Abstract
With the 0.55 T magnetic resonance imaging (MRI) scanner "Free.Max", anew device concept in the mid-field sector is being introduced into the market. New technologies and artificial intelligence (AI) applications as well as anew coil concept compensate for the disadvantages of the lower field strength and the widest examination tunnel measuring 80 cm. An initial assessment was made with regard to the suitability of the 0.55 T scanner in the private practise environment. The goal was to analyse whether measurement parameters, examination protocols and image quality meet requirements and expectations. About 2020 examinations were carried out using the Free.Max scanner. To assess the image quality and measurement parameters, about 20% of those patients had previously undergone comparative examinations of the same body parts with comparable examination protocols based on five different 1.5 T scanners in the same practice. This MRI device has the potential to meet the quality standards and expectations of the assessing radiologists. The measurement time is about 30 min per patient. The signal-to-noise ratio does not achieve that of images obtained using high-field scanners but allows for sufficiently safe diagnosis. Susceptibility to motion artefacts is higher and to metal artefacts lower. The concept of flexible coils and atunnel width of 80 cm is perceived as comfortable by patients. The new 0.55 T scanner has the potential to partially replace high-field machines in the private practise setting. The profitability of the device will depend on the cost difference compared to the high-field scanner as longer acquisition times are currently required, which reduces examination frequency. Further developments in the mid-field sector are to be expected.
Published Version
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