A5026406322- MRI in cancer diagnosis
- Advanced MRI Techniques and Applications
- Advanced Neuroimaging Techniques and Applications
- Pituitary Gland Disorders and Treatments
- Glioma Diagnosis and Treatment
- Lanthanide and Transition Metal Complexes
- Ovarian cancer diagnosis and treatment
- Radiomics and Machine Learning in Medical Imaging
- Cardiac Imaging and Diagnostics
- Brain Metastases and Treatment
- Cardiac tumors and thrombi
- Advanced X-ray and CT Imaging
- Radiation Dose and Imaging
Kagoshima University Hospital
2016-2024
Kagoshima City Hospital
2018
Tokushima University
2014
This study was designed to investigate the use of time-dependent diffusion magnetic resonance imaging (MRI) parameters in distinguishing between glioblastomas and brain metastases.
<h3>BACKGROUND AND PURPOSE:</h3> DWI with conventional single-shot EPI of the pituitary gland is hampered by strong susceptibility artifacts. Our purpose was to evaluate feasibility intravoxel incoherent motion assessment using based on TSE normal anterior lobe. <h3>MATERIALS METHODS:</h3> The parameters, including true diffusion coefficient (<i>D</i>), perfusion fraction (<i>f</i>), and pseudo-diffusion (<i>D</i>*), were obtained TSE-DWI in 5 brain regions (the pons, WM GM vermis, genu...
Purpose: We compared the regional cerebral blood flow (rCBF) obtained by pulsed continuous arterial spin labeling (pCASL) and iodine-123-N-isopropyl-p-iodoamphetamine (IMP) single photon emission computed tomography (SPECT) using 3-dimensional stereotactic region-of-interest (ROI) software for automated definition of ROIs in anatomic regions brain.Methods: Thirteen patients with cerebrovascular occlusive disease three transient ischemic attacks underwent pCASL IMP SPECT imaging. rCBF values...
Prediction of tumor consistency is valuable for planning transsphenoidal surgery pituitary adenoma. A prospective study was conducted involving 49 participants with adenoma to determine whether quantitative pharmacokinetic analysis dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) useful predicting adenomas. Pharmacokinetic parameters in the adenomas including volume extravascular extracellular space (EES) per unit tissue (ve), blood plasma (vp), transfer constant between and...
This study aimed to elucidate the impact of effective diffusion time setting on apparent coefficient (ADC)-based differentiation between primary central nervous system lymphomas (PCNSLs) and glioblastomas (GBMs) investigate usage time-dependent magnetic resonance imaging (MRI) parameters.A retrospective was conducted involving 21 patients with PCNSLs 66 GBMs using weighted (DWI) sequences oscillating gradient spin-echo (Δeff = 7.1 ms) conventional pulsed 44.5 ms). In addition ADC maps at two...
To investigate the utility of time-dependent DWI for differentiating between glioblastoma and brain metastasis, 65 patients with 27 metastasis were examined. ADC was not significantly different two tumor types neither at a short (7.1ms) nor long (44.5ms) diffusion time, whereas difference (ΔADCmean, ΔADC5, ΔADC95) change ratio (rADCmean, rADC5, rADC95) higher in than glioblastoma. The ΔADCmean showed best diagnostic performance. rADCmean significant negative correlation ADC44.5msmean, but...
Motivation: Differentiation between functioning and non-functioning pituitary adenoma (PA) is clinically relevant. Feasibility of their microstructural differentiation undetermined. Goal(s): To investigate whether the time-dependent diffusion MRI can distinguish from PA. Approach: Twenty-four patients with 30 PA were examined. Pituitary DWI was performed using inner FOV EPI based on 2D-selective radiofrequency excitations oscillating (diffusion time=7.1ms) pulsed (36.3ms) gradient...
Background and Purpose Differentiation between functioning nonfunctioning pituitary adenomas/pituitary neuroendocrine tumors (PAs) is clinically relevant. The goal of this study was to determine the feasibility using time‐dependent diffusion MRI (dMRI) for microstructural characterization PAs. Methods included 54 participants, 24 with PA 30 PA. Time‐dependent dMRI gland performed an inner field‐of‐view echo‐planar imaging based on 2‐dimensional‐selective radiofrequency excitations...
Differentiation between hemangioblastoma and brain metastasis remains a challenge in neuroradiology using conventional MRI. Amide proton transfer (APT) imaging can provide unique molecular information. This study aimed to evaluate the usefulness of APT differentiating hemangioblastomas from metastases compare with diffusion-weighted dynamic susceptibility contrast perfusion-weighted imaging.This retrospective included 11 patients 20 metastases. Region-of-interest analyses were employed...
Background Diffusion‐weighted imaging (DWI) has been used for the detection and characterization of liver tumors because it excellent contrast resolution. DWI using short tau inversion recovery (STIR) can improve tumor‐to‐liver after gadolinium ethoxybenzyl diethylenetriaminepentaacetic acid (Gd‐EOB‐DTPA) administration that shortens T 1 relaxation parenchyma. Purpose To quantitatively qualitatively compare conspicuity malignant on Gd‐EOB‐DTPA between STIR chemical shift selective (CHESS)...
Prediction of tumor consistency is valuable for planning transsphenoidal surgery pituitary adenoma. A prospective study was conducted involving 49 participants with adenoma to determine whether quantitative pharmacokinetic analysis dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) useful predicting Pharmacokinetic parameters in the adenomas including volume extravascular extracellular space (EES) per unit tissue (ve), blood plasma (vp), transfer constant between and EES...
To determine whether time-dependent DWI parameters and microscopic diffusion anisotropy (&mu;FA) are useful for differentiating between glioblastoma primary central nervous system lymphoma (PCNSL), 51 patients with 13 PCNSL were examined. In addition to ADC at two different times, difference (&Delta;ADC) change ratio (rcADC) significantly the tumor types, while no was shown &mu;FA. rcADC showed best diagnostic performance followed by &Delta;ADC.