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Standardization of radiation therapy quality control system through mutual quality control based on failure mode and effects analysis
Standardization of radiation therapy quality control system through mutual quality control based on failure mode and effects analysis
The advancement of irradiation technology has increased the demand for quality control of radiation therapy equipment. Con...
Comprehensive image quality comparison of conventional and new flat panel detectors under bedside chest radiography beam conditions
Comprehensive image quality comparison of conventional and new flat panel detectors under bedside chest radiography beam conditions
Recently, a novel wireless flat-panel detector with auto-exposure control has become available. This study aimed to elucid...
Evaluation of dose distributions and respiratory motion tolerance for layer-stacking conformal carbon-ion radiotherapy
Evaluation of dose distributions and respiratory motion tolerance for layer-stacking conformal carbon-ion radiotherapy
While layer-stacking irradiation provides a conformal dose distribution, it is vulnerable to respiratory motion. Consideri...
Pulsation artifact reduction using compressed sensitivity encoding in Gd-EOB-DTPA contrast-enhanced magnetic resonance imaging
Pulsation artifact reduction using compressed sensitivity encoding in Gd-EOB-DTPA contrast-enhanced magnetic resonance imaging
In Gd-EOB-DTPA-enhanced MRI, cardiac pulsation artifacts in the left lobe often hinder diagnosis, the image quality need t...
Effectiveness of the air-gap method for reducing radiation dose in neonate CT examinations
Effectiveness of the air-gap method for reducing radiation dose in neonate CT examinations
The air-gap method is a technique employed to control dose distribution and radiation scattering in medical imaging. By in...
Deep learning-based approach for acquisition time reduction in ventilation SPECT in patients after lung transplantation
Deep learning-based approach for acquisition time reduction in ventilation SPECT in patients after lung transplantation
We aimed to evaluate the image quality and diagnostic performance of chronic lung allograft dysfunction (CLAD) with lung v...
Anomaly detection scheme for lung CT images using vector quantized variational auto-encoder with support vector data description
Anomaly detection scheme for lung CT images using vector quantized variational auto-encoder with support vector data description
This study aims to develop an anomaly-detection scheme for lesions in CT images. Our database consists of lung CT images o...
Optimization of image shoot timing for cerebral veins 3D-digital subtraction angiography by interventional angiography systems
Optimization of image shoot timing for cerebral veins 3D-digital subtraction angiography by interventional angiography systems
3D-digital subtraction angiography (3D-DSA) is essential for understanding the anatomical structure of cerebral veins, cru...
Optimization of image reconstruction technique for respiratory-gated lung stereotactic body radiotherapy treatment planning using four-dimensional CT: a phantom study
Optimization of image reconstruction technique for respiratory-gated lung stereotactic body radiotherapy treatment planning using four-dimensional CT: a phantom study
Patient respiration is characterized by respiratory parameters, such as cycle, amplitude, and baseline drift. In treatment...
Visualization of X-ray fields, overlaps, and over-beaming on surface of the head in spiral computed tomography using computer-aided design-based X-ray beam modeling
Visualization of X-ray fields, overlaps, and over-beaming on surface of the head in spiral computed tomography using computer-aided design-based X-ray beam modeling
To visualize the X-ray fields, overlaps, and over-beaming on the skin surface during spiral head CT scanning. The measured...
Evaluation of patient-specific quality assurance for fractionated stereotactic treatment plans with 6 and 10MV photon beams in beam-matched linacs
Evaluation of patient-specific quality assurance for fractionated stereotactic treatment plans with 6 and 10MV photon beams in beam-matched linacs
Beam-matched linear accelerators (LA’s) require accurate and precise dosimetry for fractionated stereotactic treatme...
The effect on gastrointestinal peristalsis for magnetic resonance cholangiopancreatography during breath-holding methods
The effect on gastrointestinal peristalsis for magnetic resonance cholangiopancreatography during breath-holding methods
The breath-hold (BH) 3D magnetic resonance cholangiopancreatography method has been reported to suppress “respirator...
LIT-Unet: a lightweight and effective model for medical image segmentation
LIT-Unet: a lightweight and effective model for medical image segmentation
This study aimed to design a simple and efficient automatic segmentation model for medical images, so as to facilitate doc...
A novel internal target volume definition based on velocity and time of respiratory target motion for external beam radiotherapy
A novel internal target volume definition based on velocity and time of respiratory target motion for external beam radiotherapy
This study aimed to develop a novel internal target volume (ITV) definition for respiratory motion targets, considering ta...
An updated overview of radiomics-based artificial intelligence (AI) methods in breast cancer screening and diagnosis
An updated overview of radiomics-based artificial intelligence (AI) methods in breast cancer screening and diagnosis
Current imaging methods for diagnosing breast cancer (BC) are associated with limited sensitivity and specificity and mode...
Effect of frame rate on image quality in cardiology evaluated using an indirect conversion dynamic flat-panel detector
Effect of frame rate on image quality in cardiology evaluated using an indirect conversion dynamic flat-panel detector
To verify the effect of the frame rate on image quality in cardiology, we used an indirect conversion dynamic flat-panel d...
Optimum delineation of skin structure for dose calculation with the linear Boltzmann transport equation algorithm in radiotherapy treatment planning
Optimum delineation of skin structure for dose calculation with the linear Boltzmann transport equation algorithm in radiotherapy treatment planning
This study investigated the effectiveness of placing skin-ring structures to enhance the precision of skin dose calculatio...
Single-point macromolecular proton fraction mapping using a 0.3 T permanent magnet MRI system: phantom and healthy volunteer study
Single-point macromolecular proton fraction mapping using a 0.3 T permanent magnet MRI system: phantom and healthy volunteer study
In a 0.3 T permanent-magnet magnetic resonance imaging (MRI) system, quantifying myelin content is challenging ow...
Parameter optimisation for image acquisition and stacking in carbon dioxide digital subtraction angiography
Parameter optimisation for image acquisition and stacking in carbon dioxide digital subtraction angiography
The aim of this study was to optimise the vessel angle as well as the stack number from the profiles of carbon dioxide dig...
Assessing knowledge about medical physics in language-generative AI with large language model: using the medical physicist exam
Assessing knowledge about medical physics in language-generative AI with large language model: using the medical physicist exam
This study aimed to evaluate the performance for answering the Japanese medical physicist examination and providing the be...
Joint segmentation of sternocleidomastoid and skeletal muscles in computed tomography images using a multiclass learning approach
Joint segmentation of sternocleidomastoid and skeletal muscles in computed tomography images using a multiclass learning approach
Deep-learning-based methods can improve robustness against individual variations in computed tomography (CT) images of the...
Estimation of the lateral variation of photon beam energy spectra using the percentage depth dose reconstruction method
Estimation of the lateral variation of photon beam energy spectra using the percentage depth dose reconstruction method
In photon-collapsed cone convolution (pCCC) algorithm of the Monaco treatment planning system (TPS), the central-axis ener...
Identification of peroneal artery perforators using non-contrast-enhanced T2prep multi-shot gradient echo planar imaging MRA
Identification of peroneal artery perforators using non-contrast-enhanced T2prep multi-shot gradient echo planar imaging MRA
The purpose of this study was to investigate the spatial resolution of non-contrast-enhanced (CE) T2prep multi-shot gradie...
Evaluation of calculation accuracy and computation time in a commercial treatment planning system for accelerator-based boron neutron capture therapy
Evaluation of calculation accuracy and computation time in a commercial treatment planning system for accelerator-based boron neutron capture therapy
This study aims to evaluate the feasibility of using a commercially available boron neutron capture therapy (BNCT) dose ca...
Development of deep learning-based novel auto-segmentation for the prostatic urethra on planning CT images for prostate cancer radiotherapy
Development of deep learning-based novel auto-segmentation for the prostatic urethra on planning CT images for prostate cancer radiotherapy
Urinary toxicities are one of the serious complications of radiotherapy for prostate cancer, and dose-volume histogram of ...
Effect of deep learning reconstruction on the assessment of pancreatic cystic lesions using computed tomography
Effect of deep learning reconstruction on the assessment of pancreatic cystic lesions using computed tomography
This study aimed to compare the image quality and detection performance of pancreatic cystic lesions between computed tomo...
Two-step optimization for accelerating deep image prior-based PET image reconstruction
Two-step optimization for accelerating deep image prior-based PET image reconstruction
Deep learning, particularly convolutional neural networks (CNNs), has advanced positron emission tomography (PET) image re...
Evaluation of monthly variations in electrometer calibration coefficients using a charge generator for radiation therapy
Evaluation of monthly variations in electrometer calibration coefficients using a charge generator for radiation therapy
Electrometers are important devices that are part of the standard dosimetry system. Therefore, we evaluated the variation ...
Clinical application of single-shot fast spin-echo sequence for cerebrospinal fluid flow MR imaging
Clinical application of single-shot fast spin-echo sequence for cerebrospinal fluid flow MR imaging
In normal-pressure hydrocephalus, disturbances in cerebrospinal fluid (CSF) circulation occur; therefore, understanding CS...
Multi-institutional questionnaire-based survey on online adaptive radiotherapy performed using commercial systems in Japan in 2023
Multi-institutional questionnaire-based survey on online adaptive radiotherapy performed using commercial systems in Japan in 2023
In this study, we aimed to conduct a survey on the current clinical practice of, staffing for, commissioning of, and staff...
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