Study shows feasibility of using a robot to treat brain aneurysms

Using a robot to treat brain aneurysms is feasible and could allow for improved precision when placing stents, coils and other devices, according to late breaking science presented today at the American Stroke Association's International Stroke Conference 2020. The conference, Feb. 19-21 in Los Angeles, is a world premier meeting for researchers and clinicians dedicated to the science of stroke and brain health.

Robotic technology is used in surgery and cardiology, but not for brain vascular procedures. In this study, Canadian researchers report the results of the first robotic brain vascular procedures. They used a robotic system specifically adapted for neurovascular procedures. Software and hardware adaptations enable it to accommodate microcatheters, guidewires and the other devices used for endovascular procedures in the brain. These modifications also provide the operator additional precise fine-motor control compared to previous system models.

This experience is the first step towards achieving our vision of remote neurovascular procedures. The ability to robotically perform intracranial aneurysm treatment is a major step forward in neuro-endovascular intervention."     Vitor Mendes Pereira, M.D., M.Sc., lead researcher, a neurosurgeon and neuroradiologist at the Toronto Western Hospital, and professor of medical imaging and surgery at the University of Toronto in Canada

In the first case, a 64-year-old female patient presented with an unruptured aneurysm at the base of her skull. The surgical team successfully used the robot to place a stent and then, using the same microcatheter, entered the aneurysm sac and secured the aneurysm by placing various coils. All intracranial steps were performed with the robotic arm. Since this first case, the team has successfully performed five additional aneurysm treatments using the robot, which included deploying various devices such as flow-diverting stents.

"The expectation is that future robotic systems will be able to be controlled remotely. For example, I could be at my hospital and deliver therapy to a patient hundreds or even thousands of kilometers away," Mendes Pereira said. "The ability to deliver rapid care through remote robotics for time-critical procedures such as stroke could have a huge impact on improving patient outcomes and allow us to deliver cutting-edge care to patients everywhere, regardless of geography."

"Our experience, and that of future operators of this technology, will help develop the workflows and processes necessary to implement successful robotic programs, which will ultimately help establish remote care networks in the future," Mendes Pereira said.

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Stanford Scientists Build AI Tool to Help Detect Aneurysms

Researchers have developed an artificial intelligence (AI) tool that can help detect brain aneurysms. The tool works by pinpointing areas of a brain scan that may contain an aneurysm.

“There’s been a lot of concern about how machine learning will actually work within the medical field,” said  co-lead author of the paper. “This research is an example of how humans stay involved in the diagnostic process, aided by an artificial intelligence tool.”

The tool helped clinicians correctly identify up to six more aneurysms in 100 scans. However, the team of researchers advises that further investigation is needed to evaluate generalizability of the AI tool before it can be released in real-time clinical applications. But still, the tool is a welcome addition as search for aneurysms is painfully difficult work.

The complicated search for aneurysms 

“Search for an aneurysm is one of the most labor-intensive and critical tasks radiologists undertake,” said an associate professor of radiology and co-senior author of the paper. “Given inherent challenges of complex neurovascular anatomy and potential fatal outcome of a missed aneurysm, it prompted me to apply advances in computer science and vision to neuroimaging.”

To train their algorithm, the team outlined clinically significant aneurysms detectable on 611 computerized tomography (CT) angiogram head scans.

“We labelled, by hand, every voxel – the 3D equivalent to a pixel – with whether or not it was part of an aneurysm,” said Chute, who is also co-lead author of the paper. “Building the training data was a pretty grueling task and there were a lot of data.”

After the training, the algorithm could decide for each voxel of a scan whether there is an aneurysm there. Better yet, the result of the AI tool comes up as the algorithm’s conclusions overlaid as a semi-transparent highlight on top of the scan, allowing the clinicians to still see what the scans look like without the AI’s input.

“We were interested how these scans with AI-added overlays would improve the performance of clinicians,” said co-lead author of the paper. “Rather than just having the algorithm say that a scan contained an aneurysm, we were able to bring the exact locations of the aneurysms to the clinician’s attention.”

Eight clinicians tested the novel tool by evaluating a set of 115 brain scans. With the tool, the clinicians correctly identified more aneurysms and were more likely to agree with one another on the final diagnosis.

Not designed to work with AI

The tool, believe the researchers, could now be further trained to identify other diseases. But an issue remains with this line of work. Current scan viewers and other machines are simply not designed to work with deep learning technology.

“Because of these issues, I think deployment will come faster not with pure AI automation, but instead with AI and radiologists collaborating,” said adjunct professor of computer science and co-senior author of the paper. “We still have technical and non-technical work to do, but we as a community will get there and AI-radiologist collaboration is the most promising path.”

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Brain Aneurysms & How to Spot Them

Brain aneurysms kill people suddenly every year, yet few of us know what the warning signs of this deadly attack are. Recent estimates suggest that 90% of Americans are not sure what a brain aneurysm really is. And because anything from between 6% to 9% of people actually have an aneurysm, this lack of knowledge is tragic. This necessary guide will give you important information about brain aneurysms, telling you everything you need to know, and explaining what you can do to spot the signs before the worst happens.

Lisa Colagrossi's story

Some of you may know the story of Emmy Award-nominated US news anchor, Lisa Colagrossi, who died in 2015 from a brain aneurysm, aged only 49. Lisa was a hard-working woman who began to feel excruciating head pain. After discussing it with her husband, she decided to let it pass and get on with her work. Sadly, she was taken ill and died only two weeks after the initial headache passed. 

Following this awful turn of events, Lisa’s husband established the Lisa Colagrossi Foundation (LCF) to raise public awareness about the silent killer that had taken her away from him and their two poor children. Her husband understood that it was only a lack of knowledge that prevented Lisa from going to the doctor before it was too late.

This story dramatically illustrates the need for more widely-spread knowledge about brain aneurysms. 

What is a brain aneurysm?

Neurosurgeon  describes a brain aneurysm as a weakness of the wall in one of the brain’s blood vessels. The weakness lets the wall form a bulge, due to the pressure of the blood running through the vessels. When this bulge becomes over-inflated it can rupture and seep blood into the brain tissue.

This bulge, or aneurysm, is something that anywhere from 6% to 9% of us are walking around with, unaware that it could rupture. They can even be seen on an MRI scan. Yet if the aneurysm is of a tolerably small size, doctors will not recommend invasive and dangerous surgery. 

When you suffer a rupture...

The frightening description above may give you the idea of blood squirting all over the place, but the truth is not quite so dramatic. There may be a little dribble for a few moments, but generally a platelet plug naturally forms, according to a Dr. However, even this little trickle can be fatal. Between 30% to 50% of sufferers die immediately after a rupture occurs.

The small blood leak irritates the brain tissues it comes into contact with, and this drastically increases pressure within the head. Furthermore, the loss of blood is catastrophic for the brain regions which have lost out. These areas need a constant supply of blood to function as they should.

Pressure and a lack of blood combine to induce either death or unconsciousness.

Signs and symptoms of a rupture:

Here are several symptoms that have been reported by those who have suffered a rupture:

•    An excruciating headache
•    Neck stiffness
•    Tingling face
•    Light sensitivity
•    Seizures
•    Weak limbs
•    Blurry or double vision
•    Extreme tiredness
Most of these symptoms are secondary, however, to the headache. Colagrossi’s husband describes this as “W-H-O-L” or ‘the worst headache of your life’. This could be felt anywhere and at any time, though it may be felt more strongly behind the eyes. It is hard to describe this pain, some compare it to being hit by a bolt of lightning, others have said it felt like hearing a gun shot.

What to do:

Dr.’s advice is that if you or someone close to you experiences any of these symptoms, make an emergency call for an ambulance or go to the hospital directly. Doctors have several things they can do to get rid of the pressure that results from the rupture, but that doesn’t mean that everything will be well.

Of those who receive treatment a third die, a third suffer permanent impairment, and a further third go back to normal. The goal of the Lisa Colagrossi Foundation is to help increase the number of people who can go back to normal. He says:

"If someone had been doing the work we're doing now to raise public awareness, Lisa and millions of others would still be alive".

THIS IS ONLY FOR INFORMATION, ALWAYS CONSULT YOU PHYSICIAN BEFORE HAVING ANY PARTICULAR FOOD/ MEDICATION/EXERCISE/OTHER REMEDIES.                                                                                                                                                                                                             PS- THOSE INTERESTED IN RECIPES ARE FREE TO  VIEW MY BLOG-                                                                                           https://gseasyrecipes.blogspot.com/   

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Brain Aneurysms

Brain aneurysms kill people suddenly every year, yet few of us know what the warning signs of this deadly attack are.And because anything from between 6% to 9% of people actually have an aneurysm, this lack of knowledge is tragic. This necessary guide will give you important information about brain aneurysms, telling you everything you need to know, and explaining what you can do to spot the signs before the worst happens.

 What is a brain aneurysm?
 Neurosurgeon at New York University’s Langone Medical Center, Howard Riina, MD, describes a brain aneurysm as a weakness of the wall in one of the brain’s blood vessels. The weakness lets the wall form a bulge, due to the pressure of the blood running through the vessels. When this bulge becomes over-inflated it can rupture and seep blood into the brain tissue.

This bulge, or aneurysm, is something that anywhere from 6% to 9% of us are walking around with, unaware that it could rupture. They can even be seen on an MRI scan. Yet if the aneurysm is of a tolerably small size, doctors will not recommend invasive and dangerous surgery. 

When you suffer a rupture

The frightening description above may give you the idea of blood squirting all over the place, but the truth is not quite so dramatic. There may be a little dribble for a few moments, but generally a platelet plug naturally forms, according to Riina. However, even this little trickle can be fatal. Between 30% to 50% of sufferers die immediately after a rupture occurs.

The small blood leak irritates the brain tissues it comes into contact with, and this drastically increases pressure within the head. Furthermore, the loss of blood is catastrophic for the brain regions which have lost out. These areas need a constant supply of blood to function as they should.

Pressure and a lack of blood together combine to induce either death or unconsciousness.

Signs and symptoms of rupture

 Here are several symptoms that have been reported by those who have suffered a rupture:
•    An excruciating headache
•    Neck stiffness
•    Tingling face
•    Light sensitivity
•    Seizures
•    Weak limbs
•    Blurry or double vision
•    Extreme tiredness

Most of these symptoms are secondary, however, to the headache. This could be felt anywhere and at any time, though it may be felt more strongly behind the eyes. It is hard to describe this pain, some compare it to being hit by a bolt of lightning, others have said it felt like hearing a gun shot.

 Riina’s advice is that if you or someone close to you experiences any of these symptoms, make an emergency call for an ambulance or go to the hospital directly. Doctors have several things they can do to get rid of the pressure that results from the rupture, but that doesn’t mean that everything will be well.

Of those who receive treatment a third die, a third suffer permanent impairment, and a further third go back to normal.

 this is only for your information, kindly take the advice of your doctor for medicines, exercises and so on.

https://gscrochetdesigns.blogspot.com. one can see my crochet creations
https://gseasyrecipes.blogspot.com. feel free to view for easy, simple and healthy recipes

https://kneereplacement-stickclub.blogspot.com. for info on knee replacement

Advanced treatment for brain aneurysm conducted at AIMS

Amrita Institute of Medical Sciences (AIMS) here has performed the most advanced treatment for brain aneurysm, the 'flow diverter pipeline stent', the First of its kind in a private hospital in Kerala.

The treatment was performed by a team of doctors Endovascular Division, Neurosurgery Department of AIMS, on a woman patient who had developed disturbances in vision due to a large aneurysm of the brain. The patient was discharged from the hospital within three days after 'the flow diverter pipeline stent' procedure, a press release said.

Aneurysms of the brain's blood vessels are abnormal balloon-like projections that form on the wall of an artery. When these rupture, they can cause disasters. Some patients have complex aneurysms that are large and involve multiple branches of the blood vessel. Traditionally treated with major open skull base surgery and clipping, but the surgery is very complex and required longer hospital stay, the release said.

In the flow diverter Pipeline Embolization Device (PED) which is American FDA approved, is a new alternative that allows for a more natural healing of the aneurysm avoiding a major open surgery.
The device is attached to the end of a catheter that is inserted through the Femoral artery in the right leg. The catheter is threaded into the carotid artery of the brain and into its final position where it is then expanded against the walls of the artery to block off the mouth of the aneurysm, thus cutting off the blood flow into the aneurysm which later shrinks and heals over the next few months. The device also reduces the risk of the aneurysm rupture.

The procedure considerably reduces the hospital stay of the patient to two or three days and the recovery is fast in comparison with similar open surgeries.

Amrita Hospital is one of the only six centers in India that is performing this specialized procedure. The Neurovascular center at Amrita Institute is also providing facilities to tackle the most difficult disease conditions involving the brain's blood vessels - including complex neurosurgical procedures, aneurysm coiling/stenting and stereotactic radiosurgery for vascular malformations of the brain.

The division also offers regular disease-specific screening programmes for carotid disease and stroke prevention, early detection of diseases of the brain's blood vessels.

THIS IS ONLY FOR INFORMATION, ALWAYS CONSULT YOU PHYSICIAN BEFORE HAVING ANY PARTICULAR FOOD/ MEDICATION/EXERCISE/OTHER REMEDIES.








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