Navigation Links
MRI-safe Motor Makes Robotic Biopsies Possible

Engineers of Johns Hopkins claims to have invented a motor without metal or electricity that can be used to perform cancer biopsies and therapies guided// by magnetic resonance imaging.

The motor that drives the devices can be so precisely controlled by computer that movements are steadier and more precise than a human hand.

"Lots of biopsies on organs such as the prostate are currently performed blind because the tumors are typically invisible to the imaging tools commonly used," says Dan Stoianovici, Ph.D., an associate professor of urology at Johns Hopkins and director of the robotics lab. "Our new MRI-safe motor and robot can target the tumors. This should increase accuracy in locating and collecting tissue samples, reduce diagnostic errors and also improve therapy."

A description of the new motor, made entirely out of plastics, ceramics and rubber, and driven by light and air, was published in the February issue of the IEEE/ASME Transactions on Mechanotronics.

The challenge for his engineering team was to overcome MRI’s dependence on strong magnetic interference. Metals are unsafe in MRIs because the machine relies on a strong magnet, and electric currents distort MR images, says Stoianovici. The team used six of the motors to power the first-ever MRI-compatible robot to access the prostate gland. The robot currently is undergoing preclinical testing.

"Prostate cancer is tricky because it only can be seen under MRI, and in early stages it can be quite small and easy to miss," says Stoianovici.

The new Johns Hopkins motor, dubbed PneuStep, consists of three pistons connected to a series of gears. The gears are turned by air flow, which is in turn controlled by a computer located in a room adjacent to the MRI machine. "We’re able to achieve precise and smooth motion of the motor as fine as 50 micrometers, finer than a human hair," says Stoianovici.

The robot goes alongside the patient in the MRI scanner and is controlled remotely by observing the images on the MR. The motor is rigged with fiber optics, which feeds information back to the computer in real time, allowing for both guidance and readjustment.

"The robot moves slowly but precisely, and our experiments show that the needle always comes within a millimeter of the target," says Stoianovici. This type of precision control will allow physicians to use instruments in ways that currently are not possible, he says.

"This remarkable robot has a lot of promise - the wave of the future is image-guided surgery to better target, diagnose and treat cancers with minimally invasive techniques," says Li-Ming Su, M.D., an associate professor of urology and director of laparoscopic and robotic urologic surgery at the Brady Urological Institute at Hopkins.

Source-Eurekalert/
'"/>




Related medicine news :

1. Drug Used To Improve Lung Function In Infants Could Slow Down Motor Coordination
2. Motorcycles Cause Greater Pollution
3. Respirator Can Improve Quality Of Life Of Motor Neurone Disease Patients
4. Fetal Neural Grafts Improves Motor and Cognitive Function in Huntington Patients
5. Motor Vehicle Accidents in Men Related To BMI
6. Understanding Basic Motor Skills
7. Gujarat Ministers Motorbike Campaign Against Female Foeticide
8. Effect Of Alcohol On Motor Skills
9. Polyunsaturated Fat, Vitamin E Lowers Risk Of Motor Neurone Disease
10. Discovery of Agile Molecular Motors Could Aid in Treating Motor Neuron Diseases
11. Fines Paid By Speeding Motorists Used in Funding Spinal Cord Injury Research
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/26/2017)... ... ... Yisrayl Hawkins, Pastor and Overseer at The House of Yahweh in Abilene, ... Agreements being discussed by President Donald Trump and the rest of the world. Donald ... up peace talks in the continuous battle between Israel and Palestine. The world’s eyes ...
(Date:5/26/2017)... ... May 26, 2017 , ... Dr. Alex Rabinovich, a highly-skilled ... a new, informational blog post on insurance options. If a Bay Area patient has ... help save time and money. Visiting an in-network provider for a second opinion can ...
(Date:5/26/2017)... ... May 26, 2017 , ... Centennial-based ... of proceeds from its 14th Annual Clays for Kids fundraiser, to be held ... Bennett, Colorado. , As part of BluSky’s partnership with The Adoption Exchange, ...
(Date:5/26/2017)... ... ... Water damage to the flooring of several classrooms at The Fort Lee ... a number of critical issues to address before students could return to classes. , ... or no disruption to class schedules. Second, the project had to comply with New ...
(Date:5/24/2017)... , ... May 24, 2017 , ... Dr. Alan I. ... in New York City. He is known for his distinguished expertise and experience ... surgery, Dr. Benvenisty holds sub-specialty training in treating renovascular disease and aortic aneurysm ...
Breaking Medicine News(10 mins):
(Date:5/10/2017)... Hologic, Inc. (Nasdaq: HOLX ) ... second quarter ended April 1, 2017 .   GAAP ... compared to the prior year period as the sale ... gain, while non-GAAP diluted EPS of $0.50 increased 6.4%.  ... constant currency terms.  Excluding the effects of blood screening ...
(Date:5/10/2017)... 10, 2017 Radiology has become the number ... have also spiraled to the number one ranking as ... than ever before as the most complete and reliable ... with lower back pain an MRI may confirm a ... pain, resulting in entirely different treatment protocols.  In these ...
(Date:5/9/2017)... WASHINGTON , May 9, 2017  Demonstrating ... the board of directors for the Pharmaceutical Research ... criteria for membership. Biopharmaceutical companies will now have ... in order to be eligible to join PhRMA. ... criteria, the board is sending a clear message ...
Breaking Medicine Technology: