Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"temperature imaging"”.
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Stochastic Data Assimilation Approaches For Magnetic Resonance Temperature Imaging
… proton resonance frequency shift (PRFS) based MR temperature imaging can quantitatively monitor tissue temperature changes. It is widely known that the PRFS technique is easily perturbed by tissue motion, tissue susceptibility changes, magnetic field drift, and modality–dependent applicator …
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Real-time Temperature Imaging Using Ultrasonic Change in Backscattered Energy
<p>Thermal therapy from low-temperature cryosurgery to high-temperature ablation of tumors and unwanted electrical pathways has gained increased attention. Temperature imaging (TI) from magnetic resonance studies is the de facto standard for volumetric estimation of temperature. Ultrasound has the …
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3D Temperature Imaging Using Ultrasonic Backscatter Energy during Non-Uniform Tissue Heating
… One of its limitation is lack of detailed temperature monitoring. Ultrasound is a cheap, non-ionizing and convenient method with potential for non-invasive temperature imaging. Previously Straube and Arthur predicted monotonic changes in backscattered energy (CBE) of ultrasound with …
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A Framework for Temperature Imaging using the Change in Backscattered Ultrasonic Signals
… is a cancer treatment that elevates tissue temperature to 40 to 43oC. It would benefit from a non-invasive, safe, inexpensive and convenient thermometry to monitor heating patterns. Ultrasound is a modality that meets these requirements. In our initial work, using both prediction and …
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Dynamic Chemical Shift Imaging For Image-Guided Thermal Therapy
Magnetic resonance temperature imaging (MRTI) is recognized as a noninvasive means to provide temperature imaging for guidance in thermal therapies. The most common method of estimating temperature changes in the body using MR is by measuring the water proton resonant frequency (PRF) shift. …
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Determination of Thermal Dose Model Parameters Using Magnetic Resonance Imaging
<p>Magnetic Resonance Temperature Imaging (MRTI) is a powerful technique for noninvasively monitoring temperature during minimally invasive thermal therapy procedures. When coupled with thermal dose models, MRTI feedback provides the clinician with a real-time estimate of tissue damage by …
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Solid-state spin-integrated circuits for quantum sensing and control
… (NV) centers offer impressive room temperature imaging capabilities for both magnetic fields and temperature. NV-based sensing platforms have found utility in solid-state physics, biological systems, and vector magnetometry. These applications highlight the immense promise of NV …
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Computer Simulations for Applications of Magnetic Resonance Guided Focused Ultrasound Surgery (MRgFUS) of Uterine Fibroids
… treatments take place in a magnetic resonance imaging (MRI) suite where temperature imaging is interspersed throughout the treatment in intervals typically lasting up to several minutes.Additional biophysical insights into clinically relevant aspects of treatments, along with model-based …
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Prediction of Laser Ablation In Brain: Sensitivity, Calibration, and Validation
… parameter as indicated by gPC, from patient MR temperature imaging (MRTI). In order to accelerate the bioheat model for iteration during parameter optimization, two simplified models are conceived: (1) a homogeneous, transient FEM model implemented on GPU and (2) a homogeneous, steady-state, …
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Feasibility Study of Multi-application, Multi-Walled Carbon Nanotube for Magnetic Resonance Temperatrue Imaging Guided Laser Induced Thermal Therapy
… Frequency (PRF) based Magnetic Resonance Temperature Imaging (MRTI) to improve the safety and efficacy of Laser Induced Thermal Therapy (LITT). Instilled MWCNTs enable precise tumor localization and killing of the tumor through preferential high temperature while protecting surrounding …
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Submicron-resolution Photoacoustic Microscopy of Endogenous Light-absorbing Biomolecules
<p>Photoacoustic imaging in biomedicine has the unique advantage of probing endogenous light absorbers at various length scales with a 100% relative sensitivity. Among the several modalities of photoacoustic imaging, optical-resolution photoacoustic microscopy (OR-PAM) can achieve high spatial …
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Heterostructure engineering of quantum dots-in-a-well infrared photodetectors
… important characteristics of third-generation imaging systems are high operating temperature, multispectral operation, and large format arrays. The quantum dot infrared photodetector technology, owing to the three-dimensional confinement of carriers, the richness of the electronic spectra in …
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Development of MR Thermometry Strategies for Hyperthermia of Extremity and Breast Tumors
… and hyperthermia, when delivered at moderate temperatures (40°-45°C) for sustained times (30-90 minutes), can help to provide palliative relief and augment tumor response, local control, and survival. However, the dependence of treatment success on achieved temperature highlights the need for …