Stroke treatment can be given even later than we thought.

Sept. 24, 2008 – The brain clot-busting drug tPA works better the sooner it’s given after stroke, but now a new study shows the treatment can help even if given up to 4.5 hours later.

During a stroke, a clot blocks the flow of blood to parts of the brain. It doesn’t take long for these parts of the brain to start dying. The clot-dissolving drug tPA (tissue plasminogen activator) restores blood flow to the brain, but the drug must be given soon after a stroke to save brain tissue.

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TOP 13 reasons to date an x-ray tech

Top 13 Reasons to Date an X-ray Tech

Description:
1. We do our best work in the dark

2. We can see through your clothes
3. We know all the positions
4. We are well developed
5. The chemistry is always right
6. We know what buttons to push
7. We have all the right techniques
8. We know how to warm up a tube
9. We know how to get the best penetration
10. When you need it now, we make it wet.1
1. Human anatomy is common knowledge.
12. We do it on the table and sometimes we slip it in the bucky.
13. Radiation physics: Hard Beam + Tight Collimation = Adequate penetration

Posted in 1.

NEW MRI Searchable Database

There is a new service available for hospitals and clincs that can determine the mri safety of implanted devices . check out there website.
http://www.DoctorDoctor.biz

SEARCHABLE DATABASE: THE NEWEST TOOL FOR MRI IMPLANT SAFETY
The MRI safety status of medical implant devices can be difficult to track because many manufacturers 1.) Change their names; 2) Sell their medical devices to other companies; 3.) Go out of business; 4) Discontinue manufacturing of certain devices; 5.) Merge with other companies; or holding companies move medical device ownership from company to company. Dozens of these transactions transpire annually, bringing confusion and obfuscation to MRI technologists, who need to be certain of an implanted device’s safety status before scanning. After seven or eight years of this merger and acquisition activity, the status of many implants can become impossible to find.

MRI technologists, too often given the sketchiest of information, can spend hours looking for safety status, or materials of construction, to determine if a scan is safe. Even if the search is successful, most sites have no method to ultimately store the data or retrieve it for use later. An MRI site’s source of implant safety information can quickly degrade to a paperback book and an unmanageable manila folder of faxes.

Compounding the problem, are new safety definition standards; more powerful scanners and implants from overseas. Faced with an “MR Conditional” device, technologists must account for the static field strength, spatial gradient field, SAR and time duration of the scan. According to a recent JCAHO Sentinel Event: “All implants should be checked against product labeling or manufacturer literature specific to that implant, or peer-reviewed published data regarding the device or implant in question. Technologists should be provided with ready access to this information.” What JCAHO did not state is where this information is supposed to come from!

A searchable database to store MRI specific information with multiple search options to retrieve manufacturer’s information and published data, would be an invaluable tool to free up technologist’s time and eliminate duplicate research for implant safety information!

MagResource LLC has developed a searchable database to track the MRI safety status of medical implants through this whirlwind of economic and technological turmoil. The Internet database features daily rather than yearly updates to provide site-users with instant access to the latest information. User sites enter the Online Database without login or password. When a device is not found in the database, MagResource will endeavor to find it. Free trials and in-service for MRI sites at: http://www.DoctorDoctor.biz

Medtronic MRI Pacing System Shows Promise

Initial safety and efficacy data recently presented at the European Society of Cardiology Congress has shown that the investigational EnRhythm MRI SureScan Pacing System from Medtronic Inc., of Minneapolis, may be a potential solution for patients receiving their first pacemaker and needing an MRI scan.

Results from the worldwide clinical study showed no MRI-related complications and no arrhythmia or asystole during MRI scans conducted on patients. Data also demonstrated that hearts responded appropriately to the level of electrical stimulation they received from the device.

According to Medtronic, a small number of patients experienced implant complications consistent with rates for other pacemaker implant procedures, but none were related to the MRI technology.

The EnRhythm MRI SureScan System Clinical Trial is a prospective, randomized, controlled, unblinded, multi-center study involving 470 individuals. The expected study duration and follow up time is approximately 30 months. (source)

pink floyd- sad to see you go Wright. shine on you

It’s the feeling you get the first time you here shine one you crazy dimond. If you know the song you know what I mean. I remember, it was an experience unlike anything I had ever heard. This was Floyd. I am truely sad to here Richard Wright is gone. It is an end of an era. Floyd was more than a band, It was a revolution in musical inginuity. Thank you Richard Wright, Syd, Roger, David, Nick. You have made your place in history.
You will always shine,
Chris
Richard Wright, the founding member of Pink Floyd whose piano and synthesizer work played a critical part in the pioneering British psychedelic rock band’s ethereal sound, died Monday after a short battle with cancer, his spokesman said. He was 65.

Doug Wright, who is not a relative, said Wright died at his home in England and that his family did not wish to release any more information, the Associated Press reported.

 
Wright never achieved the high public profile of the group’s three key figures — founding singer-guitarist Syd Barrett and the often-feuding co-leaders, singer-bassist Roger Waters and singer-guitarist David Gilmour, who joined shortly before Barrett left in 1968.

But he wrote or co-wrote many of the band’s songs, and frequently provided a crucial component of the Pink Floyd sound. On the group’s landmark “Dark Side of the Moon” album, Wright was responsible for the thick electric piano chording on the 1973 hit “Money” as well as the swirling organ lines and classically inspired grand piano on “Us and Them,” a song he wrote with Waters.

He also co-wrote “Shine On You Crazy Diamond,” one of the group’s signature songs from “Wish You Were Here,” the second of five Floyd albums to reach No. 1. The nine-part epic song is a salute to Barrett, who, after leaving the group, retreated into mental illness, often attributed to his drug use. He died in 2006.

Wright had no explanation for the astonishing longevity of the “Dark Side” album — it spent more time, 741 weeks, on the Billboard album chart than any other in history — or the extraordinary following the band inspired. The 1979 album “The Wall” spent 15 weeks at No. 1 and has been certified for worldwide sales of 23 million copies by the Recording Industry Assn. of America, putting it third on the list of all-time best sellers, behind “The Eagles: Their Greatest Hits 1971-1975” and Michael Jackson’s “Thriller.”

“I know we’ve made some great songs and great music,” Wright told Billboard last year, “but I can’t tell you why we’re so popular.”

DSI

http://link.brightcove.com/services/link/bcpid263777539/bctid1709855696

 

The typical brain scan shows a muted gray rendering of the brain, easily distinguished by a series of convoluted folds. But according to Van Wedeen, a neuroscientist at Massachusetts General Hospital, in Boston, that image is just a shadow of the real brain. The actual structure–a precisely organized tangle of nerve cells and the long projections that connect them–has remained hidden until relatively recently.

Traditional magnetic resonance imaging, or MRI, can detect the major anatomical features of the brain and is often used to diagnose strokes and brain tumors. But advances in computing power and novel processing algorithms have allowed scientists to analyze the information captured during an MRI in completely new ways.

Diffusion spectrum imaging (DSI) is one of these twists. It uses magnetic resonance signals to track the movement of water molecules in the brain: water diffuses along the length of neural wires, called axons. Scientists can use these diffusion measurements to map the wires, creating a detailed blueprint of the brain’s connectivity.

On the medical side, radiologists are beginning to use the technology to map the brain prior to surgery, for example, to avoid important fiber tracts when removing a brain tumor. Wedeen and others are now using diffusion imaging to better understand the structures that underlie our ability to see, to speak, and to remember. Scientists also hope that the techniques will grant new insight into diseases linked to abnormal wiring, such as schizophrenia and autism.(source)

see video here

 

 

 

Brain mapping: A variation on MRI called diffusion spectrum imaging allows scientists to map the neural fibers that relay signals in the brain. Each fiber in the image represents hundreds to thousands of fibers in the brain, each traveling along the same path.
Credit: George Day, Ruopeng Wang, Jeremy Schmahmann, Van Wedeen, MGH