PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

Assessing the accuracy of artery models

Assessing the accuracy of artery models
2023-04-11
(Press-News.org) Testing the material used to build models of arteries reveals their suitability for use in medical education and surgical planning.

Hokkaido University researchers have analyzed the suitability of a smooth, flexible and transparent material used to make model arteries for use in medical teaching and to plan for surgery on individual patients. Their work is described in the Journal of Vascular and Interventional Radiology.

Ever-improving 3D printing technology can create models of blood vessels that are significantly more realistic than those made with more conventional methods, and also much more suitable for surgical practice than virtual simulations that have also been used. All types of models and simulations are applied in two key situations. They assist in medical education, allowing students of general medicine and of surgery to learn how to handle and manipulate blood vessels before applying their skills on patients. The sophistication of 3D printing also allows highly accurate models of an individual patient’s artery and vein structure to be built from radiology scans, allowing practice on a model before performing complex surgery.

The Hokkaido team has improved assessment of the 3D printing technology by studying a material used to make model arteries that are transparent to allow careful inspection while recreating the flexibility, smoothness and slipperiness of real arteries. They tested the accuracy and suitability of the modeling materials by comparing its properties with pig arteries, measuring parameters including adhesive and tensile strength, compressibility and friction characteristics.

“We hypothesized that a tailored 3D modeling material called Flexible 80A resin would effectively simulate the properties of real arteries,” says interventional radiologist Ryo Morita of the Hokkaido research group. “Our studies confirmed the material’s suitability, while at the same time identifying differences between the model material and the pig arteries that could guide further improvements.”

The researchers point out future research that will be needed to address some limitations of this early work. Moving on to use real human arteries for comparison would improve the relevance for working on patients. The methods used in this initial study could also be applied to a variety of other modeling resins to identify those most suitable. They would also like to investigate how differences they identified in tensile strength between the models and the pig arteries might affect the use of the models by physicians.

While creating custom models for an individual patient can be of great assistance in preparing for surgery, it is expensive and time-consuming. This limits the use of personalized models to only the most anatomically challenging cases. “Making and storing models made with improved 3D printing processes could build a bank of examples for use in preoperative planning and for training,” Morita concludes.

END

[Attachments] See images for this press release:
Assessing the accuracy of artery models Assessing the accuracy of artery models 2 Assessing the accuracy of artery models 3

ELSE PRESS RELEASES FROM THIS DATE:

Combination therapy overcomes BET inhibitor resistance

Combination therapy overcomes BET inhibitor resistance
2023-04-11
Scientists at St. Jude Children’s Research Hospital developed a novel combination therapy approach for a leukemia subtype harboring rearrangements in the KMT2A gene. The approach overcomes the cancer’s drug resistance, without adding toxicity. The study was published today in Proceedings of the National Academy of Science. Bromodomain and extra-terminal domain (BET) inhibitors have been shown to provide therapeutic benefits against many different cancers. However, the mechanisms governing response and resistance to this class of therapies are poorly understood. Scientists at St. Jude conducted CRISPR ...

Maryam Baldawi named winner of the 2023 AADOCR Gert Quigley Fellowship

2023-04-11
Alexandria, VA – The American Association for Dental, Oral, and Craniofacial Research (AADOCR) has announced Maryam Baldawi as the 2023 AADOCR Gert Quigley Government Affairs Fellow.  The Gert Quigley Fellowship is designed to familiarize graduate-level students with the federal legislative process in the context of dental, oral, and craniofacial research and the oral health care delivery system. As part of the Fellowship, Baldawi will complete a short work stay at AADOCR headquarters in Alexandria, VA. She will serve a one-year term as a voting member of AADOCR’s Government Affairs Committee and as the government affairs liaison to the AADOCR National Student ...

Parathyroidectomy shows no effect on kidney function in older adults with hyperparathyroidism

2023-04-11
1. Parathyroidectomy shows no effect on kidney function in older adults with hyperparathyroidism Subanalysis suggests the procedure may preserve kidney function in younger patients if done early Abstract: https://www.acpjournals.org/doi/10.7326/M22-2222 URL goes live when the embargo lifts An emulated randomized trial performed using observational data from more than 43,000 adults with primary hyperparathyroidism found that parathyroidectomy had no estimated effect on long-term kidney function in older adults when compared to observation. However, ...

Parental knowledge and attitudes toward HIV preventive treatment for their adolescent children

2023-04-11
HIV pre-exposure prophylaxis (PrEP), a daily regimen of two medications in a single pill, could prevent many new HIV infections, especially in at-risk populations. For example, research shows PrEP could prevent around 70 percent of new HIV infections in adolescent cisgender sexual minority males (ASMM) and transgender and gender diverse adolescents (TGDA), populations that are disproportionately affected by the disease. However, despite growing awareness of PrEP among ASMM/TGDA, uptake of the treatment is still less than 5 percent. A new study published in the journal Sexuality Research and Social Policy looks ...

Texas A&M researchers discover new circuit element

2023-04-11
Dr. H. Rusty Harris, associate professor in the Department of Electrical and Computer Engineering at Texas A&M University, has identified a new circuit element known as a meminductor. A circuit element is an electrical component used to help direct and control the flow of electricity through an electrical circuit. The classical three are known as the resistor, capacitor and inductor. Two additional circuit elements, the memristor and the memcapacitor, were only discovered in the past 15 years. These newer circuit elements are known as the mem- versions of their classical counterparts, and their current and voltage properties are dependent ...

Endocrine Society alarmed by Texas court ruling banning mifepristone

2023-04-11
WASHINGTON—The Endocrine Society is deeply concerned about a Texas ruling that reverses the U.S. Food and Drug Administration’s (FDA) approval of mifepristone, a drug used to treat Cushing’s syndrome and to end pregnancy safely and effectively. Last week, two conflicting federal court decisions in Texas and Washington state left access to mifepristone unclear for both the treatment of Cushing’s syndrome and for medical abortions. The Texas court ruled to ban mifepristone, taking away the FDA's authority to regulate the safety of medications. The judge paused ...

Mint flavor makes vape juice more toxic, damaging to lungs

Mint flavor makes vape juice more toxic, damaging to lungs
2023-04-11
PITTSBURGH, April 10, 2023 – Adding mint flavor to e-cigarette liquids produces more vapor particles and is associated with worse lung function in those who smoke, report researchers from the University of Pittsburgh in Respiratory Research today. Using a specially designed robotic system that mimics the mechanics of human breathing and vaping behavior, researchers showed that commercially available e-cigarette liquids containing menthol generate a greater number of toxic microparticles compared to menthol-free juice. An accompanying analysis of patient records from a cohort of e-cigarette smokers revealed that menthol vapers took shallower breaths and ...

View interpolation networks for reproducing the material appearance of specular objects

View interpolation networks for reproducing the material appearance of specular objects
2023-04-11
With the spread of Internet shopping nowadays, purchasing products online has become possible and common. However, in many cases, because users are presented with few photographs of products and cannot actually hold the products, they may be unable to perceive the material of the products. In this study, we proposed view interpolation networks for reproducing material appearances. We implemented U-Net, an existing image transformation network, and a network that used additional information in the middle layer of U-Net. The networks were trained to generate images from the intermediate ...

Unrolling a rain-guided detail recovery network for singleimage deraining

Unrolling a rain-guided detail recovery network for singleimage deraining
2023-04-11
Rain streaks of different shapes, sizes, and directions obscure image background scenes, resulting in image degradation, including intensity fluctuation, color distortion, or even content alteration. Such degradation impairs the visual quality of an image and leads to undesirable performance of many outdoor computer vision systems that require high-quality images. Therefore, image deraining must be performed, and effective deraining methods should be developed. In this study, we addressed the problem of single-image rain removal. We propose a novel unrolling rain-guided detail recovery network ...

Impact of coronavirus on states’ fertility rates tracked with economic, social, and political divides

2023-04-11
Experts have found that at the start of the COVID-19 outbreak in early 2020, Americans chose not to become pregnant as they grappled with stay-at-home restrictions, anxiety, and economic hardship. Now, a new study led by researchers at NYU Grossman School of Medicine shows that some states actually experienced steeper decreases in fertility than others. The findings revealed that nine months after the pandemic began, there were 18 fewer births a month per 100,000 women of reproductive age across the U.S. compared with the year ...

LAST 30 PRESS RELEASES:

Thirty-year mystery of dissonance in the “ringing” of black holes explained

Less intensive works best for agricultural soil

Arctic rivers project receives “national champion” designation from frontiers foundation

Computational biology paves the way for new ALS tests

Study offers new hope for babies born with opioid withdrawal syndrome

UT, Volkswagen Group of America celebrate research partnership

New Medicare program could dramatically improve affordability for cancer drugs – if patients enroll

Are ‘zombie’ skin cells harmful or helpful? The answer may be in their shapes

University of Cincinnati Cancer Center presents research at AACR 2025

Head and neck, breast, lung and survivorship studies headline Dana-Farber research at AACR Annual Meeting 2025

AACR: Researchers share promising results from MD Anderson clinical trials

New research explains why our waistlines expand in middle age

Advancements in muon detection: Taishan Antineutrino Observatory's innovative top veto tracker

Chips off the old block

Microvascular decompression combined with nerve combing for atypical trigeminal neuralgia

Cutting the complexity from digital carpentry

Lung immune cell type “quietly” controls inflammation in COVID-19

Fiscal impact of expanded Medicare coverage for GLP-1 receptor agonists to treat obesity

State and sociodemographic trends in US cigarette smoking with future projections

Young adults drive historic decline in smoking

NFCR congratulates Dr. Robert C. Bast, Jr. on receiving the AACR-Daniel D. Von Hoff Award for Outstanding Contributions to Education and Training in Cancer Research

Chimpanzee stem cells offer new insights into early embryonic development

This injected protein-like polymer helps tissues heal after a heart attack

FlexTech inaugural issue launches, pioneering interdisciplinary innovation in flexible technology

In Down syndrome mice, 40Hz light and sound improve cognition, neurogenesis, connectivity

Methyl eugenol: potential to inhibit oxidative stress, address related diseases, and its toxicological effects

A vascularized multilayer chip reveals shear stress-induced angiogenesis in diverse fluid conditions

AI helps unravel a cause of Alzheimer's disease and identify a therapeutic candidate

Coalition of Autism Scientists critiques US Department of Health and Human Services Autism Research Initiative

Structure dictates effectiveness, safety in nanomedicine

[Press-News.org] Assessing the accuracy of artery models