Abstract:
:Background Several changes have been made to the revised 2017 international consensus guidelines for management of pancreatic intraductal papillary mucinous neoplasms (IPMNs). However, the diagnostic performance is yet to be verified. Purpose To evaluate the revised guidelines for predicting malignant potential of pancreatic IPMNs and to compare diagnostic performance and intermodality agreement between contrast material-enhanced CT and MRI. Materials and Methods In this retrospective study, two radiologists analyzed the preoperative contrast-enhanced CT and MRI of patients with surgically resected pancreatic IPMNs from January 2007 to December 2017. The diagnostic performance of CT and MRI were analyzed by using receiver operating curve analysis. Intermodality agreement was assessed by using weighted κ and intraclass correlation coefficient values. Results A total of 86 patients (mean age, 67.6 years ± 8.9 [standard deviation]; 47 men and 39 women) with pancreatic IPMNs (benign, 58; malignant, 28) were included. At both CT and MRI, enhancing mural nodule (P < .001), abrupt main pancreatic duct caliber change (P < .001), lymphadenopathy (P = .006), larger main pancreatic duct size (P = .003), and faster cyst growth rate (P = .04) were more common in malignant than benign IPMNs. Irrespective of the modality, enhancing mural nodule of 5 mm or greater had the highest odds ratio (25 at CT vs 29 at MRI). The diagnostic performance of CT (area under the receiver operating characteristic curve, 0.83 [95% confidence interval: 0.75, 0.92]) and MRI (area under the receiver operating characteristic curve, 0.86 [95% confidence interval: 0.77, 0.95]) for predicting malignant IPMNs were comparable (P = .43), with good intermodality agreement (κ = 0.70). Conclusion Among revised features, enhancing mural nodule of 5 mm or greater had the strongest association with malignant intraductal papillary mucinous neoplasm (IPMN), and diagnostic performance for prediction of malignant IPMNs were comparable between contrast-enhanced CT and MRI with good intermodality agreement. © RSNA, 2019 Online supplemental material is available for this article.
journal_name
Radiologyjournal_title
Radiologyauthors
Lee JE,Choi SY,Min JH,Yi BH,Lee MH,Kim SS,Hwang JA,Kim JHdoi
10.1148/radiol.2019190144subject
Has Abstractpub_date
2019-10-01 00:00:00pages
134-143issue
1eissn
0033-8419issn
1527-1315journal_volume
293pub_type
杂志文章相关文献
RADIOLOGY文献大全abstract::A neural network model was constructed to interpret ventilation-perfusion (V/Q) lung scans. This model was trained with data from 100 consecutive V/Q scans with pulmonary angiographic correlation. The network was constructed from 28 input parameters that described various standard V/Q findings, which were fed into a s...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.186.3.8430170
更新日期:1993-03-01 00:00:00
abstract:PURPOSE:To measure the mean diffusional age-related changes of the brain over the full human life span by using diffusion-weighted spin-echo single-shot echo-planar magnetic resonance (MR) imaging and sequential whole-brain apparent diffusion coefficient (ADC) histogram analysis and, secondarily, to build mathematical ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.12112420
更新日期:2013-02-01 00:00:00
abstract:PURPOSE:To retrospectively evaluate the influence of postbiopsy hemorrhage on the accuracy of tumor detection at T2-weighted magnetic resonance (MR) imaging, dynamic contrast material-enhanced MR imaging, and diffusion-weighted (DW) MR imaging of prostate cancer, with histologic findings as the reference standard. MAT...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2482070157
更新日期:2008-08-01 00:00:00
abstract:PURPOSE:To define age-specific patterns of distribution of red and yellow marrow about the shoulder. MATERIALS AND METHODS:Red and yellow marrow distribution was reviewed on magnetic resonance images of 189 subjects aged 15-69 years. Double-echo and fast spin-echo, gradient, and short inversion time inversion recovery...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.192.1.8208940
更新日期:1994-07-01 00:00:00
abstract:PURPOSE:To assess SH U 508A in the diagnosis of suspected renal arterial stenosis by means of ultrasonography (US) and to confirm the safety of SH U 508A in a clinical setting. MATERIALS AND METHODS:A randomized crossover study was performed in 198 patients from 14 European centers who were referred for renal arterial...
journal_title:Radiology
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1148/radiology.214.3.r00fe02739
更新日期:2000-03-01 00:00:00
abstract::It appears reasonable to suggest a histological diagnosis of ependymoma when CT shows an isodense tumor expanding the fourth ventricle or lying within its outlets; when the tumor contains small, round calcifications; and when presentation occurs early in life. An isodense mass occurring in the cerebral white matter, c...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.143.1.7063750
更新日期:1982-04-01 00:00:00
abstract::Because of recent challenges in the literature regarding the validity of the older crown-rump length (CRL) data developed with conventional static-image ultrasound scanners, the authors evaluated the relationship between CRL and menstrual age of fetuses in a population of 416 patients with good menstrual dates. By usi...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.182.2.1732970
更新日期:1992-02-01 00:00:00
abstract:PURPOSE:To retrospectively evaluate positron emission tomography (PET)/magnetic resonance (MR) enterography for the differentiation of fibrotic strictures from inflammatory strictures in patients with Crohn disease. MATERIALS AND METHODS:This HIPAA-compliant retrospective study was approved by the institutional review...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2015150566
更新日期:2016-03-01 00:00:00
abstract::Diatrizoate (76%) contrast agent heated to 100 degrees C was injected into the veins of dogs and one human volunteer for the nonsurgical occlusion of the vessels. Follow-up venograms and histologic examinations, at intervals varying from one day to four weeks later, revealed thrombosis of the injected veins in all ani...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.145.2.7134430
更新日期:1982-11-01 00:00:00
abstract:PURPOSE:To retrospectively evaluate the safety and efficacy of percutaneous image-guided laser photocoagulation for the treatment of spinal osteoid osteoma (OO) in proximity to neural structures. MATERIALS AND METHODS:This study was institutional review board-approved with waivers of informed consent. From January 199...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2015150491
更新日期:2016-03-01 00:00:00
abstract::Computed tomography has been found to be a more accurate diagnostic tool in the analysis of brain metastases than radionuclide scanning. Of 1,100 patients studied by CT scan, 57 showed evidence of intracerebral metastasis, and 14 showed evidence of hydrocephalus. Density levels below that of normal brain tissue were f...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/119.1.115
更新日期:1976-04-01 00:00:00
abstract::Distinction between multicystic kidney and hydronephrosis, the two most common causes of neonatal abdominal masses, is important because of differences in management; however, these two entities may have a similar ultrasonographic appearance. Sonograms of 22 cases of multicystic kidney and hydronephrosis were retrospe...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.151.3.6718720
更新日期:1984-06-01 00:00:00
abstract::An extremely rare occurrence of third-degree burns was induced in the medial calves of a male patient with unusual anatomy (after resection and radiation therapy of a liposarcoma) during conventional magnetic resonance (MR) imaging on a clinical 1.5-T MR system that operated without any external conductor present and ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.200.2.8685360
更新日期:1996-08-01 00:00:00
abstract:PURPOSE:To investigate whether the presence or absence of gas in the appendix may be considered as additional ultrasonographic (US) criteria to rule out or confirm acute appendicitis. MATERIALS AND METHODS:The appendices in 239 control subjects, 138 patients with lower right quadrant pain without acute appendicitis, a...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.214.1.r00ja20183
更新日期:2000-01-01 00:00:00
abstract::In vivo sodium magnetic resonance (MR) images of various structures--such as the heart, chest wall, kidneys, spine, liver, gallbladder, breasts, knees, hands, and feet--were obtained at 1.9 T. Improved sensitivity relative to standard spin-echo imaging was achieved with use of a modified three-dimensional acquisition ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.167.2.3357970
更新日期:1988-05-01 00:00:00
abstract::Purpose To retrospectively compare the perfusion parameters of advanced hepatocellular carcinoma (HCC) measured with dynamic contrast material-enhanced (DCE) magnetic resonance (MR) imaging with surrounding liver parenchyma to determine the relationship between these parameters and uncensored overall survival (OS). Ma...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2016152659
更新日期:2016-11-01 00:00:00
abstract:PURPOSE:To retrospectively evaluate interobserver variability between breast radiologists by using terminology of the fourth edition of the Breast Imaging Reporting and Data System (BI-RADS) to categorize lesions on mammograms and sonograms and to retrospectively determine the positive predictive value (PPV) of BI-RADS...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2392042127
更新日期:2006-05-01 00:00:00
abstract:PURPOSE:To measure scanner and patient variation in computed tomographic (CT) numbers for electron-beam CT and to determine the ability of calibration phantoms to reduce variability in calcium quantitation. MATERIALS AND METHODS:Two calibration phantoms were imaged to ensure longitudinal homogeneity and to determine t...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.196.1.7784560
更新日期:1995-07-01 00:00:00
abstract::Incarcerated obturator hernia is an uncommon entity that on occasion may produce specific radiographic findings and clinical signs (Howship-Romberg sign) that permit diagnosis prior to celiotomy. A case is reported in which the diagnosis was suggested when pain in the thigh was elicited during the course of a barium e...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.172.1.2740520
更新日期:1989-07-01 00:00:00
abstract:PURPOSE:To identify computed tomographic (CT) findings that are associated with the effectiveness of nonsurgical treatment in patients with adhesive small-bowel obstruction ( SBO small-bowel obstruction ) that was initially treated medically. MATERIALS AND METHODS:The local institutional review board approved this ret...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.14132872
更新日期:2014-11-01 00:00:00
abstract:PURPOSE:To compare lung densitometric measurements that use a three-dimensional (3D) reconstruction of the lungs with those obtained from analysis of two-dimensional (2D) computed tomographic (CT) images, visual emphysema scores, and data from pulmonary function tests. MATERIALS AND METHODS:Thoracic helical CT scans w...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.211.2.r99ma52541
更新日期:1999-05-01 00:00:00
abstract:PURPOSE:To evaluate the feasibility of using the ultrasmall superparamagnetic iron oxide (USPIO) SH U 555 C as an intravascular contrast agent for magnetic resonance (MR) image-guided vascular procedures with an open MR imaging system. MATERIALS AND METHODS:All experiments were performed with MR imaging at 0.2 T. MR i...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2262011815
更新日期:2003-02-01 00:00:00
abstract::Xeroradiography is an excellent technique in evaluating the fit of extremity prostheses. Because of its inherent characteristics, xeroradiography can clearly demonstrate the stump-socket relationship. Consequently, the degree of contact achieved and attendant pressure problems, if any, can be precisely determined. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/122.2.534
更新日期:1977-02-01 00:00:00
abstract:PURPOSE:To determine if magnetic resonance (MR) imaging findings of soft-tissue sarcoma involving bone or neurovascular structures allow prediction of local recurrence, distant metastasis, or disease-specific survival. MATERIALS AND METHODS:Preoperative MR images of 46 patients with soft-tissue sarcoma were reviewed f...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.205.3.9393550
更新日期:1997-12-01 00:00:00
abstract::Varicocele is a common and treatable cause of male subfertility. The authors describe a new technique for varicocele detection using radionuclide blood-pool imaging of the scrotum. Of 83 patients studied, 29 had a clinically palpable varicocele of various sizes, and 26 of them were demonstrated by this technique. Two ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.137.1.7422850
更新日期:1980-10-01 00:00:00
abstract::Four cases of severe skin reactions to the use of iocetamic acid as a contrast medium are reported. Although the incidence of this type of reaction was relatively small (1.8%), its severity induced the authors to discontinue the use of this medium. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/118.2.301
更新日期:1976-02-01 00:00:00
abstract:PURPOSE:To compare the computed tomographic (CT) findings of tuberculosis and Mycobacterium avium-intracellulare (MAI) infection in immunocompetent patients. MATERIALS AND METHODS:Seventy-seven consecutive immunocompetent patients with culture-proved pulmonary mycobacterial infection (45 with pulmonary tuberculosis, 3...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.194.2.7824720
更新日期:1995-02-01 00:00:00
abstract::The case histories and radiologic studies of eight liver transplant recipients who developed a mucocele of the allograft cystic duct remnant were retrospectively evaluated. All patients had clinical and/or laboratory evidence of biliary obstruction or cholangitis from 2 weeks to 3.3 years following transplantation. Ch...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.177.3.2243970
更新日期:1990-12-01 00:00:00
abstract:PURPOSE:To compare the subjective Likert score to the Prostate Imaging Reporting and Data System (PIRADS) and morphology-location-signal intensity (MLS) scores for categorization of prostate lesions as benign or malignant at multiparametric magnetic resonance (MR) imaging. MATERIALS AND METHODS:Two hundred fifteen pat...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.14131584
更新日期:2014-08-01 00:00:00
abstract::A computer based verification system which monitors the operation of a 4-MV linear accelerator is described. Fourteen parameters can be checked for proper alignment prior to irradiation. A training simulator was also built to minimize interference with treatment schedules and to provide technicians with experience in ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/131.1.258
更新日期:1979-04-01 00:00:00