Navigation Links
3-D ultrasound scanner could guide robotic surgeries

Duke University engineers have shown that a three-dimensional ultrasound scanner they developed can successfully guide a surgical robot.

The scanner could find application in various medical settings, according to the researchers. They said the scanner ultimately might enable surgeries to be performed without surgeons, a capability that could prove valuable in space stations or other remote locations.

"It's the first time, to our knowledge, that anyone has used the information in a 3-D ultrasound scan to actually guide a robot," said Stephen Smith, professor of biomedical engineering at Duke's Pratt School of Engineering.

Smith and Eric Pua, a Pratt graduate student who participated in the research, reported the findings in the cover article of the November 2006 issue of the journal IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control http://www.ieee-uffc.org/tr/covers/2006toc.htm#nov06.

The work was supported by the National Institutes of Health and the National Science Foundation.

In their demonstration, the researchers used 3-D ultrasound images to pinpoint in real time the exact location of targets in a simulated surgical procedure. That spatial information then guided a robotically controlled surgical instrument right to its mark.

The scanner could be coupled to the surgeon-operated robots that are being increasingly used for performing minimally invasive "laparoscopic" surgeries on the heart or other organs, Smith said. In such operations, surgeons work through tiny "keyhole" incisions, and the new scanner would provide surgeons a more realistic view of the organ they are working on.

"All the technology is available," Smith said. "We just need to make the connections between the ultrasound scanner and the robots now in use by surgeons. There are no technological barriers to doing that right away."

Among othe r applications, surgeons could use the 3-D scanner to spot potential tumors in real time during biopsy procedures, making a diagnosis of cancer harder to miss, the engineers said. Physicians today must rely on still images, such as CT scans, of a patients' organs captured prior to biopsy to locate lesions suspected to be cancer.

As artificial intelligence technology improves in the coming decades, the scanner might even be able to guide surgical robots without the help of a surgeon, the researchers said.

The 3-D ultrasound probe has yet to be tested in human patients, Smith said, but he added that his team believes the technology is ready for clinical trials.

The Duke team in 1987 developed the first-ever 3-D ultrasound scanner for imaging the heart in real time from outside the body. As technology enabled ever smaller ultrasound arrays, the researchers engineered probes that could fit inside catheters threaded through blood vessels to view the vasculature and heart from the inside.

Earlier this year, the team reported another advance: a 3-D ultrasound device including 500 tiny cables and sensors packed into a tube 12 millimeters in diameter -- small enough to be inserted through the incisions required for laparoscopic surgeries http://www.pratt.duke.edu/news/?id=417. The researchers then showed that the device can produce actual 3-D images of the beating hearts in animals.

The team has since demonstrated that the scanner also can be used to laparoscopically image other organs, including the spleen, liver and gall bladder.

In the current study, the researchers used the scanner to identify coordinates denoting the precise location of an artificial lesion inside a type of artificial organ, or "phantom," commonly used for testing imaging technologies. The researchers then entered the coordinates into a simple robot that controlled a biopsy needle, and the robot di d the rest.

The researchers also have used the scanner to guide the biopsy robot toward a designated target in the gall bladder of an animal that had died. (An ultrasound video of the needle traveling toward and then precisely puncturing the animal's organ can be downloaded at http://transducers.bme.duke.edu/movies.php.)

"Once the robot takes over, it sends the needle to within about 1.5 millimeters of the center of the target," Smith said. "That's pretty good accuracy."

The 3-D ultrasound scanner also has the advantage of seeing the interior of organs, Smith said. Optical laparoscopes, in contrast, provide surgeons only a view of organs' outer surfaces.

"Two-dimensional laparoscopic ultrasound has seen increased use as a surgical aide in general, gynecological and urological procedures," Pua added. "Our results show that the application of real-time 3-D ultrasound to these surgical procedures may increase information available to the surgeon and serve as an additional guidance tool."


'"/>

Source:Duke University


Related biology news :

1. Pulsating ultrasound enhances gene therapy for tumors
2. Penn researchers study the use of ultrasound for treatment of cancer
3. 3D ultrasound device poised to advance minimally invasive surgery
4. 3-D ultrasound identifies women at risk for impending preterm birth
5. Protein discovery could unlock the secret to better TB treatment
6. Tiny particles could solve billion-dollar problem
7. First atlas of key brain genes could speed research on cancer, neurological diseases
8. Discovery of key proteins shape could lead to improved bacterial pneumonia vaccine
9. A comprehensive response to HIV could prevent 10 million AIDS deaths in Africa by 2020
10. How the environment could be damaging mens reproductive health
11. Dead zone area in Gulf could be increasing, researchers say
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:1/28/2016)... SAN JOSE, Calif., Jan. 28, 2016 Synaptics (NASDAQ: ... financial results for its second quarter ended December 31, 2015. ... the second quarter of fiscal 2016 increased 2 percent compared to ... the second quarter of fiscal 2016 was $35.0 million, or $0.93 ... Non-GAAP net income for the first quarter of fiscal 2016 ...
(Date:1/25/2016)... , Jan. 25, 2016  Glencoe Software, the ... pharma and publication industries, will provide the data management ... Centre (NPSC). ... Phenotypic analysis measures ... whole organisms, allowing comparisons between states such as health ...
(Date:1/21/2016)... , January 21, 2016 ... to a new market research report "Emotion Detection and ... Others), Software Tools (Facial Expression, Voice Recognition and ... - Global forecast to 2020", published by MarketsandMarkets, ... expected to reach USD 22.65 Billion by 2020, ...
Breaking Biology News(10 mins):
(Date:2/5/2016)... 5, 2016 On Thursday, February 11, ... for community, health and disaster services, and the ... to enhance care coordination and service delivery for the ... need and to better connect service providers to the ... San Diego has handled more than ...
(Date:2/4/2016)... ... February 04, 2016 , ... Morf ... today announced an interactive FDA compliance training course, Writing Effective ... Professional Society) accredited interactive course on Morf Playbook—now conveniently available on smartphones and ...
(Date:2/4/2016)... ... 2016 , ... Shimadzu Scientific Instruments will showcase several new ... poster sessions, and present on the analysis of mycotoxins and medical cannabis at ... 10 at the Georgia World Congress Center in Atlanta, Georgia. , Attendees ...
(Date:2/4/2016)... JUNCTION, N.J. , Feb. 4, 2016 /PRNewswire/ ... care immunotherapy leader commercializing its flagship CytoSorb® blood ... cardiac surgery patients around the world, announced that ... will present at the Source Capital Group,s 2016 ... and update on the company.  ...
Breaking Biology Technology: