Real‐time MRI of joint movement with trueFISP

Quick, Harald H.; Ladd, Mark E.; Hoevel, Matthias; Bosk, Silke; Debatin, J. F.; Laub, Gerhard; Schroeder, Tobias

doi:10.1002/jmri.10120

Cited by 43 publications

(51 citation statements)

References 9 publications

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“…trueFISP is a commonly used sequence with very short repetition time and echo time, thus providing short acquisition times and anatomical clarity. 12 Our reports differ from previously published data with other sequences. Dynamic cardiac imaging 13 revealed higher signal-to-noise ratio and contrast-tonoise ratio with 3.0-T imaging.…”

Section: Discussioncontrasting

confidence: 99%

Dynamic 1.5-Tvs3-T true fast imaging with steady-state precession (trueFISP)-MRI sequences for assessment of velopharyngeal function

Sinko

Czerny

Jagsch

et al. 2015

Dentomaxillofacial Radiology

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Objectives: To compare the image quality of MRI scans produced with 1.5-and 3.0-T devices during functional test condition. Methods: 65 MRI scans obtained with 1.5-(n 5 43) or 3.0-T (n 5 22) true fast imaging with steady-state precession (trueFISP) sequences from patients with a history of a cleft palate were evaluated. Two experts assessed the MRI scans, independently of each other, and blinded to the MRI technique used. Subjective ratings were entered on a five-point Likert scale. The median planes of three anatomical structures (velum, tongue and pharyngeal wall) were assessed in three functional states (at rest, during phonation of sustained "e" and during articulation of "kkk"). In addition, MRI scans taken during velopharyngeal closure were evaluated. Results: Under blinded conditions, both observers (radiologist and orthodontist) independently rated the quality of 1.5-T scans higher than that of 3.0 T. Statistical analysis of pooled data showed that the differences were highly significant (p , 0.009) in 4 out of 10 test conditions. The greatest differences in favour of 1.5 T were observed for MRI scans of the velum. Conclusions: 1.5 T used with trueFISP may be preferable over 3.0-T trueFISP for the evaluation of the velopharyngeal structures in the clinical routine.

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Section: Discussioncontrasting

confidence: 99%

Dynamic 1.5-Tvs3-T true fast imaging with steady-state precession (trueFISP)-MRI sequences for assessment of velopharyngeal function

Sinko

Czerny

Jagsch

et al. 2015

Dentomaxillofacial Radiology

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“…Fast gradient-echo MRI pulse sequences termed “balanced steady-state free precession” (bSSFP) are capable of generating images rapidly (e.g., <600 ms per image) with a matrix size of 128×128, and with high ratios of both signal-to-noise and contrast-to-noise [18]. In a single-slice sequential acquisition mode, bSSFP has been applied successfully to dynamic imaging of the actively moving temporomandibular joint [19], but not to study static and dynamic instability in the wrist.…”

Section: Introductionmentioning

confidence: 99%

Real-Time Magnetic Resonance Imaging (MRI) during Active Wrist Motion—Initial Observations

et al. 2013

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BackgroundNon-invasive imaging techniques such as magnetic resonance imaging (MRI) provide the ability to evaluate the complex anatomy of bone and soft tissues of the wrist without the use of ionizing radiation. Dynamic instability of wrist – occurring during joint motion – is a complex condition that has assumed increased importance in musculoskeletal medicine. The objective of this study was to develop an MRI protocol for evaluating the wrist during continuous active motion, to show that dynamic imaging of the wrist is realizable, and to demonstrate that the resulting anatomical images enable the measurement of metrics commonly evaluated for dynamic wrist instability.MethodsA 3-Tesla “active-MRI” protocol was developed using a bSSFP sequence with 475 ms temporal resolution for continuous imaging of the moving wrist. Fifteen wrists of 10 asymptomatic volunteers were scanned during active supination/pronation, radial/ulnar deviation, “clenched-fist”, and volarflexion/dorsiflexion maneuvers. Two physicians evaluated distal radioulnar joint (DRUJ) congruity, extensor carpi ulnaris (ECU) tendon translation, the scapholunate (SL) interval, and the SL, radiolunate (RL) and capitolunate (CL) angles from the resulting images.ResultsThe mean DRUJ subluxation ratio was 0.04 in supination, 0.10 in neutral, and 0.14 in pronation. The ECU tendon was subluxated or translated out of its groove in 3 wrists in pronation, 9 wrists in neutral, and 11 wrists in supination. The mean SL interval was 1.43 mm for neutral, ulnar deviation, radial deviation positions, and increased to 1.64 mm during the clenched-fist maneuver. Measurement of SL, RL and CL angles in neutral and dorsiflexion was also accomplished.ConclusionThis study demonstrates the initial performance of active-MRI, which may be useful in the investigation of dynamic wrist instability in vivo.

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“…Recently, advances in MRI have demonstrated good image quality of both bone and soft tissue, enabling noninvasive, in vivo analysis of knee kinematics. [7][8][9][10][11][12] Von Eisenhart-Rothe et al 12 used an open MRI system with flexion/extension torques applied to the tibia at 308 and 908. They found an increase in posterior translation of the medial femoral condyle relative to the tibial plateau centroid in ACL-deficient patients compared to uninjured knees.…”

Section: Introductionmentioning

confidence: 99%

MRI analysis of in vivo meniscal and tibiofemoral kinematics in ACL‐deficient and normal knees

Shefelbine

Benjamin

Lee

et al. 2006

Journal Orthopaedic Research

108

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The objectives of this study were to analyze simultaneously meniscal and tibiofemoral kinematics in healthy volunteers and anterior cruciate ligament (ACL)-deficient patients under axial load-bearing conditions using magnetic resonance imaging (MRI). Ten healthy volunteers and eight ACL-deficient patients were examined with a high-field, closed MRI system. For each group, both knees were imaged at full extension and partial flexion ($458) with a 125N compressive load applied to the foot. Anteroposterior and medial/lateral femoral and meniscal translations were analyzed following three-dimensional, landmark-matching registration. Interobserver and intraobserver reproducibilities were less than 0.8 mm for femoral translation for image processing and data analysis. The position of the femur relative to the tibia in the ACL-deficient knee was 2.6 mm posterior to that of the contralateral, normal knee at extension. During flexion from 08 to 458, the femur in ACL-deficient knees translated 4.3 mm anteriorly, whereas no significant translation occurred in uninjured knees. The contact area centroid on the tibia in ACL-deficient knees at extension was posterior to that of uninjured knees. Consequently, significantly less posterior translation of the contact centroid occurred in the medial tibial condyle in ACL-deficient knees during flexion. Meniscal translation, however, was nearly the same in both groups. Axial loadbearing MRI is a noninvasive and reproducible method for evaluating tibiofemoral and meniscal kinematics. The results demonstrated that ACL deficiency led to significant changes in bone kinematics, but negligible changes in the movement of the menisci. These results help explain the increased risk of meniscal tears and osteoarthritis in chronic ACL deficient knees. ß

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Real‐time MRI of joint movement with trueFISP

Cited by 43 publications

References 9 publications

Dynamic 1.5-Tvs3-T true fast imaging with steady-state precession (trueFISP)-MRI sequences for assessment of velopharyngeal function

Dynamic 1.5-Tvs3-T true fast imaging with steady-state precession (trueFISP)-MRI sequences for assessment of velopharyngeal function

Real-Time Magnetic Resonance Imaging (MRI) during Active Wrist Motion—Initial Observations

MRI analysis of in vivo meniscal and tibiofemoral kinematics in ACL‐deficient and normal knees

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