Predicting ureteral status below the ureteral calculi in patients undergoing ureteroscopic lithotomy.
Abstract BACKGROUND: During ureteroscopy, severe ureter straightness or contortion may occur before the stone is passed. PURPOSE: To identify clinical factors associated with distal ureteral status below the ureteral calculi in patients before surgery. MATERIAL AND METHODS: From October 2016 to March 2017, 101 patients with ureteral calculi who underwent ureteroscopic lithotripsy were reviewed. Patients who lacked clinical data and underwent preoperative indwelling ureteral stent placement were excluded. Univariate and multivariate analyses were performed to determine the clinical factors associated with...
Source: Acta Radiologica - January 21, 2021 Category: Radiology Authors: Qin C, Yin H, Du Y, Li Q, Liu H, Xu T Tags: Acta Radiol Source Type: research

Assessment of optic nerve vascularity in healthy eyes using superb microvascular imaging: a preliminary study.
CONCLUSION: The results indicate that imaging of vascular structures can be done faster and better with SMI than PDUS examination. The normal VI values may provide important information about the blood supply of the optic nerve, which is of relevance in orbital pathologies and many systemic conditions. PMID: 33475431 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - January 21, 2021 Category: Radiology Authors: Batur A, Alpaslan M, Özkaçmaz S, Sedat Durmaz M Tags: Acta Radiol Source Type: research

Effect of image quality on myocardial extracellular volume quantification using cardiac computed tomography: a phantom study.
CONCLUSION: For stable ECV quantifications, excessive radiation dose reduction may be inappropriate, and it is better to consider the variations in ECV values depending on the slice location. PMID: 33461303 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - January 18, 2021 Category: Radiology Authors: Funama Y, Oda S, Kidoh M, Sakabe D, Nakaura T Tags: Acta Radiol Source Type: research

Variations ignored in routine wrist MRI reports: prevalence of the median nerve anatomical variations and persistent median artery.
CONCLUSION: Nearly one in four patients (24.4%) have MN variations and 14.8% had PMA. Preoperative evaluation of these common anatomical variations with MRI will be protective against postoperative complications of CT surgery. PMID: 33455411 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - January 17, 2021 Category: Radiology Authors: Dag F, Dirim Mete B, Gursoy M, Uluc ME Tags: Acta Radiol Source Type: research

Retrosternal hematoma in sternal fracture for prediction of concomitant injury on chest CT.
Abstract BACKGROUND: Isolated sternal fracture, a benign injury, has been increasing in the pan-scan era, although one-third of patients with sternal fracture still has trouble with concomitant injury. The differentiation of these two entities is important to optimize patient management. PURPOSE: To evaluate correlation between retrosternal hematoma and concomitant injury in patients with sternal fracture and to identify predicting factors for concomitant injury in sternal fracture. MATERIAL AND METHODS: A total of 139 patients (84 men; mean age = 54.9 ± 15.3 years) wit...
Source: Acta Radiologica - January 17, 2021 Category: Radiology Authors: Son YN, Kim JI, Lee HN, Shin SY Tags: Acta Radiol Source Type: research

Standardize routine angiography assessment of leg vasculatures before fibular flap harvest: lessons of congenital and acquired vascular anomalies undetected by color Doppler and physical examinations.
CONCLUSIONS: Routine CTA before every fibular harvest, rather than simple PE and CDU, should be added for screening contraindications and ensuring safety for fibular flap harvest. PMID: 33455413 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - January 17, 2021 Category: Radiology Authors: Ma C, Wang L, Tian Z, Qin X, Zhu D, Qin J, Shen Y Tags: Acta Radiol Source Type: research

Effectiveness of epidural steroid injection in patients with lumbar herniated intervertebral disc under a "wait-and-see" policy.
Effectiveness of epidural steroid injection in patients with lumbar herniated intervertebral disc under a "wait-and-see" policy. Acta Radiol. 2021 Jan 12;:284185120985500 Authors: Kim BR, Lee JW, Lee E, Kang Y, Ahn JM, Kang HS Abstract BACKGROUND: There are no consensus and guidelines on the optimal interval of repeat epidural steroid injections (ESI) for patients with lumbar herniated intervertebral disc (HIVD) who respond to initial ESI. PURPOSE: To evaluate the effectiveness of ESI in patients with HIVD under a "wait-and-see" policy, i.e. as-needed injections not on a prede...
Source: Acta Radiologica - January 12, 2021 Category: Radiology Authors: Kim BR, Lee JW, Lee E, Kang Y, Ahn JM, Kang HS Tags: Acta Radiol Source Type: research

Additional value of deep learning computed tomographic angiography-based fractional flow reserve in detecting coronary stenosis and predicting outcomes.
This study included 73 patients (85 vessels) who were suspected of coronary artery disease (CAD) and received CCTA followed by invasive FFR measurements within 90 days. The diagnostic accuracy, sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and area under the receiver operating characteristics curve (AUC) were compared between CT-FFR and CCTA. Thirty-nine patients who received drug therapy instead of revascularization were followed for up to 31 months. Major adverse cardiac events (MACE), unstable angina, and rehospitalization were evaluated and compared between the study groups...
Source: Acta Radiologica - January 10, 2021 Category: Radiology Authors: Li Y, Qiu H, Hou Z, Zheng J, Li J, Yin Y, Gao R Tags: Acta Radiol Source Type: research

Measuring functional connectivity in patients with strabismus using stationary functional magnetic resonance imaging: a resting-state network study.
Abstract BACKGROUND: Strabismus (STR) is a common eye disease characterized by abnormal eye movements and stereo vision. Neuroimaging studies have revealed that STR patients have impaired functional connectivity (FC) in the visual cortex and sensorimotor cortex. PURPOSE: To investigate alterations in FC and connections within and between subnetworks of the visual network (VN), sensorimotor network (SMN), and default mode network (DMN) in patients with STR. MATERIAL AND METHODS: A total of 32 patients with STR (24 men, 8 women) and 32 age- and sex-matched healthy controls (HCs) (24 men, 8 women) were recr...
Source: Acta Radiologica - January 10, 2021 Category: Radiology Authors: Yu K, Lin Q, Ge QM, Yu CY, Li QY, Pan YC, Shao Y Tags: Acta Radiol Source Type: research

MRI features of responsible contacts in vascular compressive trigeminal neuralgia and prediction modeling.
Abstract BACKGROUND: Multiple neurovascular contacts in patients with vascular compressive trigeminal neuralgia often challenge the diagnosis of responsible contacts. PURPOSE: To analyze the magnetic resonance imaging (MRI) features of responsible contacts and establish a predictive model to accurately pinpoint the responsible contacts. MATERIAL AND METHODS: Sixty-seven patients with unilateral trigeminal neuralgia were enrolled. A total of 153 definite contacts (45 responsible, 108 non-responsible) were analyzed for their MRI characteristics, including neurovascular compression (NVC) grading, distance f...
Source: Acta Radiologica - January 7, 2021 Category: Radiology Authors: Zhao Y, Chen J, Jiang R, Xu X, Lin L, Xue Y, Duan Q Tags: Acta Radiol Source Type: research

Overnight radiology resident discrepancies at a large pediatric hospital: categorization by year of training, program, imaging modality, and report type.
CONCLUSION: Radiology discrepancy rates for residents issuing preliminary reports at a large children's hospital system are similar to those reported for adult procedures. PMID: 33406888 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - January 6, 2021 Category: Radiology Authors: Dinh ML, Yazdani R, Godiyal N, Pfeifer CM Tags: Acta Radiol Source Type: research

Staff dose evaluation by application of radiation protection during endoscopic retrograde cholangiopancreatography (ERCP) procedures performed with a mobile C-arm.
CONCLUSION: The table-suspended shield has a significant shielding effect for the lower extremities of the operator and assisting nurse. For annual dose-area product values>300,000 cGycm2, the protection of the operator should be reinforced with a ceiling-suspended shield to avoid doses to the eye lens and body in excess of regulatory dose restrictions. PMID: 33356358 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - December 26, 2020 Category: Radiology Authors: Österlund A, Drohn W, Hoedlmoser H, Greiter M, Schmid M, Källman HE Tags: Acta Radiol Source Type: research

Full core technology versus notch sampling technology: evaluation of the diagnostic accuracy and the risk of a pneumothorax after transthoracic needle biopsy of suspicious lung lesions.
CONCLUSION: In the setting of full core versus notch sampling percutaneous CT-guided coaxial needle biopsy of the lung, no significant difference in the diagnostic accuracy and the incidence of pneumothoraces could be shown, while both technologies have an excellent diagnostic performance. PMID: 33356359 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - December 26, 2020 Category: Radiology Authors: Schroeder C, Loebelenz LI, Heverhagen JT, Noeldge G, Brönnimann MP, Kim SY Tags: Acta Radiol Source Type: research

A comprehensive analysis of self-corrected publications in the imaging literature.
Abstract BACKGROUND: The characteristics of self-corrected publications have not been fully evaluated. PURPOSE: To evaluate the annual number and characteristics of self-corrected publications in the imaging literature within the last 20 years. MATERIAL AND METHODS: We searched MEDLINE (via PubMed) using the following keyword: ("Published Erratum" [Publication Type] OR "Corrected and Republished Article" [Publication Type]) in the imaging literature to identify all self-corrected publications in which initial versions of articles were published during 1999-2018. Extracted data include...
Source: Acta Radiologica - December 26, 2020 Category: Radiology Authors: Hong JH, Yoon DY, Moon JY, Baek S, Lim KJ, Seo YL, Yun EJ Tags: Acta Radiol Source Type: research

Predictive value of time-variant color-coded multiphase CT angiography (mCTA) regarding clinical outcome of acute ischemic stroke: in comparison with conventional mCTA and CT perfusion.
Abstract BACKGROUND: Color-coded multiphase computed tomography angiography (mCTA) can provide time-variant blood flow information of collateral circulation for acute ischemic stroke (AIS). PURPOSE: To compare the predictive values of color-coded mCTA, conventional mCTA, and CT perfusion (CTP) for the clinical outcomes of patients with AIS. MATERIAL AND METHODS: Consecutive patients with anterior circulation AIS were retrospectively reviewed at our center. Baseline collateral scores of color-coded mCTA and conventional mCTA were assessed by a 6-point scale. The reliabilities between junior and senior obs...
Source: Acta Radiologica - December 23, 2020 Category: Radiology Authors: Lin Y, Kang N, Kang J, Lv S, Wang J Tags: Acta Radiol Source Type: research

Diaphragmatic weakness after transcatheter arterial chemoembolization of the right inferior phrenic artery for treatment of hepatocellular carcinoma: a comparison of outcomes after N-butyl cyanoacrylate versus gelatin sponge embolization.
CONCLUSION: Use of NBCA rather than gelatin sponge particles for TACE of the right IPA resulted in a lower incidence of permanent diaphragmatic weakness. PMID: 33356351 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - December 23, 2020 Category: Radiology Authors: Noh SY, Gwon DI, Park S, Yang WJ, Chu HH, Kim JW Tags: Acta Radiol Source Type: research

Radiation-associated angiosarcoma of the breast: analysis of diagnostic tools in a registry-based population.
CONCLUSION: MRI and CT have comparable sensitivity for detection of RAASB, while MGR and US are unreliable. However, negative findings in MRI or CT must be interpreted with caution. Punch biopsy and incisional biopsy are the preferred biopsy methods. PMID: 33349000 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - December 21, 2020 Category: Radiology Authors: Salminen SH, Sampo MM, Böhling TO, Salo J, Tarkkanen M, Blomqvist CP, Hukkinen K Tags: Acta Radiol Source Type: research

Multidetector computed tomography in diagnosing peritoneal metastases in ovarian carcinoma.
Abstract Multidetector computed tomography (MDCT) of the abdomen is currently the imaging examination of choice for the staging and follow-up of ovarian carcinoma (OC). Peritoneal metastases (PMs) represent the most common pathway for the metastatic spread of OC. MDCT scanners, due to several advantages-including increased volume coverage, reduced scanning time, acquisition of thin slices and creation of multiplanar reformations, and three-dimensional reconstructions-provide useful information regarding the early and accurate detection of PMs. Detailed mapping of peritoneal carcinomatosis is feasible, with improve...
Source: Acta Radiologica - December 17, 2020 Category: Radiology Authors: Tsili AC, Naka C, Argyropoulou MI Tags: Acta Radiol Source Type: research

Predicting the clinically significant subscapularis tendon tear: malposition and tear of the long head of the biceps tendon on shoulder magnetic resonance imaging.
Abstract BACKGROUND: The diagnostic accuracy of magnetic resonance imaging (MRI) is low for detecting a subscapularis tendon tear. PURPOSE: To identify MRI findings that may predict the presence of a clinically significant subscapularis tendon tear requiring surgical repair. MATERIAL AND METHODS: We reviewed shoulder MR images of patients who had undergone arthroscopic rotator cuff repair at our institution between June 2018 and May 2019. Patients were divided into two groups: the study group (n = 51), with an intermediate- to high-grade partial thickness tear of the subscapularis tendon su...
Source: Acta Radiologica - December 16, 2020 Category: Radiology Authors: Kim BR, Lee J, Ahn JM, Kang Y, Lee E, Lee JW, Kang HS Tags: Acta Radiol Source Type: research

Detecting lymph node metastasis of esophageal cancer on dual-energy computed tomography.
Abstract BACKGROUND: Using conventional computed tomography (CT), the accurate diagnosis of lymph node (LN) metastasis of esophageal cancer is difficult. PURPOSE: To examine dual-energy CT parameters to predict LN metastasis preoperatively in patients with esophageal cancer. MATERIAL AND METHODS: Twenty-six consecutive patients who underwent dual-energy CT before an esophageal cancer surgery (19 patients with LN metastases) were analyzed. The included LNs had a short-axis diameter of ≥4 mm and were confirmed to be resected on postoperative CT. Their short-axis diameter, CT value, iodine concentration ...
Source: Acta Radiologica - December 16, 2020 Category: Radiology Authors: Sun X, Niwa T, Ozawa S, Endo J, Hashimoto J Tags: Acta Radiol Source Type: research

Percutaneous stent-in-stent placement with large cell-type stents for malignant hilar biliary obstruction.
CONCLUSION: Percutaneous stent-in-stent placement with large cell-type stents is technically feasible and safe, and can be an effective technique in patients with malignant hilar biliary obstruction. PMID: 33307712 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - December 13, 2020 Category: Radiology Authors: Kim GH, Gwon DI, Ko GY, Kim JH, Kim JW, Chu HH, Yoon HK, Sung KB Tags: Acta Radiol Source Type: research

Association of mammography and ultrasound features with MammaPrint in patients with estrogen receptor-positive, HER2-negative, node-positive invasive breast cancer.
Abstract BACKGROUND: MammaPrint is a 70-gene signature microarray assay that predicts the likelihood of recurrence of breast cancer and chemotherapeutic benefits. PURPOSE: To investigate the association between mammography and ultrasound (US) features and MammaPrint results in patients with estrogen receptor (ER)-positive, HER2-negative, node-positive invasive breast cancer, and to identify the predictive factors for high risk of recurrence. MATERIAL AND METHODS: This retrospective study included 251 patients with ER-positive, HER2-negative, 1-3 node-positive invasive breast cancer. Mammography and US fi...
Source: Acta Radiologica - December 10, 2020 Category: Radiology Authors: Choi WJ, Sim H, Kim HJ, Cha JH, Shin HJ, Chae EY, Kim HH Tags: Acta Radiol Source Type: research

Evaluation of the effect of myelotomy on nerve function in rats with spinal cord injury by diffusion tensor imaging.
Abstract BACKGROUND: Spinal cord injury (SCI) is a severe central nervous system injury that can generally induce different degrees of sensory and motor dysfunction. PURPOSE: To clarify the changes of diffusion tensor imaging (DTI) parameters after spinal cord myelotomy in rats with SCI. MATERIAL AND METHODS: Eighteen Sprague Dawley (SD) rats were randomly divided into the Sham group (n=6), SCI group (n=6), and Mye group (n=6), respectively. The DTI values at 1, 3, 7, and 21 days after modeling were collected by magnetic resonance imaging (MRI). The spinal specimen at the injury site was collected on the...
Source: Acta Radiologica - December 7, 2020 Category: Radiology Authors: Liu Y, Liu C, Qin C, Zhang X, Feng H, Wang Z, Li J Tags: Acta Radiol Source Type: research

Differential diagnosis of fibroma of tendon sheath and giant cell tumor of tendon sheath in the finger using signal intensity on T2 magnetic resonance imaging.
CONCLUSIONS: The SI ratio is useful for differentiating FTS from GCTTS independent of a combination of tumor signal and shape. PMID: 33287550 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - December 7, 2020 Category: Radiology Authors: Emori M, Takashima H, Iba K, Sonoda T, Oda T, Hasegawa T, Yamashita T Tags: Acta Radiol Source Type: research

Dynamic contrast-enhanced magnetic resonance imaging in correlation with tongue cancer stages.
Abstract BACKGROUND: Dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) plays a significant role in tumor stage as it can be used to measure tissue perfusion and permeability of tumors. PURPOSE: To investigate the relationships between both quantitative and semi-quantitative variables obtained from DCE-MRI and tongue cancer stages. MATERIAL AND METHODS: Mean values of Ktrans, enhancement ratio (ER), wash-in slope (slope), and the 95th percentile (95%) values of the distribution for Ktrans, ER, and slope values (Ktrans (95%), ER (95%), and slope (95%), respectively) were calculated for 53 pati...
Source: Acta Radiologica - December 6, 2020 Category: Radiology Authors: Chen CF, Peng SL, Lee CC, Lui CC, Huang HY, Chien CY Tags: Acta Radiol Source Type: research

Distribution of pressure on the breast in mammography using flexible and rigid compression plates: implications on patient handling.
CONCLUSION: The flexible plate redistributes pressure to the central breast, achieving a better compression, particularly in the MLO view, though much applied force is still applied to the juxta thoracic region. PMID: 33280392 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - December 6, 2020 Category: Radiology Authors: Dustler M, Förnvik D, Timberg P, Zackrisson S, Muller S Tags: Acta Radiol Source Type: research

Computed tomography characteristics of multiple myeloma and other osteolytic metastatic bone lesions.
ml;zgül HA Abstract BACKGROUND: Differentiation of multiple myeloma (MM) from osteolytic metastatic (OM) bone lesions may be critical in patients with lytic bone lesions but can be challenging for radiologists. PURPOSE: To determine whether computed tomography (CT) can be used to distinguish between MM and other OM bone lesions. MATERIAL AND METHODS: In this retrospective study, 320 lesions of 207 patients diagnosed with MM or OM, based on biopsy or clinical examination, were evaluated. Eight qualitative features were evaluated by two radiologists blinded to the diagnoses. The chi-square and Fisher ...
Source: Acta Radiologica - December 3, 2020 Category: Radiology Authors: Mutlu U, Balci A, Özsan GH, Özkal S, Şeyhanli A, Özgül HA Tags: Acta Radiol Source Type: research

Multidetector computed tomography diagnosis of small bowel intussusceptions in adults: observations in a 10-year single-center study.
Abstract BACKGROUND: The etiologies of small bowel intussusception (SBI) in adults are varied. PURPOSE: To investigate multidetector computed tomography (MDCT) characteristics in adults with neoplastic and non-neoplastic SBI. MATERIAL AND METHODS: Clinical data and MDCT images diagnosed with SBI in adults from January 2010 to May 2020 were retrospectively reviewed. RESULTS: The study included a total of 71 patients. Forty-two patients had a combined total of 55 neoplastic intussusceptions, including 29 patients with benign tumors and 13 patients with malignant tumors. Twenty-nine patients had a comb...
Source: Acta Radiologica - December 3, 2020 Category: Radiology Authors: Hu M, Long F, Long W, Jin Z, Yin H, Li C Tags: Acta Radiol Source Type: research

A novel food-based foam as oral contrast agent with negative Hounsfield units for demarcation of small bowel loops on abdominal CT: tolerability and bowel distension in 25 volunteers.
CONCLUSION: A CT true-negative bowel filling agent was formulated, with high acceptance, few side effects, and a potential to mimic T1-weighted MRI images. PMID: 33251810 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - November 28, 2020 Category: Radiology Authors: Leander P, Adnerhill I, Böök O, Casal-Dujat L, Stathis G, Fork T Tags: Acta Radiol Source Type: research

Acute and subacute prostate MRI findings after MRI-guided transurethral ultrasound ablation of prostate cancer.
CONCLUSION: The optimal timing of MRI follow-up seems to be at the earliest at three weeks after treatment, when the post-procedural edema has decreased and the NPV has matured. Diffusion-weighted imaging has little or no added diagnostic value in the subacute setting. PMID: 33251811 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - November 28, 2020 Category: Radiology Authors: Mäkelä P, Anttinen M, Suomi V, Steiner A, Saunavaara J, Sainio T, Horte A, Taimen P, Boström P, Blanco Sequeiros R Tags: Acta Radiol Source Type: research

Diagnostic value of conventional ultrasound and shear wave elastography in detecting transjugular intrahepatic portosystemic shunt dysfunction.
Abstract BACKGROUND: Transjugular intrahepatic portosystemic shunt (TIPS) dysfunction can cause recurrent portal hypertension (PH)-related complications such as ascites and gastroesophageal variceal bleeding. Portography is invasive and costly limits its use as a screening modality. PURPOSE: To assess the clinical value of conventional ultrasound in combination with point shear wave elastography (pSWE) to predict TIPS dysfunction. MATERIAL AND METHODS: A total of 184 patients with cirrhosis scheduled for TIPS implantation were enrolled in this study and evaluated retrospectively. The splenoportal venous ...
Source: Acta Radiologica - November 28, 2020 Category: Radiology Authors: Han H, Yang J, Jin WK, Li X, Zhang F, Zhuge YZ, Wu M, Yang B Tags: Acta Radiol Source Type: research

Predicting 1p/19q codeletion status using diffusion-, susceptibility-, perfusion-weighted, and conventional MRI in IDH-mutant lower-grade gliomas.
Abstract BACKGROUND: Isocitrate dehydrogenase (IDH)-mutant lower-grade gliomas (LGGs) are further classified into two classes: with and without 1p/19q codeletion. IDH-mutant and 1p/19q codeleted LGGs have better prognosis compared with IDH-mutant and 1p/19q non-codeleted LGGs. PURPOSE: To evaluate conventional magnetic resonance imaging (cMRI), diffusion-weighted imaging (DWI), susceptibility-weighted imaging (SWI), and dynamic susceptibility contrast perfusion-weighted imaging (DSC-PWI) for predicting 1p/19q codeletion status of IDH-mutant LGGs. MATERIAL AND METHODS: We retrospectively reviewed cMRI, DW...
Source: Acta Radiologica - November 22, 2020 Category: Radiology Authors: Yang X, Lin Y, Xing Z, She D, Su Y, Cao D Tags: Acta Radiol Source Type: research

CO2-based C-arm computed tomography (CACT) of the pelvic arteries: feasibility and diagnostic performance in comparison to CO2-angiography in patients with peripheral arterial disease.
CONCLUSION: CO2-CACT proved feasible, and has the potential to optimize angiographic work-up of PAD in patients with contraindications for other contrast media. PMID: 33225716 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - November 22, 2020 Category: Radiology Authors: S Becker L, Dewald C, Maschke SK, Werncke T, Meyer BC, Wacker FK, Hinrichs JB Tags: Acta Radiol Source Type: research

Identifying cardiomegaly in chest X-rays: a cross-sectional study of evaluation and comparison between different transfer learning methods.
CONCLUSION: Deep learning using transfer learning methods based on VGG19 network can be used for the automatic detection of cardiomegaly on chest X-ray images. However, further validation and training of each method is required before application to clinical cases. PMID: 33203215 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - November 17, 2020 Category: Radiology Authors: Bougias H, Georgiadou E, Malamateniou C, Stogiannos N Tags: Acta Radiol Source Type: research

Prediction of transarterial chemoembolization refractoriness in patients with hepatocellular carcinoma using imaging features of gadoxetic acid-enhanced magnetic resonance imaging.
CONCLUSION: The prediction model based on gadoxetic acid-enhanced MRI features in addition to the known predictors including tumor size and number can be used to estimate the risk of TACE refractoriness in patients with intermediate-stage HCC. PMID: 33197329 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - November 16, 2020 Category: Radiology Authors: Byun J, Kim SY, Kim JH, Kim MJ, Yoo C, Shim JH, Lee SS Tags: Acta Radiol Source Type: research

Correlation between the subchondral bone marrow lesions and cartilage repair tissue after matrix-associated autologous chondrocyte implantation in the knee: a cross-sectional study.
Abstract BACKGROUND: The contribution of the subchondral bone in the development and progression of osteoarthritis (OA) has long been recognized, but its role in cartilage repair procedures has only recently attracted more attention. PURPOSE: To explore the correlation between the cartilage repair tissue (RT) and the subchondral bone marrow lesions (BMLs) after matrix-associated autologous chondrocyte implantation (MACI) in the knee joint. MATERIAL AND METHODS: A total of 30 patients who underwent MACI in the knee from January 2015 to June 2018 and follow-up magnetic resonance imaging (MRI) scan were rec...
Source: Acta Radiologica - November 12, 2020 Category: Radiology Authors: Lyu J, Zhang Y, Zhu W, Li D, Lin W, Chen K, Xia J Tags: Acta Radiol Source Type: research

Radiologic findings and the molecular expression profile of diffuse midline glioma H3 K27M mutant.
CONCLUSION: Cortical invasion, leptomeningeal tumor spread, lower ADC value and higher rCBV ratio in NE areas of DMG may be related to normal expression of ATRX. PMID: 33175579 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - November 11, 2020 Category: Radiology Authors: Seong M, Kim ST, Noh JH, Kim YK, Kim HJ Tags: Acta Radiol Source Type: research

CT findings after left renal vein division during abdominal aortic surgery.
CONCLUSION: Postoperative contrast-enhanced CT can delineate collateral draining channels and complications following LRVD. However, these findings tend to be either missed or misinterpreted. PMID: 33176430 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - November 11, 2020 Category: Radiology Authors: Lee HN, Hyun D, Park KB, Do YS, Kim DI, Kim HJ, Heo NH Tags: Acta Radiol Source Type: research

Outcomes of transjugular liver biopsies for liver transplant recipients with bicaval and piggyback hepatic vein anastomoses.
CONCLUSION: TLB is safe and effective for liver transplant patients regardless of the type of hepatic vein anastomosis. While failure to catheterize or advance the stiffened biopsy cannula into the hepatic vein is more likely to occur in patients with piggyback anastomoses, this is a rare occurrence. PMID: 33167667 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - November 9, 2020 Category: Radiology Authors: Price A, Schwertner A, Tran D, Kohi M, Pallav Kolli K, Taylor A, Fidelman N Tags: Acta Radiol Source Type: research

Optimal sequences and sequence parameters for GBCA-enhanced MRI of the glymphatic system: a systematic literature review.
CONCLUSION: Long TE 3D-FLAIR is the most promising sequence for detection of low-dose GBCA in the GS. Clinical and/or phantom studies on other MRI parameters are needed for further optimization of gMRI. PMID: 33153270 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - November 5, 2020 Category: Radiology Authors: Mijnders LS, Steup FW, Lindhout M, Kleij PAV, Brink WM, Molen AJV Tags: Acta Radiol Source Type: research

CT reconstruction with thick slices not only underestimates lymph node size but also reduces data reproducibility in colorectal cancer.
Abstract BACKGROUND: Reliable size measurement of lymph node (LN) metastases is important for the evaluation of cancer treatment. However, image analyses without proper settings may result in inappropriate diagnoses and staging. PURPOSE: To investigate whether reconstruction slice thickness in computed tomography (CT) affects measurements of LN size and reproducibility. MATERIAL AND METHODS: We analyzed 48 patients with histological diagnoses of sigmoid colon and rectal cancer who underwent contrast-enhanced CT colonography as part of a surgical treatment preparation. A board-certified radiologist select...
Source: Acta Radiologica - October 29, 2020 Category: Radiology Authors: Onuma Y, Tsuruta C, Okita K, Hamabe A, Ogura K, Takemasa I, Hatakenaka M Tags: Acta Radiol Source Type: research

Reproducibility of volume and asymmetry measurements of hippocampus, amygdala, and entorhinal cortex on traveling volunteers: a multisite MP2RAGE prospective study.
CONCLUSION: This study suggests that a well-controlled multisite study could provide a reliable MRI dataset. Manual tracing of volume assessments is recommended for low reproducibility structures that require high levels of precision in multisite studies. PMID: 33121264 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - October 29, 2020 Category: Radiology Authors: Du J, Liang P, He H, Tong Q, Gong T, Qian T, Sun Y, Zhong J, Li K Tags: Acta Radiol Source Type: research

Frequency of potential causes of lower back pain and incidental findings in patients with suspected sacroiliitis: retrospective analysis of 886 patients with negative sacroiliac MRI examination for sacroiliitis.
CONCLUSION: In patients with suspected SI but negative MRI examinations for SI, some other possible causes for lower back pain and several incidental findings can be seen on imaging. The presence of these findings may explain the patient's symptoms, and awareness of these conditions may be helpful in patient management and individualizing treatment. PMID: 33121265 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - October 29, 2020 Category: Radiology Authors: Kaya HE, Kerimoğlu Ü Tags: Acta Radiol Source Type: research

Usefulness of a long sheath in ureteral catheterization after failure of antegrade ureteral stent placement using a short sheath.
CONCLUSION: Ureteral catheterization using a long sheath is feasible and effective when antegrade ureteral intervention using a short sheath fails. When using a long sheath, the technical success rate was higher when advancing the balloon catheter over the guidewire than when advancing the guidewire through tight stricture. PMID: 33115243 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - October 29, 2020 Category: Radiology Authors: Chen CS, Kim JW, Shin JH, Li HL, Lee HJ, Ibrahim A, Jang EB Tags: Acta Radiol Source Type: research

A novel measurement to evaluate supraspinatus tendinopathies with strain elastography.
CONCLUSION: This study showed a good association of findings of tendon stiffness with those of tendinopathy on MRI. Using the hard ratio as a novel measurement, its correlation with MRI grade was as reliable as the STR. We also experienced that the benefit of elastography is a challenging issue for defining small ruptures. PMID: 33115244 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - October 29, 2020 Category: Radiology Authors: Özel D, Demir Y, Özel BD, Adaş M Tags: Acta Radiol Source Type: research

Transcatheter arterial embolization for small bowel bleeding: N-butyl cyanoacrylate-lipiodol mixture as the first choice for minimizing ischemic complications.
PMID: 33108892 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - October 27, 2020 Category: Radiology Authors: Loffroy R, Pellegrinelli J, Falvo N, Chevallier O Tags: Acta Radiol Source Type: research

T2 mapping of the acetabular cartilage in infants and children with developmental dysplasia of the hip.
CONCLUSION: MRI T2 mapping may help to diagnose developmental disorders of the acetabular cartilage matrix in infants and children with DDH. Abnormal acetabular cartilage T2 relaxation values may be due to the extraordinary stress load of the femoral head. PMID: 33108893 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - October 27, 2020 Category: Radiology Authors: Lu Z, Pan S, Wang B, Liu J, Gao T, Lyu X Tags: Acta Radiol Source Type: research

Variation in textural parameters of hepatic lesions during contrast medium injection.
r TB Abstract BACKGROUND: Textural parameters extracted using quantitative imaging techniques have been shown to have prognostic value for hepatocellular carcinoma (HCC). PURPOSE: To evaluate whether the contrast medium timing of the image acquisition affects the reproducibility of textural parameters in HCC and hepatic tissue. MATERIAL AND METHODS: This retrospective study included 17 patients with 37 HCC lesions. Perfusion computed tomography (CT) was obtained after 50 mL contrast medium injection. HCC lesions were segmented for analysis. The gray-level co-occurrence (GLCM) textural analysis parameters...
Source: Acta Radiologica - October 27, 2020 Category: Radiology Authors: Zhang YH, Brehmer K, Svensson A, Herlin G, Stål P, Brismar TB Tags: Acta Radiol Source Type: research

The mean bilateral proximal extension of the clot is associated with pulmonary embolism severity parameters and management-associated outcomes.
Abstract BACKGROUND: The value of the proximal extension of the clot in risk stratification of pulmonary embolism (PE) has not been established. The mean bilateral proximal extension of the clot (MBPEC) is a computed tomography (CT) radiological score, where initial evaluation showed promising results considering its ability in predicting the severity of PE. PURPOSE: To explore the possible associations between MBPEC and PE-severity parameters, short- and long-term outcomes of PE, and inter-observer agreement. MATERIAL AND METHODS: Patients diagnosed with PE at Østfold Hospital, Norway during 2003...
Source: Acta Radiologica - October 25, 2020 Category: Radiology Authors: Tavoly M, Gleditsch J, Ghanima JP, Bremtun F, Schintzkewitz M, Thrane KJ, Jervan O, Ghanima W Tags: Acta Radiol Source Type: research

Risk factors for biopsy complications in initial versus subsequent biopsies in native and transplant kidneys.
Abstract BACKGROUND: Few studies exist about risk factors for complications in subsequent biopsies. PURPOSE: To explore risk factors for complications in initial versus subsequent biopsies in native and transplant kidneys, which may predict biopsy complications. MATERIAL AND METHODS: In a multicenter study, 2830 native kidney biopsies (4.3% subsequent) were analyzed for major complications (1251 of these were also analyzed for minor) and 667 transplant kidney biopsies (29% subsequent) were analyzed for major and minor complications. No death or nephrectomy were described. Fisher's exact test, Student's t...
Source: Acta Radiologica - October 23, 2020 Category: Radiology Authors: Peters B, Afghahi H, Maitlo S, Hadimeri H Tags: Acta Radiol Source Type: research