1,437 results match your criteria Abdominal radiology New York[Journal]


"Giant" hydronephrosis.

Abdom Radiol (NY) 2019 Apr 16. Epub 2019 Apr 16.

Department of Radiology, Wake Forest Baptist Medical Center, Wake Forest University School of Medicine, Medical Center Blvd., Winston Salem, NC, 27157, USA.

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http://dx.doi.org/10.1007/s00261-019-01909-4DOI Listing

Mucinous rectal cancer: concepts and imaging challenges.

Abdom Radiol (NY) 2019 Apr 16. Epub 2019 Apr 16.

Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Ave, Box 29, New York, NY, 10065, USA.

Rectal adenocarcinoma with mucinous components is an uncommon type of rectal cancer with two distinct histologic subtypes: mucinous adenocarcinoma and signet-ring cell carcinoma. Mucin can also be identified as pattern of response after neoadjuvant treatment. On imaging modalities, mucin typically demonstrates high signal intensity on T2-weighted images, low attenuation on computed tomography, and may be negative on 18-fluorodeoxyglucose positron emission tomography. Read More

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http://dx.doi.org/10.1007/s00261-019-02019-xDOI Listing

Gastrointestinal stromal tumor risk classification: spectral CT quantitative parameters.

Abdom Radiol (NY) 2019 Apr 12. Epub 2019 Apr 12.

Department of Radiology, Lanzhou University Second Hospital, Lanzhou, 730030, People's Republic of China.

Purpose: To examine the value of spectral CT quantitative parameters in gastrointestinal stromal tumor (GIST) risk classification.

Materials And Methods: This retrospective study was approved by the institutional review board. The requirement for informed consent was signed. Read More

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http://dx.doi.org/10.1007/s00261-019-01973-wDOI Listing

The role of multimodal imaging in guiding resectability and cytoreduction in pancreatic neuroendocrine tumors: focus on PET and MRI.

Abdom Radiol (NY) 2019 Apr 12. Epub 2019 Apr 12.

Department of Radiology, New York Presbyterian Hospital, Columbia University, New York, NY, USA.

Pancreatic neuroendocrine tumors (pNETs) are rare neoplasms that secrete peptides and neuro-amines. pNETs can be sporadic or hereditary, syndromic or non-syndromic with different clinical presentations and prognoses. The role of medical imaging includes locating the tumor, assessing its extent, and evaluating the feasibility of curative surgery or cytoreduction. Read More

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http://dx.doi.org/10.1007/s00261-019-01994-5DOI Listing

Automated segmentation and quantification of aortic calcification at abdominal CT: application of a deep learning-based algorithm to a longitudinal screening cohort.

Abdom Radiol (NY) 2019 Apr 11. Epub 2019 Apr 11.

E3/311 Clinical Science Center, University of Wisconsin School of Medicine and Public Health, 600 Highland Ave., Madison, WI, 53792-3252, USA.

Objective: To investigate an automated aortic calcium segmentation and scoring tool at abdominal CT in an adult screening cohort.

Methods: Using instance segmentation with convolutional neural networks (Mask R-CNN), a fully automated vascular calcification algorithm was applied to a data set of 9914 non-contrast CT scans from 9032 consecutive asymptomatic adults (mean age, 57.5 ± 7. Read More

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http://dx.doi.org/10.1007/s00261-019-02014-2DOI Listing

"Horseshoe" sign in a female urethral diverticulum.

Abdom Radiol (NY) 2019 Apr 11. Epub 2019 Apr 11.

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

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http://dx.doi.org/10.1007/s00261-019-02015-1DOI Listing

Clinical significance of incidentally discovered renal cysts in pediatric patients.

Abdom Radiol (NY) 2019 Apr 10. Epub 2019 Apr 10.

Department of Radiology, Massachusetts General Hospital and Harvard Medical School, 55 Fruit Street, Boston, MA, 02114, USA.

Purpose: To determine the clinical significance of incidentally discovered renal cysts in pediatric patients and identify imaging predictors of autosomal dominant polycystic kidney disease (ADPKD).

Methods: A retrospective search of radiology reports from 2000 to 2016 was performed to identify patients < 18 years old with an imaging exam identifying at least one renal cyst and a ≥ 1-year follow-up renal imaging exam for cyst evaluation and/or diagnosis of ADPKD. Cysts with clear solid mass components were excluded. Read More

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http://dx.doi.org/10.1007/s00261-019-02017-zDOI Listing
April 2019
1 Read

In comparison with other abdominal imaging modalities, which radiologists interpret abdominal MRI?

Abdom Radiol (NY) 2019 Apr 9. Epub 2019 Apr 9.

Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, GA, 30322, USA.

Purpose: To assess subspecialty mix and case volumes of general and abdominal subspecialty radiologists interpreting abdominal MRI.

Methods: The 2016 CMS Physician/Supplier Procedure Summary Master File was used to obtain billed counts of radiologist-interpreted abdominal fluoroscopy, US, CT, and MRI examinations. The CMS Physician and Other Supplier Public Use File was used to assess the subspecialty mix and case volume of the radiologists interpreting those examinations. Read More

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http://dx.doi.org/10.1007/s00261-019-02009-zDOI Listing

Bare area sign.

Abdom Radiol (NY) 2019 Apr 9. Epub 2019 Apr 9.

VK Clinic, Chromepet, Chennai, Tamilnadu, 600044, India.

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http://dx.doi.org/10.1007/s00261-019-02007-1DOI Listing

Placenta accreta spectrum: value of placental bulge as a sign of myometrial invasion on MR imaging.

Abdom Radiol (NY) 2019 Apr 9. Epub 2019 Apr 9.

Department of Radiology and Biomedical Imaging, University of California San Francisco, 505 Parnassus Ave., Box 0628, San Francisco, CA, 94131, USA.

Purpose: To evaluate correlation of "placental bulge sign" with myometrial invasion in placenta accreta spectrum (PAS) disorders. Placental bulge is defined as deviation of external uterine contour from expected plane caused by abnormal outward bulge of placental tissue.

Materials And Methods: In this IRB-approved, retrospective study, all patients undergoing MRI for PAS disorders between March 2014 and 2018 were included. Read More

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http://link.springer.com/10.1007/s00261-019-02008-0
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http://dx.doi.org/10.1007/s00261-019-02008-0DOI Listing
April 2019
2 Reads

The "inverted Napoleon's hat" sign.

Abdom Radiol (NY) 2019 Apr 9. Epub 2019 Apr 9.

Department of Radiology, Wake Forest Baptist Medical Center, Wake Forest University School of Medicine, Medical Center Blvd., Winston-Salem, NC, 27157, USA.

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http://dx.doi.org/10.1007/s00261-019-02016-0DOI Listing

Percutaneous stenting for malignant hilar biliary obstruction: a randomized controlled trial of unilateral versus bilateral stenting.

Abdom Radiol (NY) 2019 Apr 9. Epub 2019 Apr 9.

Department of Medical Imaging, Xuzhou Central Hospital, 199 South Jiefang Road, Xuzhou, China.

Purpose: To compare the clinical outcomes between unilateral and bilateral metal stenting for patients with malignant hilar biliary obstruction (MHO).

Methods: This is a single-center, open-label, prospective, randomized study. Between January 2016 and March 2018, patients with MHO who were treated by percutaneous unilateral or bilateral metal stenting were enrolled. Read More

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http://dx.doi.org/10.1007/s00261-019-02010-6DOI Listing
April 2019
2 Reads

Ga-PSMA-11 PET/CT in newly diagnosed prostate cancer: diagnostic sensitivity and interobserver agreement.

Abdom Radiol (NY) 2019 Apr 8. Epub 2019 Apr 8.

Department of Pathology, Zagazig University, Zagazig, Egypt.

Purpose: To determine the diagnostic sensitivity and interobserver agreement of Gallium 68-prostate-specific membrane antigen positron emission tomography/computed tomography (Ga-PSMA-11 PET/CT) imaging for diagnosis and staging of patients with newly diagnosed prostate cancer (PC).

Materials And Methods: One hundred and seventy-three men (mean age, 68 ± 7.7 years; range 46-84 years) with newly diagnosed, untreated PC were enrolled in this prospective study between January 2017 and August 2018. Read More

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http://dx.doi.org/10.1007/s00261-019-02006-2DOI Listing

Revisiting quantitative multi-parametric MRI of benign prostatic hyperplasia and its differentiation from transition zone cancer.

Abdom Radiol (NY) 2019 Apr 6. Epub 2019 Apr 6.

Department of Radiology, University of Chicago, 5841 South Maryland Avenue, Chicago, IL, 60637, USA.

Purpose: This study investigates the multiparametric MRI (mpMRI) appearance of different types of benign prostatic hyperplasia (BPH) and whether quantitative mpMRI is effective in differentiating between prostate cancer (PCa) and BPH.

Materials And Methods: Patients (n = 60) with confirmed PCa underwent preoperative 3T MRI. T2-weighted, multi-echo T2-weighted, diffusion weighted and dynamic contrast enhanced images (DCE) were obtained prior to undergoing prostatectomy. Read More

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http://dx.doi.org/10.1007/s00261-019-01936-1DOI Listing

Interobserver agreement of computed tomography reporting standards for chronic pancreatitis.

Abdom Radiol (NY) 2019 Apr 6. Epub 2019 Apr 6.

Diagnostic Radiology Department, Ahmadi Hospital (KOC), Al-Ahmadi, Kuwait.

Aim: To assess the interobserver agreement of computed tomography (CT) reporting standards for chronic pancreatitis (CP).

Subjects And Methods: Retrospective analysis of CT of 47 patients (33 males and 11 females, age range 36 to 56 years) with CP who presented with abdominal pain (n = 41), steatorrhea (n = 37), and glucose intolerance (n = 31). The patients underwent CT study using a 16-multidetector CT scanner with a pancreatic protocol including a nonenhanced scan followed by pancreatic phase at 35 s and portal venous phase at 65 s after intravenous injection of nonionic contrast medium. Read More

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http://dx.doi.org/10.1007/s00261-019-01979-4DOI Listing
April 2019
2 Reads

Hepatic disorders associated with exogenous sex steroids: MR imaging findings.

Abdom Radiol (NY) 2019 Apr 6. Epub 2019 Apr 6.

Monash Imaging, Monash Health, Melbourne, Australia.

Objective: To describe the MRI findings of the effects of exogenous sex steroids on the liver.

Findings: Estrogens, progesterone and synthetic testosterone are exogenous sex steroids that may result in a variety of liver diseases, including tumour formation and vascular disorders. These hormones are mainly administered in the form of the oral contraceptive pill (OCP) and anabolic steroids. Read More

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http://dx.doi.org/10.1007/s00261-019-01941-4DOI Listing
April 2019
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Ischiorectal fossa: benign and malignant neoplasms of this "ignored" radiological anatomical space.

Abdom Radiol (NY) 2019 Apr 6. Epub 2019 Apr 6.

Department of Diagnostic Radiology, The University of Texas M. D. Anderson Cancer Center, Houston, TX, USA.

Purpose: To review the pertinent anatomy and the imaging features of common and uncommon benign and malignant neoplasms and masses of the ischiorectal fossa.

Results: The ischiorectal or ischioanal fossa is the largest space in the anorectal region. The benign neoplasms that develop in the ischiorectal originate from the different components that forms the fossa including vascular tumors such as aggressive angiomyxoma or hemangioma; neural tumors as plexiform neurofibroma or schwannoma; fat tumors as lipoma; skin/skin appendages tumors as hidradenoma papilliferum; smooth or skeletal muscle tumors as solitary fibrous tumor. Read More

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http://dx.doi.org/10.1007/s00261-019-01930-7DOI Listing
April 2019
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A comparison of segmented abdominopelvic fluid volumes with conventional CT signs of abdominal compartment syndrome in a trauma population.

Abdom Radiol (NY) 2019 Apr 5. Epub 2019 Apr 5.

R. Adams Cowley Shock Trauma Center, 22 S. Greene Street, Baltimore, MD, 21201, USA.

Purpose: To compare the utility of abdominopelvic fluid volume measurements with established computed tomography signs for refractory post-traumatic abdominal compartment syndrome.

Methods: This retrospective observational cohort study included 64 consecutive adult trauma patients with preoperative CT and diagnosis of refractory abdominal compartment syndrome requiring decompressive laparotomy at a level I trauma referral center between 2004 and 2014. We hypothesized that abdominal fluid volume measurements would be more predictive of the need for early laparotomy than previously described conventional CT signs of refractory ACS. Read More

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http://link.springer.com/10.1007/s00261-019-02000-8
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http://dx.doi.org/10.1007/s00261-019-02000-8DOI Listing
April 2019
1 Read

Locally recurrent rectal cancer: what the radiologist should know.

Abdom Radiol (NY) 2019 Apr 5. Epub 2019 Apr 5.

Department of Radiology and Imaging Sciences, Emory University School of Medicine, 1364 Clifton Road, NE, Atlanta, GA, 30322, USA.

Despite advances in surgical techniques and chemoradiation therapy, recurrent rectal cancer remains a cause of morbidity and mortality. After successful treatment of rectal cancer, patients are typically enrolled in a surveillance strategy that includes imaging as studies have shown improved prognosis when recurrent rectal cancer is detected during imaging surveillance versus based on development of symptoms. Additionally, patients who experience a complete clinical response with chemoradiation therapy may elect to enroll in a "watch-and-wait" strategy that includes imaging surveillance rather than surgical resection. Read More

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http://dx.doi.org/10.1007/s00261-019-02003-5DOI Listing

Body composition changes after left gastric artery embolization in overweight and obese individuals.

Abdom Radiol (NY) 2019 Apr 4. Epub 2019 Apr 4.

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

Purpose: To determine the effects of left gastric artery embolization (LGAE) on computed tomography (CT) body composition change.

Materials And Methods: Sixteen overweight or obese patients who had abdominal CT scans before and after LGAE for gastric bleeding were retrospectively reviewed. Body composition analysis was performed with semiautomated imaging processing algorithms (MATLAB 13. Read More

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http://link.springer.com/10.1007/s00261-019-02002-6
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http://dx.doi.org/10.1007/s00261-019-02002-6DOI Listing
April 2019
4 Reads

Single institutional experience with initial ultrasound followed by computed tomography or magnetic resonance imaging for acute appendicitis in adults.

Abdom Radiol (NY) 2019 Apr 4. Epub 2019 Apr 4.

Department of Radiology and Biomedical Imaging, University of California San Francisco, 505 Parnassus Avenue, Box 0628, San Francisco, CA, 94131, USA.

Purpose: The objectives of this study was to assess the performance of ultrasound (US) for suspected appendicitis in adult patients and to evaluated the additive value of short-interval (within 1 week) computed tomography (CT) or Magnetic Resonance Imaging (MRI) after performing an initial US.

Methods: In this IRB-approved, HIPAA-compliant, retrospective study, electronic medical records (EMRs) were queried for "US appendicitis" performed over a 2-year interval. EMR was reviewed for CT or MRI performed within 1 week of this exam, and if any new or additional information was available at subsequent exam. Read More

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http://dx.doi.org/10.1007/s00261-019-01998-1DOI Listing
April 2019
3 Reads

Recent use of NSAID and NOAC medications are associated with a positive CT arteriogram.

Abdom Radiol (NY) 2019 Apr 4. Epub 2019 Apr 4.

Section of Gastroenterology and Hepatology, Lewis Katz School of Medicine at Temple University, 3401 North Broad Street, Philadelphia, PA, 19140, USA.

Background: Computed tomography angiography (CTA) is a diagnostic modality utilized in patients with suspected active lower gastrointestinal (GI) bleeding. CTA use in clinical practice is limited by the risk of contrast-induced nephropathy, and the loss of patients from direct physician observation while undergoing the test. Identifying clinical predictors of a positive result would be useful in guiding physician utilization of CTA studies. Read More

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http://dx.doi.org/10.1007/s00261-019-02005-3DOI Listing
April 2019
3 Reads

Value of F-FDG PET/CT in the diagnosis of portal vein tumor thrombus in patients with hepatocellular carcinoma.

Abdom Radiol (NY) 2019 Apr 3. Epub 2019 Apr 3.

Department of Nuclear Medicine, Zhongshan Hospital, Fudan University, No. 180, Fenglin Road, Xuhui District, Shanghai, China.

Objective: The aim of this study was to evaluate the usefulness of F-fluorodeoxyglucose (FDG) positron emission tomography (PET)/computed tomography (CT) for the diagnosis of a portal vein tumor thrombus (PVTT) in patients with hepatocellular carcinoma (HCC).

Methods: One hundred fifty-four patients with histologically proven HCC underwent F-FDG PET/CT imaging. The maximum standardized uptake value (SUVmax) was calculated, and the change in SUVmax (retention index, RI) was defined as the ratio of the increase in SUVmax between early and delayed scans to the SUVmax in the early scan. Read More

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http://dx.doi.org/10.1007/s00261-019-01997-2DOI Listing

Association between chronic asymptomatic pancreatic hyperenzymemia and pancreatic ductal anomalies: a magnetic resonance cholangiopancreatography study.

Abdom Radiol (NY) 2019 Apr 3. Epub 2019 Apr 3.

Radiology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.

Purpose: Elucidating the association between pancreatic ductal anomalies and chronic asymptomatic pancreatic hyperenzymemia using magnetic resonance cholangiopancreatography.

Methods: We conducted a single-center, retrospective, case-control study. The healthy community group comprised 554 subjects who participated in a paid, whole-body health checkup program. Read More

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http://dx.doi.org/10.1007/s00261-019-02004-4DOI Listing
April 2019
3 Reads

"Nodule-in-nodule" architecture of hepatocellular carcinoma.

Abdom Radiol (NY) 2019 Apr 2. Epub 2019 Apr 2.

Section of Radiological Sciences, Bi.N.D., University of Palermo, Via del Vespro 127, 90127, Palermo, Italy.

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http://dx.doi.org/10.1007/s00261-019-02001-7DOI Listing
April 2019
1 Read

Understanding malignant transformation of endometriosis: imaging features with pathologic correlation.

Abdom Radiol (NY) 2019 Apr 2. Epub 2019 Apr 2.

Department of Diagnostic Radiology, Abdominal Division, Mayo Clinic Hospital, 4500 San Pablo Road, Jacksonville, FL, 32224, USA.

Purpose: Transformation of benign endometriosis to endometriosis-associated ovarian carcinoma (EAOC) is rare; however, women with endometriosis are four times more likely to develop EAOC which can present 20 years earlier than de novo ovarian cancer. Presenting symptoms are often vague and the radiologist's role in recognizing EAOC is critical for early detection and treatment. Histopathologic evaluation remains the mainstay for definitive diagnosis. Read More

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http://dx.doi.org/10.1007/s00261-019-01914-7DOI Listing
April 2019
3 Reads

The inferior vena cava: a pictorial review of embryology, anatomy, pathology, and interventions.

Abdom Radiol (NY) 2019 Apr 1. Epub 2019 Apr 1.

Department of Radiology, University of Washington, 1959 NE Pacific St, Box 357115, Seattle, WA, 98195, USA.

The inferior vena cava (IVC) is the largest venous conduit below the diaphragm. Although this structure is often overlooked both clinically and radiographically, it can be involved in many different pathologic processes. A thorough understanding of the IVC will assist the radiologist in recognizing anatomic variants, identifying abnormalities, and providing accurate differential diagnoses. Read More

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http://dx.doi.org/10.1007/s00261-019-01988-3DOI Listing

110 Patients with adenosquamous carcinomas of the pancreas (PASC): imaging differentiation of small (≤ 3 cm) versus large (> 3 cm) tumors.

Abdom Radiol (NY) 2019 Apr 1. Epub 2019 Apr 1.

Department of Radiology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Jiefang Road 88, Hangzhou, 310009, China.

Objective: This study examined radiological imaging features of small (≤ 3 cm) and large (> 3 cm) adenosquamous carcinomas of the pancreas (PASC) lesions to better understand the morphology of these lesions.

Methods: Images from 110 patients with pathologically proven PASC (80 males and 30 females, mean age: 62.6 years) were retrospectively reviewed. Read More

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http://dx.doi.org/10.1007/s00261-019-01989-2DOI Listing

Comparison of CT methods for determining graft steatosis in living donor liver transplantation.

Abdom Radiol (NY) 2019 Apr 1. Epub 2019 Apr 1.

Department of Radiology, Faculty of Medicine, Medipol University, Bağcılar, 34214, Istanbul, Turkey.

Purpose: To evaluate and compare the diagnostic performance of non-enhanced computed tomography (NECT) and contrast-enhanced CT (CECT) attenuation indices in the assessment of hepatic steatosis by using biopsy as the reference standard.

Materials And Methods: This retrospective study was approved by our Institutional Review Board. 55 Potential donors who underwent both NECT and triphasic CECT and core liver biopsy, were included the study. Read More

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http://dx.doi.org/10.1007/s00261-019-01993-6DOI Listing
April 2019
3 Reads

Tension hydrocele as an additional cause of acute scrotum: case series and literature review.

Abdom Radiol (NY) 2019 Mar 30. Epub 2019 Mar 30.

Department of Health Sciences (DISSAL), University of Genoa, Emergency Radiology, Policlinico San Martino Hospital, Largo R. Benzi, 10, 16132, Genoa, Italy.

Purpose: To describe the correlation between acute scrotum pain and tension hydrocele, focusing on US and Doppler features.

Methods And Materials: We evaluated retrospectively a series of five patients with a long history of hydrocele who were referred to our institutions for increasing acute scrotal pain. Patients were approached with gray scale US of both testes, as well as with color-Doppler and spectral analysis, comparing the results with those after aspiration and symptoms relief. Read More

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http://dx.doi.org/10.1007/s00261-019-01991-8DOI Listing
March 2019
2 Reads

Precision and accuracy of magnetic resonance imaging for lobar classification of benign prostatic hyperplasia.

Abdom Radiol (NY) 2019 Mar 30. Epub 2019 Mar 30.

Department of Radiology, University of Minnesota Medical School, Mayo Mail Code 292, 420 Delaware Street S.E., Minneapolis, MN, 55455, USA.

Purpose: To validate the application of a magnetic resonance imaging (MRI)-based lobar classification of benign prostatic hyperplasia (BPH) for use in research and clinical management.

Methods: Two radiologists with 5 and 11 years post-fellowship experience were trained in the lobar classification of BPH using an internally developed atlas of prostate anatomy with example MRI images edited by a third senior radiologist designated as the "administrator" of the study. A study population of 140 patients referred to a tertiary academic medical center with known or suspected prostate cancer was selected by the administrator to test the interrater reliability (IRR; precision) of the classification as well as accuracy of the two readers compared to the administrator as the "gold" standard. Read More

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http://dx.doi.org/10.1007/s00261-019-01970-zDOI Listing

Thimble bladder.

Abdom Radiol (NY) 2019 Mar 29. Epub 2019 Mar 29.

Department of Radiodiagnosis, Sree Balaji Medical College and Hospital, 7 Works Road, Chromepet, Chennai, Tamil Nadu, 600044, India.

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http://dx.doi.org/10.1007/s00261-019-01986-5DOI Listing

Feasibility of using computed tomography texture analysis parameters as imaging biomarkers for predicting risk grade of gastrointestinal stromal tumors: comparison with visual inspection.

Abdom Radiol (NY) 2019 Mar 28. Epub 2019 Mar 28.

Department of Pathology, Korea University Ansan Hospital, Korea University College of Medicine, 123 Jeokgeum-ro, Danwon-gu, Ansan, 15355, Republic of Korea.

Purpose: To evaluate the feasibility of using computed tomography texture analysis (CTTA) parameters for predicting malignant risk grade and mitosis index of gastrointestinal stromal tumors (GISTs), compared with visual inspection.

Method And Materials: CTTA was performed on portal phase CT images of 145 surgically confirmed GISTs (mean size: 42.9 ± 37. Read More

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http://dx.doi.org/10.1007/s00261-019-01995-4DOI Listing

CT-based machine learning model to predict the Fuhrman nuclear grade of clear cell renal cell carcinoma.

Abdom Radiol (NY) 2019 Mar 27. Epub 2019 Mar 27.

Medical Imaging Center, The First Affiliated Hospital of Jinan University, 613 Huangpu Street, Guangzhou, 510630, China.

Purpose: To predict the Fuhrman grade of clear cell renal cell carcinoma (ccRCC) with a machine learning classifier based on single- or three-phase computed tomography (CT) images.

Materials And Methods: Patients with pathologically proven ccRCC from February 1, 2009 to September 31, 2018 who were not treated were retrospectively collected for machine learning-based analysis. The texture features were extracted and ranked from precontrast phase (PCP), corticomedullary phase (CMP), nephrographic phase (NP) and three-phase CT images, and open-source gradient boosting from the decision tree library of CatBoost was used to establish a machine learning classifier to differentiate low- from high-grade ccRCC. Read More

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http://dx.doi.org/10.1007/s00261-019-01992-7DOI Listing
March 2019
1 Read

Comparison of parallel and crossed placement of antennas in microwave ablation of 3-5 cm hepatocellular carcinoma.

Abdom Radiol (NY) 2019 Mar 27. Epub 2019 Mar 27.

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

Purpose: To evaluate the effects of ablation strategies on local tumor progression (LTP) after microwave ablation (MWA) of hepatocellular carcinomas (HCCs) measuring 3-5 cm.

Materials And Methods: Between December 2011 and May 2017, 71 HCC patients with 71 nodules treated by ultrasound(US)-guided percutaneous MWA were divided into parallel (group A) and crossed (group B) antenna placement groups. All patients underwent MWA using two antennas with four insertions. Read More

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http://dx.doi.org/10.1007/s00261-019-01959-8DOI Listing

Imaging features of immune-mediated genitourinary disease.

Abdom Radiol (NY) 2019 Mar 27. Epub 2019 Mar 27.

Department of Radiology, Northwestern Memorial Hospital, 676 N St. Claire St, Suite 800, Chicago, IL, 60611, USA.

Purpose: Imaging features of immune-mediated genitourinary diseases often overlap, and the same disease may manifest in different ways, so understanding imaging findings in the context of the patient's entire clinical picture is important in providing the correct diagnosis.

Methods: In this article, diseases mediated by the immune system which affect the genitourinary system are reviewed. Examples of immune-mediated genitourinary disease including IgG4-related disease, post-transplant lymphoproliferative disorder, immunodeficiency-associated lymphoproliferative disorder due to immunosuppressive and immunomodulatory medications, lymphoma, leukemia, myeloma, amyloidosis, and histiocytosis. Read More

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http://link.springer.com/10.1007/s00261-019-01946-z
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http://dx.doi.org/10.1007/s00261-019-01946-zDOI Listing
March 2019
1 Read

Performance of ultrasound for detection of transjugular intrahepatic portosystemic shunt dysfunction: a meta-analysis.

Abdom Radiol (NY) 2019 Mar 23. Epub 2019 Mar 23.

Department of Family Medicine and Preventive Medicine, Prince of Songkhla University, Songkhla, Thailand.

Purpose: Although ultrasound has been widely used to evaluate transjugular intrahepatic portosystemic shunts (TIPS) patency, several studies have reported conflicting data regarding its performance. Therefore, we aimed to evaluate performance of ultrasound for detection of TIPS dysfunction by performing a meta-analysis.

Methods: Literature search was performed for studies evaluating ultrasound for TIPS dysfunction, stenosis, and occlusion using PubMed, EMBASE, Scopus, and Cochrane Library through February 2019. Read More

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http://dx.doi.org/10.1007/s00261-019-01981-wDOI Listing
March 2019
1 Read

Assessment of liver T1 mapping in fontan patients and its correlation with magnetic resonance elastography-derived liver stiffness.

Abdom Radiol (NY) 2019 Mar 22. Epub 2019 Mar 22.

Pediatric Cardiology, Cincinnati Children's Hospital, 3333 Burnet Avenue, Cincinnati, OH, 45229, USA.

Objectives: To explore the utility of liver T1 mapping in Fontan patients and its correlation to magnetic resonance elastography (MRE)-derived liver stiffness.

Background And Aims: Liver disease is a major long-term extra cardiac complication in the Fontan population. MRE is frequently used to quantify liver stiffness in Fontan patients; however, it has certain limitations. Read More

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http://dx.doi.org/10.1007/s00261-019-01990-9DOI Listing

MRI of cervical cancer with a surgical perspective: staging, prognostic implications and pitfalls.

Abdom Radiol (NY) 2019 Mar 22. Epub 2019 Mar 22.

Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale School of Medicine, New Haven, CT, USA.

Learning Objectives: Magnetic resonance imaging (MRI) of the pelvis is the most reliable imaging modality for staging, treatment planning, and follow-up of cervical cancer; and its findings may now be incorporated into the International Federation of Gynecology and Obstetrics Federation (FIGO) 2018 clinical staging of cervical cancer. It is imperative that radiologists are familiar with the imaging appearance of the different stages of cervical cancer as well as the post-treatment changes and imaging pitfalls given the respective clinical manifestations, treatment regimens, and prognosis of an accurate diagnosis. In addition to the different stages of cervical cancer, we address the imaging techniques for diagnosis, staging and treatment implications as well as the changes of the new FIGO staging system. Read More

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http://dx.doi.org/10.1007/s00261-019-01984-7DOI Listing
March 2019
1 Read

Abdominal manifestations of hereditary hemorrhagic telangiectasia: a series of 333 patients over 15 years.

Abdom Radiol (NY) 2019 Mar 19. Epub 2019 Mar 19.

Department of Radiology, Mayo Clinic, Rochester, MN, USA.

Purpose: Hereditary hemorrhagic telangiectasia (HHT) is an autosomal dominant multi-organ vascular disorder that commonly affects the gastrointestinal tract and the liver resulting in telangiectasias and arteriovenous malformations (AVMs). Previous studies looking at the prevalence of liver and abdominal organ involvement in HHT have been limited by differing imaging techniques and sample size limitations. We sought to define the prevalence of HHT related abdominal vascular abnormalities using optimized multiphasic contrast-enhanced abdominal computed tomography (CT) exams in a large cohort of HHT patients. Read More

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http://link.springer.com/10.1007/s00261-019-01976-7
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http://dx.doi.org/10.1007/s00261-019-01976-7DOI Listing
March 2019
4 Reads

The stalk-of-corn sign of ureter.

Abdom Radiol (NY) 2019 Mar 18. Epub 2019 Mar 18.

Department of Radiology, Yantai Affiliated Hospital of Binzhou Medical Universtiy, No. 717, Jinbu Street, Yantai, Shandong, 264100, China.

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http://dx.doi.org/10.1007/s00261-019-01985-6DOI Listing

Fadeout sign of liver.

Abdom Radiol (NY) 2019 Mar 15. Epub 2019 Mar 15.

VK Clinic, Chromepet, Chennai, Tamilnadu, 600044, India.

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http://dx.doi.org/10.1007/s00261-019-01977-6DOI Listing

Tumors of the jejunum and ileum: a pattern-based imaging approach on CT.

Abdom Radiol (NY) 2019 Mar 14. Epub 2019 Mar 14.

Department of Radiology, Kyung Hee University Hospital at Gangdong, School of Medicine, Kyung Hee University, 149 Sangil-Dong, Gangdong-Gu, Seoul, 134-727, Korea.

Since a broad spectrum of tumors can occur in the small bowels, it is not easy to make a correct differential diagnosis among small bowel tumors on CT findings. Therefore, once a mass is detected on CT, the radiologist needs to analyze the mass based on presenting patterns such as location, multiplicity, morphology, and enhancement patterns. In this article, we will illustrate various kinds of small bowel tumors based on imaging patterns at CT to facilitate making a correct diagnosis. Read More

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http://dx.doi.org/10.1007/s00261-019-01978-5DOI Listing

Diagnostic performance of magnetic resonance cholangiopancreatography (MRCP) versus endoscopic retrograde cholangiopancreatography (ERCP) in the pediatric population: a clinical effectiveness study.

Abdom Radiol (NY) 2019 Mar 14. Epub 2019 Mar 14.

Department of Radiology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, Cincinnati, OH, 45229-3039, USA.

Purpose: To determine the diagnostic performance of magnetic resonance cholangiopancreatography (MRCP) for detecting biliary and pancreatic abnormalities in a pediatric population, using endoscopic retrograde cholangiopancreatography (ERCP) as the reference standard.

Materials And Methods: Institutional review board approval with a waiver of informed consent was obtained for this retrospective investigation. Records from the Cincinnati Children's Hospital Medical Center, Division of Gastroenterology and Department of Radiology were used to identify patients aged ≤ 18 years who had undergone both ERCP and MRCP within a 4-week interval between January 2013 and May 2017. Read More

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http://dx.doi.org/10.1007/s00261-019-01975-8DOI Listing

Transrectal and transvaginal catheter drainages and aspirations for management of pelvic fluid collections: technique, technical success rates, and outcomes in 150 patients.

Abdom Radiol (NY) 2019 Mar 13. Epub 2019 Mar 13.

Department of Radiology, Louisiana State University Health Shreveport, 1501 Kings Highway, Shreveport, LA, 71130, USA.

Purpose: To evaluate outcomes of image-guided transrectal/transvaginal (TR/TV) drainage for symptomatic pelvic fluid collections (SPFCs).

Materials And Methods: Single-center retrospective study of 150 consecutive patients (36 males, 114 females, average age 41 years) who underwent attempted TR/TV drainages of SPFCs during an 11-year, 5-month period. All patients presented with pain and had SPFCs with rectal or vaginal contact on preceding diagnostic CT. Read More

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http://dx.doi.org/10.1007/s00261-019-01974-9DOI Listing
March 2019
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Liver metastases of neuroendocrine tumors: is it possible to diagnose different histologic subtypes depending on multiphasic CT features?

Abdom Radiol (NY) 2019 Mar 12. Epub 2019 Mar 12.

Department of Radiology, Ankara University School of Medicine, 06100, Ankara, Turkey.

Purpose: To assess and compare the multiphasic computed tomography (CT) features of neuroendocrine tumor (NET) liver metastases and to investigate the possibility to predict the histologic subtype of the primary tumor.

Materials And Methods: Between January 2013 and December 2017 patients with biopsy proven NET with at least one liver metastasis who underwent multiphasic CT were enrolled in this study. All cases were acquired using a standardized multiphasic liver CT protocol, arterial, portal, and hepatic venous phases were obtained. Read More

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http://dx.doi.org/10.1007/s00261-019-01963-yDOI Listing
March 2019
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Diffusion-weighted imaging as a part of PET/MR for small lesion detection in patients with primary abdominal and pelvic cancer, with or without TOF reconstruction technique.

Abdom Radiol (NY) 2019 Mar 12. Epub 2019 Mar 12.

Department of Nuclear Medicine, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China.

Objectives: To investigate the value of diffusion-weighted imaging (DWI) in detection of small lesions (≤ 10 mm) in patients with primary abdominal and pelvic cancer in hybrid PET/MR with or without time-of-flight (TOF) technique.

Materials And Methods: Twenty patients (11 females and 9 males, mean age 67.23 ± 12. Read More

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http://dx.doi.org/10.1007/s00261-019-01980-xDOI Listing
March 2019
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Prediction of efficacy of neoadjuvant chemoradiotherapy for rectal cancer: the value of texture analysis of magnetic resonance images.

Abdom Radiol (NY) 2019 Mar 9. Epub 2019 Mar 9.

Department of Radiology, Zhejiang Provincial People's Hospital, Affiliated People's Hospital of Hangzhou Medical College, NO. 158 Shangtang Road, Hangzhou, Zhejiang, China.

Purpose: To explore the clinical feasibility of predicting the efficacy of neoadjuvant chemoradiotherapy (nCRT) for rectal cancer on the basis of texture analysis (TA) of T2-weighted imaging (T2WI).

Methods: The cohort for this prospective study comprised 136 patients with rectal cancer to be treated with nCRT, all of whom underwent three MR scans (pre-, early, and post-nCRT). Treatment efficacy was assessed on the basis of the outcomes of pathologic complete response (pCR) and non-pCR as determined by postoperative pathological examination. Read More

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http://dx.doi.org/10.1007/s00261-019-01971-yDOI Listing

Magnetic resonance imaging of fibropolycystic liver disease: the spectrum of ductal plate malformations.

Abdom Radiol (NY) 2019 Mar 9. Epub 2019 Mar 9.

Radiology Unit, Department of Diagnostic and Therapeutic Services, IRCCS ISMETT (Mediterranean Institute for Transplantation and Advanced Specialized Therapies), Via Tricomi 5, 90127, Palermo, Italy.

Fibropolycystic liver diseases, also known as ductal plate malformations, are a group of associated congenital disorders resulting from abnormal development of the biliary ductal system. These disorders include congenital hepatic fibrosis, biliary hamartomas, polycystic liver disease, choledochal cysts and Caroli disease. Recently, it has been thought to include biliary atresia in this group of diseases, because ductal plate malformations could be implicated in the pathogenesis of this disease. Read More

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http://dx.doi.org/10.1007/s00261-019-01966-9DOI Listing
March 2019
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The "hot air balloon" sign.

Abdom Radiol (NY) 2019 Mar 8. Epub 2019 Mar 8.

Department of Radiology, Wake Forest Baptist Medical Center, Wake Forest University School of Medicine, Medical Center Blvd., Winston-Salem, NC, 27157, USA.

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http://dx.doi.org/10.1007/s00261-019-01972-xDOI Listing
March 2019
1 Read