Magnetic resonance cinematography of the fingers: a 3.0 Tesla feasibility study with comparison of incremental and continuous dynamic protocols

Bayer, Thomas A.; Adler, Werner; Janka, Rolf; Uder, Michael; Roemer, Frank W.

doi:10.1007/s00256-017-2742-2

Cited by 10 publications

(10 citation statements)

References 17 publications

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“…Bayer et al found a better image quality with an optimized bSSFP sequence compared to spoiled-GRE sequence for real-time dynamic MRI of finger motion at 3.0 T based on subjective evaluation. But they also reported a reduced temporal resolution of 1–3.6 s and more susceptibility artifacts on the bSSFP sequence (20). On the other hand, Shaw et al found that the RF-spoiled sequence was more robust than the bSSFP sequence for real-time dynamic MRI of the wrist at 3.0 T because it was less affected by artifacts (26).…”

Section: Discussionmentioning

confidence: 99%

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Assessment and comparison of image quality between two real-time sequences for dynamic MRI of distal joints at 3.0 Tesla

et al. 2022

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Background Real-time sequences allow functional evaluation of various joint structures during a continuous motion and help understand the pathomechanics of underlying musculoskeletal diseases. Purpose To assess and compare the image quality of the two most frequently used real-time sequences for joint dynamic magnetic resonance imaging (MRI), acquired during finger and ankle joint motion. Material and Methods A real-time dynamic acquisition protocol, including radiofrequency (RF)-spoiled and balanced steady-state free precession (bSSFP) sequences, optimized for temporal resolution with similar spatial resolution, was performed using a 3.0-T MRI scanner on 10 fingers and 12 ankles from healthy individuals during active motion. Image quality criteria were evaluated on each time frame and compared between these two sequences. Signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) were determined and compared from regions of interest placed on cortical bone, tendon, fat, and muscle. Visualization of anatomical structures and overall image quality appreciation were rated by two radiologists using a 0–10 grading scale. Results Mean CNR was significantly higher with bSSFP sequence compared to RF-spoiled sequence. The grading score was in the range of 5–9.3 and was significantly higher with RF-spoiled sequence for bone and joint evaluation and overall image appreciation on the two joints. The standard deviation for SNR, CNR, and grading score during motion was smaller with RF-spoiled sequence for both the joints. The inter-reader reliability was excellent (>0.75) for evaluating anatomical structures in both sequences. Conclusion A RF-spoiled real-time sequence is recommended for the in vivo clinical evaluation of distal joints on a 3.0-T MRI scanner.

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Section: Discussionmentioning

confidence: 99%

“…Grading scales or elements related to a disease (for example, presence or absence of the pathology, number of lesions, etc.) can be used for a subjective evaluation (17,20). Objective metrics are typically done in comparison with a reference image, like SNR, CNR, Shannon's information content, or root-mean-square error for MRI (16).…”

Section: Discussionmentioning

confidence: 99%

Assessment and comparison of image quality between two real-time sequences for dynamic MRI of distal joints at 3.0 Tesla

et al. 2022

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“…Another dynamic sequence analysed in our study was TRUFI, which is characterised by the highest image to time ratio, 60 scans per 22 seconds. Previous studies demonstrated high effectiveness of this sequence in dynamic imaging of hand movements, albeit with a 3.0T scanner [17]. The slices obtained with this sequence accurately depict even subtle changes in fast-moving anatomical structures.…”

Section: Discussionmentioning

confidence: 88%

Assessment of vocal fold mobility using dynamic magnetic resonance imaging and ultrasound in healthy volunteers

et al. 2019

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Purpose:To verify the value of dynamic magnetic resonance imaging (MRI) sequences, fast field echo (FFE), and balanced gradient echo (true fast imaging with steady-state free precession -TRUFI) in the evaluation of vocal fold mobility in healthy volunteers, against ultrasound examination (US) as the reference test. Material and methods:Vocal fold mobility in 35 healthy volunteers (age 20-59 years, 20 women and 15 men) with no history of laryngeal disorders and neck surgeries was determined by means of US and MRI during normal breathing and phonation of the "hiiii" sound. US images were used to determine the glottic angles. During MRI two dynamic sequences, fast field echo and balanced gradient echo, were applied to determine the minimum and maximum values of the glottic angles, along with the rima glottidis area, separately for the right and left compartments. Due to differences in larynx anatomy, the abovementioned parameters were analysed separately for women and men.Results: No significant differences were observed between the glottic angle values obtained during US and dynamic MRI (FFE and TRUFI sequences). Regardless of the dynamic MRI sequence used, a positive correlation was found between the maximum values of glottic angle and the rima glottidis area. This correlation was strong and statistically significant among men, but not in women. Conclusions:Dynamic MRI of vocal folds using FFE and TRUFI sequence is an accurate method for the objective evaluation of rima glottidis width.

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“…The distal situation of these joints makes it possible to use a "rigid" RF coil. Bayer et al performed dynamic MRI sequences of the finger with a sky boot-shaped coil [63], whereas Schellhammer and Vantorre used a knee coil to study finger motion [52]. The hand can also be positioned within a head coil to investigate all degrees of freedom ( Fig.…”

Section: Distal Jointsmentioning

confidence: 99%

Dynamic MRI for articulating joint evaluation on 1.5 T and 3.0 T scanners: setup, protocols, and real-time sequences

et al. 2020

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Dynamic magnetic resonance imaging (MRI) is a non-invasive method that can be used to increase the understanding of the pathomechanics of joints. Various types of real-time gradient echo sequences used for dynamic MRI acquisition of joints include balanced steady-state free precession sequence, radiofrequency-spoiled sequence, and ultra-fast gradient echo sequence. Due to their short repetition time and echo time, these sequences provide high temporal resolution, a good signal-to-noise ratio and spatial resolution, and soft tissue contrast. The prerequisites of the evaluation of joints with dynamic MRI include suitable patient installation and optimal positioning of the joint in the coil to allow joint movement, sometimes with dedicated coil support. There are currently few recommendations in the literature regarding appropriate protocol, sequence standardizations, and diagnostic criteria for the use of real-time dynamic MRI to evaluate joints. This article summarizes the technical parameters of these sequences from various manufacturers on 1.5 T and 3.0 T MRI scanners. We have reviewed pertinent details of the patient and coil positioning for dynamic MRI of various joints. The indications and limitations of dynamic MRI of joints are discussed.

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Magnetic resonance cinematography of the fingers: a 3.0 Tesla feasibility study with comparison of incremental and continuous dynamic protocols

Abstract: MRCF is feasible with appropriate image quality during continuous motion using a finger-gating device. Almost perfect image quality is achievable with incremental PD imaging, which represents a compromise for MRCF with the drawback of prolonged scanning time.

Cited by 10 publications

References 17 publications

Assessment and comparison of image quality between two real-time sequences for dynamic MRI of distal joints at 3.0 Tesla

Assessment and comparison of image quality between two real-time sequences for dynamic MRI of distal joints at 3.0 Tesla

Assessment of vocal fold mobility using dynamic magnetic resonance imaging and ultrasound in healthy volunteers

Dynamic MRI for articulating joint evaluation on 1.5 T and 3.0 T scanners: setup, protocols, and real-time sequences

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