Imaging findings in inflammatory disease of the genital organs
AbstractThis review focuses on inflammatory diseases of female and male genital organs and discusses their epidemiology, pathogenesis, clinical presentation, and imaging findings. The female section covers pelvic inflammatory disease (PID) primarily caused by sexually transmitted infections (STIs) that affect the uterus, fallopian tubes, and ovaries. Unusual causes such as actinomycosis and tuberculosis have also been explored. The male section delves into infections affecting the vas deferens, epididymis, testes, prostate, and seminal vesicles. Uncommon causes such as tuberculosis, and Zinner syndrome have also been discu...
Source: Japanese Journal of Radiology - January 2, 2024 Category: Radiology Source Type: research
Serial assessment of computed tomography angiography for pulmonary and systemic arteries using a reduced contrast agent dose for the diagnosis of systemic artery-to-pulmonary artery shunts
ConclusionCTA-PS using a reduced contrast agent dose protocol could improve the overall diagnostic confidence of SPSs, owing to better visualization of CT imaging findings associated with SPSs compared to individual assessments of CTA-P or CTA-S. Therefore, CTA-PS can be used as an alternative preembolization evaluation modality to conventional angiography in patients with hemoptysis suspected of having SPSs. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - December 27, 2023 Category: Radiology Source Type: research
MRI findings of malignant transformation arising from mature cystic teratoma of the ovary: comparison with benign mature cystic teratoma
ConclusionCompared with BMCT, MT-MCT demonstrated a larger maximum diameter, lower occupancy rate of fat components, and sessile solid components. The characteristic configuration of solid components was endophytic or exophytic sessile in MT-MCT and endophytic papillary in BMCT. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - December 26, 2023 Category: Radiology Source Type: research
Short repetition time diffusion-weighted imaging improves visualization of prostate cancer
ConclusionsOur data showed that the short TR DWI1000 may provide better image quality than did the long TR DWI1000 and may improve visualization and diagnostic performance of PCa for readers. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - December 21, 2023 Category: Radiology Source Type: research
MRI compatibility study of a prototype radiofrequency penetrable oval PET insert at 3 T
ConclusionsThe prototype floating PET insert was a safety concern for the clinical MRI system, and this compatibility study provided clearance for developing a large body size floating PET insert for the existing MRI system. Because of the RF shield of the insert, relatively large RF powers compared to the MRI-only case were required. Because of this and also due to low RF sensitivity of the body coil, the SNRs reduced largely. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - December 19, 2023 Category: Radiology Source Type: research
Solid tumours showing oligoprogression to immune checkpoint inhibitors have the potential for abscopal effects
ConclusionPatients with oligoprogressive disease may be promising targets with potential for AEs. AEs can lead to improved PFS and, in rare cases, to a certain progression-free period without treatment.Secondary AbstractIrradiating solid tumours in patients with oligoprogressive disease during immune checkpoint inhibitor therapy may be a promising target with the potential for abscopal effects (AEs). AEs can lead to improved progression-free survival and, in rare cases, to a certain progression-free period without treatment. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - December 14, 2023 Category: Radiology Source Type: research
Improvement of motion artifacts using dynamic whole-body 18F-FDG PET/CT imaging
ConclusionSerial dynamic whole-body FDG PET imaging can minimize body motion artifacts by summation of the images before the body motion. Such serial dynamic study may be a choice for PET imaging to eliminate motion artifacts. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - December 14, 2023 Category: Radiology Source Type: research
Solid tumours showing oligoprogression to immune checkpoint inhibitors have the potential for abscopal effects
ConclusionPatients with oligoprogressive disease may be promising targets with potential for AEs. AEs can lead to improved PFS and, in rare cases, to a certain progression-free period without treatment.Secondary AbstractIrradiating solid tumours in patients with oligoprogressive disease during immune checkpoint inhibitor therapy may be a promising target with the potential for abscopal effects (AEs). AEs can lead to improved progression-free survival and, in rare cases, to a certain progression-free period without treatment. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - December 14, 2023 Category: Radiology Source Type: research
Improvement of motion artifacts using dynamic whole-body 18F-FDG PET/CT imaging
ConclusionSerial dynamic whole-body FDG PET imaging can minimize body motion artifacts by summation of the images before the body motion. Such serial dynamic study may be a choice for PET imaging to eliminate motion artifacts. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - December 14, 2023 Category: Radiology Source Type: research
Quantitative susceptibility mapping shows lower brain iron content in children with childhood epilepsy with centrotemporal spikes
ConclusionsThis study suggests that the potential iron deficiency in certain brain regions is associated with CECTS, which might be helpful for further illumination of potential pathogenesis mechanism of CECTS. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - December 1, 2023 Category: Radiology Source Type: research
Comparison between InterDosi and MCNP in the estimation of photon SAFs on a series of ICRP pediatric voxelized phantoms
AbstractIn the present work, a new Monte Carlo Geant4 based code called InterDosi 1.0, was used to simulate specific absorbed fractions (SAFs) in the six reference pediatric voxel-based phantoms developed by the International Commission on Radiological Protection (ICRP). The aim of this study was to assess the ability of this code to estimate SAFs in a variety of voxel-based phantoms. A large number of photon SAFs were calculated for pairs of organs corresponding to three sources and 170 target organs/regions. A total of 108 initial photons were uniformly emitted from the source organs with eight discrete energies. In orde...
Source: Japanese Journal of Radiology - December 1, 2023 Category: Radiology Source Type: research
