Magnetic resonance imaging (MRI) is aprocedure that uses magnetic fields and radiowaves to produce an image of the body in cross sections. This enables excellent images, particularly of soft tissue such as the brain, spine, joints and internal organs. No exposure to ionization radiation.
First 48 Channel 3T Open Bore MRI from Siemens
70 cm Open Bore for
- Obese, Paediatric & ICU patients
- Claustrophobic &Kyphotic patients
- Scanning in lateral position in patients who cannot lie Supine
- Revolutionary 4th generation RF Technology
- For consistent High Resolution Image Quality & reduced patient waiting time
- Non contrast for Renal & Peripheral Angio in patients with compromised renal function.
- Removes motion artifacts in all body regions (especially in Paediatric and non- cooperative patients).
- Intracranial bleed/ Cavernous Angiomas
- Venous structures/ sheering injury
- Sturge Weber Disease/ Intracranial metastasis
- Shorter Scan Time
3T MRI produces significantly more power and magnetic field strength, the scanning time is significantly less than that of a standard MRI Scan.
- Dedicated Breast & Knee Coils
- Multi Voxel Spectroscopy for Brain, Prostate & Breast
- Excellent Image Quality
- Ultra Light Weight Coils
- Breast Imaging
Breast MRI is better at 3T due to higher resolution which results in clearer/sharper images.Painless exam with minimal or no compression needed.
How is MRI Done?
The images that an MRI scanner takes are very detailed. They are taken in thin ‘slices’ through your body and can be taken from any direction. They show your bones, soft tissues, such as muscle, skin, nerves and blood vessels, and organs such as your brain, liver & kidneys. An MRI scanner takes pictures of most parts of your body. It uses radio waves and a magnetic field to create images of the inside of your body.
An MRI scanner takes very detailed pictures of your body, so it can often show things that aren’t seen on an X-ray or in other tests such as ultrasound.
You may have an MRI scan to find out the cause of symptoms such as pain, joint or muscle stiffness, swelling or weight loss. You may also have an MRI scan if you have been diagnosed with a condition where your doctor needs detailed information so you can make decisions about what treatment is best. The pictures created by an MRI scan help show the differences between healthy and unhealthy tissue.
What happens during an MRI SCAN?
An MRI scan usually takes between 10 and 15 minutes to complete. However, some scans may last for 30 to 40 minutes. You will be told beforehand how long your scan will take. Your radiographer will ask you to lie on your back on a table, which slides inside a cylinder-shaped machine. He or she may use pillows or straps to adjust your position and help you to stay still. An open frame that contains a radio aerial may need to be placed around the part of your body being scanned to help improve image quality.
Usually, the part of your body being scanned is placed in the middle of the scanner. The machine is open ended so you won’t be completely enclosed at any time. Radiographer will operate the scanner from behind a window and will be able to see and hear you during the scan. He or she will talk to you during the scan and remind you to be still. You will be given a call button to hold during the scan, and you can press this button to talk to your radiographer in an emergency.
The MRI scanner makes loud knocking or buzzing sounds throughout the scan. Radiographer will give you earplugs or headphones to wear. It can take several minutes for each image to be taken, so it’s important to lie very still and breathe gently. Any movement can blur the scan. Radiographer may ask you to hold your breath at certain times during the scan.
Sometimes a special dye (contrast medium) is used during the scan to produce more detailed images. If you have kidney problems,tell at the time of filling consent form. The dye is injected into a vein in your hand or forearm. You may feel a warm sensation after the dye is injected, which lasts for a short time. Tell the radiographer before your scan if you have any allergies.
What are the risks of MRI?
MRI scans are commonly performed and generally safe. Side-effects are mostly temporary effects. One may feel slightly claustrophobic and uncomfortable from being inside the scanner.An MRI is a very safe test and there are no known complications or side-effects from the magnetic field used during the scan.It’s possible to have an allergic reaction to the contrast medium used, although this is very unlikely. If you have any itching or shortness of breath during the scan, tell the radiographer.
Who interprets the results and how do I get them?
The radiologist will analyze the images and prepare the report. This will be done on the same or following day. We can also provide a permanent record on a CD at a nominal cost. Please do inform us in advance if you need one.
There’s no special preparation necessary for the MRI examination. There are no food or drink restrictions. Continue to take any medication prescribed by your doctor unless otherwise directed.
You won’t be allowed to wear anything metallic during the MRI examination, so it is advised to remove watches, jewelry or anything made from metal. Items that need to be removed by patients before entering the MR system room include:
- Purse, wallet, money clip, credit cards, cards with magnetic strips
- Electronic devices such as beepers or cell phones
- Hearing aids
- jewelry, watches
- Pens, paper clips, keys, coins
- Hair barrettes, hairpins
- Any article of clothing that has a metal zipper, buttons, snaps, hooks or metal threads
- Shoes, belt buckles, safety pins
- Examples of items or things that may create a health hazard or other problem during an MRI exam include:
- Implantable cardioverter defibrillator (ICD)
- Aneurysm clip
- Metal implant
- Implanted drug infusion device
- Foreign metal objects, especially if in or near the eye
- Shrapnel or bullet wounds
- Permanent cosmetics or tattoos
- Dentures/teeth with magnetic keepers
- Other implants that involve magnets
- Medication patch (i.e., transdermal patch) that contains metal foil
- Check with the MRI technologist or the Radiologist if you have questions or concerns about any implanted object or health condition that could impact the
- MRI procedure. This is particularly important if you have undergone surgery involving the brain, ear, eye, heart, or blood vessels.
Advantages of 3 Tesla
High field strength MRI delineates structures that have not been seen before, such as blood vessels as small as 200 to 300 microns, drilling down to the ultra–structural level. With a three– to four–fold higher SNR, 3–tesla MRI more precisely localizes areas of activation, enabling accurate mapping of brain function in patients. 3T is a huge benefit when it comes to Paediatric scanning as it could spot heterotopic gray matter associated with a developmental problem which a 1.5T can miss.
The demand for high–performance imaging is demonstrating clear medical benefit in cases where we can’t see lesions well enough with 1.5 tesla, such as scanning for developmental abnormalities or performing high–resolution MR angiography, diffusion or perfusion imaging & Brain Spectroscopy where apart from crisp spectroscopy data one can also see new matabolites like Myo inocitol, Glutamine, Glutamate, Pyurate, Succinate, Taurine which is scarcely seen in 1.5T. Because of the enhanced resolution of images and the ability to factor in physiology, 3–tesla imaging has not only captures finer details of anatomy, it improves the separation of spectroscopic peaks of chemical species in the prostate. It also identifies small lesions in the breast and evaluated peripheral vascular disease.
The biggest payoff for 3 Tesla is in presurgical planning to avoid invasive angiography or direct cortical mapping at the time of surgery. Coupled with anatomic detail, 3–tesla perfusion studies plot a patient’s physiology up to the edge of a lesion, and diffusion tensor images trace white–matter tracks that must be preserved.
The signal changes that we look at with blood oxygenation level–dependent contrast at 1.5 tesla is on the order of 1% to 2% and that signal change goes to 3% to 5% at 3 tesla, meaning that you can do reliable individual patient mapping and interpretation.
70 CM wide Bore :
This was designed mainly to maximize Patient comfort. The wide bore not only enhances the patient comfort but also allows the a) scanning of Paediatric patient scanning without sedation (The child and mother can comfortable lie down inside the magnet to achieve maximum cooperation from the child and hence avoid the unnecessary sedation) b) Scanning of Khypotic patients c) Scanning of patients, who have the breathing problems, by making them lie down laterally inside the magnet.
Tim 4G :
This is the revolutionary 4th Generation RF technology introduced by Siemens which increases the no of coil elements dramatically to maximize the Signal to noise ratio. This in turn helps the faster scanning by increasing the PAT factor like never before with a consistent High resolution Image Quality and reduces the Patient waiting time.
Industry’s First 48 RF Channel System : Due the introduction of Tim 4G the need of the hour was to introduce and complimenting receive channels and hence first time in the industry a 48 Channel RF receive system was introduced in Skyra.
Low Noise :
Whenever the Field strength is increased the noise level goes up. In Skyra the inbuilt Silent mode reduces the noise to an acceptable decibel level and is lowest in the industry.
So the combination of 70 cm Bore, Tim 4G, Audio comfort and 48 Channel RF receive had increased the Patient comfort to a new level.
Day Optimising Throughput ( Dot) : The most complex part of MRI scanning today is the planning. The technicians ability & skill is tested to limits when it comes to planning. The Dot Engines introduced by Siemens in Skyra automises the planning with minimal intervention from the technicians. This enables the technicians to concentrate more on the patients without worrying about the planning part. Hence excellent scanning speed with Highest & consistent Image quality is a reality today with Skyra.
Non contrast Angio for the Renal and Peripheral Angio. This is introduced first time in Coimbatore and is very useful in patients who are affected by compromised renal function Necrosis. It is assuming significance because recent emphasis on NSF (Nephrogenic Systemic Fibrosis), which is a condition that can occur due to the administration of Gadolinium contrast.
This is a unique software which helps in detecting accurately the Micro bleeds in the brain, Subarachnoid haemorrhage, differentiates calcium from bleed and Intracranial & Intra tumor bleeds
Breast Imaging :
With the Breast package available in Skyra now the imaging, intervention (biopsy) and Breast Spectroscopy possible.