Abstract:
:Prototype electronic workstations incorporated in networks linking computed tomographic (CT) and magnetic resonance imaging systems are being developed. The authors compared observer efficiency and sensitivity in reading body CT studies from a two-screen workstation (1,000-line monitors and 12-bit dynamic range in image memory) and conventional film panel alternator. The two-screen workstation displayed 32 images at a matrix resolution of 256 x 256 or eight images at a matrix resolution of 512 x 512 simultaneously. Ninety-six images with a matrix resolution of 512 x 512 could be displayed simultaneously at the film panel alternator. Four observers read images from 20 cases, 10 with repeat examinations, in a randomized viewing sequence. There was an average of 32 images per case. Reporting time was less with the film panel alternator (average, 5.08 minutes) than with the workstation (average, 6.66 minutes). There was improved sensitivity for all observers in reading from the film panel alternator (range, 1%-12%) (P less than .05). In complex cases evaluated by means of body CT, the current prototype two-screen electronic workstation is limited by display capabilities.
journal_name
Radiologyjournal_title
Radiologyauthors
Foley WD,Jacobson DR,Taylor AJ,Goodman LR,Stewart ET,Gurney JW,Stroka Ddoi
10.1148/radiology.174.3.2305060subject
Has Abstractpub_date
1990-03-01 00:00:00pages
769-73issue
3 Pt 1eissn
0033-8419issn
1527-1315journal_volume
174pub_type
杂志文章相关文献
RADIOLOGY文献大全abstract:PURPOSE:To estimate the radiation dose from whole-body fluorine 18 ((18)F)-fluorodeoxyglucose (FDG) positron emission tomographic (PET)/computed tomographic (CT) studies and to evaluate the induced cancer risk to U.S. and Hong Kong populations. MATERIALS AND METHODS:Fluorine 18-FDG PET/CT studies obtained by using a 6...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2511081300
更新日期:2009-04-01 00:00:00
abstract::A presumed new radiological-pathological entity of atherosclerotic subintimal of the carotid artery is described. Subintimal hematomas were found in 12 of 50 (24%) carotid bifurcations during surgery for repeated transient ischemic attacks in a single hemispheric distribution; only 33% were associated with ulcerations...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/133.1.123
更新日期:1979-10-01 00:00:00
abstract::A retrospective analysis of 84 ultrasound examinations (in 77 patients) was performed to assess the frequency of sonographic findings in chronic pancreatitis. The findings included: inhomogeneously increased echogenicity in 53% of these examinations, focal or diffuse enlargement in 41%, focal dense echoes in 40%, pseu...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.155.1.3883420
更新日期:1985-04-01 00:00:00
abstract:PURPOSE:To evaluate use of the transjugular intrahepatic portosystemic shunt (TIPS) as a nonsurgical approach for the management of Budd-Chiari syndrome (BCS). MATERIALS AND METHODS:Twelve patients with fulminant (n = 2), subacute (n = 5), or chronic (n = 5) BCS underwent TIPS placement. Hepatic venous obstruction was...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.197.3.7480760
更新日期:1995-12-01 00:00:00
abstract:PURPOSE:To determine the individual technical costs of general diagnostic radiographic, ultrasonographic (US), computed tomographic (CT), magnetic resonance (MR) imaging, and scintigraphic examinations and interventional radiology. MATERIALS AND METHODS:The Radiology Cost and Productivity Benchmarking Study method of ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.216.1.r00jl18269
更新日期:2000-07-01 00:00:00
abstract:PURPOSE:To assess the diagnostic performance of various Doppler ultrasonographic (US) vascularity measures in conjunction with grayscale (GS) criteria in differentiating benign from malignant breast masses, by using histologic findings as the reference standard. MATERIALS AND METHODS:Institutional Review Board and HIP...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2492060888
更新日期:2008-11-01 00:00:00
abstract:PURPOSE:To evaluate prospectively the accuracy of indirect magnetic resonance (MR) arthrography for supraspinatus tendon tears during neutral positioning or abduction and external rotation (ABER) and neutral positioning. MATERIALS AND METHODS:Informed consent was obtained in all patients, and the study was approved by...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2393050453
更新日期:2006-07-01 00:00:00
abstract::Periportal low attenuation, defined as a low-attenuation rim around the portal vein and its branches that is seen on contrast material-enhanced computed tomographic (CT) scans, has been described in a variety of conditions in adults. The authors reviewed the appearance of periportal low attenuation on CT scans of 30 c...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.183.3.1584920
更新日期:1992-06-01 00:00:00
abstract::Thirty-nine magnetic resonance (MR) studies were performed on 31 women with surgically proved endometriosis. A total of 88 endometriotic lesions ranging in size from 0.2 to 7.5 cm were detected on 24 of 30 MR images of women. The signal intensities ranged from hyperintense on all pulse sequences (41 of 88) to hypointe...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.171.3.2717740
更新日期:1989-06-01 00:00:00
abstract::HistoryA 55-year-old man with a history of chronic pancreatitis secondary to chronic alcohol abuse presented to the hospital with acute abdominal pain, generalized weakness, weight loss, and pyrexia. A clinical examination revealed he was tender to touch in the upper abdomen. Laboratory tests revealed a serum alkaline...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2019171373
更新日期:2020-01-01 00:00:00
abstract:PURPOSE:To determine the diagnostic accuracy of bedside chest radiography in patients who develop severe pulmonary complications while undergoing therapy for leukemia. MATERIALS AND METHODS:The authors studied 45 patients, aged 21 years and younger, who died of leukemia or of treatment complications and for whom autop...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.193.1.8090880
更新日期:1994-10-01 00:00:00
abstract:PURPOSE:To determine the radiologic appearance of ganglioneuromas of the adrenal gland and extra-adrenal retroperitoneum. MATERIALS AND METHODS:A retrospective review was performed of imaging findings in nine patients with ganglioneuroma, two with ganglioneuroma-pheochromocytoma, and two with malignant peripheral nerv...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.202.3.9051020
更新日期:1997-03-01 00:00:00
abstract:PURPOSE:To determine the feasibility of mapping the spatial variation of cartilage T2 relaxation time in vivo in the pediatric knee with a 1.5-T clinical magnetic resonance (MR) imaging system and the manufacturer's body gradient coil. MATERIALS AND METHODS:Twenty-five children and adolescents (age range, 5-17 years; ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2251011461
更新日期:2002-10-01 00:00:00
abstract:PURPOSE:To examine the cost and efficacy of diagnostic work-up in patients with invasive cervical cancer. MATERIALS AND METHODS:In 246 patients with invasive cervical cancer, all diagnostic tests performed before treatment were recorded. Patients were divided into two groups: those who underwent magnetic resonance (MR...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.198.2.8596840
更新日期:1996-02-01 00:00:00
abstract:PURPOSE:To prospectively compare the accuracy of fluorine 18 fluorodeoxyglucose (FDG) positron emission tomography (PET) and computed tomography (CT) for detection of primary tumor and metastasis to individual lymph node groups and for nodal staging. MATERIALS AND METHODS:From February 2000 to July 2001, 81 patients w...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2281020423
更新日期:2003-06-01 00:00:00
abstract::To evaluate the mesenteric circulation with magnetic resonance (MR) angiography, the authors examined 16 individuals (12 patients, four volunteers) with a gadolinium-enhanced, breath-hold, fat-saturated, multiecho, three-dimensional, gradient-echo sequence. Twenty examinations were performed. Grades of 3 or 4 (on a fi...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.202.1.8988220
更新日期:1997-01-01 00:00:00
abstract::The vertebral involvement of DISH is described from an evaluation of 215 cadaveric spines and 100 patients with the disease. Radiographic features include linear new bone formation along the anterolateral aspect of the thoracic spine, a bumpy contour, subjacent radiolucency, and irregular and pointed bony excrescences...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/119.3.559
更新日期:1976-06-01 00:00:00
abstract::Arthropathy is part of the protean manifestations of Behçet disease. Imaging findings reported thus far have been based on those of conventional radiography. Magnetic resonance imaging in two cases of Behçet disease with arthropathy demonstrated synovial thickening and effusion, as well as myositis manifested by high ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2262011982
更新日期:2003-02-01 00:00:00
abstract:PURPOSE:To retrospectively evaluate the sensitivity of computer-aided detection (CAD) in depicting ductal carcinoma in situ (DCIS) on screening mammograms by using biopsy proved lesion location as the reference standard. MATERIALS AND METHODS:Institutional review board approval was obtained, with a waiver of patient i...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2413051366
更新日期:2006-12-01 00:00:00
abstract::Gray scale ultrasonic visualization of the breast is a simple and safe technique for the detection of liquid-filled masses. Cysts and enlarged ducts as small as 2 mm in diameter can be reliably detected with a greater accuracy than is possible with any other imaging technique. The ultrasonic examination provides consi...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/125.1.205
更新日期:1977-10-01 00:00:00
abstract::Transbronchial biopsy to sample lymph nodes and tumors that are not visible at endoscopy has a poor (<50%) success rate. These nodes can be highlighted easily at virtual computed tomographic (CT) bronchoscopy to provide a guide. This study was performed to evaluate if the addition of this information to the bronchosco...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2211001585
更新日期:2001-11-01 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::Pressures were measured in the graft and the central vein during 104 consecutive angiographic examinations of failing hemodialysis grafts. Stenosis severity greater than 40% led to a statistically significant rise in graft pressure. In grafts in which all stenoses were of 40% or less severity, the systolic pressures i...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.186.3.8430200
更新日期:1993-03-01 00:00:00
abstract::Noninvasive breast cancer comprises two distinct entities, lobular carcinoma in situ (LCIS) and ductal carcinoma in situ (DCIS). The increased use of screening mammography has caused more cases of noninvasive breast cancer to be discovered. However, the increased detection of LCIS and DCIS has posed problems in patien...
journal_title:Radiology
pub_type: 杂志文章,评审
doi:10.1148/radiology.190.3.8115600
更新日期:1994-03-01 00:00:00
abstract::The incidental radiation dose of lithium fluoride thermoluminescence dosimeters was recorded during 15 treatments of patients with auricular keloids. Two half-value layers were used, and the results were compared. In both instances, the homolateral lens and thyroid received twice the contralateral dose. The oropharynx...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.144.3.7100490
更新日期:1982-08-01 00:00:00
abstract::Detection of pulmonary nodules using spin-echo magnetic resonance (MR) imaging was compared with detection using computed tomography (CT). Of the 25 patients studied independently by two radiologists, no lung nodules were detected in 11 (CT or MR), ten had a single nodule, and four had multiple nodules. The lesions no...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.155.3.4001370
更新日期:1985-06-01 00:00:00
abstract::The authors conducted a multivariate analysis of the prognostic factors in 96 patients with early glottic cancer treated by radiation therapy. Of these, 73 had T1 and 23 had T2 tumor. The primary tumor was controlled in 82% of T1 and 74% of T2 lesions. Actuarial five-year survival rates were 87% for T1 and 74% for T2....
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.149.1.6611940
更新日期:1983-10-01 00:00:00
abstract::On computed tomographic scans of the upper abdomen the interface sign can help distinguish pleural and intra-abdominal fluid readily and accurately. A hazy interface between the fluid and liver or spleen is characteristic of pleural fluid. A sharp interface is characteristic of ascites. The interface sign has proved t...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.144.2.7089290
更新日期:1982-07-01 00:00:00
abstract::An unusual case of unintentional release of a spring coil into the superior mesenteric artery is reported. The coil migrated distally into the ileocolic artery, and the situation was successfully resolved by retrieval of the coil with grasping forceps. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.160.2.3726140
更新日期:1986-08-01 00:00:00
abstract:PURPOSE:To evaluate the ability to depict anatomy and complications of renal vascular transplant with unenhanced magnetic resonance (MR) angiography with spatial labeling with multiple inversion pulses (SLEEK) and to compare the results with color Doppler (CD) ultrasonography (US), digital subtraction angiography (DSA)...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.14131800
更新日期:2014-06-01 00:00:00