Assessment of signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) in 3T MRI in the presence of zirconium, titanium, and titanium-zirconium alloy implants

Publication date: Available online 16 September 2019Source: Oral Surgery, Oral Medicine, Oral Pathology and Oral RadiologyAuthor(s): Husniye Demirturk Kocasarac, Emine S. Kursun-Cakmak, Gulbahar Ustaoglu, Seval Bayrak, Kaan Orhan, Marcel NoujeimAbstractObjectivesQuantitatively compare the signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) in T1WI and T2WI sequences in 3 T magnetic resonance imaging (MRI) using zirconium, titanium (grades 4 and 5), and titanium-zirconium alloy implants to evaluate the effect of implant type and imaging sequence.MethodsMRI was acquired using a 3.0 Tesla magnet with a 16-channel head coil. Implants of each type were mounted in gel and scanned in axial, coronal, and sagittal planes using fast spin echo sequences (FSE) in T1WI (TR=600, TE=12 ms) and T2WI (TR=3000, TE=80 ms) sequences. Data was transferred to Synapse 3D software and images were measured twice by an oral and maxillofacial radiologist blinded to the type of implants.ResultsZirconium implants resulted in the lowest SNR and CNR values (p
Source: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology - Category: ENT & OMF Source Type: research

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A general surgeon in North Carolina wants to buy a new magnetic resonance imaging (MRI) machine to make procedures more affordable, but the state won ’t allow him. Now he’s suing. According to the  lawsuit, Forsyth Imaging owner Gajendra Singh, MD, was concerned about the fact that many patients were struggling to afford imaging services. He wanted to offer imaging services at affordable prices, and help his patients easily determine their out-of-pocket expenses. He had built a transparent pricing model, and posted procedure rates on Forsyth ’s website. He claims that his prices are lower than o...
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