Cinematic rendering: a new imaging approach for ulcerative colitis
AbstractPurposeCinematic rendering (CR) is a new technique for visualizing volumetric three-dimensional data. The purpose of this study was to investigate the added value of CR to conventional computed tomography (CT) in the diagnosis and evaluation of ulcerative colitis (UC).Materials and methodsWe retrospectively evaluated the CT data of 48 patients (33 men, 15 women; mean age, 44.35  years) with a definitive diagnosis of UC. All patients underwent conventional CT and CR, and had colonoscopy results. Two radiologists independently reviewed the conventional CT images first without and then with CR. Then, the imaging ...
Source: Japanese Journal of Radiology - May 24, 2019 Category: Radiology Source Type: research

Safety margin of radiofrequency ablation for hepatocellular carcinoma: a prospective study using magnetic resonance imaging with superparamagnetic iron oxide
AbstractPurposeIn radiofrequency ablation (RFA) for hepatocellular carcinoma (HCC), it is difficult to assess the ablative margin (AM) precisely by comparing pre- and post-RFA CT images. We prospectively studied the AMs using magnetic resonance imaging (MRI) with pre-administered superparamagnetic iron oxide (SPIO). SPIO is safe for kidney disease patients.Materials and methodsHepatocellular carcinoma patients were treated with RFA within 8  h of SPIO administration. On T2*-weighted MRI performed 4–7 days later, AM was visualized as a hypointense rim. The ablation status was classified as AM(+) if the rim c...
Source: Japanese Journal of Radiology - May 17, 2019 Category: Radiology Source Type: research

Postmortem volume change of the spleen and kidney on early postmortem computed tomography: comparison with antemortem computed tomography
AbstractPurposeTo clarify an early postmortem change, we investigated the volume changes of the spleen and kidney on postmortem CT compared with antemortem CT in the same patients.Materials and methodsWe retrospectively evaluated the volumes of 56 spleens (56 cases) and 50 kidneys (25 cases) using antemortem and postmortem CT, which were performed within 168  min after death. We divided the cases of spleen analysis into a hemorrhagic group (n  =  12) and a non-hemorrhagic group (n  =  44).ResultsThe volumes of the organs before and after death were 101.0  ± 70.9 (cm3, m...
Source: Japanese Journal of Radiology - May 8, 2019 Category: Radiology Source Type: research

Intra-aneurysmal air after flow diversion treatment in intracranial aneurysms: incidence, characteristics and clinical significance
AbstractObjectiveTo describe the rate and characteristics of air bubble retention (ABR) within cerebral aneurysms treated by flow diversion.MethodsProcedural flat detector CT (FDCT) studies were scrutinized for the presence of air bubbles (density  
Source: Japanese Journal of Radiology - May 6, 2019 Category: Radiology Source Type: research

Risk factors for local recurrence of hepatocellular carcinoma after transcatheter arterial chemoembolization with drug-eluting beads (DEB-TACE)
AbstractPurposeTo identify the risk factors for local recurrence in hepatocellular carcinoma (HCC) patients treated with transcatheter arterial chemoembolization (TACE) with drug-eluting beads (DEB-TACE).Materials and methodsIn this retrospective study, 35 patients (27 males, 8 females; median age 73  years) with 116 tumors (median size 14 mm) treated with DEB-TACE from May 2014 to September 2018 were evaluated. Age, sex, etiology, Child–Pugh class, alpha-fetoprotein, des-gamma-carboxyprothrombin, previous conventional TACE, tumor location, tumor size, tumor number, contact with the liver su rface, level of...
Source: Japanese Journal of Radiology - May 4, 2019 Category: Radiology Source Type: research

The usefulness of full-iterative reconstruction algorithm for the visualization of cystic artery on CT angiography
AbstractPurposeTo evaluate the potential of full-iterative reconstruction (IR) for improving image quality of the cystic artery on CT angiography and to assess observer performance.MethodsThirty patients who underwent both liver dynamic CT and conventional angiography were included in this retrospective study. All CT data were reconstructed through filtered back projection (FBP), adaptive iterative dose reduction 3D (AIDR3D), and forward-projected, model-based, iterative reconstruction solution (FIRST), respectively. In objective study, we analyzed mean ΔCT numbers (the difference between the HU peak of the vessel an...
Source: Japanese Journal of Radiology - April 30, 2019 Category: Radiology Source Type: research

Detectability of the choroid plexus of the third ventricle with magnetic resonance ventriculography
ConclusionMRVn visualizes the anterior portion of ChPl3V with significant sensitivity and the posterior portion with lower one. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - April 23, 2019 Category: Radiology Source Type: research

MR enterography: what is next after Crohn ’s disease?
AbstractWithin the gastrointestinal system, the small bowel represents the most difficult site to approach with imaging modalities. During the last decades, magnetic resonance enterography has reached an increasing interest, up to be considered an essential part in the diagnostic framework of Crohn ’s disease patients. Nevertheless, the distention of the intestinal loops provided by the administration of oral contrast medium, the possibility of a dynamic evaluation, and the lack of radiation exposure are huge advantages that can be exploited for the assessment of other clinical conditions af fecting the small bowel. ...
Source: Japanese Journal of Radiology - April 9, 2019 Category: Radiology Source Type: research

CT findings in diagnosis of gastric bare area invasion: potential prognostic factors for proximal gastric carcinoma
AbstractPurposeTo investigate the correlation between the preoperative CT findings in diagnosis of gastric bare area (GBA) invasion and the 3-year-overall survival (OS) of patients with proximal gastric carcinoma (PGC).Methods108 consecutive patients with PGC confirmed by biopsy underwent MDCT scan prior to gastrectomy were enrolled retrospectively from Dec 2009 to Dec 2014. GBA invasion in PGC were evaluated by measuring the direct CT signs including transmural involvement and lymph nodes in the GBA. The indirect signs were also evaluated including the infiltration of the diaphragm, gastrophrenic ligament and perigastric ...
Source: Japanese Journal of Radiology - April 3, 2019 Category: Radiology Source Type: research

Cryoablation of renal cell carcinoma for patients with stage 4 or 5 non-dialysis chronic kidney disease
AbstractPurposeTo evaluate the safety and efficacy of cryoablation for renal cell carcinoma (RCC) in patients with stage 4 or 5 non-dialysis chronic kidney disease (CKD).Materials and methodsThis retrospective multicenter study included patients with maximum tumor diameter ≤ 4 cm, estimated glomerular filtration rate (eGFR)
Source: Japanese Journal of Radiology - April 2, 2019 Category: Radiology Source Type: research

Changes in tissue gadolinium biodistribution measured in an animal model exposed to four chelating agents
ConclusionOur preliminary study shows that excretion to the kidney has a higher propensity in NAC andCoriandrum sativum groups. It may be possible to change the distribution of gadolinium by administrating several agents. NAC may lower Gadodiamide-induced mineralization in rat hippocampus. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - March 30, 2019 Category: Radiology Source Type: research

Change in hepatic hemodynamics assessed by hepatic arterial blood pressure and computed tomography during hepatic angiography with the double balloon technique
ConclusionThis technique can be useful in decreasing HABP and collateral blood flow from the adjacent hepatic segment. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - March 29, 2019 Category: Radiology Source Type: research

Radiation with concomitant superselective intra-arterial cisplatin infusion for maxillary sinus squamous cell carcinoma
ConclusionRADPLAT was effective for MS-SCC, with acceptable toxicity. Total cisplatin dosage is suggested to be important for primary tumor control. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - March 26, 2019 Category: Radiology Source Type: research

Imaging of extracranial head and neck lesions in cancer patients: a symptom-based approach
AbstractBesides intracranial lesions, neurological symptoms are also caused in cancer patients by extracranial lesions in the head and neck. Common symptoms caused by such lesions include visual loss, visual field defect, diplopia, ptosis, sensory abnormalities of the head and neck region, facial nerve palsy, dysphagia, dysarthria, hoarseness, and syncope. Some cancer patients often have multiple cranial nerve involvement, which is associated with several syndromes such as jugular foramen syndrome. The main causes of cranial nerve dysfunction due to extracranial lesions include bone and nodal metastasis, perineural tumor s...
Source: Japanese Journal of Radiology - March 25, 2019 Category: Radiology Source Type: research

The day when computers read between lines
AbstractThere is a growing notion that artificial general intelligence (AGI) will replace some of the work done by trained professionals, including physicians. This idea, however, seems to have logical leap; herein, we discuss three problems that are significant barriers to this. First, the ground truth is difficult to provide in the majority of medical conditions. Second, the electronic medical record (EMR) only covers a portion of the information that is crucial for patient care. This makes the data in the EMR a suboptimum material for creation of AGI. Third, there are decision-making processes that cannot be captured in...
Source: Japanese Journal of Radiology - March 25, 2019 Category: Radiology Source Type: research

Monitoring of fatigue in radiologists during prolonged image interpretation using fNIRS
ConclusionfNIRS using the change of [oxy-Hb] may be useful for monitoring fatigue in radiologists during image interpretation. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - March 19, 2019 Category: Radiology Source Type: research

Distinction between benign and malignant breast masses at breast ultrasound using deep learning method with convolutional neural network
ConclusionDeep learning with CNN shows high diagnostic performance to discriminate between benign and malignant breast masses on ultrasound. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - March 19, 2019 Category: Radiology Source Type: research

Ethanol fixation method for heart and lung imaging in micro-CT
ConclusionsSimple ethanol fixation improves the tissue contrast enhancement in micro-CT. The best results can be obtained with fixation of the soft tissue samples in a series of ascending ethanol concentrations. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - March 14, 2019 Category: Radiology Source Type: research

Imaging findings of mixed connective tissue disease in children and adolescents: a case series
AbstractMixed connective tissue disease (MCTD) is a rare disease in children and adolescents which overlaps features of juvenile idiopathic arthritis, polymyositis/dermatomyositis, systemic lupus erythematosus, and systemic sclerosis. We have provided an image-based approach for evaluation of MCTD in children and adolescents, outlying the most frequent imaging findings. This approach would aid imagers and clinicians to consider the diagnosis of this rare entity and be able to make an accurate list of differential diagnosis for complex rheumatologic diseases such as MCTD, thus facilitating the ultimate goal of early diagnos...
Source: Japanese Journal of Radiology - March 14, 2019 Category: Radiology Source Type: research

Increased signal intensity of low-concentration gadolinium contrast agent by longer repetition time in heavily T 2 -weighted-3D-FLAIR
ConclusionSI increased with longer TR and lower Gd concentration. Thus, longer TR was useful in detecting low-concentration Gd, such as those in the perilymph and CSF at 4  h after IV. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - March 12, 2019 Category: Radiology Source Type: research

CT features of parathyroid carcinomas: comparison with benign parathyroid lesions
ConclusionsCT features of high short-to-long axis ratio, irregular shape, the presence of peritumoral infiltration and calcification, and low contrast enhancement may aid in distinguishing PCs from BPs. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - March 12, 2019 Category: Radiology Source Type: research

T2*-weighted MR imaging findings of giant cell tumors of bone: radiological –pathological correlation
AbstractPurposeTo assess the correlation between T2*-weighted MR imaging and pathological findings of giant cell tumors (GCT) of bone.MethodsOf the 33 patients with histopathologically proven GCT of bone, 12 were examined using 1.5-T MR imaging, including T2*-weighted imaging, and were included in this study. The imaging and pathological findings of GCTs were compared between GCTs with and without hypointensity on T2*-weighted images (T2* hypointensity).ResultsT2* hypointensity was observed in 6 out of 12 (50%) GCTs. Septal formation (83% vs. 17%;p 
Source: Japanese Journal of Radiology - March 11, 2019 Category: Radiology Source Type: research

Airway quantification using adaptive statistical iterative reconstruction-V on wide-detector low-dose CT: a validation study on lung specimen
AbstractPurposeTo evaluate the accuracy of airway quantification of adaptive statistical iterative reconstruction (ASIR)-V on low-dose CT using a human lung specimen.MethodA lung specimen was scanned on Revolution CT with low-dose settings (20  mAs, 40 mAs and 60 mAs/100 kV) and standard-dose setting (100 mAs/120 kV). CT images were reconstructed using lung kernel with eleven ASIR-V levels from 0 to 100% with 10% interval. ASIR-V level from 0 to 100% with 10% interval was reconstructed on lung kernel. Wall area percentage (%WA) and wall thickness (WT) were measured.ResultsRadiation dose of 20 ...
Source: Japanese Journal of Radiology - February 28, 2019 Category: Radiology Source Type: research

Effects of acquisition method and reconstruction algorithm for CT number measurement on standard-dose CT and reduced-dose CT: a QIBA phantom study
AbstractPurposeTo compare the effect of different acquisition and reconstruction methods on the radiation dose and accuracy of CT number measurements, using a 320-detector row CT and a Quantitative Imaging Biomarker Alliance (QIBA) recommended phantom.Materials and methodsAcquisitions were performed on a 320-detector row CT, as 64- and 80-detector row helical and wide detector step-and-shoot (i.e., wide volume) acquisitions with tube currents of 400  mA, 100 mA, 50 mA, 20 mA, and 10 mA. Image was reconstructed with the filtered back projection (FBP), adaptive iterative dose reduction using 3D proce...
Source: Japanese Journal of Radiology - February 25, 2019 Category: Radiology Source Type: research

Liver assessment using Gd-EOB-DTPA-enhanced magnetic resonance imaging in primary biliary cholangitis patients
ConclusionGd-EOB-DTPA-enhanced MRI is feasible for liver function assessment in PBC patients. However, the ability of this modality in differentiating liver cirrhosis of different etiologies requires further investigation. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - February 23, 2019 Category: Radiology Source Type: research

Acknowledgment
(Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - February 22, 2019 Category: Radiology Source Type: research

A heart atlas for breast radiation therapy and the influence of delination education on both intra and interobserver variability
AbstractPurposeWe developed a heart atlas for breast radiation therapy and evaluated the influence of education on intra and inter-observer similarity, and cardiac dose reporting.Materials and methodsThe data of 16 left breast cancer patients were analyzed. Eight observers delineated heart and cardiac subunits [left (LCA) and right (RCA) coronary arteries, left anterior descending artery (LAD), bilateral atrium and ventricles] before the education. A radiologist and radiation oncologist developed the atlas and delineated the gold standard (GS) volumes. Observers repeated the delineation after education. RT plans were made ...
Source: Japanese Journal of Radiology - February 18, 2019 Category: Radiology Source Type: research

Thoracic endovascular aortic repair for the treatment of ruptured acute type B aortic dissection
ConclusionsOur results indicate that TEVAR for r-ATBAD is associated with high mortality and morbidity. More advanced strategies may be required to improve the outcome. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - February 2, 2019 Category: Radiology Source Type: research

Current status of imaging biomarkers predicting the biological nature of hepatocellular carcinoma
AbstractHepatocellular carcinoma (HCC) is heterogeneous in terms of its biological nature. Various factors related to its biological nature, including size, multifocality, macroscopic morphology, grade of differentiation, macro/microvascular invasion, bile duct invasion, intra-tumoral fat and molecular factors, and their value as prognostic imaging biomarkers have been reported. And recently, genome-based molecular HCC classification correlated with clinical outcome has been elucidated. The imaging biomarkers suggesting a less aggressive nature of HCC are smaller size, solitary tumor, smooth margin suggesting small nodular...
Source: Japanese Journal of Radiology - February 2, 2019 Category: Radiology Source Type: research

Initial clinical experience of a prototype ultra-high-resolution CT for assessment of small intracranial arteries
This study was conducted to evaluate the quality of CTA images acquired using a prototype ultra-high-resolution computed tomography (U-HRCT) system compared with those acquired using a conventional computed tomography (C-CT) system.Materials and methodsFrom July through September 2015, 10 adult patients (6 women and 4 men) previously scanned by C-CT were examined using U-HRCT to locate and assess cerebral aneurysms. The bilateral ophthalmic artery (Opth A), anterior choroidal artery (Acho A), and thalamoperforating arteries (TPAs) were visually evaluated in randomly presented CTA images. Images were graded on a 5-point sca...
Source: Japanese Journal of Radiology - January 31, 2019 Category: Radiology Source Type: research

Recent technical development of artificial intelligence for diagnostic medical imaging
AbstractDeep learning has caused a third boom of artificial intelligence and great changes of diagnostic medical imaging systems such as radiology, pathology, retinal imaging, dermatology inspection, and endoscopic diagnosis will be expected in the near future. However, various attempts and new methods of deep learning have been proposed in recent years, and their progress is extremely fast. Therefore, at the initial stage when medical artificial intelligence papers were published, the artificial intelligence technology itself may be old technology or well-known general-purpose common technology. Therefore, the author has ...
Source: Japanese Journal of Radiology - January 31, 2019 Category: Radiology Source Type: research

The utility of transarterial embolization and computed tomography for life-threatening spontaneous retroperitoneal hemorrhage
AbstractPurposeTo assess the safety and efficacy of transarterial embolization (TAE) and to evaluate the utility of contrast-enhanced computed tomography (CE-CT) for life-threatening spontaneous retroperitoneal hemorrhage (SRH).MethodsNineteen patients underwent TAE following CE-CT for life-threatening SRH. CE-CT and angiographic findings, technical successes, and clinical successes were evaluated. The diagnostic performance of CE-CT for the detection of active bleeding arteries was also assessed by two independent readers.ResultsActive extravasation of contrast material was accurately observed in 78.9 ‒84.2% of the pati...
Source: Japanese Journal of Radiology - January 30, 2019 Category: Radiology Source Type: research

Treatment outcomes according to the macroscopic tumor type in locally advanced esophageal squamous cell carcinoma treated by chemoradiotherapy
ConclusionsMacroscopic tumor type 1 was the significant favorable predictive factor for local control. The study results suggested that the macroscopic tumor type was useful in predicting tumor responses. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - January 28, 2019 Category: Radiology Source Type: research

Differences in gross tumor volumes for pancreatic cancer: a comparison of ungated positron emission tomography and contrast-enhanced four-dimensional computed tomography
AbstractPurposeWe assessed differences in gross tumor volumes (GTVs) for pancreatic cancer between respiratory-ungated positron emission tomography (3D-PET) and contrast-enhanced four-dimensional computed tomography (CE-4DCT).Materials and methodsWe evaluated the GTVs in 21 patients. The sum of the GTVs, which was individually delineated by observers 1 and 2 on the CE-4DCT images from all respiratory phases, was used as GTV-4DCT. The GTVs on the 3D-PET images were extracted with three thresholds: 20%, 30%, and 40% of maximum activity concentration (GTV-n%). We selected one of the GTV-n%, which mostly resembled GTV-4DCT in ...
Source: Japanese Journal of Radiology - January 24, 2019 Category: Radiology Source Type: research

Delayed appearance of transient hyperintensity foci on T1-weighted magnetic resonance imaging in acute disseminated encephalomyelitis
ConclusionT1-hyperintensity foci is not a rare finding (60%) and it can be observed after improvement in symptoms in ADEM. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - January 22, 2019 Category: Radiology Source Type: research

Liver fibrosis assessment using 99mTc-GSA SPECT/CT fusion imaging
ConclusionsSUVmean measured by99mTc-GSA SPECT/CT fusion imaging enables highly accurate prediction of severe liver fibrosis. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - January 17, 2019 Category: Radiology Source Type: research

Clinical and CT findings of small bowel obstruction caused by rice cakes in comparison with bezoars
AbstractPurposeRice cakes have not been recognized as a cause of small bowel obstruction (SBO) worldwide. We compared clinical and CT findings of rice cake SBO versus SBO due to bezoars, the most common cause of food-induced SBO.MethodsTwenty-four patients with rice cake SBO (n = 17) or bezoar SBO (n = 7) were retrospectively evaluated for clinical findings and the following multi-detector CT (MDCT) features: identification of the transition zone, presence of intraluminal lesions, degree of obstruction, and length and attenuation of obstructing materials. Categorical variables were compared by F...
Source: Japanese Journal of Radiology - January 16, 2019 Category: Radiology Source Type: research

Imaging findings of complications after thoracic surgery
AbstractMany surgical procedures are used for the treatment of lung, heart, and mediastinal diseases. The techniques can result in postoperative complications. The nature of these complications differs according to the duration of thoracic surgery and the onset of the complication. The complications occurring within 1  month and more than 1 month generally considered as early and late complications, respectively. Chest radiographs and CT scans obtained in patients who have undergone thoracic surgery show normal changes during the surgical procedure and diverse postsurgical complications. Familiarity with the cl i...
Source: Japanese Journal of Radiology - January 12, 2019 Category: Radiology Source Type: research

Radiation dose reduction using two orthogonal topograms associated with automatic tube voltage selection for lung CT scanning as compared with a single anteroposterior topogram
AbstractObjectiveTo evaluate the effectiveness of two orthogonal topograms on radiation dose and image quality (IQ) associated with topogram-based automatic tube voltage selection (ATVS) for lung CT scanning.MethodsThirty-seven patients were enrolled in this study. At baseline, only an anteroposterior topogram was obtained and at follow-up, both anteroposterior and lateral topograms were performed. ATVS was turned on during all scans. Objective and subjective IQ evaluations were performed and compared; tube voltage and radiation dose of each scan were noted and analyzed.ResultsA significant difference was observed regardin...
Source: Japanese Journal of Radiology - January 2, 2019 Category: Radiology Source Type: research

Evaluation of coronary artery variations using dual-source coronary computed tomography angiography in neonates with transposition of the great arteries
ConclusionDual-source coronary CT angiography has a higher diagnostic ability than echocardiography in the assessment of the origins and courses of the coronary arteries in neonates with TGA. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - January 2, 2019 Category: Radiology Source Type: research

Postmortem computed tomographic features in the diagnosis of drowning: a comparison of fresh water and salt water drowning cases
ConclusionsA lower density in the left atrium was observed in FWDCs compared to SWDCs. This finding may be helpful in differentiating between FWDCs and SWDCs. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - January 1, 2019 Category: Radiology Source Type: research

Multidimensional analysis of clinicopathological characteristics of false-negative clinically significant prostate cancers on multiparametric MRI of the prostate in Japanese men
ConclusionTumor detectability of csPC with PI-RADS v2 was limited compared with o-mpMRI criteria in Japanese men. Moreover, false-negative lesions on o-mpMRI criteria were characterized as small in size, low risk and low cellularity. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - January 1, 2019 Category: Radiology Source Type: research

Pleuroparenchymal fibroelastosis-like lesions on chest computed tomography in routine clinical practice
This study included 1284 patients who underwent chest CT in 2011 at a hospital. The incidence of PPFE-like lesions and their correlation with age, body mass index, and concomitant pulmonary findings were assessed. Moreover, predictors of lesion progression were evaluated on follow-up. The ethical review board waived the requirement of informed consent for the retrospective review of patient records.ResultsIn total, 397 (30.9%) of the 1284 patients presented with PPFE-like lesions. The presence of PPFE-like lesions was correlated with older age (mean 72.2 vs. 69.9  years,p = 0.002); lower BMI (mean 21.0 vs. 23.2,p 
Source: Japanese Journal of Radiology - January 1, 2019 Category: Radiology Source Type: research

How will “democratization of artificial intelligence” change the future of radiologists?
AbstractThe"democratization of AI" is progressing, and it is becoming an era when anyone can utilize AI. What kind of radiologists are new generation radiologists suitable for the AI era? The first is maintaining a broad perspective regarding healthcare in its entirety. Next, it is necessary to study the basic knowledge and latest information concerning AI and possess the latest knowledge concerning modalities such as CT/MRI and imaging information systems. Finally, it is important for radiologists to not forget the viewpoint of patient-centered healthcare. It is an urgent task to nurture human resources by reali...
Source: Japanese Journal of Radiology - December 21, 2018 Category: Radiology Source Type: research

A diagnostic strategy for breast calcifications based on a long-term follow-up of 615 lesions
ConclusionsWhen SVAB results in non-malignant, patients may be followed by annual screening, while re-biopsy needs to be performed for the patients with a discordant result of SVAB and with changes in an imaging finding during a follow-up. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - December 19, 2018 Category: Radiology Source Type: research

Computed tomographic colonography with a reduced dose of laxative using a novel barium sulfate contrast agent in Japan
ConclusionCTC with a reduced dose of laxative using a novel BaSO4 contrast agent has a favorable tagging efficacy, patient acceptability, and accuracy. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - December 15, 2018 Category: Radiology Source Type: research

The Third Asian Radiology Summit
(Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - December 12, 2018 Category: Radiology Source Type: research

Potential value of the PixelShine deep learning algorithm for increasing quality of 70 kVp+ASiR-V reconstruction pelvic arterial phase CT images
AbstractObjectiveTo investigate the effect of a deep learning-based denoising algorithm, PixelShine (PS), on the quality of 70 kVp pelvic arterial phase CT images.Materials and methodsA retrospective analysis was performed on arterial phase pelvic CT images from 33 patients (body-mass index ≤ 20 kg/m2) obtained with a GE Revolution CT (70 kVp tube voltage; adaptive statistical iterative reconstruction-Veo-filtered back projection, 50% blending) and designated group A. Group B images were then obtained by applying PS to group A image datasets. Subjective image quality was evaluated by two radiologists with a 5-...
Source: Japanese Journal of Radiology - December 6, 2018 Category: Radiology Source Type: research

Efficacy and prognostic factors of transarterial embolization as initial treatment for spontaneously ruptured hepatocellular carcinoma: a single-center retrospective analysis in 57 patients
ConclusionTAE appeared to be an effective initial treatment for spontaneously ruptured HCC. The results indicated that large tumors, poor Child –Pugh class, and shock on admission were associated with poor prognosis. For these patients, embolization with lipiodol and gelatin sponge particles could achieve better survival than PVA particles used. (Source: Japanese Journal of Radiology)
Source: Japanese Journal of Radiology - December 3, 2018 Category: Radiology Source Type: research

Technical and clinical overview of deep learning in radiology
AbstractDeep learning has been applied to clinical applications in not only radiology, but also all other areas of medicine. This review provides a technical and clinical overview of deep learning in radiology. To gain a more practical understanding of deep learning, deep learning techniques are divided into five categories: classification, object detection, semantic segmentation, image processing, and natural language processing. After a brief overview of technical network evolutions, clinical applications based on deep learning are introduced. The clinical applications are then summarized to reveal the features of deep l...
Source: Japanese Journal of Radiology - December 1, 2018 Category: Radiology Source Type: research