2,016 results match your criteria Abdominal Radiology[Journal]


The caterpillar sign.

Abdom Radiol (NY) 2020 Jun 3. Epub 2020 Jun 3.

Department of Radiology, Mayo Clinic, 4500 San Pablo Rd S, Jacksonville, FL, 32224, USA.

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http://dx.doi.org/10.1007/s00261-020-02611-6DOI Listing

Imaging of hepatocellular carcinoma: a pilot international survey.

Abdom Radiol (NY) 2020 Jun 1. Epub 2020 Jun 1.

Department of Radiology, Liver Imaging Group, University of California San Diego, San Diego, CA, USA.

Purpose: To perform an international survey on current practices in imaging-based surveillance, diagnosis, staging, and assessment of treatment response for HCC.

Materials And Methods: Three themes were covered in this international survey: demographics of respondents and liver imaging expertise; imaging practices for screening, surveillance, diagnosis, staging, and assessment of treatment response for HCC; and diagnostic imaging systems used. Descriptive summaries were created. Read More

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http://dx.doi.org/10.1007/s00261-020-02598-0DOI Listing

Preoperative CT staging of borderline pancreatic cancer patients after neoadjuvant treatment: accuracy in the prediction of vascular invasion and resectability.

Abdom Radiol (NY) 2020 Jun 1. Epub 2020 Jun 1.

Surgical Oncology, South Egypt Cancer Institute, Assiut University, Asyut, Egypt.

Objectives: To assess the utility of MDCT tumor-vascular interface criteria for predicting vascular invasion and resectability in borderline pancreatic cancer (BRPC) patients after neoadjuvant therapy (NAT).

Methods: This prospective study included 90 patients with BRPC who finished NAT, showed no progression in preoperative CTs and underwent surgery. Two radiologists independently assessed preoperative vessel-tumor interface criteria. Read More

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http://dx.doi.org/10.1007/s00261-020-02605-4DOI Listing

Advanced monoenergetic reconstruction technique for dual-energy computed tomography to evaluate endoleaks after endovascular stent-graft placement.

Abdom Radiol (NY) 2020 Jun 2. Epub 2020 Jun 2.

Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, 467-8601, Japan.

Purpose: To evaluate the usefulness of the advanced monoenergetic imaging (AMI) reconstruction technique for dual-energy computed tomography to evaluate endoleaks after endovascular stent-graft placement.

Materials And Methods: Ninety-five dual-phase (early and delayed phases) enhanced CT examinations were performed for 60 patients who underwent endovascular stent-graft placement. AM images were reconstructed at 40 keV and compared with the standard 120-kVp images (SI). Read More

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http://dx.doi.org/10.1007/s00261-020-02602-7DOI Listing

Imaging features of hepatic inflammatory pseudotumor: distinction from colorectal liver metastasis using gadoxetate disodium-enhanced magnetic resonance imaging.

Abdom Radiol (NY) 2020 May 28. Epub 2020 May 28.

Department of Radiology, University of Yamanashi, 1110 Shimokato, Chuo-shi, Yamanashi, 409-3898, Japan.

Purpose: To identify gadoxetate disodium-enhanced MRI features distinguishing hepatic IPT from CLM.

Methods: From February 2008 to December 2019, 162 lesions (IPT, n = 31 and CLM, n = 131) from 94 patients (mean age 65.1 ± 12. Read More

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http://dx.doi.org/10.1007/s00261-020-02575-7DOI Listing

Transarterial chemoembolization of unresectable systemic chemotherapy refractory liver metastases: a retrospective single-center analysis.

Abdom Radiol (NY) 2020 May 28. Epub 2020 May 28.

Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.

Purpose: The purpose of this study was to evaluate the therapeutic efficacy and safety of transarterial chemoembolization (TACE) in the treatment of patients with unresectable colorectal cancer liver metastases (CRCLM) who had failed systemic chemotherapy. In addition, the role of TACE in the treatment of CRCLM is also worth discussing.

Methods: This single-center retrospective study evaluated the consecutive medical records of patients with CRCLM treated with TACE from June 2014 to June 2018, who had failed at least two lines of prior chemotherapy. Read More

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http://dx.doi.org/10.1007/s00261-020-02584-6DOI Listing

3.0 T MRI IVIM-DWI for predicting the efficacy of neoadjuvant chemoradiation for locally advanced rectal cancer.

Abdom Radiol (NY) 2020 May 27. Epub 2020 May 27.

Department of Radiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, 150086, China.

Purpose: The purpose of this study was to determine the diagnostic performance of intravoxel incoherent motion (IVIM) on assessing response to neoadjuvant chemoradiation (nCRT) in patients with Locally Advanced Rectal Cancer (LARC).

Methods: 50 patients with rectal cancer who underwent magnetic resonance (MR) imaging before and after nCRT, the values of pre-nCRT and post-nCRT IVIM-DWI parameters apparent diffusion coefficient (ADC), diffusion coefficient (D), false diffusion coefficient (D*), and perfusion fraction (f), together with the percentage changes (∆% parametric value) induced by nCRT were calculated. According to the patient's response to nCRT, the patients were divided into pathological complete response (pCR) and non-pCR groups, Good Response (GR) group and Poor Response (PR) group, and the above values were compared between different groups. Read More

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http://dx.doi.org/10.1007/s00261-020-02594-4DOI Listing

Association between liver diffusion-weighted imaging apparent diffusion coefficient values and other measures of liver disease in pediatric autoimmune liver disease patients.

Abdom Radiol (NY) 2020 May 27. Epub 2020 May 27.

Center for Autoimmune Liver Disease (CALD), Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.

Background: Multiple quantitative magnetic resonance imaging (MRI) methods have been described to noninvasively detect and characterize liver fibrosis, including diffusion-weighted imaging (DWI).

Purpose: To evaluate associations between liver MRI DWI apparent diffusion coefficient (ADC) values and clinical factors and other quantitative liver MRI metrics in pediatric patients with autoimmune liver disease (AILD).

Materials And Methods: Fifty-seven research liver MRI examinations performed from January 2017 to August 2018 for pediatric AILD registry participants were evaluated. Read More

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http://dx.doi.org/10.1007/s00261-020-02595-3DOI Listing

Differential diagnosis of liver metastases of gastrointestinal stromal tumors from colorectal cancer based on combined tumor biomarker with features of conventional ultrasound and contrast-enhanced ultrasound.

Abdom Radiol (NY) 2020 May 26. Epub 2020 May 26.

Department of Medical Ultrasonics, Institute of Diagnostic and Interventional Ultrasound, The First Affiliated Hospital of Sun Yat-Sen University, NO.58 Zhongshan Road 2, Guangzhou, 510080, People's Republic of China.

Purpose: To explore the value of tumor marker CA125 and CEA linked with conventional ultrasound (US) and contrast-enhanced ultrasound (CEUS) features in differentiating gastrointestinal stromal tumors liver metastases (GISTLM) from colorectal cancer liver metastases (CRCLM).

Materials And Methods: From December 2005 to February 2019, eighty patients with pathologically proven GISTLM together with 80 CRCLM patients were retrospectively evaluated with contrast-enhanced ultrasound (CEUS). Clinical characteristics such as CA125 and CEA were documented to compare the difference between GISTLM and CRCLM. Read More

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http://dx.doi.org/10.1007/s00261-020-02592-6DOI Listing

Assessment of pediatric Crohn's disease activity: validation of the magnetic resonance enterography global score (MEGS) against endoscopic activity score (SES-CD).

Abdom Radiol (NY) 2020 May 26. Epub 2020 May 26.

Department of Pathology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China.

Objective: The aim of this study is to evaluate the ability of magnetic resonance enterography global score (MEGS) to diagnose the activity of pediatric Crohn's disease (CD) and its correlation with endoscopic activity score.

Materials And Methods: 70 pediatric CD patients (between the ages of 6 and 17) were enrolled who underwent ileocolonoscopy and magnetic resonance enterography (MRE) within 7 days. The simplified endoscopic activity score for Crohn's disease (SES-CD) and MEGS were acquired in the terminal ileum. Read More

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http://dx.doi.org/10.1007/s00261-020-02590-8DOI Listing

Possible impact of CT histogram analysis in incidentally discovered adrenal masses.

Abdom Radiol (NY) 2020 May 26. Epub 2020 May 26.

Department of Radiology, University Hospital and Faculty of Medicine and Dentistry, Palacky University, I. P. Pavlova 6, 77900, Olomouc, Czech Republic.

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http://dx.doi.org/10.1007/s00261-020-02596-2DOI Listing

Advances in stent therapy for malignant biliary obstruction.

Abdom Radiol (NY) 2020 May 26. Epub 2020 May 26.

Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, Jiangxi, China.

Malignant biliary obstruction (MBO), result of pancreatobiliary diseases is a challenging condition. Most patients with MBO are inoperable at the time of diagnosis, and the disease is poorly controlled using external-beam radiotherapy and chemotherapy. Biliary stent therapy emerged as a promising strategy for alleviating MBO and prolonging life. Read More

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http://dx.doi.org/10.1007/s00261-020-02593-5DOI Listing

CT and MR imaging of acute adrenal disorders.

Abdom Radiol (NY) 2020 May 26. Epub 2020 May 26.

The Ottawa Hospital, the University of Ottawa, 1053 Carling Avenue, Ottawa, ON, K1Y 4E9, Canada.

The adrenal glands may be overlooked when evaluating acutely ill patients. Acute adrenal disorders may result from complications of an underlying systemic disease, which may be unsuspected clinically. Various acute adrenal emergencies including trauma, spontaneous hemorrhage, infarction and infection can be diagnosed using CT and MRI; however, in uncertain cases follow-up to resolution of imaging findings or histological sampling may be required for diagnosis. Read More

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http://dx.doi.org/10.1007/s00261-020-02580-wDOI Listing

Diagnostic value of retrospectively fused CuCl PET/MRI in biochemical relapse of prostate cancer: comparison with fused F-Choline PET/MRI, CuCl2 PET/CT, F-Choline PET/CT, and mpMRI.

Abdom Radiol (NY) 2020 May 25. Epub 2020 May 25.

Unit of Nuclear Medicine, Department of Diagnostic Imaging, E.O. Galliera Hospital, Genoa, Italy.

Purpose: To assess the diagnostic value of retrospectively fused PET/MRI by comparing the detection rates (DRs) of fused CuCl PET/MRI vs. fused F-Choline PET/MRI in patients with suspected prostatic cancer (PCa) recurrence. The secondary objective was to compare the DRs of fused PET/MRI vs. Read More

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http://dx.doi.org/10.1007/s00261-020-02591-7DOI Listing

Transjugular intrahepatic portosystemic shunt placement: portal vein puncture guided by 3D/2D image registration of contrast-enhanced multi-detector computed tomography and fluoroscopy.

Abdom Radiol (NY) 2020 May 25. Epub 2020 May 25.

Department of Diagnostic and Interventional Radiology, Member of the German Center for Lung Research (DZL), Hannover Medical School, Hannover, Germany.

Background: To assess the technical feasibility, success rate, puncture complications and procedural characteristics of transjugular intrahepatic portosystemic shunt (TIPS) placement using a three-dimensional vascular map (3D-VM) overlay based on image registration of pre-procedural contrast-enhanced (CE) multi-detector computed tomography (MDCT) for portal vein puncture guidance.

Materials And Methods: Overall, 27 consecutive patients (59 ± 9 years, 18male) with portal hypertension undergoing elective TIPS procedure were included. TIPS was guided by CE-MDCT overlay after image registration based on fluoroscopic images. Read More

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http://dx.doi.org/10.1007/s00261-020-02589-1DOI Listing

Abdominal CT manifestations of adverse events to immunotherapy: a primer for radiologists.

Abdom Radiol (NY) 2020 May 25. Epub 2020 May 25.

Division of Abdominal Imaging, Massachusetts General Hospital, Harvard Medical School, 55 Fruit St, White 270, Boston, MA, 02114, USA.

Immunotherapy is a rapidly growing field within oncology and is being increasingly used in the management of several malignancies. Due to their unique mechanism of action on the immune system and neoplastic cells, the response pattern and adverse events of this novel therapy are distinct from conventional systemic therapies. Accordingly, the imaging appearances following immunotherapy including adverse events are unique and at times perplexing. Read More

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http://dx.doi.org/10.1007/s00261-020-02531-5DOI Listing

Esophageal variceal hemorrhage: the role of MDCT characteristics in predicting the presence of varices and bleeding risk.

Abdom Radiol (NY) 2020 May 23. Epub 2020 May 23.

Department of Radiology, School of Medicine, Advanced Diagnostic and Interventional Radiology Research Center (ADIR), Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, Iran.

Purpose: To investigate the associated Multi-Detector Computed Tomography (MDCT) features for esophageal varices (EVs) and esophageal variceal hemorrhage (EVH), with particular emphasis on different collateral veins.

Materials And Methods: All cirrhotic patients who had undergone both Upper Gastrointestinal Tract (UGIT) endoscopy and contrast-enhanced MDCT within 6 months from 2013 to 2019 were included in the study. MDCT of 124 patients, 76 males and 48 females, aged between 21 and 73 years old were evaluated for presence of EV and presence and size of different collaterals. Read More

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http://dx.doi.org/10.1007/s00261-020-02585-5DOI Listing

Magnetic resonance imaging of the prostate after focal therapy with high-intensity focused ultrasound.

Abdom Radiol (NY) 2020 May 23. Epub 2020 May 23.

Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, 10065, USA.

For clinically significant, locally confined prostate cancer, whole-gland radical prostatectomy and radiotherapy are established effective treatment strategies that, however, come at a cost of significant morbidity related to urinary and sexual side effects. The concept of risk stratification paired with a better understanding of prognostic factors has led to the development of alternative management options including active surveillance and focal therapy for appropriately selected patients with localized disease. High-intensity focused ultrasound (HIFU) is one such minimally invasive, image-guided treatment option for prostate cancer. Read More

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http://dx.doi.org/10.1007/s00261-020-02577-5DOI Listing

CT texture analysis for the differentiation of papillary renal cell carcinoma subtypes.

Abdom Radiol (NY) 2020 May 22. Epub 2020 May 22.

Department of Radiology, The Affiliated Hospital of Qingdao University, No. 1677, Wu Tai Shan Road, Huangdao District, Qingdao, Shandong, China.

Purpose: The objective of this study was to investigate whether computed tomography texture analysis can be used to differentiate papillary renal cell carcinoma (PRCC) subtypes.

Method: Sixty-two PRCC tumors were retrospectively evaluated, with 30 type 1 tumors and 32 type 2 tumors. Texture parameters quantified from three-phase contrast-enhanced CT images were compared with least absolute shrinkage and selection operator (LASSO) regression. Read More

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http://dx.doi.org/10.1007/s00261-020-02588-2DOI Listing

The abrupt pancreatic duct cutoff sign on MDCT and MRI.

Abdom Radiol (NY) 2020 May 22. Epub 2020 May 22.

Department of Radiology, Northwestern Memorial Hospital, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA.

Purpose: To evaluate the pancreatic duct cutoff sign in detecting pancreatic adenocarcinoma using CT and MRI.

Methods: A retrospective analysis of patients with a pancreatic duct (PD) cutoff sign on CT or MRI from 2000 to 2019 was performed. The primary outcome measured was the presence or absence of a malignant pancreatic tumor. Read More

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http://dx.doi.org/10.1007/s00261-020-02582-8DOI Listing

Expert radiologist review at a hepatobiliary multidisciplinary tumor board: impact on patient management.

Abdom Radiol (NY) 2020 May 22. Epub 2020 May 22.

Department of Radiology, NYU Langone Health, 660 First Ave, New York, NY, 10016, USA.

Purpose: To identify the frequency, source, and management impact of discrepancies between the initial radiology report and expert reinterpretation occurring in the context of a hepatobiliary multidisciplinary tumor board (MTB).

Methods: This retrospective study included 974 consecutive patients discussed at a weekly MTB at a large tertiary care academic medical center over a 2-year period. A single radiologist with dedicated hepatobiliary imaging expertise attended all conferences to review and discuss the relevant liver imaging and rated the concordance between original and re-reads based on RADPEER scoring criteria. Read More

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http://dx.doi.org/10.1007/s00261-020-02587-3DOI Listing

Diagnostic performance of Liver Imaging Reporting and Data System in patients at risk of both hepatocellular carcinoma and metastasis.

Abdom Radiol (NY) 2020 May 21. Epub 2020 May 21.

Department of Radiology, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea.

Objective: The purpose of this study was to evaluate the diagnostic performance of the Liver Imaging Reporting and Data System (LI-RADS) in patients with both chronic liver disease and a history of extrahepatic malignancy.

Materials And Methods: This retrospective study included 59 hepatocellular carcinomas (HCCs) and 45 metastases pathologically confirmed between 2008 and 2017 in 104 patients with chronic liver disease (cirrhosis or chronic hepatitis B) and a history of extrahepatic malignancy. Two radiologists blinded to the final diagnosis independently reviewed MRI (95 patients) or CT (9 patients) images, and their consensus data were used to calculate the diagnostic performance of LI-RADS categories. Read More

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http://dx.doi.org/10.1007/s00261-020-02581-9DOI Listing

Hepatic enhancement in cirrhosis in the portal venous phase: what are the differences between gadoxetate disodium and gadobenate dimeglumine?

Abdom Radiol (NY) 2020 May 20. Epub 2020 May 20.

Department of Biomedicine, Neuroscience and Advanced Diagnostics (BIND), University Hospital of Palermo, Via del Vespro 129, 90127, Palermo, Italy.

Purpose: To compare the level of parenchymal and portal venous enhancement in the portal venous phase (PVP) in cirrhotic patients undergoing gadoxetate disodium- and gadobenate dimeglumine-enhanced MRI.

Methods: In this retrospective study, 84 cirrhotic patients (mean age ± SD: 66 ± 13 years) who underwent contrast-enhanced MRI with both gadoxetate disodium and gadobenate dimeglumine between 2012 and 2018 were included. Two readers measured signal intensities of hepatic parenchyma, portal vein and psoas muscle on precontrast and PVP. Read More

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http://dx.doi.org/10.1007/s00261-020-02578-4DOI Listing

MR imaging assessment and quantification of liver iron.

Abdom Radiol (NY) 2020 May 20. Epub 2020 May 20.

Radiology Department - Centro Hospitalar Universitário do Porto, Largo Prof Abel Salazar, 4099-001, Porto, Portugal.

Iron overload is a common clinical problem resulting from hereditary hemochromatosis or secondary hemosiderosis (mainly associated with transfusion therapy), being also associated with chronic liver diseases and metabolic disorders. Excess of iron accumulates in organs like the liver, pancreas and heart. Without treatment, patients with iron overload disorders will develop liver cirrhosis, diabetes and cardiomyopathy. Read More

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http://dx.doi.org/10.1007/s00261-020-02574-8DOI Listing

The tobacco flecks.

Abdom Radiol (NY) 2020 May 19. Epub 2020 May 19.

Center for Radiology and Magnetic Resonance Imaging, Clinical Center of Serbia, Pasterova 2, 11000, Belgrade, Serbia.

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http://dx.doi.org/10.1007/s00261-020-02579-3DOI Listing

DTI-based radiomics signature for the detection of early diabetic kidney damage.

Abdom Radiol (NY) 2020 May 19. Epub 2020 May 19.

The First Affiliated Hospital, Jinan University, Guangzhou, 510630, People's Republic of China.

Objective: To explore whether a radiomics signature based on diffusion tensor imaging (DTI) can detect early kidney damage in diabetic patients.

Materials And Methods: Twenty-eight healthy volunteers (group A) and thirty type 2 diabetic patients (group B) with micro-normoalbuminuria, a urinary albumin-to-creatinine ratio (ACR) < 30 mg/g and an estimated glomerular filtration rate (eGFR) of 60-120 mL/(min 1.73 m) were recruited. Read More

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http://dx.doi.org/10.1007/s00261-020-02576-6DOI Listing

Quantification of pancreas fat on dual-energy computed tomography: comparison with six-point Dixon magnetic resonance imaging.

Abdom Radiol (NY) 2020 May 19. Epub 2020 May 19.

Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami Kogushi, Ube, Yamaguchi, 755-8505, Japan.

Objectives: Although it is important to quantify the degree of fatty degeneration of the pancreas, it is difficult to make such a quantification using conventional computed tomography (CT). The present study evaluated the feasibility of pancreatic fat quantification by dual-energy CT (DECT) compared with T2*-corrected six-point Dixon magnetic resonance imaging (MRI).

Materials And Methods: Twenty-eight patients who underwent both DECT (100 and 150 kVp) and Dixon MRI without the use of contrast agents were analyzed. Read More

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http://dx.doi.org/10.1007/s00261-020-02583-7DOI Listing

Assessing CT imaging features combined with CEA and CA125 levels to identify endometriosis-associated ovarian cancer.

Abdom Radiol (NY) 2020 May 18. Epub 2020 May 18.

Department of Radiology, The First people's Hospital of Neijiang, No. 31 Jiaotong Road, Neijiang, China.

Purpose: To improve the diagnosis and identification of ovarian clear cell carcinoma (CCC) and ovarian endometrioid carcinoma (EC), we evaluated CT imaging findings and cut-off values for CEA and CA125.

Methods: The CT features and tumour markers (tumour size, location, morphology, composition, number of cysts, growth pattern of the mural nodules, mural nodule HWR, enhancement of the mural nodules, ascites, complications, CEA level, CA125 level) of 55 tumours in 52 patients with CCC, confirmed by surgery and pathology at the Yunnan Cancer Hospital from January 1, 2012 to December 30, 2018, were compared with those of 41 tumours in 36 patients with EC. All patients had a long history of endometriosis. Read More

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http://dx.doi.org/10.1007/s00261-020-02571-xDOI Listing

The effect of tumor location on long-term results of microwave ablation for early-stage hepatocellular carcinoma.

Abdom Radiol (NY) 2020 May 18. Epub 2020 May 18.

Department of Interventional Ultrasound, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China.

Background: To analyze the influence of tumor location, including tumor adjacency and located segments on long-term survival outcomes for patients with solitary hepatocellular carcinoma (HCC) after microwave ablation (MWA).

Methods: This retrospective study evaluated 850 patients. The hepatic segments where the tumor is located, tumor adjacency (important tissues adjacent to tumor) and other clinical characteristics were collected. Read More

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http://dx.doi.org/10.1007/s00261-020-02472-zDOI Listing

Contrast-enhanced ultrasound imaging of the liver: a review of the clinical evidence for SonoVue and Sonazoid.

Abdom Radiol (NY) 2020 May 18. Epub 2020 May 18.

Department of Radiology, Seoul National University College of Medicine, Seoul, Korea.

Contrast-enhanced ultrasound (CEUS) has become an established modality in various clinical indications for liver diseases. SonoVue, a pure blood pure agent, and Sonazoid, which exhibits an additional Kupffer phase, are contrast agents approved for liver imaging. This review discusses and compares the current clinical evidence for these two ultrasound contrast agents in the characterization and detection of focal liver lesions in the non-cirrhotic and cirrhotic liver, as well as for the use in interventional procedures such as liver biopsy guidance, and local ablation treatment monitoring. Read More

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http://dx.doi.org/10.1007/s00261-020-02573-9DOI Listing

Magnetic resonance imaging features of small-duct primary sclerosing cholangitis.

Abdom Radiol (NY) 2020 May 16. Epub 2020 May 16.

Department of Radiology, Mayo Clinic College of Medicine, Mayo Clinic, 200, First Street SW, Rochester, MN, 55905, USA.

Purpose: To evaluate the biliary tree and hepatic parenchymal findings on magnetic resonance imaging (MRI) and magnetic resonance cholangiopancreatography (MRCP) in small-duct primary sclerosing cholangitis (SD-PSC).

Methods: Thirty-nine patients with biopsy-proven primary sclerosing cholangitis (PSC) without any bile duct abnormality on MRCP (n = 15) or ERCP (n = 24) at the time of diagnosis were identified. Follow-up MRCP was available in 36/39 patients (12/15 Baseline MRCP group and 24 Baseline ERCP group). Read More

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http://dx.doi.org/10.1007/s00261-020-02572-wDOI Listing

Recent updates and developments in PET imaging of prostate cancer.

Abdom Radiol (NY) 2020 May 16. Epub 2020 May 16.

Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA.

A number of positron emission tomography (PET) radiotracers have been developed to improve the sensitivity and specificity of imaging for prostate cancer. These radiotracers include the bone-seeking agent NaF as well as more tumor-specific compounds such as C-choline and F-fluciclovine. In this review, we will discuss the advantages and disadvantages of these PET radiotracers for the imaging of men with prostate cancer across a range of clinical contexts. Read More

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http://dx.doi.org/10.1007/s00261-020-02570-yDOI Listing

Intrahepatic cholangiocarcinoma: pathogenesis, current staging, and radiological findings.

Abdom Radiol (NY) 2020 May 16. Epub 2020 May 16.

Department of Diagnostic Radiology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA.

To this date, it is a major oncological challenge to optimally diagnose, stage, and manage intrahepatic cholangiocarcinoma (ICC). Imaging can not only diagnose and stage ICC, but it can also guide management. Hence, imaging is indispensable in the management of ICC. Read More

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http://dx.doi.org/10.1007/s00261-020-02559-7DOI Listing

Differential diagnosis of hypervascular ultra-small renal cell carcinoma and renal angiomyolipoma with minimal fat in early stage by using thin-section multidetector computed tomography.

Abdom Radiol (NY) 2020 May 16. Epub 2020 May 16.

Department of Radiology, Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), 1 Banshan East Road, Hangzhou, 310022, Zhejiang Province, China.

Purpose: The purpose of this study was to investigate the difference between imaging features of ultra-small renal cell carcinoma (usRCC) and angiomyolipoma with minimal fat (mfAML) whose enhancement were both hypervascular by using multidetector computed tomography (MDCT).

Materials And Methods: Confirmed by pathology, 40 cases of hypervascular usRCC and 21 cases of hypervascular mfAML both with diameter of 2 cm or less were compared and analyzed retrospectively, including traditional imaging features and thin-section computed tomography (CT) dynamic enhanced parameters. Meanwhile, receiver operating characteristic (ROC) curves were constructed to evaluate the diagnostic efficacy of each significant parameter and the information with diagnostic value was selected to construct the prediction model. Read More

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http://dx.doi.org/10.1007/s00261-020-02542-2DOI Listing

Multiparametric magnetic resonance imaging of endometrial polypoid lesions.

Abdom Radiol (NY) 2020 May 12. Epub 2020 May 12.

Department of Radiology, Korea University Guro Hospital, Korea University College of Medicine, 148, Gurodong-ro, Guro-gu, Seoul, 08308, South Korea.

Endometrial polypoid lesions encompass various conditions from physiologic changes to benign or malignant disease. Differentiating between the various causes of endometrial polypoid lesions remains difficult by transvaginal sonography. Magnetic resonance imaging (MRI) can provide valuable information regarding endometrial polypoid lesions in situations where it is difficult to obtain histologic samples. Read More

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http://dx.doi.org/10.1007/s00261-020-02567-7DOI Listing

Impact of PTFE-covered stent position and extension on TIPS patency.

Abdom Radiol (NY) 2020 May 11. Epub 2020 May 11.

Perelman School of Medicine - University of Pennsylvania, 3400 Civic Center Blvd, Philadelphia, PA, 19104, USA.

Purpose: The objectives of this study were to determine the effects of expanded polytetrafluoroethylene (PTFE)-covered stent location and TIPS extension on primary patency.

Methods: This retrospective cohort study examined patients with PTFE-covered TIPS creation between 07/2002 and 06/2016. Clinical information and patency outcomes at 24 months were extracted. Read More

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http://dx.doi.org/10.1007/s00261-020-02566-8DOI Listing

Extraprostatic extension in prostate cancer: primer for radiologists.

Abdom Radiol (NY) 2020 May 10. Epub 2020 May 10.

Department of Radiology, University Hospitals Cleveland Medical Center, Case Western Reserve University, Cleveland, OH, USA.

The presence of extraprostatic extension (EPE) on multiparametric MRI (mpMRI) is an important factor in determining the management of prostate cancer. EPE is an established risk factor for biochemical recurrence of prostate cancer after radical prostatectomy (RP) and patients with EPE may be considered for wider resection margins, non-nerve-sparing surgery, adjuvant radiation therapy (RT), or androgen deprivation therapy (ADT). Several statistical nomograms and scoring systems have been developed to predict pathological stage at time of RP but with varying accuracies. Read More

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http://dx.doi.org/10.1007/s00261-020-02555-xDOI Listing

Roundtable: arguments in support of using multi-parametric prostate MRI protocol.

Abdom Radiol (NY) 2020 May 8. Epub 2020 May 8.

Loma Linda University School of Medicine, Loma Linda, CA, USA.

There is increasing evidence to suggest the value of bi-parametric prostate MRI to replace multi-parametric MRI, which includes the dynamic contrast enhancement (DCE) sequence. In this review, we discuss the value of DCE in select scenarios, specifically in resolving equivocal cases, improving the diagnostic accuracy in the inexperienced reader, rescuing exams in the settings of failed T2W and DWI, detecting biochemical recurrence, while imposing minimal to no risk to the patient with respect to IV gadolinium use, specifically group II agents. Read More

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http://dx.doi.org/10.1007/s00261-020-02543-1DOI Listing

Prevalence and risk factors of perirenal hyperintensities on T2-weighted MR imaging.

Abdom Radiol (NY) 2020 May 7. Epub 2020 May 7.

Department of Radiology, Ludwig Maximilian University Hospital, Pettenkoferstr. 8a, 80336, Munich, Germany.

Objectives: To assess the prevalence and severity of perirenal hyperintensities (PRHs) on T2-weighted magnetic resonance imaging (MRI) and their risk factors in the general population.

Methods: 1752 participants (910 women, 842 men, median age: 52 years) of the Study of Health in Pomerania were included. A visual classification system was established to assess the severity of PRHs (stage 0: no PRHs visible to stage 3: extensive PRHs visible). Read More

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http://dx.doi.org/10.1007/s00261-020-02569-5DOI Listing

Aberrant gastric venous drainage and associated atrophy of hepatic segment II: computed tomography analysis of 2021 patients.

Abdom Radiol (NY) 2020 May 7. Epub 2020 May 7.

Department of Radiology, Seoul National University Hospital, Seoul, Republic of Korea.

Purpose: To investigate the prevalence and patterns of aberrant gastric venous drainage and associated atrophy of the hepatic segment on contrast-enhanced computed tomography (CT).

Methods: Two radiologists retrospectively reviewed contrast-enhanced CT images from 2021 patients who underwent cone-beam CT-guided chemoembolization between January 2013 and December 2018. They determined the presence or absence of an aberrant gastric vein(s) and its drainage site by consensus, and qualitatively analyzed the presence or absence of atrophy of segments II or III. Read More

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http://dx.doi.org/10.1007/s00261-020-02563-xDOI Listing

Gadoxetic acid-enhanced MRI for diagnosis of hepatocellular carcinoma in patients with chronic liver disease: can hypointensity on the late portal venous phase be used as an alternative to washout?

Abdom Radiol (NY) 2020 May 7. Epub 2020 May 7.

Clinical Trial Center, Soonchunhyang University Cheonan Hospital, Cheonan-Si, Chungcheongnam-do, Republic of Korea.

Purpose: To investigate the added value of considering hypointensity on late portal venous phase (LPVP) images as washout for diagnosis of hepatocellular carcinoma (HCC) using gadoxetic acid-enhanced MRI (Gd-EOB-MRI) in patients with chronic liver disease (CLD).

Methods: This retrospective study comprised 97 patients at high risk for HCC who underwent Gd-EOB-MRI including unenhanced, multi-arterial phase, conventional portal venous phase (CPVP, 60 s), and LPVP (mean, 99.9 ± 9. Read More

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http://dx.doi.org/10.1007/s00261-020-02553-zDOI Listing

Image quality in dual-source multiphasic dynamic computed tomography of the abdomen: evaluating the effects of a low tube voltage (70 kVp) in combination with contrast dose reduction.

Abdom Radiol (NY) 2020 May 7. Epub 2020 May 7.

Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan.

Purpose: To compare the image quality of multiphasic (arterial, portal, and equilibrium phases) dynamic computed tomography (CT) of the abdomen obtained by a low tube voltage (70kVp) in combination with a half-dose iodine load using low-concentration contrast agent in high tube output dual-source CT with a standard tube voltage (120kVp) and full-dose iodine load using the same group of adult patients.

Methods: Fifty-five patients who underwent both low-tube-voltage (70kVp) abdominal CT with a half-dose iodine load and standard-tube-voltage (120kVp) CT with a full-dose iodine load were analyzed. The mean CT values and signal-to-noise ratio (SNR) of the liver, aorta and portal veins were quantitatively assessed. Read More

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http://dx.doi.org/10.1007/s00261-020-02565-9DOI Listing

Predictors of transmural intestinal necrosis in patients presenting with acute mesenteric ischemia on computed tomography.

Abdom Radiol (NY) 2020 May 7. Epub 2020 May 7.

Division of Cardiovascular Imaging, Department of Radiology, Massachusetts General Hospital, Boston, MA, USA.

Purpose: The purpose of this study was to identify the significant imaging predictors of transmural intestinal necrosis in patients with acute mesenteric ischemia (AMI).

Methods: The medical records and CT imaging of 48 patients between 2011 and 2019 suspected of having AMI that underwent exploratory laparotomy with bowel resection and pathological confirmation of ischemic bowel injury were retrospectively reviewed. Using histopathology as a gold standard, various parameters related to vascular insufficiency and bowel injury were analyzed and correlated with outcome of ischemic bowel necrosis using nonparametric tests. Read More

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http://dx.doi.org/10.1007/s00261-020-02558-8DOI Listing

LI-RADS M (LR-M) criteria and reporting algorithm of v2018: diagnostic values in the assessment of primary liver cancers on gadoxetic acid-enhanced MRI.

Abdom Radiol (NY) 2020 May 7. Epub 2020 May 7.

Department of Radiology, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Korea.

Purpose: To evaluate diagnostic values of the liver imaging reporting and data system (LI-RADS) M (LR-M) category based on novel explicit criteria that accept both targetoid and nontargetoid LR-M features and the suggested reporting algorithm of LI-RADS v2018 to assess primary liver cancers (PLCs) on gadoxetic acid-enhanced MRI (Gd-EOB-MRI).

Methods: This retrospective study included 165 patients at high risk for hepatocellular carcinoma (HCC) with pathologically confirmed PLCs (HCC, n = 113; intrahepatic cholangiocarcinoma [iCCA], n = 23; and combined hepatocellular cholangiocarcinoma [cHCC-CCA], n = 29). Two radiologists independently analyzed Gd-EOB-MRI features and determined LI-RADS category for each tumor and categorized the likely etiology either as HCC or non-HCC malignancy if LR-M was assigned. Read More

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http://dx.doi.org/10.1007/s00261-020-02545-zDOI Listing

Response to letter to the editor.

Abdom Radiol (NY) 2020 May 7. Epub 2020 May 7.

Department of Radiology, Seoul National University Hospital, Seoul, Korea.

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http://dx.doi.org/10.1007/s00261-020-02568-6DOI Listing

Diagnostic performance of the LR-M criteria and spectrum of LI-RADS imaging features among primary hepatic carcinomas.

Abdom Radiol (NY) 2020 May 6. Epub 2020 May 6.

Department of Radiology and Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.

Purpose: To evaluate the diagnostic performance of LR-M criteria for differentiating hepatocellular carcinoma, intrahepatic mass-forming cholangiocarcinoma, and combined hepatocellular-cholangiocarcinoma and to compare the imaging features of each type.

Methods: In this retrospective study, 110 patients were surgically diagnosed with cholangiocarcinoma (n = 67) and combined hepatocellular-cholangiocarcinoma (n = 43) at a single tertiary hospital between 2013 and 2018. Among them, those with risk factors were enrolled (16 cholangiocarcinomas and 33 combined hepatocellular-cholangiocarcinomas). Read More

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http://dx.doi.org/10.1007/s00261-020-02562-yDOI Listing

Hepatic nodules with arterial phase hyperenhancement and washout on enhanced computed tomography/magnetic resonance imaging: how to avoid pitfalls.

Abdom Radiol (NY) 2020 May 6. Epub 2020 May 6.

Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, 58 Zhong Shan Road 2, Guangzhou, 510080, China.

This essay aimed to illustrate the various hepatic nodules that may exhibit arterial phase hyperenhancement and washout on computed tomography/magnetic resonance imaging (CT/MRI). Hepatic nodules with arterial phase hyperenhancement and washout on CT/MRI include hepatocellular carcinoma, focal nodular hyperplasia-like nodules, serum amyloid A-positive hepatocellular neoplasms, intrahepatic cholangiocarcinoma, intrahepatic bile duct adenoma, hepatoblastoma, hepatocellular adenoma, hepatic epithelioid angiomyolipoma, and metastasis including neuroendocrine and gastrointestinal stromal tumors. Understanding the imaging findings is important to ensure correct diagnosis. Read More

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http://dx.doi.org/10.1007/s00261-020-02560-0DOI Listing

Diagnostic performance of commercially available vs. in-house radiomics software in classification of CT images from patients with pancreatic ductal adenocarcinoma vs. healthy controls.

Abdom Radiol (NY) 2020 May 5. Epub 2020 May 5.

The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, USA.

Purpose: The purpose of this study is to evaluate diagnostic performance of a commercially available radiomics research prototype vs. an in-house radiomics software in the binary classification of CT images from patients with pancreatic ductal adenocarcinoma (PDAC) vs. healthy controls. Read More

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http://dx.doi.org/10.1007/s00261-020-02556-wDOI Listing

Hepatocellular carcinoma in non-cirrhotic versus cirrhotic liver: a clinico-radiological comparative analysis.

Abdom Radiol (NY) 2020 May 5. Epub 2020 May 5.

Department of Radiology, Vardhaman Mahavir Medical College and Safdarjung Hospital, New Delhi, India.

Aim: To compare clinico-radiological pattern of non-cirrhotic versus cirrhotic HCC and correlate them with histopathological tumor grade.

Materials And Methods: This prospective study was carried out on 94 patients enrolled following ultrasound diagnosis of a liver mass measuring > 3 cm. Multiphasic MDCT was performed on all treatment-naïve cases and 56 cases with imaging pattern consistent with unifocal HCC were selected. Read More

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http://dx.doi.org/10.1007/s00261-020-02561-zDOI Listing

Percutaneous transhepatic endoscopic lithotripsy of biliary stones with holmium laser for the treatment of recurrent cholangitis.

Abdom Radiol (NY) 2020 May 4. Epub 2020 May 4.

Department of Diagnostic and Interventional Radiology, Humanitas Clinical and Research Center - IRCCS, Via A. Manzoni 56, 20089, Rozzano, Milan, Italy.

Purpose: To evaluate the efficacy and safety of percutaneous transhepatic endoscopic holmium laser biliary lithotripsy (PTBL) to treat recurrent cholangitis due to intra/extrahepatic stones, in patients not candidate for traditional endoscopic treatment.

Materials And Methods: We retrospectively evaluated 28 patients (M:F = 19:9, mean age = 65 years, SD = 14) undergoing 43 PTBL for stone-related recurrent cholangitis from January 1, 2012 to January 31, 2019 in a single academic center. Data collected included demographics, location and number of stones, clinical success after one (primary) or more than one (secondary) PTBL, procedure time, duration of hospital stay, number of retreatments and post-procedural complications. Read More

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http://dx.doi.org/10.1007/s00261-020-02554-yDOI Listing