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Setup time analysis for stereotactic body radiotherapy in O-ring linear accelerator without rotational correction
Setup time analysis for stereotactic body radiotherapy in O-ring linear accelerator without rotational correction
This study analyse setup time (ST) and frequency of on-board imaging for stereotactic abdomen (liver, stomach), lung, and ...
Evaluation of patient radiation dose and risk of cancer from CT examinations
Evaluation of patient radiation dose and risk of cancer from CT examinations
Computed tomography (CT) examinations have been increasingly requested and become the major sources of patient exposure. T...
Deep learning-based attenuation correction method in 99mTc-GSA SPECT/CT hepatic imaging: a phantom study
Deep learning-based attenuation correction method in 99mTc-GSA SPECT/CT hepatic imaging: a phantom study
This study aimed to evaluate a deep learning-based attenuation correction (AC) method to generate pseudo-computed tomograp...
Hierarchical approach for pulmonary-nodule identification from CT images using YOLO model and a 3D neural network classifier
Hierarchical approach for pulmonary-nodule identification from CT images using YOLO model and a 3D neural network classifier
This study aimed to assist doctors in detecting early-stage lung cancer. To achieve this, a hierarchical system that can d...
Impact of gadolinium concentration and cell oxygen levels on radiobiological characteristics of gadolinium neutron capture therapy technique in brain tumor treatment
Impact of gadolinium concentration and cell oxygen levels on radiobiological characteristics of gadolinium neutron capture therapy technique in brain tumor treatment
Neutron capture therapy (NCT) with various concentrations of gadolinium (157Gd) is one of the treatment modalities for gli...
Gold nanoparticles conjugated with epidermal growth factor and gadolinium for precision delivery of contrast agents in magnetic resonance imaging
Gold nanoparticles conjugated with epidermal growth factor and gadolinium for precision delivery of contrast agents in magnetic resonance imaging
The utilization of contrast agents in magnetic resonance imaging (MRI) has become increasingly important in clinical diagn...
Task-based assessment of resolution properties of CT images with a new index using deep convolutional neural network
Task-based assessment of resolution properties of CT images with a new index using deep convolutional neural network
In this study, we propose a method for obtaining a new index to evaluate the resolution properties of computed tomography ...
Dosimetric comparison of four-dimensional computed tomography based internal target volume against variations in respiratory motion during treatment between volumetric modulated arc therapy and three-dimensional conformal radiotherapy in lung stereotactic body radiotherapy
Dosimetric comparison of four-dimensional computed tomography based internal target volume against variations in respiratory motion during treatment between volumetric modulated arc therapy and three-dimensional conformal radiotherapy in lung stereotactic body radiotherapy
This study focused on the dosimetric impact of variations in respiratory motion during lung stereotactic body radiotherapy...
Knowledge-based model building for treatment planning for prostate cancer using commercial treatment planning quality assurance software tools
Knowledge-based model building for treatment planning for prostate cancer using commercial treatment planning quality assurance software tools
This study devised a method to efficiently launch the RapidPlan model for volumetric-modulated arc therapy for prostate ca...
Study on the radiofrequency transparency of partial-ring oval-shaped prototype PET inserts in a 3 T clinical MRI system
Study on the radiofrequency transparency of partial-ring oval-shaped prototype PET inserts in a 3 T clinical MRI system
The purpose of this study is to evaluate the RF field responses of partial-ring RF-shielded oval-shaped positron emission ...
Creation, evolution, and future challenges of ion beam therapy from a medical physicist’s viewpoint (Part 3): Chapter 3. Clinical research, Chapter 4. Future challenges, Chapter 5. Discussion, and Conclusion
Creation, evolution, and future challenges of ion beam therapy from a medical physicist’s viewpoint (Part 3): Chapter 3. Clinical research, Chapter 4. Future challenges, Chapter 5. Discussion, and Conclusion
Clinical studies of ion beam therapy have been performed at the Lawrence Berkeley Laboratory (LBL), National Institute of ...
A spatio-temporal image analysis for growth of indeterminate pulmonary nodules detected by CT scan
A spatio-temporal image analysis for growth of indeterminate pulmonary nodules detected by CT scan
The objective is to evaluate the performance of computational image classification for indeterminate pulmonary nodules (IP...
Improving the depiction of small intracranial vessels in head computed tomography angiography: a comparative analysis of deep learning reconstruction and hybrid iterative reconstruction
Improving the depiction of small intracranial vessels in head computed tomography angiography: a comparative analysis of deep learning reconstruction and hybrid iterative reconstruction
This study aimed to evaluate the ability of deep learning reconstruction (DLR) compared to that of hybrid iterative recons...
Simplified assessment for chemical exchanged saturation transfer (CEST) imaging: local offset frequency and CEST effect
Simplified assessment for chemical exchanged saturation transfer (CEST) imaging: local offset frequency and CEST effect
The aim of this study is to develop a novel phantom for the evaluation of clinical CEST imaging settings, e.g., B0 and B1 ...
Development and evaluation of an integrated liver nodule diagnostic method by combining the liver segment division and lesion localization/classification models for enhanced focal liver lesion detection
Development and evaluation of an integrated liver nodule diagnostic method by combining the liver segment division and lesion localization/classification models for enhanced focal liver lesion detection
The purpose of the study was to develop a liver nodule diagnostic method that accurately localizes and classifies focal li...
The montage method improves the classification of suspected acute ischemic stroke using the convolution neural network and brain MRI
The montage method improves the classification of suspected acute ischemic stroke using the convolution neural network and brain MRI
This study investigated the usefulness of the montage method that combines four different magnetic resonance images into o...
A practical method to simulate realistic reduced-exposure CT images by the addition of computationally generated noise
A practical method to simulate realistic reduced-exposure CT images by the addition of computationally generated noise
Computed tomography (CT) scanning protocols should be optimized to minimize the radiation dose necessary for imaging. The ...
Development and evaluation of a novel water-based pigment marker for radiation therapy skin marking
Development and evaluation of a novel water-based pigment marker for radiation therapy skin marking
Skin marks are widely used in external radiation therapy to ensure the accuracy of the irradiation position. However, conv...
Pre-acquired CT-based attenuation correction with automated headrest removal for a brain-dedicated PET system
Pre-acquired CT-based attenuation correction with automated headrest removal for a brain-dedicated PET system
Attenuation correction (AC) is essential for quantitative positron emission tomography (PET) images. Attenuation coefficie...
Characteristics of detection accuracy of the patient setup using InBore optical patient positioning system
Characteristics of detection accuracy of the patient setup using InBore optical patient positioning system
This study aimed to evaluate the detection accuracy of the AlignRT-InBore system in surface-guided radiation therapy using...
Shifting-field-of-view technique enhancing the inflow effect for identifying tumor/vessel boundaries in MRI for radiotherapy treatment planning
Shifting-field-of-view technique enhancing the inflow effect for identifying tumor/vessel boundaries in MRI for radiotherapy treatment planning
This study presents two cases of tumors in contact with the inferior vena cava during radiotherapy, and introduces a clini...
Verification of optimal conditions for the scattering correction of 123I-FP-CIT SPECT on a single-photon emission tomography system with a two-detector whole-body cadmium–zinc–telluride semiconductor detector
Verification of optimal conditions for the scattering correction of 123I-FP-CIT SPECT on a single-photon emission tomography system with a two-detector whole-body cadmium–zinc–telluride semiconductor detector
To identify the optimal scattering correction for 123I-FP-CIT SPECT (DAT-SPECT) using a two-detector whole-body cadmium...
Discrimination of inter-crystal scattering events by signal processing for the X'tal cube PET detector
Discrimination of inter-crystal scattering events by signal processing for the X'tal cube PET detector
Inter-crystal scattering (ICS) events cause degradation of the contrast in PET images. We developed the X’tal cube P...
Effect of shape of automatic dose rate control and wedge compensation filter on radiation dose in an angiography system with a flat-panel detector
Effect of shape of automatic dose rate control and wedge compensation filter on radiation dose in an angiography system with a flat-panel detector
The purpose was to investigate air-kerma area product (PKA) and entrance surface air-kerma rate ( $$\dot$$ a,e) on the eff...
Investigation of uncertainty in internal target volume definition for lung stereotactic body radiotherapy
Investigation of uncertainty in internal target volume definition for lung stereotactic body radiotherapy
This study evaluated the validity of internal target volumes (ITVs) defined by three- (3DCT) and four-dimensional computed...
Current status of the educational environment to acquire and maintain the professional skills of radiotherapy technology and medical physics specialists in Japan: a nationwide survey
Current status of the educational environment to acquire and maintain the professional skills of radiotherapy technology and medical physics specialists in Japan: a nationwide survey
This study aimed to investigate the educational environment of radiotherapy technology and medical physics specialists (RT...
Novel method for calculating the effective dose using size-specific dose estimates conversion factors in abdomen–pelvis computed tomography
Novel method for calculating the effective dose using size-specific dose estimates conversion factors in abdomen–pelvis computed tomography
We propose a novel method for calculating the effective dose that closely reflects the individual attenuation, utilizing t...
Development of a new coordinate calibration phantom for a light-section-based optical surface monitoring system
Development of a new coordinate calibration phantom for a light-section-based optical surface monitoring system
A calibration phantom made of Derlin requires manual translational and rotational adjustments when calibrating a light-sec...
The influence of image reconstruction methods on the diagnosis of pulmonary emphysema with convolutional neural network
The influence of image reconstruction methods on the diagnosis of pulmonary emphysema with convolutional neural network
This study investigated the influence of iterative reconstruction (IR) methods on computed tomography (CT) images when tra...
Tri- and bi-exponential diffusion analyses of the kidney: effect of respiratory-controlled acquisition on diffusion parameters
Tri- and bi-exponential diffusion analyses of the kidney: effect of respiratory-controlled acquisition on diffusion parameters
This study examined whether respiratory-controlled acquisition influences diffusion parameters obtained with intravoxel in...
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