A5009376014- Medical Imaging Techniques and Applications
- Hepatocellular Carcinoma Treatment and Prognosis
- Liver Disease Diagnosis and Treatment
- Radiomics and Machine Learning in Medical Imaging
- MRI in cancer diagnosis
- Radiation Dose and Imaging
- Bone health and treatments
- Bone and Joint Diseases
- Advanced X-ray and CT Imaging
- Hepatitis B Virus Studies
- Digital Radiography and Breast Imaging
- Cholangiocarcinoma and Gallbladder Cancer Studies
- Medical Imaging and Pathology Studies
- Gallbladder and Bile Duct Disorders
- Liver Disease and Transplantation
- Advanced Radiotherapy Techniques
Kochi Medical School Hospital
2021-2025
University of Kochi
2016
Although quantitative analysis using standardized uptake value (SUV) becomes realistic in clinical single-photon emission computed tomography/computed tomography (SPECT/CT) imaging, reconstruction parameter settings can deliver different results among SPECT/CT systems. This study aims to propose a use of the digital reference object (DRO), which is National Electrical Manufacturers Association (NEMA) phantom-like developed by Quantitative Imaging Biomarker Alliance (QIBA)...
Preoperative assessment of the degree liver fibrosis is important to determine treatment strategies. In this study, galactosyl human serum albumin single-photon emission-computed tomography and ethoxybenzyl (EOB) contrast-enhanced magnetic resonance imaging (MRI) were used assess changes in hepatocyte function after fibrosis, standardized uptake value (SUV) was combined with gadolinium EOB-diethylenetriaminepentaacetic acid evaluate its added for staging. A total 484 patients diagnosed...
Abstract Purpose . The aim of this study was to assess the repeatability SUV normalized by liver volume (SUVL) between two receptor SPECT/CT studies performed on different days in patients with ICG-R15 values within normal range. Methods 935 who underwent scintigraphy January 2010 and August 2018 were included. Patients resection, hepatic arterial embolization or had >10% scans excluded, 38 finally included analysis. SUVL assessed using intraclass correlation coefficient (ICC) (1.1)...
Background: The authors aimed to elucidate the effect of liver space-occupying lesions (SOL) on quantitative index hepatic reserve, calculated using dynamic planar image (LHLplanar), and a three-dimensional (LHLSPECT) combined modality single-photon emission computed tomography (SPECT/CT). Material Methods : Water balloons different volumes that simulated SOL were placed in various positions cardiac-liver phantom examine effects visualization indicators (LHLplanar LHLSPECT). A 200 mL water...
Purpose: Quantitative analysis using a standardized uptake value (SUV) has become possible for single-photon emission computed tomography-computed tomography (SPECT-CT) of bone. However, previous research was targeted to the trunk area, and there are few studies head neck region. Therefore, purpose this study determine optimal image reconstruction conditions bone SPECT phantom study. Method: The radioactivity concentration 99mTc solution enclosed in cylindrical set same count rate as...
The enhancement effect ratio using ethoxybenzyl (EOB) contrast is useful in the assessment of liver fibrosis. Since calculated by setting a region interest (ROI) liver, ROI method may affect ratio. One methods fibrosis evaluation placing each Quinault segment, but this requires considerable time. Therefore, it necessary to consider reproducible ROIs segment.In one we examined four (two right lobe and two left lobe) (one lobe). size was set 1 cm2, 4 maximum area that fits within placement...
The R value is adopted as a metric for the effectiveness of respiratory waveform in Advanced Motion Free implemented PET scanner data-driven gating (DDG) algorithm. effects changes various factors on values were evaluated by phantom analysis.We used programmable motion QUASAR with sphere filled an 18F solution. Respiratory simulation was performed changing diameter, radioactivity concentration, amplitude, cycle, and shape. Three evaluations performed. (1) power spectra calculated from input...
We aimed to clarify the error of displayed value against measured average glandular dose (AGD) in two-dimensional (2D) mammography and digital breast tomosynthesis (DBT) evaluate accuracy AGD as an index estimate AGD.Polymethyl methacrylate (PMMA) phantoms with thicknesses varying from 20 80 mm were imaged, values on system used AGD. The incident air kerma half-valued layer measured, 2D was calculated using equation by Dance et al. On other hand, DBT correcting for different projection...