RSNA 2017 Advanced Visualization Preview
By Abraham Kim, staff writer
November 8, 2017

RSNA 2017 is almost here, and considering all the developments in advanced visualization that have taken place this past year, the timing could not be better.

3D printing has taken great strides, and numerous workshops, courses, and presentations in McCormick Place will cover the basics of 3D printing -- particularly how to use it and make it cost-effective -- as well as the flashier aspects of incorporating 3D printing into medical practice.

Collectively, this year's roundup of 3D printing sessions promotes the technology's role in bridging the gap between a theoretical understanding of procedures and actually performing them. Researchers will describe how they used 3D-printed models to simulate arthrography, angiography, valve replacement, and CT- and MR-guided thermal ablation. They will also expound how 3D printing can buttress the development of implants and what type of printing materials are best-suited for visualization.

Also stepping into the spotlight this year is 4D imaging. Investigators have been using 4D CT to catch invasive or growing pathology in specific organs, whereas they have reserved 4D MRI more for displaying blood flow and joints in motion. What better way is there to understand anatomical function and assess pathology than to visualize it all in real-time?

Advanced visualization is bringing virtual reality into the front lines as well. Most commonly associated with video games, virtual reality has recently been lending a hand to clinicians, including radiologists.

One research group will showcase a virtual and augmented reality educational platform that allows radiologists to study common cases online and on the go. Another team will explain how it used a virtual reality headset to train radiologists for emergency contrast situations, such as patients having allergic reactions. Extending its reach, virtual imaging can also bolster diagnosis in the brain through real-time virtual sonography, as well as help physicians optimize and individually tailor surgeries, according to presenters.

Interest in the latest imaging modalities continues to grow by leaps and bounds. A prime example is the 3D visualization of medical images, which when performed using 3D fusion imaging software, allows for joint assessment of the coronary arteries by combining coronary CT angiography and CT myocardial perfusion images. The computer animation technique of cinematic rendering adds yet another (realistic) dimension to 3D imaging.

Last but not least, attendees interested in understanding how human perception affects image analysis should stop by the Perception Lab in the Lakeside Learning Center to take part in brief, snazzy visual experiments designed specifically for radiologists. Jeremy Wolfe, PhD, from Brigham and Women's Hospital, and Todd Horowitz, PhD, from the National Cancer Institute, will lead the exhibit.

More information on these and similar advanced visualization sessions awaits below. The complete listing of abstracts for RSNA 2017 is available here.

Scientific and Educational Presentations
4D CT bests standard CT at spotting pleural invasion
Sunday, November 26 | 10:55 a.m.-11:05 a.m. | SSA05-02 | Room S404CD
The use of 4D CT scans may boost radiologists' accuracy for detecting pleural invasion in lung cancer, according to researchers from Japan.
3D printing benefits fluoroscopy-guided arthrography
Sunday, November 26 | 1:00 p.m.-1:30 p.m. | IN205-SD-SUB3 | Lakeside, IN Community, Station 3
Radiologists can design and develop realistic simulation phantoms for fluoroscopic-guided shoulder arthrography by combining 3D printing with molding techniques, according to U.S. researchers.
How do visual limitations affect radiologists' work?
Sunday, November 26 | 2:00 p.m.-3:30 p.m. | RC154 | Room E450B
This refresher course will examine how perceptual limitations can affect the capacity of radiologists to analyze medical images, as well as offer potential ways to diminish associated medical errors.
Virtual sonography assesses fetal brain pathology
Sunday, November 26 | 3:00 p.m.-3:10 p.m. | RC113-06 | Room S102CD
Real-time virtual sonography can bolster the diagnosis of cerebral pathologies in fetuses, according to researchers from Italy.
Virtual dynamic model optimizes, tailors hip surgery
Monday, November 27 | 9:55 a.m.-10:05 a.m. | RC204-05 | Room E450A
A virtual dynamic model of patients' hips allows physicians to optimize and individually tailor hip surgeries, say researchers from New York.
Online, mobile VR platform bolsters radiology education
Monday, November 27 | 11:20 a.m.-11:30 a.m. | SSC08-06 | Room S402AB
What is the potential for implementing virtual reality (VR) and augmented reality into radiology education? A team of researchers from Mexico, India, and the U.S. explored the possibilities in this study.
VR helps train radiologists for contrast emergencies
Monday, November 27 | 11:40 a.m.-11:50 a.m. | SSC08-08 | Room S402AB
Immersive simulation using a virtual reality (VR) headset is a viable option for training radiologists to respond to contrast emergencies such as allergic reactions, researchers from Massachusetts General Hospital have found.
4D MRI visualizes jaw and shoulder joints in action
Monday, November 27 | 3:10 p.m.-3:20 p.m. | SSE14-02 | Room E450B
Is the use of 4D MRI feasible for imaging the temporomandibular and glenohumeral joints in motion? Researchers from the U.S. and Japan believe it is.
3D software fuses CCTA and CT perfusion images
Monday, November 27 | 3:30 p.m.-3:40 p.m. | SSE04-04 | Room S504AB
3D fusion imaging software allows for one-stop-shop diagnostic assessment of coronary artery disease by combining coronary CT angiography (CCTA) and CT myocardial perfusion images, according to Swiss researchers.
4D flow MRI rapidly quantifies aortic wall shear stress
Tuesday, November 28 | 10:45 a.m.-10:55 a.m. | RC303-08 | Room S502AB
Wall shear stress calculated from 4D flow MRI is a noninvasive alternative for identifying blood vessels at risk of harmful remodeling and the development of disease, according to U.S. researchers.
Desktop 3D printer replicates patient forearm
Tuesday, November 28 | 12:15 p.m.-12:45 p.m. | IN217-SD-TUA3 | Lakeside, IN Community, Station 3
In this poster presentation, researchers from the Mayo Clinic in Rochester, MN, will explain how to manufacture phantoms customized to individual patients using a desktop 3D printer.
3D printing enriches aortic valve implantation
Tuesday, November 28 | 12:45 p.m.-1:15 p.m. | VI175-ED-TUB11 | Lakeside, VI Community, Station 11
In this poster presentation, researchers will discuss how 3D printing facilitates planning for endovascular intervention, especially for replacing aortic valves.
3D printing plus silicone molding can model stenosis
Tuesday, November 28 | 3:00 p.m.-3:10 p.m. | SSJ13-01 | Room N230B
Researchers from Switzerland have combined silicone molding and 3D printing to construct cost-effective models of vascular stenosis for angiography simulation.
3D printing fine-tunes shape of eye socket implants
Tuesday, November 28 | 3:10 p.m.-3:20 p.m. | SSJ13-02 | Room N230B
Researchers in South Korea have tapped 3D printing as a way to precisely shape orbital implants before surgical insertion. The technique promises shorter operation times and fewer postoperative complications.
3D printing enables CT- and MR-guided ablation simulation
Tuesday, November 28 | 3:30 p.m.-3:40 p.m. | SSJ20-04 | Room N229
Boston researchers have developed a 3D printing technique for creating "biomimicking" phantoms that allow for the simulation of CT- and MR-guided thermal ablation.
Technique drops cost of multicolor 3D-printed models
Tuesday, November 28 | 3:40 p.m.-3:50 p.m. | SSJ13-05 | Room N230B
U.S. researchers have fashioned a low-cost technique for creating multicolor 3D-printed models of visceral, bony, and vascular structures.
How does 4D MRI fare at detecting parathyroid lesions?
Tuesday, November 28 | 3:40 p.m.-3:50 p.m. | SSJ18-05 | Room N226
Compared with ultrasonography, 4D CT, and technetium-99m sestamibi SPECT, 4D MRI may be better at localizing parathyroid lesions safely and effectively in cases of primary hyperparathyroidism, according to researchers from India.
Are 3D-printed implants distinguishable on CT?
Tuesday, November 28 | 3:50 p.m.-4:00 p.m. | SSJ13-06 | Room N230B
Many common 3D printing materials might not be visible on CT scans because their radiodensity often matches that of soft tissue, say U.S. researchers.
What's the role of virtual reality in the reading room?
Tuesday, November 28 | 4:30 p.m.-6:00 p.m. | RC453 | Room S404AB
This refresher course led by Dr. Eliot Siegel from the University of Maryland on virtual and augmented reality will define both of these imaging techniques, highlight commercially available devices currently in use, and explore their contribution to the field of radiology now and in the future.
4D MRI assesses blood flow after cerebral bypass
Wednesday, November 29 | 3:40 p.m.-3:50 p.m. | SSM17-05 | Room N227B
Researchers from Japan have reported that 4D MRI of the brain is capable of picking up subtle hemodynamic changes missed by CT perfusion after cerebral bypass surgery.
How to use a radiographic simulator to practice x-ray exams
All day | IN114-ED-X | Digital education exhibit
Capturing flawless x-ray images demands precise timing and positioning. Researchers from Japan will demonstrate how to use their radiographic simulator to cultivate x-ray imaging skills without risking radiation exposure.
How to use cinematic rendering to visualize CT scans
All day | CA136-ED-X | Digital education exhibit
This digital education exhibit will provide background on cinematic rendering, distinguishing it from traditional 3D volume rendering, and detail its potential role in cardiovascular radiology.