What statement best describes magnetic fields?
Answer Expert Verified The correct answers are “A magnetic field is the area around a magnet where a force is exerted on certain objects”, “Magnetic field lines spread out of the north end of the magnet” and “Magnetic fields are three-dimensional and resemble a bubble”.
Where is magnetic force the strongest?
The magnetic field is strongest at the center and weakest between the two poles just outside the bar magnet. The magnetic field lines are densest at the center and least dense between the two poles just outside the bar magnet.
What is the strongest magnetic force?
The magnetic field of a bar magnet is strongest at either pole of the magnet. It is equally strong at the north pole when compared with the south pole. The force is weaker in the middle of the magnet and halfway between the pole and the center.
What is the most magnetic thing in the world?
magnetar
Is 3 tesla MRI better?
A 3-tesla magnetic field is twice as powerful as the fields used in conventional high-field MRI scanners, and as much as 15 times stronger than low-field or open MRI scanners. This results in a clearer and more complete image.
Is 3 tesla MRI safe?
Safety remains a significant concern in the world of MRIs, and under strict safety guidelines patients can be scanned equally as safe in both 1.5T and 3T systems in most circumstances. The Cons: Patients with implants or devices are safest in a 1.5T magnet. Patients who are pregnant should also avoid 3T systems.
Can you have an MRI with metal in your body?
If you have metal or electronic devices in your body such as artificial joints or heart valves, a pacemaker or rods, plates or screws holding bones in place, be sure to tell the technician. Metal may interfere with the magnetic field used to create an MRI image and can cause a safety hazard.
Who has a 7 Tesla MRI?
Mayo Clinic was the first center in North America to use clinical 7-Tesla MRI, after the Food and Drug Administration (FDA) approved the system in late 2017.
Who makes the best MRI?
Top ten diagnostic imaging device manufacturers
- Siemens Healthcare.
- Philips Healthcare.
- Shimadzu Corporation.
- Toshiba Medical Systems Corporation.
- Carestream Health.
- Hitachi Medical Corporation.
- Hologic.
- Esaote. Esaote focuses on the production of medical diagnostic systems for the healthcare markets, with a focus on MRI and IT systems.
Are all MRIs the same quality?
It is important to note that no one single MRI machine is “better” than any other. There are a variety of MRI machine options to meet the various MRI needs. While one patient may be better suited with a stand-up open MRI, another may be better served with a 1.5T wide-bore.
What can MRIs detect?
MRI can detect a variety of conditions of the brain such as cysts, tumors, bleeding, swelling, developmental and structural abnormalities, infections, inflammatory conditions, or problems with the blood vessels.