ArticleMagnetic resonance in medicine2011
Ultrashort TE MR imaging of bovine cortical bone: the effect of water loss on the T1 and T2* relaxation times.
Article in Magnetic resonance in medicine, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Micron-resolution Imaging of Cortical Bone under 14 T Ultrahigh Magnetic Field.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2023Article
- Investigation of the Longitudinal Relaxation Time of Rat Tibial Cortical Bone Using SWIFT.Magnetic resonance in medical sciences : MRMS : an official journal of Japan Society of Magnetic Resonance in Medicine · 2017Article
- Quantitative ultrashort echo time (UTE) MRI of human cortical bone: correlation with porosity and biomechanical properties.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2012Article
- Review. The Agfa Mayneord lecture: MRI of short and ultrashort T₂ and T₂* components of tissues, fluids and materials using clinical systems.The British journal of radiology · 2011Article
Corrections and comments
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Authors and funding
6 authors.
Funding
Abstract
The effects of water loss on the T1 and T2* of bovine cortical bone were investigated using ultrashort echo time sequences with signals excited either by a short hard pulse or by two longer half pulses. Nine bovine femur samples were prepared and sequentially air- and oven-dried. On average 3.42% of bone by weight was lost after air-drying for 3 days, with another 5.98% of bone weight loss after oven-drying at 100°C for 24 h. T1 and T2* were measured after every 1% decrease in weight, with 9-10% bone weight loss at the termination of the drying process. After both forms of drying, the overall T1 decreased 33% from 153±18 ms to 102±17 ms when measured using the hard pulse and from 186±25 ms to 122±23 ms when using the half pulses. T2* decreased by 45-50% from 368±29 μs to 201±19 μs using the hard pulse and from 379±35 μs to 191±17 μs using the half pulses. A steady decrease of 26-31% was observed in both T1 and T2* with the first 3-4% bone water loss after air-drying. Oven-drying at 100°C for 24 h resulted on an additional 4% T1 reduction but 25% T2* reduction.
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