A5102792582- Advanced MRI Techniques and Applications
- Meningioma and schwannoma management
- Acute Ischemic Stroke Management
- Pituitary Gland Disorders and Treatments
- Multiple Sclerosis Research Studies
- Cerebrovascular and Carotid Artery Diseases
- Systemic Lupus Erythematosus Research
- Gastrointestinal disorders and treatments
- Glioma Diagnosis and Treatment
- Ultrasound Imaging and Elastography
- Head and Neck Surgical Oncology
- Brain Tumor Detection and Classification
- Pancreatitis Pathology and Treatment
- Lung Cancer Diagnosis and Treatment
- RNA regulation and disease
- MRI in cancer diagnosis
- Atherosclerosis and Cardiovascular Diseases
- IgG4-Related and Inflammatory Diseases
- Ultrasound and Hyperthermia Applications
- Image Processing Techniques and Applications
- Medical Imaging and Analysis
- Ophthalmology and Eye Disorders
- Spinal Fractures and Fixation Techniques
- Health, Environment, Cognitive Aging
- Head and Neck Cancer Studies
Hirosaki University
2022
University of Occupational and Environmental Health Japan
2003-2018
<h3>BACKGROUND AND PURPOSE:</h3> Preoperative evaluation of pituitary macroadenoma tumor consistency is important for neurosurgery. Thus, we aimed to retrospectively assess the role contrast-enhanced FIESTA in predicting macroadenomas. <h3>MATERIALS METHODS:</h3> Twenty-nine patients with macroadenomas underwent conventional MR imaging sequences and before surgery. Two neuroradiologists assessed FIESTA, T1WI, T2WI. On basis surgical findings, were classified by neurosurgeons as either soft...
From a surgical perspective, presurgical prediction of meningioma consistency is beneficial.To quantitatively analyze the correlation between magnetic resonance (MR) signal intensity (SI) or apparent diffusion coefficient (ADC) and to determine which MR sequence could help predicting hard meningiomas.This study included 43 patients with meningiomas who underwent preoperative imaging (MRI), including T1-weighted (T1W) imaging, T2-weighted (T2W) fluid-attenuated inversion recovery (FLAIR),...
Purpose To evaluate whether contrast material–enhanced (CE) fast imaging employing steady-state acquisition (FIESTA) can depict the anterior optic pathways in patients with large suprasellar tumors. Materials and Methods Institutional review board approval was obtained. Twenty-eight tumors undergoing surgical treatment (19 pituitary adenomas, six meningiomas, three additional miscellaneous tumors) underwent preoperative magnetic resonance (MR) imaging, including CE FIESTA, at 3.0 T. Two...
To determine whether partial loss of the hippocampal striation (PLHS) at 3.0 T is more accurate than currently accepted methods using conventional magnetic resonance (MR) imaging to detect sclerosis in medial temporal lobe epilepsy (MTLE).This retrospective study had institutional review board approval, and informed consent was waived. Fluid-attenuated inversion-recovery (FLAIR) MR images T2-weighted oblique coronal plane 22 consecutive patients (10 men, 12 female patients; mean age, 41.0...
<h3>BACKGROUND AND PURPOSE:</h3> Contrast-enhanced FIESTA can depict anterior optic pathways in patients with large suprasellar tumors. We assessed whether the degree of kink nerve at canal orifice on contrast-enhanced correlates postoperative improvement visual impairment pituitary macroadenoma. <h3>MATERIALS METHODS:</h3> Thirty-one macroadenoma who underwent preoperative MR imaging and an operation were evaluated. measured kinking angle sagittal oblique parallel to nerve; was defined as...
BACKGROUND Systemic lupus erythematosus (SLE) is related to vasculitis, which causes brain infarctions; however, the pathology of large cerebral vessels has not been fully established. PURPOSE To demonstrate prevalence vessel wall lesions (VWLs) in SLE patients using 3D imaging and assess relationship between VWLs infarctions. STUDY TYPE Retrospective. SUBJECTS Sixty 50 healthy subjects (HS). FIELD STRENGTH/SEQUENCE Each subject underwent 3T MRI, included FSE PDWI (CUBE). ASSESSMENT For each...
Purpose To compare the MR findings including diffusion‐weighted imaging (DWI) between symptomatic and asymptomatic patients with autoimmune pancreatitis (AIP) to determine whether DWI can be used as an objective biomarker for AIP, which is considered indication steroid therapy. Materials Methods This retrospective study was approved by our institutional review board. MRI scans from 37 AIP (symptomatic, n = 19; asymptomatic, 18) were retrospectively evaluated. The studies performed on a 1.5...
This paper proposes a computerized method for automated detection of acute cerebral infarction (ACI) on CT images. is based the difference value image features in two regions-of-interests (ROIs) selected at symmetrical positions. In our method, first, we segmented brain parenchyma by thresholding technique after correction inclination midsagittal plane with translation and rotation image. Then middle artery (MCA) region parenchyma. Moreover, many ROIs 32×32 matrix size were MCA region....
Although the clinical importance of cortical microinfarcts has become well-recognized recently, evolution on MR imaging is not fully understood. The aim this study was to examine temporal changes in acute using susceptibility-weighted and conventional imaging.Patients with infarcts located and/or juxtacortical region measuring ≤10 mm axial diameter based diffusion-weighted who had a follow-up 3T were retrospectively included study. All lesions did show hypointensity initial T2*WI. For...
A 60-year-old man with a history of rheumatoid arthritis experienced bloody stool and presented in state shock.Emergency endoscopy showed upper gastrointestinal bleeding from duodenal ulcer.Endoscopic hemostasis was attempted but failed.Gastroduodenal angiography revealed an extravasation branch the anterior superior pancreaticoduodenal artery (ASPDA).Hemostasis achieved by subsequent selective transarterial embolization (TAE) N-butyl-2-cyanoacrylate (NBCA) performed via branch.Although no...
This study investigated the relationship between grey matter (GM) volume and blood biomarkers, pressure, obesity. We aimed to elucidate lifestyle factors that promote GM loss. A total of 1799 participants underwent brain dock as a medical checkup. Data regarding obesity measurements, standard biomarkers were obtained. Further, magnetic resonance imaging (MRI), including high-resolution T1-weighted imaging, was performed. calculated healthcare quotient (GM-BHQ), which represents deviation...