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MRI Homepage

Elekta to add functional imaging capabilities and take more time to validate MR-linac system Expects CE approval in first half of 2018

Aspect Imaging scores CE mark for its Embrace Neonatal MR system Already in use in Israel

Updated guidelines recommend use of S-ICDs for patients with ventricular arrhythmia Call to action for physicians

Study cautions against trust in MR results for axial spondyloarthritis MR scans are prone to produce positive results for axSpA in healthy individuals

Mallinckrodt Institute of Radiology installs first Siemens MAGNETOM Vida in the US First Siemens MR scanner to carry BioMatrix technology

MR study shows how different football positions impact brain damage First time DTI and fMRI used in conjunction

Action star Chuck Norris, wife Gena, sue eleven organizations over gadolinium Allege MR contrast agent 'nearly killed her'

Swedish researchers map brains of patients with prosthetic limbs using 7T MR Progress in pursuit of fake limbs that feel real

Using functional MR to predict suicidal tendencies Revealing alterations in brain patterns in response to concepts such as death, cruelty, and trouble

Getting the most from your MR coils As these systems get more complicated, so does repairing them

Prototype for animal testing in the works

Researchers are developing an army of tiny MR-powered robots to deliver cancer drugs

by Lauren Dubinsky , Senior Reporter
Imagine tiny robots, called microsurgeons, that physicians can steer through blood vessels to deliver cancer drugs. Researchers at the University of Houston and Houston Methodist Hospital are working on making that a reality.

The team is developing imaging technology, control algorithms, ultrafast computational methods and human-machine immersion methods to harness the power of an MR scanner. MR will be used to both provide imaging and steer the .5- to-2-millimeter-robots through the body.

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Even the fastest MR systems on the market are too slow for this procedure and have a time lag before the information is available. Real-time control is required, since blood vessels move around the body and surgeons need to see the anatomy as well as the robot to ensure it’s moving correctly.

MR imaging generates enough magnetic force to move the robots through the body’s venous system, but it can’t penetrate tumors or other tissues. To address that, the team is working on two designs — one based on the principle of mechanical resonance and the modeled after a self-assembling surgical tool.

The University of Houston received a $608,000 Synergy Award from the National Science Foundation to develop a prototype suitable for animal testing. The grant is awarded through NSF’s Cyber-Physical Systems program.

The research team’s goal is to use the power of MR to target delivery with dozens of robots throughout the body.

Even though a single robot is capable of targeting a lesion to deliver chemotherapy or another treatment, the researchers caution that this isn’t practical for late-stage cancer.

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