Abstract:
PURPOSE:To retrospectively compare the kinetic and morphologic characteristics of pure ductal carcinoma in situ (DCIS) lesions depicted on dynamic contrast material-enhanced magnetic resonance (MR) images with the nuclear grade and conventional mammographic appearance of these lesions. MATERIALS AND METHODS:This HIPAA-compliant retrospective study was institutional review board approved, and informed patient consent was waived. Seventy-eight patients with 79 histologically proved pure DCIS lesions were selected. There were 17 low-nuclear-grade, 26 intermediate-nuclear-grade, 30 high-nuclear-grade, and six unclassified lesions. Sixty-five lesions were classified as fine pleomorphic, fine linear, or fine linear-branching calcifications (n = 31); amorphous or indistinct calcifications (n = 18); noncalcified mass (n = 10); or occult (n = 6) at conventional (x-ray) mammography. One experienced radiologist analyzed lesion morphology and kinetic curve shape according to the Breast Imaging Reporting and Data System lexicon. Initial enhancement percentage, time to peak enhancement (T(peak)), and signal enhancement ratio (a measure of washout) were calculated for each lesion. RESULTS:Of the 79 pure DCIS lesions, 20 (25%) exhibited enhancement plateau curves and 35 (44%) exhibited washout curves. The lesions with a masslike appearance on mammograms exhibited more suspicious kinetic characteristics (mean T(peak) approximately 2 minutes) than did the lesions with amorphous or indistinct calcifications (mean T(peak) = 4.4 minutes). There was no significant difference in enhancement kinetic properties across the nuclear grades. Lesion morphology was predominantly nonmass, with clumped or heterogeneous enhancement in a segmental or linear distribution. CONCLUSION:The pure DCIS lesions exhibited washout, plateau, and persistent enhancement curves. Enhancement kinetic characteristics varied with mammographic appearance but not with nuclear grade. SUPPLEMENTAL MATERIAL:http://radiology.rsnajnls.org/cgi/content/full/245/3/684/DC1.
journal_name
Radiologyjournal_title
Radiologyauthors
Jansen SA,Newstead GM,Abe H,Shimauchi A,Schmidt RA,Karczmar GSdoi
10.1148/radiol.2453062061subject
Has Abstractpub_date
2007-12-01 00:00:00pages
684-91issue
3eissn
0033-8419issn
1527-1315pii
245/3/684journal_volume
245pub_type
杂志文章相关文献
RADIOLOGY文献大全abstract::Exfoliative cytology of bile aspirated from percutaneously placed combined external/internal biliary drainage catheters yielded positive results in 34% of 100 cases. There were no false-positive results. Bile cytology is a simple, inexpensive, and useful method which can establish a diagnosis of malignant biliary obst...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.149.3.6647860
更新日期:1983-12-01 00:00:00
abstract:PURPOSE:To prospectively determine the accuracy of combination positron emission tomography-computed tomography (PET/CT) in lymph node staging in patients with early-stage cervical cancer, with histopathologic results as the reference standard. MATERIALS AND METHODS:The study was institutional review board approved, a...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2381041799
更新日期:2006-01-01 00:00:00
abstract::The authors suggest that ultrasound be used in the evaluation of juxtadiaphragmatic lesions before resorting to other radiographic methods. This technique gives accurate diagnoses, serves as a guide for further studies, and might obviate more extensive procedures. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/125.3.785
更新日期:1977-12-01 00:00:00
abstract::A nuclear magnetic resonance (NMR) imager with a 6.5-cm aperture is described. Spatial resolution is 0.47 X 2.0 mm with a slice thickness of 8.4 mm. Contrast resolution is 3% for a 4-minute image. Because of the excellent spatial resolution and high contrast between soft tissues, the images provide a great deal of det...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.136.3.7403550
更新日期:1980-09-01 00:00:00
abstract:PURPOSE:To quantify dynamic enhancement of breast lesions with echo-planar and conventional magnetic resonance (MR) imaging, to correlate these data with histologic findings and vessel density, and to evaluate MATERIALS AND METHODS:Twenty female patients with 22 breast lesions underwent conventional and MR echo-planar...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.197.1.7568850
更新日期:1995-10-01 00:00:00
abstract::The difficulty of demonstrating lesions near the chest wall is one source of error in mammography. A mediolateral xeroradiograph of the breast which images the chest wall was added to the routine mediolateral and cephalocaudal film-screen projections to minimize this problem. In one case, a posterior breast lesion was...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.136.3.6250200
更新日期:1980-09-01 00:00:00
abstract::Magnetic resonance (MR) gated cardiac imaging was performed in ten subjects using a prototype 0.15-T resistive magnet imaging system. Volume and planar imaging techniques utilizing saturation recovery, proton Tl-weighted relaxation time pulse sequences produced images of the heart and great vessels with exquisite anat...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.150.1.6606190
更新日期:1984-01-01 00:00:00
abstract:PURPOSE:To prospectively investigate the prevalence of fat deposition in chronic myocardial infarction (MI) by using magnetic resonance (MR) fat-water separation imaging with sampling of the entire left ventricular (LV) myocardium. A subsidiary aim was to determine the relationship between LV fat deposition and scar ch...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2532082290
更新日期:2009-10-01 00:00:00
abstract:PURPOSE:To determine whether apparent diffusion coefficient (ADC) values vary according to tumor-stroma ratio, dominant stroma type, or presence of central fibrosis in estrogen receptor-positive breast cancer. MATERIALS AND METHODS:Institutional review board approval was obtained, and patient consent was waived. Sixty...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.13131073
更新日期:2014-04-01 00:00:00
abstract::Purpose To measure the levels of gadolinium present in the rat brain 1 and 20 weeks after dosing with contrast agent and to determine if there are any histopathologic sequelae. Materials and Methods The study was approved by the GE Global Research Center Institutional Animal Care and Use Committee. Absolute gadolinium...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2016160905
更新日期:2017-03-01 00:00:00
abstract:PURPOSE:To investigate blood perfusion of nonfractured, normal-appearing vertebral bodies with regard to age and sex. MATERIALS AND METHODS:Dynamic magnetic resonance imaging (160 images obtained in 80 seconds) was performed from T10 to L5 in 66 patients. Patients were assigned to three groups: group 1, those 50 years...
journal_title:Radiology
pub_type: 临床试验,杂志文章
doi:10.1148/radiology.220.1.r01jl32213
更新日期:2001-07-01 00:00:00
abstract::A simple device is described that can reduce personnel exposure from scatter radiation by up to 75%. The device consists of an oblong piece of shielding (0.75-mm lead equivalent) that is taped to the side of the patient during percutaneous renal stone removal and other interventional procedures. Contrary to other shie...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.159.3.3704160
更新日期:1986-06-01 00:00:00
abstract:PURPOSE:To compare the diagnostic accuracy of two-dimensional (2D) full-field digital mammography with that of two-view (mediolateral and craniocaudal) and single-view (mediolateral oblique) tomosynthesis in an observer study involving two institutions. MATERIALS AND METHODS:Ethical committee approval was obtained. Al...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.11103514
更新日期:2012-03-01 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 analyze sonographic imaging features of renal collecting systems, ureters, and bladder in 32 children after endoscopic treatment of vesicoureteral reflux with autologous chondrocytes and to determine whether any features are associated with persistent reflux. MATERIALS AND METHODS:Sonograms obtained at mean...
journal_title:Radiology
pub_type: 临床试验,杂志文章
doi:10.1148/radiol.2322030551
更新日期:2004-08-01 00:00:00
abstract::In 16 consecutive patients, thrombosis, anastomotic and intragraft stenoses, and residual venous communications (arteriovenous fistulas [AVFs]), after in situ saphenous vein bypass of femoropopliteal and infrapopliteal arteries, were treated with interventional angiographic techniques. Streptokinase infusion for graft...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.170.3.2521740
更新日期:1989-03-01 00:00:00
abstract::Persistent pain and decreased range of motion are disabling complications of wrist trauma. Between 1978 and 1986, in ten patients with persistent pain following trauma, arthrography depicted changes characteristic of adhesive capsulitis. Adhesive capsulitis has been described in the shoulder, hip, and ankle, but littl...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.167.1.3347720
更新日期:1988-04-01 00:00:00
abstract:PURPOSE:To assess and compare intimal and medial vascular damage caused by three mechanical wall-contact thrombectomy devices: Fogarty embolectomy catheter, Arrow-Trerotola peripheral thrombectomy device, and MTI-Castañeda over-the-wire brush. MATERIALS AND METHODS:Bilateral external iliac arteries of 15 canines were ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.219.1.r01ap36153
更新日期:2001-04-01 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::Current management of osteoarthritis (OA) is primarily focused on symptom control. Intra-articular corticosteroid (IACS) injections are often used for pain management of hip and knee OA in patients who have not responded to oral or topical analgesics. Recent case series suggested that negative structural outcomes incl...
journal_title:Radiology
pub_type: 杂志文章,评审
doi:10.1148/radiol.2020200771
更新日期:2020-12-01 00:00:00
abstract::Purpose To determine if adherence to the Standards for Reporting of Diagnostic Accuracy (STARD) is associated with postpublication citation rates. Materials and Methods A comprehensive search of PubMed, EMBASE, and Cochrane Library databases was performed to identify published articles that have evaluated adherence of...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2016151384
更新日期:2016-07-01 00:00:00
abstract:PURPOSE:To determine performance characteristics of transvaginal ultrasonography (US) and hysterosonography for diagnosing endometrial abnormality in asymptomatic postmenopausal women with breast cancer receiving tamoxifen. MATERIALS AND METHODS:The authors prospectively examined 138 women receiving tamoxifen by using...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2203010011
更新日期:2001-09-01 00:00:00
abstract::Radiologic education, research, and the practice of radiology will be of the highest quality in the future if academic departments stress organ-system subspecialization while continuing to integrate and interface with technique-based specialists. Planning should begin now to effect an orderly progression to an organ-s...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.158.2.3510450
更新日期:1986-02-01 00:00:00
abstract:PURPOSE:To determine the radiographic appearance and features of corrosion in U.S. coins exposed to gastric acid. MATERIALS AND METHODS:Six U.S. copper-based pre-1982 pennies, 12 zinc-based post-1982 pennies, a quarter, a nickel, and a dime were exposed to postprandial concentrations of gastric acid (0.15N HCl) for 7 ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.213.1.r99oc36113
更新日期:1999-10-01 00:00:00
abstract:PURPOSE:To compare unenhanced helical computed tomography (CT) and endoscopic retrograde cholangiopancreatography (ERCP) in the detection of common bile duct calculi. MATERIALS AND METHODS:Within 13 months, 51 patients (aged 18-94 years) with clinically suspected choledocholithiasis underwent unenhanced helical CT imm...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.203.3.9169700
更新日期:1997-06-01 00:00:00
abstract::Skull scintigraphy was performed in 68 children with suspected craniosynostosis after injection of technetium-99m methylene diphosphonate. The scans demonstrated four patterns of sutural activity: normal, absent, increased, and wide. When correlated with surgical findings, "absent" indicated fused sutures, "increased"...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/133.3.615
更新日期:1979-12-01 00:00:00
abstract:PURPOSE:To prospectively evaluate the technical feasibility of both high-spatial-resolution and time-resolved contrast material-enhanced magnetic resonance (MR) angiography of the pulmonary circulation at 3.0 T. MATERIALS AND METHODS:All examinations were HIPAA compliant. After institutional review board approval and ...
journal_title:Radiology
pub_type: 临床试验,杂志文章
doi:10.1148/radiol.2403051076
更新日期:2006-09-01 00:00:00
abstract::The contrast, resolution, geometric, and motion unsharpness, mottle, and overall impression of 105mm film were compared to these quantities in conventional spot film. It is believed that conventional filming is superior for low contrast objects and cooperative patients whereas with uncooperative, obese patients, the 1...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/118.2.433
更新日期:1976-02-01 00:00:00
abstract::Although some cerebral vascular malformations are angiographically occult, the correct diagnosis may be suggested by their appearance on computed tomography (CT). The authors advise caution in assuming that angiographically avascular lesions which show contrast enhancement on CT represent neoplasms rather than vascula...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/123.3.649
更新日期:1977-06-01 00:00:00
abstract:PURPOSE:To investigate the utility of a free-breathing ultrashort echo time (UTE) sequence for the evaluation of small pulmonary nodules in oncology patients by using a hybrid positron emission tomography (PET)/magnetic resonance (MR) imaging system and to compare the nodule detection rate between UTE and a conventiona...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2015150489
更新日期:2016-01-01 00:00:00