Showing posts with label medical. Show all posts
Showing posts with label medical. Show all posts

Friday, April 20, 2007

Can rocket science build a better brain surgeon?

Doctors and scientists at the University of Calgary have developed a surgical robot that's MRI compatible. That means that a brain surgeon sitting at a computer screen can remotely perform surgery on a patient while getting detailed MRI images of the surgery. Pretty neat!

"Many of our microsurgical techniques evolved in the 1960s, and have pushed surgeons to the limits of their precision, accuracy, dexterity and stamina," says Dr. Sutherland, professor of neurosurgery, University of Calgary Faculty of Medicine and the Calgary Health Region. "NeuroArm dramatically enhances the spatial resolution at which surgeons operate, and shifts surgery from the organ towards the cell level."

Designed to be controlled by a surgeon from a computer workstation, neuroArm operates in conjunction with real-time MR imaging, providing surgeons unprecedented detail and control, enabling them to manipulate tools at a microscopic scale. Advanced surgical testing of neuroArm is currently underway, followed by the first patient, anticipated for this summer.


The neuroArm should significantly improve brain surgery by allowing neurologists to do things they can only dream about today.

"The best surgeons in the world can work within an eighth of an inch. NeuroArm makes it possible for surgeons to work accurately within the width of a hair," Doc Seaman says. "This will put us on the world stage and will help attract more top people in medicine and surgery, which will benefit the university and the community as a whole."


And it really is rocket science.

A global search for robotics expertise led Sutherland to MDA, a perfect fit for neuroArm because of the company's background in creating specialized space robots, used aboard NASA space shuttles and the International Space Station.

"NeuroArm is a great fit for us, allowing us to apply our world-renowned space solutions to medical applications that will benefit patients here on Earth," says Bruce Mack, vice-president of development programs of MDA's Brampton operations. "The combination of our remote operation and sensory information expertise, coupled with our manipulation technologies, will enable improved decision making and performance in the operating theatre."

Developing neuroArm required an international collaboration of health professionals, physicists, electrical, software, optical and mechanical engineers to build a robot capable of operating safely in a surgical suite and within the strong magnetic field of the intraoperative MRI environment.


A collaboration between brain surgeons and rocket scientists: there has to be a joke in there somewhere.

Tuesday, September 05, 2006

Fresh fruits and vegetables are good for you ... but bad for me

Great news! It turns out that "rabbit food" is actually good for you. Who'd a thunk it?

A new UCLA/Louisiana State University study of dietary data on more than 17,500 men and women finds consumption of salad and raw vegetables correlates with higher concentrations of folic acid, vitamins C and E, lycopene and alpha and beta carotene in the bloodstream.

Published in the September edition of the peer-reviewed Journal of the American Dietetic Association, the study also suggests that each serving of salad consumed correlates with a 165 percent higher likelihood of meeting recommended dietary allowances (RDA) for vitamin C in women and 119 percent greater likelihood in men.


Wow, a shocker! So maybe an apple a day actually does keep the doctor away. Unless you're me, that is.

You see, I'm allergic to raw apples. You read that right: raw apples. I'm perfectly okay with cooked apples. I could eat apple pie until I get sick (from eating too much pie) without having even the slightest reaction. But pop a thin slice of Granny Smith (for some reason McIntosh apples don't bother me nearly as badly) in my mouth, and within seconds my lips and gums will itch and throb while my throught will itch worse than if I had a feather stuck back there. I'm the same way with carrots. I could easily live on soups and stews that are overloaded with carrots, but raw? No way.

Which brings me to a necessary tangential tirade. Why does practically everyone insist on puttng shredded carrots in their salads? That really pisses me off! Do you have any idea how hard it is to pick out every little shred of carrot from a salad? I'll tell you: it's not even worth trying. But roughly 90% of the time that I eat out, I have to pass on the salad. And I LOVE a really good salad. It's not fair!

To varying degrees, I'm also allergic to various other raw fruits and vegetables, including almonds, peaches, pears and cherries. Cherries are kind of funny for me. I can't stand any of the "denatured" varieties, be it Marachinos or that sickeningly sweet and sticky topping some people put on their cheesecakes (strawberries or blueberries are far superior). But I actually like raw cherries ... at least for the few seconds before my mouth explodes into a volcano of itching and swelling.

The common thread with all my food allergies seems to be that cooking gets rid of the allergen. And the worst reaction that I've had is merely irritation (albeit major irritation). On three separate occasions, I've witnessed people being taken away in ambulances after going into anaphylaxis from eating shellfish and peanuts (the third was a bee sting). Luckily, I've never gone anaphylactic. I'm also lucky to have the cooking solution; people with peanut or shellfish allergies don't have this option. I always thought of my food allergies as being somewhat unusual.

My seasonal pollen allergies are anything but, though. I get really bad springtime allergies. It turns out I'm allergic to just about every variety of spring-blooming grass that grows wild in fields and is planted on peoples lawns. It sure sucks to be me. Surprisingly, I'm not allergic to such common allergens as mold spores and dust mites. I am allergic to birch, though. I remember when I was a child, coming home from the doctor's office where I had just had a skin scratch test, asking my parents what a birch was. After being shown the offending white-barked tree, I proceeded to naively avoid it from then on, as if it was poison ivy.

It might seem odd that I've spent as much space as I have on birch. I seem to recall that I had a pretty big reaction to the birch skin scratch, but being that birch is not anywhere near as ubiquitous as all the grasses I'm allergic to, it really has to be considered a minor player in my allergy profile. Or maybe not?

Just this weekend I found out about oral allergy syndrome, or OAS (I promise not to tell the Western hemisphere alliance about this). It turns out that allergies to raw fruit and vegetables is closely related to pollen allergies. Go figure!

OAS symptoms are the result of a "cross-reactivity reaction" between allergy antibodies directed toward target pollen proteins with similar proteins found in other parts of plants. Common symptoms of OAS included an itchy mouth and throat with mild swelling immediately after eating fresh fruits or vegetables.


I was pretty fascinated by all this, but I was absolutely floored by the what came next.

OAS can also occur in people with birch tree allergy symptoms when they eat peaches, apples, pears, cherries, carrots, hazelnuts, kiwis, and almonds, the AAAAI said.

Generally, cooking foods will eliminate an OAS reaction, according to the AAAAI.

THAT'S ME!!! And my allergy even has a special name. All of a sudden I don't feel like such a freak anymore.
;-)

UPDATE:

Since I get several hits a day to this page from people Googling "itchy, mouth, raw, vegetables" etc, I thought I would add a few extra resourses for OAS.

Here's the Wikipedia page for OAS. It has a nice chart showing which vegetables relate to which pollens.

Here's the CHOP (Children's Hospital Of Pennsylvania) OAS website. It's an all-around good resourse.

And finally, here's a link to AllAllergy's OAS page. It contains links to 5 separate articles on OAS as well as a ton of comments that express the same sentiments as this post and those who have commented here.

Finally, I'd like to thank all of you who have commented on this post so far. When I first wrote this, I saw it as just a personal revelation. I never imagined that I would actually be helping people find out the truth about what was happening to them.