Abstract:
:In some patients with right-lower-lobe collapse a triangular shadow was seen in the right upper lung field, continuous with the mediastinum and with its apex pointing toward the right hilus. This represents a shift of the upper anterior mediastinum to the right and may be mistaken for right-upper-lobe collapse or an infiltrate by the unwary observer. This finding, which the authors call the "upper triangle sign," occurs frequently enough in cases of significant right-lower-lobe collapse to be a useful diagnostic sign.
journal_name
Radiologyjournal_title
Radiologyauthors
Kattan KR,Felson B,Holder LE,Eyler WRdoi
10.1148/116.2.305subject
Has Abstractpub_date
1975-08-01 00:00:00pages
305-9issue
02eissn
0033-8419issn
1527-1315journal_volume
116pub_type
杂志文章相关文献
RADIOLOGY文献大全abstract:PURPOSE:To determine the clinical feasibility of a contrast material--enhanced two-dimensional (2D) magnetic resonance (MR) angiographic sequence in lower extremity arteries. MATERIALS AND METHODS:Four healthy volunteers and 12 patients underwent dynamic contrast-enhanced MR angiography; all patients also underwent co...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.196.3.7644630
更新日期:1995-09-01 00:00:00
abstract:PURPOSE:To evaluate the frequency of the supraacetabular fossa (SAF) (pseudodefect of acetabular cartilage) at magnetic resonance (MR) arthrography of the hip and to compare the MR findings with those from arthroscopy. MATERIALS AND METHODS:All patients gave written permission for anonymized use of their medical data ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.12111397
更新日期:2012-05-01 00:00:00
abstract:PURPOSE:To evaluate positron emission tomography (PET) with fluorine-18-labeled fluorodeoxyglucose (FDG) for detection of pancreatic cancer compared with computed tomography (CT) and ultrasonography (US). MATERIALS AND METHODS:Forty patients with suspected pancreatic cancer underwent static PET after intravenous injec...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.192.1.8208970
更新日期:1994-07-01 00:00:00
abstract:PURPOSE:To investigate magnetic resonance (MR) imaging guidance of interstitial laser photocoagulation to treat primary breast cancer. MATERIALS AND METHODS:Twenty female patients with symptomatic breast cancers diagnosed at cytologic examination underwent interstitial laser photocoagulation by means of a single fiber...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.200.3.8756910
更新日期:1996-09-01 00:00:00
abstract::A case of bilateral clefts in the pedicles of the L1 vertebra, diagnosed by computed tomography, is presented. The differentiation from other clefts located laterally in the neural arch is briefly summarized, and the possible origin of this entity is discussed. It is improbable that the clefts represent persistent neu...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.148.2.6867340
更新日期:1983-08-01 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::All screening radiographs of the chest and other medical records of 107 patients with histologically proved lung cancer in a fixed population were reviewed to assess the efficacy of biennial chest radiography in detecting lung cancer. Radiographic abnormalities caused by tumors were initially detected in 58 patients (...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.148.2.6306720
更新日期:1983-08-01 00:00:00
abstract:PURPOSE:To evaluate the effect of a computer-aided diagnosis (CAD) system on the diagnostic performance of radiologists for the estimation of the malignancy of pulmonary nodules on thin-section helical computed tomographic (CT) scans. MATERIALS AND METHODS:The institutional review board approved use of the CT database...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2383050167
更新日期:2006-04-01 00:00:00
abstract:PURPOSE:To evaluate whether exposure to strong static magnetic fields (SMFs), of up to 10 T, affects the growth and cycle distribution of and the micronucleus formation in monolayered Chinese hamster ovary CHO-K1 cells. MATERIALS AND METHODS:The authors developed a system to expose cultured cells to strong SMFs immedi...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2243011300
更新日期:2002-09-01 00:00:00
abstract:PURPOSE:To evaluate the feasibility of positron emission tomography (PET) with 2-[fluorine-18]-fluoro-2-deoxy-D-glucose (FDG) in patients with germ cell tumor (GCT) to monitor treatment and differentiate residual masses after chemotherapy. MATERIALS AND METHODS:Twenty-six FDG PET studies were performed in 21 patients ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.211.1.r99ap16249
更新日期:1999-04-01 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::Body computed tomographic (CT) scans were reviewed in 73 patients with hematomas of recent onset. The incidence, extent, and morphologic variation of regions of hyperdensity on precontrast scans were assessed. Hyperdensity was also sought in the scans of 80 control subjects with a mass due to neoplasm or abscess demon...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.148.3.6878700
更新日期:1983-09-01 00:00:00
abstract::The results of percutaneous drainage of abdominal abscesses in 136 patients are analyzed, revealing a failure rate of 23% (31 patients). The mortality rate was 1.4% (two patients); the rate of serious complications was 5% (seven patients). Failure rate was lowest in critically ill patients having palliative drainage o...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.159.2.2421370
更新日期:1986-05-01 00:00:00
abstract::Background MRI with fluorine 19 (19F) probes has shown an ability to track immune cell activity with a specific, stable, and quantitative signal. In addition, the chemical shift differences of selected 19F probes make dual-probe imaging possible. To improve 19F MRI sensitivity for dual-probe imaging, optimal fluorine ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2019181073
更新日期:2019-05-01 00:00:00
abstract:PURPOSE:To differentiate prostate cancers of different histopathologic grades with dynamic gadolinium-enhanced magnetic resonance (MR) imaging. Results with a conventional small-molecular contrast medium (CM) were compared to those with a prototypic macromolecular CM. MATERIALS AND METHODS:High- and low-grade tumors, ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.213.1.r99oc43265
更新日期:1999-10-01 00:00:00
abstract:UNLABELLED:Ovarian cancer is the most lethal of the gynecologic malignancies. Because ovarian cancer symptoms are subtle and nonspecific, the diagnosis is often delayed until the disease is well advanced. Overall 5-year survival is a rather dismal 50% but can be improved to greater than 90% if the disease is confined t...
journal_title:Radiology
pub_type: 杂志文章,评审
doi:10.1148/radiol.11090563
更新日期:2011-05-01 00:00:00
abstract:PURPOSE:To determine the effectiveness of magnetic resonance (MR) imaging in the diagnosis of anterolateral impingement of the ankle. MATERIALS AND METHODS:MR images were reviewed in 12 patients (12 ankles) with arthroscopically proved anterolateral impingement and in 19 control subjects (20 ankles) with diagnoses oth...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.207.2.9577480
更新日期:1998-05-01 00:00:00
abstract::A formalin-fixed cadaver head with air filling the cisternal and ventricular spaces was scanned by high-resolution computed tomography (CT) in multiple planes (axial, coronal, and sagittal) through the Meckel cave. Correlation of the CT appearance of the Meckel cave was made with an anatomic dissection and whole-head ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.152.2.6739810
更新日期:1984-08-01 00:00:00
abstract:PURPOSE:To evaluate the incidence of postoperative complications in liver donors and the efficacy of interventional management for treating these complications. MATERIALS AND METHODS:The study included 386 consecutive donors: 219 donors underwent right lobectomy or segmentectomy and 167 donors underwent left lobectomy...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2302021318
更新日期:2004-02-01 00:00:00
abstract:PURPOSE:To retrospectively determine the accuracy of endorectal magnetic resonance (MR) imaging in demonstrating seminal vesicle invasion (SVI) and to investigate the MR imaging features that can predict SVI. MATERIALS AND METHODS:The Institutional Review Board granted exempt status for this retrospective study, with ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2383050657
更新日期:2006-03-01 00:00:00
abstract:PURPOSE:To evaluate radiologists' performance for determining a distinction between benign and malignant pulmonary nodules on chest radiographs without and with use of a computer-aided diagnosis scheme. MATERIALS AND METHODS:Fifty-three chest radiographs that depicted 31 primary lung cancers and 22 benign nodules were...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2272020498
更新日期:2003-05-01 00:00:00
abstract::The plain chest film may be critical in deciding whether a seriously injured patient should undergo aortography in order to exclude traumatic aortic rupture. The roentgen findings suggestive of aortic transection reflect the presence of mediastinal bleeding. A left apical extrapleural cap is frequently seen in these p...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/117.2.265
更新日期:1975-11-01 00:00:00
abstract::A 40-year-old man with a history of tuberculosis developed massive hemoptysis. Embolization of a bronchial artery branch did not resolve the bleeding. Selective angiography eventually revealed three pseudoaneurysms arising from an apical segmental branch of the right pulmonary artery, two of which were successfully em...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.193.2.7972750
更新日期:1994-11-01 00:00:00
abstract:PURPOSE:To evaluate dynamic magnetic resonance (MR) defecography performed with a superconducting, open-configuration system in diagnosis of defecation disorders. MATERIALS AND METHODS:Five healthy volunteers and 15 patients with defecation disorders were studied with MR defecography performed with a superconducting, ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.206.3.9494480
更新日期:1998-03-01 00:00:00
abstract::The onset of impotence was related to penile trauma in ten of 90 patients who underwent angiography. Angiographic results facilitated diagnosis in all patients. Trauma was secondary to a variety of injuries including fractures, soft-tissue perineal injuries without fractures, and repeated perineal pounding during long...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.166.1.3336670
更新日期:1988-01-01 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::Portosystemic venous collaterals were studied with sonography in 40 patients with known portal hypertension. Eight patients had technically inadequate scans, while 32 had optimal scans. Sixty groups of venous collaterals were identified. At least one collateral pathway was seen in 28 patients, for a sensitivity of 88%...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.146.1.6849040
更新日期:1983-01-01 00:00:00
abstract::The authors describe an adaptive motion correction method for three-dimensional magnetic resonance (MR) imaging. Three-dimensional imaging offers many advantages over two-dimensional multisection imaging but is susceptible to image corruption due to motion. Thus, it has been of limited use in the imaging of mobile str...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.177.1.2399320
更新日期:1990-10-01 00:00:00
abstract::Left atrial-coronary sinus fenestration is a rare cause of a left-to-right or right-to-left shunt which occurs most commonly with a persistent left superior vena cava. These fenestrations may represent the only pathway for an obligatory right-to-left or left-to-right shunt in atrioventricular valve atresia. Four cases...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.135.2.7367620
更新日期:1980-05-01 00:00:00
abstract:PURPOSE:To retrospectively determine if patients with a history of intraoperative bile duct injury or liver transplantation have an increased risk for arterial injury (AI) during percutaneous transhepatic cholangiography (PTC) and percutaneous transhepatic biliary drainage (PTBD) compared with the risk of AI establishe...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2473070529
更新日期:2008-06-01 00:00:00