Emergency radiology after a massive earthquake: clinical perspective
AbstractEarthquakes are unpredictable and inevitable disasters, causing various earthquake-related disorders. Medical imaging, including digital radiography, computed tomography, and magnetic resonance imaging, plays a key role in the evaluation of earthquake-related disorders. We here demonstrate the concept of diagnostic imaging after a massive earthquake and review the common imaging features of various disorders in casualties and evacuees. This summary of imaging features can facilitate the diagnosis of various earthquake-related disorders and promote judicious therapy planning. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - August 25, 2018 Category: Radiology Source Type: research

A comparison of two types of microcatheters used for a novel external carotid arterial sheath system for intra-arterial chemotherapy of head and neck cancer
This study aimed to assess the potential of a novel microcatheter with a steerable tip inserted through the ECAS in comparison to an existing hook-type microcatheter.Materials and methodsThe same operator used two types of microcatheters alternately for each weekly IACT session with the same patient, and the fluoroscopy time required for catheterization and the arterial selectivity of each microcatheter were compared.ResultsTen patients with advanced head and neck cancer were enrolled. The steerable microcatheter significantly shortened the fluoroscopy time required for catheterization in comparison to the hook-type microc...
Source: Japanese Journal of Radiology - August 18, 2018 Category: Radiology Source Type: research

Ultrasound imaging of the anorectal malformation during the neonatal period: a comprehensive review
AbstractAnorectal malformation (ARM) is classified as low, intermediate, or high; accurate diagnosis of the type during the early neonatal period is important to determine the appropriate initial surgical approach. This review assesses the role of ultrasound examination in the classification of ARM during the neonatal period, with a focus on landmarks on the sonogram, the approach used for sonography, and the optimal examination timing. The following three factors on the sonogram are used for the classification: location of the fistula, the distance between the distal rectal pouch and the anal dimple (perineum) (P –P...
Source: Japanese Journal of Radiology - August 17, 2018 Category: Radiology Source Type: research

Taking a proactive role in patient management of important incidental imaging findings: How can we increase the ‘value’ of diagnostic radiology service and improve quality of patient care?
(Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - August 16, 2018 Category: Radiology Source Type: research

Phase I clinical trial of percutaneous cryoablation for osteoid osteoma
AbstractPurposeThis prospective phase I trial was conducted to evaluate the safety of percutaneous cryoablation for osteoid osteoma (OO).Materials and MethodsNine patients with OO (mean tumor size: 5.9 mm; tibia,n  =  5; femur,n  =  2; lumbar spine,n  =  2) were enrolled and treated with percutaneous cryoablation. The primary endpoint was the evaluation of the treatment safety as determined using step-by-step registration. The secondary endpoints were the incidence and grade of adverse events by CTCAE version 4.0, and the short-term efficacy of t his treatment. Based on a decrease ...
Source: Japanese Journal of Radiology - August 14, 2018 Category: Radiology Source Type: research

Multicenter investigation of the incidence of inferior vena cava filter fracture
AbstractPurposeInferior vena cava filter fracture (FF) may cause life-threatening complications, including cardiac tamponade, although the actual prevalence remains unclear. Therefore, we investigated the incidence of FF.Materials and methodsData on fracture incidence with filter brands, filter positions [suprarenal (SR) vs. infrarenal (IR)], and follow-up durations were collected from the databases of eight hospitals.ResultsOf 532 patients, G ünther Tulip (GT), Trap/OptEase (TE/OE), ALN and VenaTech (VT) were implanted in 345, 147, 38 and 2 patients, respectively. Of these, filter retrieval was attempted in 110 (21.7...
Source: Japanese Journal of Radiology - August 14, 2018 Category: Radiology Source Type: research

Ultrasonography of traumatic injuries to limb peripheral nerves: technical aspects and spectrum of features
AbstractTraumatic injury to limb peripheral nerves represents an important cause of morbidity and disability. Timely diagnosis and treatment are crucial to optimizing outcomes. The initial evaluation requires a careful history, a thorough physical examination, and electrodiagnostic tests, which lead in most cases to a diagnostic suspicion, but fail to provide an extensive qualitative and quantitative assessment of the nerve damage. Ultrasonography (US) is a low-cost, non-invasive technique which allows for direct visualization of nerve internal structure. It enables performing dynamic examinations and nerves can be followe...
Source: Japanese Journal of Radiology - August 13, 2018 Category: Radiology Source Type: research

Linear shadows that connect oblique fissures and costal pleurae on the superior segments of lower lobes: evaluating the imaging findings on thin-slice lung CT
ConclusionThe linear shadows on the superior segments of the lower lobes are common structures fixing the oblique fissures. Recognition of the linear shadows can help radiologists distinguish normal structures from abnormal ones. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - July 25, 2018 Category: Radiology Source Type: research

Imaging findings in radiation therapy complications of the central nervous system
AbstractRadiation therapy is a useful treatment for tumors and vascular malformations of the central nervous system. Radiation therapy is associated with complications, including leukoencephalopathy, radiation necrosis, vasculopathy, and optic neuropathy. Secondary tumors are also often seen long after radiation therapy. Secondary tumors are often benign tumors, such as hemangiomas and meningiomas, but sometimes malignant gliomas and soft tissue sarcomas emerge. We review the imaging findings of complications that may occur after brain radiation therapy. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - July 24, 2018 Category: Radiology Source Type: research

DCE-MRI time –intensity curve visual inspection to assess pathological response after neoadjuvant therapy in locally advanced rectal cancer
ConclusionsTIC visual inspection may be one of the potential biomarkers over morphological analysis using DCE-MRI data to assess pathological response after pCRT in LARC. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - July 23, 2018 Category: Radiology Source Type: research

Denoising of 3D magnetic resonance images with multi-channel residual learning of convolutional neural network
ConclusionOur proposed MCDnCNN model has been demonstrated to robustly denoise three dimensional MR images with Rician noise. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - July 7, 2018 Category: Radiology Source Type: research

Normal liver tissue change after proton beam therapy
ConclusionsThe changes in the shape and volume of normal liver tissue are not constant, which cause a large dose distribution discrepancy in the normal liver for 2  years. Therefore, careful consideration of the dose distribution of normal liver tissue is required when planning re-irradiation. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - July 6, 2018 Category: Radiology Source Type: research

Radiofrequency ablation versus cryoablation for T1b renal cell carcinoma: a multi-center study
ConclusionOther than primary technique efficacy, the clinical outcomes between RFA and cryoablation were similar in patients with cT1b RCC. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - July 2, 2018 Category: Radiology Source Type: research

18 F-FDG PET/CT can predict chemosensitivity and proliferation of epithelial ovarian cancer via SUVmax value
ConclusionsPreoperative18F-FDG PET/CT had a predictive value on chemosensitivity and proliferation after primary debulking surgery in EOC patients noninvasively. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - June 25, 2018 Category: Radiology Source Type: research

Segmental analysis of respiratory liver motion in patients with and without a history of abdominal surgery
ConclusionThe distances and directions of respiratory motion differed for each liver segment, and a history of abdominal surgery reduced the respiratory motion of the liver. It is necessary to selectively use the internal margin setting. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - June 20, 2018 Category: Radiology Source Type: research

Measurements in cervical vertebrae CT of pediatric cases: normal values
ConclusionWe propose the obtained values as the UNL values for ADI, BDI, BCDI and PVSTT on CT images in the pediatric population from 1 to 15  years. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - June 19, 2018 Category: Radiology Source Type: research

Response to Investigation of an appropriate contrast-enhanced CT protocol for young patients following the Fontan operation
(Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - June 15, 2018 Category: Radiology Source Type: research

Simple quantification of paracardial and epicardial fat dimensions at low-dose chest CT: correlation with metabolic risk factors and usefulness in predicting metabolic syndrome
AbstractPurposeTo assess the usefulness of simple axial bi-dimensional diameters of pericardial fat tissues at low-dose chest CT, in correlation with metabolic parameters in predicting metabolic syndrome.Materials and methodsSubjects were 373 asymptomatic individuals who performed both low-dose chest CT and abdominal fat CT for medical check-up. Maximum bi-dimensional axial diameters of paracardial fats at right (RPF) and left (LPF) cardiophrenic angle portions, and epicardial fats around right (REF) and left (LEF) coronary arteries, and coronary sinus (SEF) were measured. Correlation between pericardial fat diameters and ...
Source: Japanese Journal of Radiology - June 14, 2018 Category: Radiology Source Type: research

High contrast between lumbar nerve roots and surrounding structures using dual echo 3D turbo spin echo additional fusion images
AbstractPurposeWe performed lumbar spinal magnetic resonance imaging of three-dimensional (3D) dual echo volumetric isotropic turbo spin echo acquisition (DE-VISTA) and constructed DE-VISTA additional fusion images (DE-VISTA-AFI), which is the addition of DE-VISTA proton density-weighted images (DE-VISTA-PDWI) to DE-VISTA T2-weighted images (DE-VISTA-T2WI). The aim of this study was to clarify whether DE-VISTA-AFI was able to clearly delineate spinal nerve roots.MethodsA total of 677 patients underwent lumbar MR imaging, and the signal ratio (SR) between cerebrospinal fluid and nerve roots inside the dural sac and the SR b...
Source: Japanese Journal of Radiology - June 12, 2018 Category: Radiology Source Type: research

99m Tc-GSA SPECT/CT fusion imaging for hepatectomy candidates with extremely deteriorated ICG value
This study evaluated99mTc-GSA SPECT/CT fusion imaging for assessing liver function in patients with severely deteriorated ICG values.Materials and methodsThirteen hepatectomy candidates with ICG retention rates over 40% were retrospectively analyzed. The ICG clearance rate (KICG) and estimated KICG obtained by99mTc-GSA scintigraphy (KGSA) were used to evaluate preoperative whole liver function. Remnant liver function was assessed using the remnant (rem) KICG (=  KICG × volumetric rate) and remKGSA (= KGSA × functional rate) indices; hepatectomy was considered unsafe for values
Source: Japanese Journal of Radiology - June 12, 2018 Category: Radiology Source Type: research

Differentiating malignant from benign hyperintense nodules on unenhanced T1-weighted images in patients with chronic liver disease: using gadoxetic acid-enhanced and diffusion-weighted MR imaging
AbstractPurposeTo evaluate value of gadoxetic acid-enhanced and diffusion-weighted (DW) MRI for distinguishing malignant from benign hyperintense nodules on unenhanced T1-weighted images (T1WIs) in patients with chronic liver disease.Materials and methodsForty-two patients with 37 malignant and 41 benign hyperintense nodules on unenhanced T1WIs who underwent gadoxetic acid-enhanced and DW MRI, followed by histopathological examination, were included. Qualitative  and quantitative analyses were conducted. Significant findings on univariate and multivariate analyses were identified and their diagnostic performances were...
Source: Japanese Journal of Radiology - June 6, 2018 Category: Radiology Source Type: research

Pleomorphic adenoma of salivary glands: common and uncommon CT and MR imaging features
AbstractPleomorphic adenoma (PA) is the most common salivary gland tumor and is characterized by cytomorphological and architectural diversity. On CT and MR images, PAs are shown as well-defined lesions occasionally accompanied by characteristic lobulated contours. On T2-weighted images, typical PAs show marked hyperintensity, which reflects the abundant myxochondroid stroma, with a hypointense rim indicating the fibrous capsule. However, intratumoral signal intensity varies according to the cellular density, proportion of epithelial and stromal components, and type of stromal components. In addition, a variety of secondar...
Source: Japanese Journal of Radiology - May 29, 2018 Category: Radiology Source Type: research

The feasibility of high-pitch acquisition protocol for imaging of the pediatric abdomen by dual-source CT
AbstractPurposeTo investigate feasibility of high-pitch acquisition protocol for imaging of pediatric abdomen.Materials and methodsThe study group consisted of 90 patients scanned with high-pitch acquisition protocol (pitch  = 3) by 64-slice dual-source CT (DSCT) scanner. Fifty-four patients scanned with standard protocol (pitch = 1.5) by 16-slice single-source CT scanner comprised the control group. Anteroposterior and lateral diameters of abdomen, effective diameter, scan time and length, qualitative and quan titative noise levels, volumetric CT dose index (CTDIvol), dose length product (DLP),...
Source: Japanese Journal of Radiology - May 28, 2018 Category: Radiology Source Type: research

Differentiation of benign and malignant ampullary obstruction by multi-row detector CT
This study included 93 patients who underwent abdominal CT, 31 patients with ampullary carcinomas, and 62 patients with benign ampullary obstruction. Two radiologists independently evaluated CT parameters then reached consensus decisions. Statistically significant CT parameters were identified through univariate and multivariate analyses.ResultsIn univariate analysis, the presence of ampullary mass, asymmetric, abrupt narrowing of distal common bile duct (CBD), dilated intrahepatic bile duct (IHD), dilated pancreatic duct (PD), peripancreatic lymphadenopathy, duodenal wall thickening, and delayed enhancement were more freq...
Source: Japanese Journal of Radiology - May 21, 2018 Category: Radiology Source Type: research

Magnetic resonance assessment of fetal lung maturity: comparison between signal intensity and volume measurement
AbstractPurposeWe evaluated the associations between gestational age (GA) and lung-to-liver signal intensity ratio (LLSIR) and fetal lung volume (FLV) using magnetic resonance imaging (MRI). Moreover, we evaluated the reproducibility of these measurements.Materials and methodsLLSIR and FLV were measured using single-shot fast spin-echo MRI in 88 consecutive fetuses. The Spearman test was used to assess the relationships between (1) LLSIR and GA, and (2) FLV and GA in 81 fetuses without lung abnormalities. Intra- and inter-observer reliabilities were assessed using intra-class correlation coefficients (ICCs).ResultsOverall,...
Source: Japanese Journal of Radiology - May 16, 2018 Category: Radiology Source Type: research

Simulation study of dosimetric effect in proton beam therapy using concomitant boost technique for unresectable pancreatic cancers
ConclusionsWe found that irradiated dose is closely related to the distance from the GI tract. Clinically, this protocol is expected to have outstanding effects on local control of tumors compared to conventional PBT. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - May 10, 2018 Category: Radiology Source Type: research

Central venous access port placement by translumbar approach using angio-CT unit in patients with superior vena cava syndrome
ConclusionsCV port placement with translumbar inferior vena cava cannulation using an angio-CT unit for cancer patients with superior vena cava syndrome was safe and effective. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - May 9, 2018 Category: Radiology Source Type: research

Uterine endometrial carcinoma with DNA mismatch repair deficiency: magnetic resonance imaging findings and clinical features
ConclusionEC with MMR deficiency tends to be located lower in the uterus, though most other findings were not significantly different from those of EC without MMR deficiency. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - May 4, 2018 Category: Radiology Source Type: research

Cardiac computed tomography as a viable alternative to echocardiography to detect vegetations and perivalvular complications in patients with infective endocarditis
ConclusionFavorable comparison of CT and echocardiography in detecting vegetations and perivalvular complications in patients diagnosed with IE suggested potential for expansion in the use of CT for evaluating organic lesions in patients suspected or diagnosed with IE. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - April 30, 2018 Category: Radiology Source Type: research

Changes in the ADC of diffusion-weighted MRI with the oscillating gradient spin-echo (OGSE) sequence due to differences in substrate viscosities
ConclusionThe ADC values of alkanes do not depend on diffusion times. Then-alkanes can be useful phantoms for assessing the accuracy of clinical protocols of DWI with the OGSE sequence. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - April 26, 2018 Category: Radiology Source Type: research

Imaging features of benign mass lesions in the nasal cavity and paranasal sinuses according to the 2017 WHO classification
AbstractThe World Health Organization (WHO) 2017 classification of head and neck tumors has been just published and has reorganized tumors of the nasal cavity and paranasal sinuses. In this classification, three new entities (seromucinous hamartoma, NUT carcinoma, and biphenotypic sinonasal sarcoma) were included, while the total number of tumors has been reduced by excluding tumors if they did not occur exclusively or predominantly in this region. Among these entities, benign tumors were classified as sinonasal papillomas, respiratory epithelial lesions, salivary gland tumors, benign soft tissue tumors, or other tumors. I...
Source: Japanese Journal of Radiology - April 25, 2018 Category: Radiology Source Type: research

Diagnostic performance of 18 F-FDG PET/CT and whole-body MRI before and early after treatment of multiple myeloma: a prospective comparative study
ConclusionWB-MRI is more sensitive than18F-FDG PET/CT in the diagnosis of MM before treatment; however,18F-FDG PET/CT is more specific than WB-MRI in detecting residual involvement in treated patients. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - April 18, 2018 Category: Radiology Source Type: research

Evaluation of adaptive radiotherapy (ART) by use of replanning the tumor bed boost with repeated computed tomography (CT) simulation after whole breast irradiation (WBI) for breast cancer patients having clinically evident seroma
AbstractPurposeThe aim of this study is to evaluate adaptive radiotherapy (ART) by use of replanning the tumor bed boost with repeated computed tomography (CT) simulation after whole breast irradiation (WBI) for breast cancer patients having clinically evident seroma.Materials and methodsForty-eight patients with clinically evident seroma at the time of planning CT simulation for WBI were included. Two RT treatment plannings were generated for each patient based on the initial CT simulation and tumor bed boost CT simulation to assess seroma and boost target volume (BTV) changes during WBI. Also, dosimetric impact of ART wa...
Source: Japanese Journal of Radiology - April 5, 2018 Category: Radiology Source Type: research

Classification of uterine artery angiographic images: a predictive factor of failure in uterine artery embolization for postpartum hemorrhage
ConclusionsThe UA classification is an independent predictive factor of the clinical success rate of the primary UAE session for PPH; thus, it is an intuitive and optimal predictor for interventional radiologists to decide whether additional therapy is necessary. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - April 5, 2018 Category: Radiology Source Type: research

Techniques of adrenal venous sampling in patients with inferior vena cava or renal vein anomalies
ConclusionAVS can be successfully performed in patients with anomalies. The key to technical success is understanding the venous anatomy based on pre-procedural CT images and choosing appropriate methods. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - April 3, 2018 Category: Radiology Source Type: research

Automatic spectral imaging protocol selection combined with iterative reconstruction can enhance image quality and decrease radiation and contrast dosage in abdominal CT angiography
ConclusionThe ASIS technique plus 50% ASIR can enhance image quality of the abdominal structures while decreasing the radiation and contrast dosage compared with the conventional scan mode. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - April 3, 2018 Category: Radiology Source Type: research

Analysis of computed tomography density of liver before and after amiodarone administration
ConclusionCT density of liver after amiodarone administration was significantly higher than that before administration. No correlations were identified between cumulative dose of amiodarone and either liver density after administration or density change of liver. Amiodarone usage should be checked when radiologists identify high density of the liver on CT. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - April 2, 2018 Category: Radiology Source Type: research

Correction to: Global and Japanese regional variations in radiologist potential workload for computed tomography and magnetic resonance imaging examinations
AbstractIn Results of Abstract, the first sentence should read as: The radiologist potential workload in Japan was 2.78 –4.17 times higher than those in other countries. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - March 30, 2018 Category: Radiology Source Type: research

Comparison of detectability of breast cancer by abbreviated breast MRI based on diffusion-weighted images and postcontrast MRI
ConclusionsThe detectability of the unenhanced abbreviated protocol based on DWI would be comparable to that of abbreviated postcontrast MRI for breast cancer. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - March 26, 2018 Category: Radiology Source Type: research

Brain-core temperature of patients before and after orthotopic liver transplantation assessed by DWI thermometry
ConclusionsBrain-core temperature was stable in patients undergoing OLT. DWI thermometry may provide a supplementary brain biomarker to confirm that cerebral blood flow and metabolism are stable in patients undergoing OLT. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - March 19, 2018 Category: Radiology Source Type: research

Clinical use of cardiac PET/MRI: current state-of-the-art and potential future applications
AbstractCombined PET/MRI is a novel imaging method integrating the advances of functional and morphological MR imaging with PET applications that include assessment of myocardial viability, perfusion, metabolism of inflammatory tissue and tumors, as well as amyloid deposition imaging. As such, PET/MRI is a promising tool to detect and characterize ischemic and non-ischemic cardiomyopathies. To date, the greatest benefit may be expected for diagnostic evaluation of systemic diseases and cardiac masses that remain unclear in cardiac MRI, as well as for clinical and scientific studies in the setting of ischemic cardiomyopathi...
Source: Japanese Journal of Radiology - March 10, 2018 Category: Radiology Source Type: research

Three-dimensional visualization of internal vertebral venous plexuses relative to dural sac and spinal nerve root of spinal canal stenosis using MRI
ConclusionsUsing 3D MRI without and with gadoteridol, we can evaluate morphological changes in VVP under degenerative spinal conditions. The MR anatomy of VVPs of the spine is important, as it has been implicated in many pathophysiological mechanisms and may also cause pitfalls in MRI. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - March 7, 2018 Category: Radiology Source Type: research

Pathology and images of radiation-induced hepatitis: a review article
AbstractRecent advances in highly conformal radiotherapies greatly extend the indications for radiotherapy of liver tumors. However, because of poor tolerance to hepatic radiation, estimation of the intensity of irradiation of the liver is important, particularly for a cirrhotic liver. Knowledge of radiation-induced hepatitis is important for understanding how to optimize hepatic radiation therapy. Pathological changes of the irradiated liver, which include perivenular fibrosis, sinusoidal obstruction, and damage to Kupffer cells and hepatocytes, can be visualized using clinical imaging techniques. This review article disc...
Source: Japanese Journal of Radiology - March 5, 2018 Category: Radiology Source Type: research

Deep learning with convolutional neural network in radiology
This article illustrates basic technical knowledge regarding deep learning with CNNs along the actual course (collecting data, implementing CNNs, and training and testing phases). Pitfalls regarding this technique and how to manage them are also illustrated. We also described some advanced topics of deep learning, results of recent clinical studies, and the future directions of clinical application of deep learning techniques. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - March 1, 2018 Category: Radiology Source Type: research

Acknowledgment
(Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - March 1, 2018 Category: Radiology Source Type: research

Global and Japanese regional variations in radiologist potential workload for computed tomography and magnetic resonance imaging examinations
ConclusionsJapan had a far greater radiologist potential workload compared with other countries, with a large regional variation among prefectures. Prefectures with more radiologists tended to have a higher extent of radiologists ’ involvement in CT and MRI examinations. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - February 16, 2018 Category: Radiology Source Type: research

Utility of second-generation single-energy metal artifact reduction in helical lung computed tomography for patients with pulmonary arteriovenous malformation after coil embolization
AbstractPurposeThe quality of images acquired using single-energy metal artifact reduction (SEMAR) on helical lung computed tomography (CT) in patients with pulmonary arteriovenous malformation (PAVM) after coil embolization was retrospectively evaluated.Materials and methodsCT images were reconstructed with and without SEMAR. Twenty-seven lesions [20 patients (2 males, 18 females), mean age 61.2  ± 11.0 years; number of embolization coils, 9.8 ± 5.0] on contrast-enhanced CT and 18 lesions of non-enhanced lung CT concurrently performed were evaluated. Regions of interest were position...
Source: Japanese Journal of Radiology - February 10, 2018 Category: Radiology Source Type: research

Correction to: The sternalis muscle: radiologic findings on MDCT
In the original publication of the article, the seventh author name was incorrectly published as Hidehumi Aoyama. The correct author name should read as Hidefumi Aoyama. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - January 30, 2018 Category: Radiology Source Type: research

Remote effects in the ipsilateral thalamus and/or contralateral cerebellar hemisphere using FDG PET in patients with brain tumors
ConclusionReduced FDG uptake in ipsilateral TH and contralateral CE usually occur simultaneously in patients with solitary brain tumors. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - January 25, 2018 Category: Radiology Source Type: research

Does biopsy needle traversing through central portion of lesion increase the risk of hemoptysis during percutaneous transthoracic needle biopsy?
ConclusionTraversal through the central part of the lesion by the biopsy needle is not a risk factor of PTNB-related hemoptysis, but subsolid lesions and lesion depth  >  1 cm increase the risk of hemoptysis. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - January 19, 2018 Category: Radiology Source Type: research