We have located links that may give you full text access.
Magnetic resonance fingerprinting based thermometry (MRFT): application to ex vivo imaging near DBS leads.
Physics in Medicine and Biology 2023 July 26
The purpose of this study is to demonstrate the first work of T1 -based magnetic resonance thermometry using magnetic resonance fingerprinting (dubbed MRFT). We compared temperature estimation of MRFT with proton resonance frequency shift (PRFS) thermometry on ex vivo bovine muscle. We demonstrated MRFT's feasibility in predicting temperature on ex vivo bovine muscles with deep brain stimulation (DBS) lead. B0 maps generated from MRFT were compared with gold standard B0 maps near lead. 
All experiments were performed on a 3 Tesla whole-body GE Premier system equipped with a 21-channel receive head coil. Four fluoroptic probes were used to measure the temperature at the center of a cold muscle (probe 1), the room temperature water bottle (probe 2), and the center and periphery of the heated muscle (probes 3 and 4). We selected region of interests (ROIs) around the location of the probes and used simple linear regression to generate the temperature sensitivity calibration equations that convert T1 maps and Δs maps to temperature maps. We then repeated the same setup and compared MRFT, PRFS thermometry temperature estimation with gold standard probe measurements. For the MRFT experiment on DBS lead, we taped the probe to the tip of the DBS lead and used turbo spin echo (TSE) sequence to induce heating near lead. We selected ROIs around the tip of the lead to compare MRFT temperature estimation with probe measurements. Vendor-supplied B0 mapping sequence was acquired to compare with MRFT generated B0 maps.
We found strong linear relationships (R2 >0.958) between T1 and temperature and Δs and temperatures in our temperature sensitivity calibration experiment. MRFT and PRFS thermometry both accurately predict temperature (RMSE<1.55 ℃) compared to probe measurements. MRFT estimated temperature near DBS lead has a similar trend as the probe temperature. Both B0 maps shows inhomogeneities around tip of the lead.
Full text links
Related Resources
Trending Papers
Consensus Statement on Vitamin D Status Assessment and Supplementation: Whys, Whens, and Hows.Endocrine Reviews 2024 April 28
The Tricuspid Valve: A Review of Pathology, Imaging, and Current Treatment Options: A Scientific Statement From the American Heart Association.Circulation 2024 April 26
Intravenous infusion of dexmedetomidine during the surgery to prevent postoperative delirium and postoperative cognitive dysfunction undergoing non-cardiac surgery: a meta-analysis of randomized controlled trials.European Journal of Medical Research 2024 April 19
Interstitial Lung Disease: A Review.JAMA 2024 April 23
Management of Diverticulitis: A Review.JAMA Surgery 2024 April 18
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app
All material on this website is protected by copyright, Copyright © 1994-2024 by WebMD LLC.
This website also contains material copyrighted by 3rd parties.
By using this service, you agree to our terms of use and privacy policy.
Your Privacy Choices
You can now claim free CME credits for this literature searchClaim now
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app