Improving Visualization of the Central Compartment of the Hip with Direct MR Arthrography under Axial Leg Traction

Schmaranzer, Florian; Klauser, Andrea; Kogler, Michael; Henninger, Benjamin; Forstner, Thomas; Reichkendler, M.; Schmaranzer, Ehrenfried

doi:10.1016/j.acra.2014.04.014

Cited by 43 publications

(37 citation statements)

References 27 publications

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“…The evaluation of the central compartment of the hip, which includes the chondrolabral transition, articular cartilage, and the LT, remains an important diagnostic challenge for MR arthrography [16][17][18]. The strong cohesion of the joint surfaces of the hip results in most of the contrast located in the peripheral compartment (capsular recess), whereas virtually no contrast enters the central compartment [16].…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Usefulness of MR arthrography of the hip with leg traction in the evaluation of ligamentum teres injuries

Cerezal

Carro²,

Llorca

et al. 2015

Skeletal Radiol

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Section: Discussionmentioning

confidence: 99%

“…MR arthrography with axial traction allows for the separation of the articular surfaces and may provide a better assessment of the central compartment, including the LT [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Usefulness of MR arthrography of the hip with leg traction in the evaluation of ligamentum teres injuries

Cerezal

Carro²,

Llorca

et al. 2015

Skeletal Radiol

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show abstract

“…MRA with axial traction has been evaluated with success in the shoulder, [11][12][13] hip, [14][15][16][17][18][19][20][21] knee, 22 wrist, [23][24][25][26][27][28][29][30] ankle 31,32 and metatarsophalangeal 33 and metacarpophalangeal joints. 34 To the best of our knowledge, there is no study comparing MRA of the elbow with and without traction.…”

Section: Introductionmentioning

confidence: 99%

Elbow MR arthrography with traction

Lee

Griffith

Yuen

et al. 2016

BJR

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“…Translating this protocol into live subjects may be a challenge due to motion artifact and need for extended hip traction. However, a recent study that employed traction with a 2D MRI scan demonstrates the feasibility of using traction during an MR scan to visualize both layers of articular cartilage (43). In the future, we will incorporate methods to minimize motion artifact by scanning each hip separately and will also adopt techniques to stabilize the hip during traction despite possible muscular co-contraction.…”

Section: Discussionmentioning

confidence: 99%

Accuracy of 3D dual echo steady state (DESS) MR arthrography to quantify acetabular cartilage thickness

Abraham

Bangerter

McGavin

et al. 2015

Magnetic Resonance Imaging

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Purpose Clinical magnetic resonance imaging (MRI) sequences used to image hip cartilage often have reduced out-of-plane resolution and may lack adequate signal to noise to image cartilage. We deployed and quantified the accuracy of 3D dual echo steady state (DESS) MR arthrography with hip traction to image acetabular cartilage. Methods Saline was injected into four cadaver hips placed under traction. 3D DESS MRI scans were obtained before and after cores of cartilage were harvested from the acetabulum; the two MRIs were spatially aligned to reference core positions. The thickness of cartilage cores was measured under microscopy to serve as the reference standard. 3D reconstructions of cartilage and subchondral bone were generated using automatic and semi-automatic image segmentation. Cartilage thickness estimated from the 3D reconstructions was compared to physical measurements using Bland-Altman plots. Results As revealed by the automatic segmentation mask, saline imbibed the joint space throughout the articulating surface, with the exception of the posteroinferior region in two hips. Locations where air bubbles were introduced and regions of suspected low density bone disrupted an otherwise smooth automatic segmentation mask. Automatic and semi-automatic segmentation yielded a bias ± repeatability coefficient (95% limits of agreement) of 0.10 ± 0.51 mm (−0.41 to 0.61 mm) and 0.06 ± 0.43 mm (−0.37 to 0.49 mm), respectively. Conclusions Cartilage thickness can be estimated to within ~0.5 mm of the physical value with 95% confidence using 3D reconstructions of 3D DESS MR arthrography images. Manual correction of the automatic segmentation mask may improve reconstruction accuracy.

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Improving Visualization of the Central Compartment of the Hip with Direct MR Arthrography under Axial Leg Traction

Cited by 43 publications

References 27 publications

Usefulness of MR arthrography of the hip with leg traction in the evaluation of ligamentum teres injuries

Usefulness of MR arthrography of the hip with leg traction in the evaluation of ligamentum teres injuries

Elbow MR arthrography with traction

Accuracy of 3D dual echo steady state (DESS) MR arthrography to quantify acetabular cartilage thickness

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