 | Lakeside, VI Community, Station 1
A group from the U.S. National Institutes of Health has developed a technique that uses augmented reality (AR) technology to display virtual images of internal lesions directly on a patient during interventional radiology procedures.