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000166793 1001_ $$aJarraya, Mohamed$$b0
000166793 245__ $$aBone Structure Analysis of the Radius Using Ultrahigh Field (7T) MRI: Relevance of Technical Parameters and Comparison with 3T MRI and Radiography.
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000166793 520__ $$aBone fractal signature analysis (FSA-also termed bone texture analysis) is a tool that assesses structural changes that may relate to clinical outcomes and functions. Our aim was to compare bone texture analysis of the distal radius in patients and volunteers using radiography and 3T and 7T magnetic resonance imaging (MRI)-a patient group (n = 25) and a volunteer group (n = 25) were included. Participants in the patient group had a history of chronic wrist pain with suspected or confirmed osteoarthritis and/or ligament instability. All participants had 3T and 7T MRI including T1-weighted turbo spin echo (TSE) sequences. The 7T MRI examination included an additional high-resolution (HR) T1 TSE sequence. Radiographs of the wrist were acquired for the patient group. When comparing patients and volunteers (unadjusted for gender and age), we found a statistically significant difference of horizontal and vertical fractal dimensions (FDs) using 7T T1 TSE-HR images in low-resolution mode (horizontal: p = 0.04, vertical: p = 0.01). When comparing radiography to the different MRI sequences, we found a statistically significant difference for low- and high-resolution horizontal FDs between radiography and 3T T1 TSE and 7T T1 TSE-HR. Vertical FDs were significantly different only between radiographs and 3T T1 TSE in the high-resolution mode; FSA measures obtained from 3T and 7T MRI are highly dependent on the sequence and reconstruction resolution used, and thus are not easily comparable between MRI systems and applied sequences.
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000166793 650_7 $$2Other$$aMRI
000166793 650_7 $$2Other$$aX-ray
000166793 650_7 $$2Other$$abone structure
000166793 650_7 $$2Other$$afractal signature analysis
000166793 650_7 $$2Other$$awrist
000166793 7001_ $$00000-0002-2897-5411$$aHeiss, Rafael$$b1
000166793 7001_ $$aDuryea, Jeffrey$$b2
000166793 7001_ $$0P:(DE-He78)054fd7a5195b75b11fbdc5c360276011$$aNagel, Armin M$$b3$$udkfz
000166793 7001_ $$aLynch, John A$$b4
000166793 7001_ $$00000-0002-9374-8266$$aGuermazi, Ali$$b5
000166793 7001_ $$aWeber, Marc-André$$b6
000166793 7001_ $$aArkudas, Andreas$$b7
000166793 7001_ $$00000-0002-6561-2353$$aHorch, Raymund E$$b8
000166793 7001_ $$aUder, Michael$$b9
000166793 7001_ $$00000-0001-9238-7350$$aRoemer, Frank W$$b10
000166793 773__ $$0PERI:(DE-600)2662336-5$$a10.3390/diagnostics11010110$$gVol. 11, no. 1, p. 110 -$$n1$$p110$$tDiagnostics$$v11$$x2075-4418$$y2021
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