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Wednesday, January 23, 2008

Thomas Laupstad and I’m a photographer from Northern Norway

Thomas Laupstad from Northern Norway

Prints of his work can be bought over at Imagekind. Just a few of his photos are available, but all photos seen on this site can be printed upon request.

Sunset picture from winter afternoon in Northern Norway - The sun has come back
January 22nd, 2008 · 8 Comments
Taken with Olympus E500 digital camera January 21st 2008. Click image for larger view.The sun has finally come back here in Northern Norway, but because of clouds I have yet to actually see it. Later in the afternoon I got to see this spectacular winter sunset and because of the warm, still weather it felt like spring time. Had to take some pictures to share the sunset with you.
Take a look at these great pictures !!!

Tuesday, January 22, 2008

Come take a look at my brand new MRI Group on Facebook leave me a message.
I hope to hear from all of you.

Monday, January 21, 2008

NIH Normal Brain study

Below are some images from our gallery. Please click for full view. Image A) Images of T1W, T2W, DTI Fiber Orientations, Fractional Anisotropy at various stages of development. Image B) Animation of a T1W image from 3 months to 11 months. C) Cortical thickness output

Click here


I found this cool place called Radrounds after going to Neuroraz webpage. This is set up alot like Facebook for radiologist. It is a place to meet with others from around the world and post intresting cases. take a look.

Sumers Radiology site nominated as Best medical blog

Check out Sumers site It is full of great content.

Sumer’s Radiology Site gets nominated as one of the finalist in Best Clinical Sciences Blog Category
Dear friends
It gives me great pleasure to share with you that my website- Sumer’s Radiology Site has been nominated into the finalists for the best clinical sciences blog on Medgadget Journal.

Here is one intresting case on cerebral vasculitis

3d medical record

The idea is to have a rendered 3D representation of the anatomy of the patient, and to use that as a basis for the record. This is reported in IEEE Spectrum.
Visualizing Electronic Health Records With “Google-Earth for the Body” By Robert N. CharetteJanuary 2008
Andre Elisseeff leads a research team at IBM’s Zurich Research Lab that in September demonstrated a prototype system that will allow doctors to view their patients’ electronic health record (eHR) using three-dimensional images of the human body. Called the Anatomic and Symbolic Mapper Engine, the system maps the information in a patient’s eHR to a 3-D image of the human body. A doctor first clicks the computer mouse on a particular part of the image, which triggers a search of the patient’s eHR to retrieve the relevant information. The patient’s information corresponding to that part of the image is then displayed, including text entries, lab results, and medical images, such as magnetic resource imaging.
Elisseeff hopes that by “opening the computer screen to the patient, better communication between doctor and patient can occur.” He also believes that by changing the computer’s role from a physical barrier to a conversation starter that the acceptance of eHRs will increase.
One of the barriers to the adoption of EMR is that there are many different systems, and they all require training to use to maximum effect. If the interface is too complex, it will be difficult for it to become widely used.
This could be a usefull tool for comunication between medical profesionals. being able to see where the patients tumor is in a 3d space is very important in aspects like biopsys. We use MRI, CT, and ultrasound for that but this could prove an aditional benifit if it was easy to access in the patients EMR. It would give the doctors a quick look into history and show areas with pathology. I can see some usefullness to this program.

Laser infared energy for stroke treatment

Laser Light for Stroke Treatment
Filed under: Neurology
PhotoThera, a company out of Carlsbad, California, is currently conducting clinical trials of their experimental laser system for the treatment of strokes. Using a near-infrared laser that is capable of reaching the brain through the scalp, it is thought that the light can help reinvigorate cells in the ischemic milieu.
To prevent Quire's [Linda Quire, stroke patient at University of Wisconsin Hospital in Madison --ed.] penumbra from going over to the dark side, two things had to occur.
First, the laser treatment would have to work. Although animal studies and limited human research suggest it might be effective, the treatment still is in the experimental stage and its value has yet to be proved.
Second, Quire would have to get the actual laser treatment. Under the protocol of the clinical trial, half the patients get the treatment and half get a sham treatment. Neither the doctor nor the patients know who is getting treated.
Essentially, Quire had a 50-50 chance of receiving an iffy treatment.
Still, there is reason to believe the laser treatment, which can be given up to 24 hours after the onset of symptoms, might be beneficial.
An earlier trial involving 120 patients found that 70% who got the laser treatment had a successful outcome, such as complete recovery from their stroke, compared with 51% for those who got a sham treatment.
"The prospects are very good," said Harry Whelan, a neurologist who practices at Children's Hospital of Wisconsin and Froedtert Hospital.
Whelan, who has done extensive research on so-called photo therapy, said that when infrared laser light reaches brain cells, it improves energy metabolism in those cells, which can be starved of glucose and other energy sources when the blood supply is inhibited. The laser light activates an enzyme that controls production of an energy source known as ATP.
"There is a large area (of brain cells) fighting for survival," said Whelan, a professor of neurology at the Medical College of Wisconsin who was not a part of the study.
Indeed, using laser light might be beneficial in other neurological disorders, said Whelan, who is researching whether it might help in the treatment of Parkinson's disease and diabetic retinopathy.
More at the Milwaukee Journal Sentinel...
Company page with few details: PhotoThera

very low field MRI may be better for tumors.

HEAD SHOTS: Four slices of researcher Vadim Zotev’s head are the first medical images made with low-magnetic-field MRI.
Researchers at Los Alamos National Laboratory have made what they say are the first images of a human brain using magnetic fields a hundred-thousandth the strength of conventional magnetic resonance imaging (MRI), paving the way for lower cost medical images that might be better at detecting tumors.
Though the resolution is much lower than that in conventional MRIs, the images “show we have a potential for pretty good results,” says Vadim Zotev, a researcher in Los Alamos’s applied modern physics group. (That’s his head in the images.)
MRI works by ­subjecting the human body to a strong magnetic field, which causes the ­proton in the nucleus of each hydrogen atom in the body to line up along the magnetic field’s lines of force. An RF pulse briefly knocks the ­protons out of alignment. As they snap back into position, the ­protons emit an RF signal that can be used to construct a three-dimensional image. Most MRI machines have a magnetic field of about 1.5 teslas, strong enough to yank metal objects out of the hands of the unwary.
Zotev’s machine, however, generates a magnetic field of only 46 microteslas, roughly the same strength as the Earth’s magnetic field. Few protons align at this lower strength, so he must first apply a 1-­second prepolarization pulse—at 30 milli­teslas, it’s about as strong as a small bar magnet—which primes the protons to respond to the microtesla field. To detect the weaker signals, he uses an array of seven super­sensitive magnetometers called superconducting quantum interference devices, or SQUIDs. In a SQUID, ­electrons are in an odd ­quantum state that allows individual ­electrons to move in two directions at once and interfere with themselves. The amount of interference depends on the strength of an external magnetic field and translates into a measurable resistance to the flow of current in the SQUID.
A weak magnetic field MRI machine might cost as little as US $100 000 compared with $1 million or more for a standard MRI system
Because it needs fewer costly magnets, a weak­magnetic-field MRI machine might cost as little as US $100 000, compared with $1 million or more for a standard MRI system, says Zotev. But perhaps the most exciting thing about low-field imagers is that they can also perform another imaging technique, magneto­encephalography (MEG), which, conveniently, also relies on SQUIDs. MEG measures the magnetic fields produced by brain activity and is used to study seizures. Putting the two imaging modes together could mean matching images of brain activity from MEG with images of brain structure from MRI, and it might make for more precise brain surgery.
Low-field MRI has other advantages, says John Clarke, a physicist at the University of California, Berkeley, who uses a single-SQUID MRI device to image tissue samples. “I’m personally quite excited about the idea of imaging tumors” with low-field MRI, he says. The difference between cancerous and noncancerous tissue is subtle, particularly in breast and prostate tumors, and the high-field strengths used in conventional MRI can drown out the signal. But low-field MRI will be able to detect the differences, Clarke predicts. A low-field MRI might also allow for scans during surgical procedures such as biopsies, because the weaker magnetic field would not heat up or pull at the metal biopsy needle.
Groups in Europe and Japan are also developing low-field MRI, both for identifying tumors and for matching with MEG. Zotev is working on improving the image quality, perhaps by increasing the strength of the prepolarization field, and studying what signals might be read in low-field MRI that conventional MRI might miss. He says that, with enough focus on the engineering issues, practical devices might be ready for clinical trials within a ­couple of years.



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