Abstract:
PURPOSE:To investigate the potential application of contrast material-enhanced three-dimensional (3D) ultrasonography (US), as compared with contrast-enhanced 3D computed tomography (CT), for characterization of focal liver tumors. MATERIALS AND METHODS:Institutional review board approval and informed patient consent were obtained. One hundred thirty-nine patients with focal liver tumors-77 hepatocellular carcinomas (HCCs), 33 metastases, 23 hemangiomas, and six focal nodular hyperplasias (FNHs)-who were examined at 3D US enhanced with a perflubutane microbubble contrast agent and at 3D contrast-enhanced multidetector CT were retrospectively identified. Two readers blindly reviewed the multiplanar images and angiograms reconstructed with both modalities and classified the depicted lesions according to diagnostic criteria based on their experience and published findings. Sensitivity, specificity, positive predictive value (PPV), area under the receiver operating characteristic curve (A(z)), intermodality agreement, and interreader agreement were assessed. RESULTS:Readers 1 and 2 had concordant US and CT findings for 115 (83%) and 116 (83%) of the 139 lesions, respectively, with moderate to excellent (kappa = 0.55-0.81) intermodality agreement. There were no significant differences between the two modalities: Sensitivity was 83% or greater with both modalities, specificity was 87% or greater with contrast-enhanced US and 92% or greater with contrast-enhanced CT, the PPV was 71% or greater with both modalities, and the A(z) was at least 0.89 with US and at least 0.92 with CT. Interreader agreement was good to excellent (kappa > or = 0.76) with both modalities. CONCLUSION:Contrast-enhanced 3D US potentially can be used to characterize focal liver tumors.
journal_name
Radiologyjournal_title
Radiologyauthors
Luo W,Numata K,Morimoto M,Kondo M,Takebayashi S,Okada M,Morita S,Tanaka Kdoi
10.1148/radiol.2511081324subject
Has Abstractpub_date
2009-04-01 00:00:00pages
287-95issue
1eissn
0033-8419issn
1527-1315pii
2511081324journal_volume
251pub_type
杂志文章,随机对照试验相关文献
RADIOLOGY文献大全abstract::A patient with jaundice caused by obstruction of the biliary ducts by cysts in a polycystic liver is presented. Decompression of the liver cysts under ultrasound guidance resulted in a rapid decrease of the serum bilirubin level. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.136.2.7403520
更新日期:1980-08-01 00:00:00
abstract:PURPOSE:To correlate intravoxel incoherent motion (IVIM) diffusion-weighted imaging (DWI) parameters with the enhancement patterns of bone marrow and focal lesion obtained on whole-body (WB) dynamic contrast agent-enhanced (DCE) magnetic resonance (MR) images in patients with stage-III multiple myeloma (MM) before and ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2015141728
更新日期:2015-12-01 00:00:00
abstract::Fifty-one patients underwent both radionuclide and ultrasound studies of the hepatobiliary system. Eleven patients had large bile duct obstruction, six had intrahepatic diffuse small duct obstruction, and 37 had no obstruction. In all 11 patients with large duct obstruction, the radionuclide images were abnormal, but ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.138.1.7455080
更新日期:1981-01-01 00:00:00
abstract::Fifty-five liver metastases in 21 patients were treated with interstitial laser photocoagulation (ILP). Tumors were irradiated with a neodymium yttrium aluminum garnet laser via optical fibers passed through 19-gauge needles inserted under ultrasound (US) guidance. Heating of the tumor was evident at real-time US as a...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.187.2.8475270
更新日期:1993-05-01 00:00:00
abstract:PURPOSE:To investigate the value of viscosity measured with ultrasonographic (US) elastography in liver fibrosis staging and to determine whether the use of a viscoelastic model to estimate liver elasticity can improve its accuracy in fibrosis staging. MATERIALS AND METHODS:The study, which was performed from February...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.12120837
更新日期:2013-03-01 00:00:00
abstract::The authors present the postoperative angiographic appearance of the revascularized renal artery in 128 patients. The angiographic findings in four types of surgical procedures (saphenous bypass graft, dacron graft, endarterectomy, and reimplantation of the renal artery) are discussed. Postoperative angiography accura...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/126.2.345
更新日期:1978-02-01 00:00:00
abstract:PURPOSE:To prospectively assess the accuracy of unenhanced magnetic resonance (MR) imaging in the detection and localization of labral injuries. MATERIALS AND METHODS:One hundred three patients with clinically suspected shoulder injuries were prospectively examined with unenhanced MR imaging. A combination of gradient...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.200.2.8685350
更新日期:1996-08-01 00:00:00
abstract::After institutional review board approval, informed consent was obtained from six patients (four men and two women, aged 47-74 years) with a total of six tumors of the liver dome. These patients were treated by means of radiofrequency (RF) ablation with computed tomographic (CT) guidance and a transthoracic approach. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2362040992
更新日期:2005-08-01 00:00:00
abstract::The relation of liver fat content to CT number was studied in 20 rabbits (17 experimental, 3 control), where fatty degeneration was produced by carbon tetrachloride (CCl4) ingestion. Liver scanning was performed before and 2--5 days after CCl4 administration.. Changes (decrease) in CT number were compared with triglyc...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/130.2.511
更新日期:1979-02-01 00:00:00
abstract:PURPOSE:To collect up-to-date data in healthy children to create a digital hand atlas (DHA) that can be used to evaluate, on the basis of the Greulich and Pyle atlas method, racial differences in skeletal growth patterns of Asian, African American, white, and Hispanic children in the United States. MATERIALS AND METHO...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2493080468
更新日期:2009-01-01 00:00:00
abstract::Congenital arteriovenous malformations (AVMs) involving the pelvis or an extremity were occluded in 16 symptomatic patients, who subsequently underwent tailored embolotherapy. An additional 11 patients did not undergo embolization due to unfavorable vascular anatomy or lack of significant symptoms. Permanent occlusive...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.169.2.3175000
更新日期:1988-11-01 00:00:00
abstract::The CT findings in 16 patients with histologically proved primary central nervous system (CNS) reticulum cell sarcoma (RCS) showed this malignancy to have predilection for the basal ganglia and thalamus, the periventricular white matter, the corpus callosum, and the vermis cerebelli. In 43% of patients with untreated ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/130.1.165
更新日期:1979-01-01 00:00:00
abstract::A fluoroscopic system was modified to achieve a 95-98% reduction in radiation exposure and dosage to patients compared with other systems that reduce fluoroscopic radiation dosage. This reduction was accomplished by custom selection of a high conversion-factor, triplemode image intensifier; custom design of a variable...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.153.1.6473790
更新日期:1984-10-01 00:00:00
abstract::Two patients with a total of 4 intracerebral hemorrhages were examined by serial computer tomography (CT) over a period of up to 6 months, revealing a progressive decrease in lesion volume and density which eventually became less than that of the surrounding brain tissue. These changes were interpreted as complete clo...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/118.3.609
更新日期:1976-03-01 00:00:00
abstract::A single step wedge imaging technique is described for the proper evaluation of light fog in radiographic darkrooms. Tests indicate that this technique is a more sensitive indicator of light fog than the conventional technique utilizing unexposed film. It is recommended that fog tests be carried out in radiographic da...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/115.1.225
更新日期:1975-04-01 00:00:00
abstract:PURPOSE:To evaluate, by using computer image analysis, the mammographic density patterns of women with germ-line mutations in BRCA1 and BRCA2 genes in comparison with those of women at low risk of developing breast cancer. MATERIALS AND METHODS:Mammograms from 30 carriers of BRCA1 and BRCA2 mutations and from 142 low-...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2252010845
更新日期:2002-11-01 00:00:00
abstract::Otosclerosis (otospongiosis) is a primary focal disease of the labyrinthine capsule. The stapes footplate is fixed when the spongiotic focus expands and invades the oval window. Persons with stapedial otosclerosis experience a progressive conductive hearing loss. In many cases, cochlear degeneration is observed, in wh...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.156.3.4023230
更新日期:1985-09-01 00:00:00
abstract::Background Intracranial atherosclerosis is an important cause of ischemic stroke and is associated with several vascular risk factors. Current imaging is mainly based on the assessment of luminal narrowing rather than abnormalities in the vessel wall. Purpose To investigate the relationship between vascular risk facto...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2020190643
更新日期:2020-04-01 00:00:00
abstract::Percutaneous transhepatic removal of common bile duct stones was performed 54 times in 50 patients with a success rate of 93%. In all patients, a modified Dormia basket was inserted through a percutaneous transhepatic catheter, and the stones or fragments were advanced into the duodenum. All patients had contraindicat...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.170.3.2916070
更新日期:1989-03-01 00:00:00
abstract::Purpose To assess the performance of computer-aided diagnosis (CAD) systems and to determine the dominant ultrasonographic (US) features when classifying benign versus malignant focal liver lesions (FLLs) by using contrast material-enhanced US cine clips. Materials and Methods One hundred six US data sets in all subje...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2017170365
更新日期:2018-03-01 00:00:00
abstract::Empyema developing from retropharyngeal abscess is a rare complication. Two infants with clinical symptomatology and inital chest radiographic findings of pleural fluid which suggested the possibility of retrophoryngeal abscess are described. A child with submandibular and cervical abscesses is also reported; pleural ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/126.3.743
更新日期:1978-03-01 00:00:00
abstract:PURPOSE:To present our experience with helical computed tomographic (CT) arteriography as the initial diagnostic examination in patients suspected to have focal arterial injuries of the proximal extremities. MATERIALS AND METHODS:During 19 months, 142 arterial segments in the proximal portions of the extremities of 13...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.218.1.r01ja13188
更新日期:2001-01-01 00:00:00
abstract::The results of treatment for recurrent cancer at the tracheal stoma have been poor. From 1971 to 1976, elective postoperative irradiation of the neck was given to 26 high-risk patients with carcinoma of the larynx and hypopharynx. None of the 22 patients whose stomas were irradiated developed stomal or peristomal recu...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/124.3.809
更新日期:1977-09-01 00:00:00
abstract::Twenty-nine subjects with occupational asbestos exposure and clinical asbestosis were examined with high-resolution computed tomography (HRCT) to determine its sensitivity, relative to that of conventional computed tomography (CT), for detection of benign asbestos-related disease. Thin-section HRCT scans were obtained...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.166.3.3340770
更新日期:1988-03-01 00:00:00
abstract:PURPOSE:To explore the lower limits for radiofrequency (RF) power-induced specific absorption rate (SAR) achievable at 1.5 T for brain magnetic resonance (MR) imaging without loss of tissue signal or contrast present in high-SAR clinical imaging in order to create a potentially viable MR method at ultra-low RF power to...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.11092445
更新日期:2011-05-01 00:00:00
abstract:PURPOSE:To evaluate the repeatability of quantitative computed tomographic (CT) indexes of emphysema and the effect of spirometric gating of lung volume during CT in candidates for lung volume reduction surgery (LVRS). MATERIALS AND METHODS:Initial and same-day repeat routine inspiratory spiral chest CT studies were p...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.220.2.r01au46448
更新日期:2001-08-01 00:00:00
abstract::Anti-scatter grids reduce the amount of secondary radiation contributing to the image and improve the signal-to-noise ratio. However, they may also lead to the creation of linear artifacts representing the shadows of the radiopaque septa. Grid motion perpendicular to the septa during the exposure can cause blurring of...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.147.1.6828740
更新日期:1983-04-01 00:00:00
abstract:PURPOSE:To evaluate the ability of magnetization transfer (MT) contrast-prepared magnetic resonance (MR) imaging to help distinguish healthy from cirrhotic liver by using a spectrum of MT pulse frequency offsets. MATERIALS AND METHODS:This HIPAA-compliant prospective study was approved by the institutional review boar...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.11111043
更新日期:2012-01-01 00:00:00
abstract:PURPOSE:To evaluate possible radiation dose reduction in the extremities with use of digital radiography and a needle-structured image plate (NIP) by comparing this technique with digital radiography performed with a powder-structured image plate (PIP) and a flat-panel detector (FPD). MATERIALS AND METHODS:This study ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2493080640
更新日期:2009-01-01 00:00:00
abstract:PURPOSE:To evaluate the potential utility of a number of parameters obtained at T2-weighted, diffusion-weighted, and dynamic contrast material-enhanced multiparametric magnetic resonance (MR) imaging for computer-aided diagnosis (CAD) of prostate cancer and assessment of cancer aggressiveness. MATERIALS AND METHODS:In...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.13121454
更新日期:2013-06-01 00:00:00