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From The Desk Of Dr. Paresh Doshi – Consultant Neurosurgeon
US FDA warning on use of CT scan for neurostimulator.
Recently, the US FDA issued a new safety notice on possible malfunction of electronic devices that can be caused by CT scanning. “FDA’s current understanding is that when a CT scanner directly irradiates the circuitry of certain implantable or wearable electronic medical devices (i.e. when the device is visible in the resulting CT image), it can cause sufficient electronic interference to affect the function and operation of the medical device,” the agency said.
“The probability that this interference can cause clinically significant adverse events is extremely low. Furthermore, the probability of x-ray electronic interference is lower when the radiation dose and the radiation dose rate are reduced,” the FDA said. “Interference is completely avoided when the medical device is outside of the primary x-ray beam of the CT scanner.” The FDA clarifies that they not preclude from patients with device to undergo a CT scan, but remarks that,”The probability of an adverse event being caused by exposing these devices to CT irradiation is extremely low, and it is greatly outweighed by the clinical benefit of a medically indicated CT examination,” the agency said.If a CT scan is to be ordered in an area covering the pump than one should inform the patient, stop the neurostimulator and restart it after checking it once again.
CT scans have been done on all patients with implantable devices like cardiac pacemakers, insulin pumps and neurostimulators. The chances of adverse events are minimal and with the improved technology these will be even lesser. One should contact their physician if they have to undergo CT scan to ensure adequate precautions are taken.
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"- Times of India , Mumbai
UK national goes under knife in city to cure rare headaches."
"- DNA , Mumbai
City docs give man with Parkinson’s his life back."
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Now, brain device cell for neuro patients lasts 25 years."
"- Times of India , Indore
Brain disorders curable with surgery."
"- Times of India , Ahmedabad
Remote control miraculously mutes Parkinson’s afflictions."
Success rate in safe hands is more than 95%. Complications in the form of post-operative transient neurodeficits can occur in 2-5%. Mortality in modern neurosurgery in expert hands approaches to zero.
Surgery is helpful for relieving tremors, drug induced side effect leading to involuntary movements called dyskinesia, frequent on-off fluctuations, prolonged off periods, pain, dystonia (curling of fingers and toes), postural imbalance, severe rigidity, hallucinations, etc. In short any patient:
- Who is not satisfied with his/her level of control of Parkinson’s disease.
- Exhibits Parkinson’s disease symptoms causing a decline in the quality of life
- Has had an adequate and reasonable trial of medications is a candidate for surgery.
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