Abstract:
PURPOSE:To determine the value of parenchymal findings at contrast material-enhanced spiral computed tomography (CT) in patients suspected to have pulmonary embolism (PE). MATERIALS AND METHODS:Eighty-eight patients suspected to have PE underwent contrast-enhanced spiral CT and ventilation-perfusion scintigraphy. Concordance between CT and scintigraphic results was used to diagnose or exclude PE. Pulmonary angiography was attempted in all patients with discordant CT and scintigraphic results or indeterminate scans. Parenchymal CT scans were assessed by two radiologists who were not aware of the diagnosis and who had access only to lung window images. RESULTS:Twenty-six patients had PE; 62 did not. Wedge-shaped pleural-based consolidation was seen in 16 patients with PE (62%) and 17 patients without PE (27%) (P < .05) (sensitivity, 62%; specificity, 73%). Linear bands were seen in 12 patients with PE (46%) and 13 patients without PE (21%) (P < .05) (sensitivity, 46%; specificity, 79%). There was no statistically significant difference in the frequency of non-wedge-shaped consolidation, areas of decreased attenuation, or atelectasis. Central and lower-lobe segmental pulmonary arteries that contained emboli were enlarged (P < .05). CONCLUSION:Parenchymal findings may suggest further investigations when results of spiral CT are inconclusive in diagnosis of PE.
journal_name
Radiologyjournal_title
Radiologyauthors
Coche EE,Müller NL,Kim KI,Wiggs BR,Mayo JRdoi
10.1148/radiology.207.3.9609900subject
Has Abstractpub_date
1998-06-01 00:00:00pages
753-8issue
3eissn
0033-8419issn
1527-1315journal_volume
207pub_type
杂志文章相关文献
RADIOLOGY文献大全abstract::Purpose To investigate whether nonhemodynamic resonant saturation effects can be detected in patients with focal epilepsy by using a phase-cycled stimulus-induced rotary saturation (PC-SIRS) approach with spin-lock (SL) preparation and whether they colocalize with the seizure onset zone and surface interictal epilepti...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2016150368
更新日期:2016-07-01 00:00:00
abstract:PURPOSE:To investigate the histopathologic anatomy of calcium pyrophosphate dihydrate (CPPD) crystal deposition in and around the atlantoaxial joint and the association between CPPD crystal deposition and subchondral cysts, erosions, and fracture involving the odontoid process of the axis. MATERIALS AND METHODS:One ad...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.216.1.r00jl36213
更新日期:2000-07-01 00:00:00
abstract::The mediassinum is a relatively uncommon site for a pancreatic pseudocyst. Two such cases are presented, along with a review of 14 additional cases from the English literature. In most cases the pseudocyst is located in the posterior mediastinum, with entry to the mediastinum via the aortic or esophageal hiatus. The m...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/123.1.37
更新日期:1977-04-01 00:00:00
abstract::In order to determine the relative biological effectiveness (RBE) of various low- and high-LET radiotherapy beams of low coses, LAF1 mice were exposed to one dose and 10 equally fractionated doses of 60Co gamma rays, 137Cs gamma rays, 4-MeV x rays, 300-kVp x rays, helium ions in the plateau and Bragg-peak region, and ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/132.1.205
更新日期:1979-07-01 00:00:00
abstract::The records of 22 patients in whom wall thickening of the renal collecting system was seen at ultrasound (US) were retrospectively reviewed. Wall thickening was found in 15 patients with renal transplants and seven with native kidneys. Severe thickening occurred with transplant rejection, but thickening also occurred ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.168.2.3293110
更新日期:1988-08-01 00:00:00
abstract::Self-expanding metallic stents of a modified Gianturco design were used to treat benign strictures of the biliary tree in 17 patients. Thirteen patients had undergone several unsuccessful surgical repairs, and four had not undergone surgery because of their clinical status. All patients had already undergone multiple ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.175.3.2343110
更新日期:1990-06-01 00:00:00
abstract::Numerous plain chest radiographic signs previously described for the diagnosis of acute traumatic rupture of the thoracic aorta may be present in patients with or without such rupture. Displacement of an opaque nasogastric tube to the right (indicative of esophageal displacement) has been found to be the most reliable...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/125.3.603
更新日期:1977-12-01 00:00:00
abstract:PURPOSE:To quantitatively evaluate and validate a two-phase helical computed tomographic (CT) protocol for evaluation of pancreatic tumors. MATERIALS AND METHODS:Twenty-seven patients with pathologically proved pancreatic adenocarcinomas prospectively underwent two-phase CT examination with helical acquisition during ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.199.3.8637990
更新日期:1996-06-01 00:00:00
abstract::Successful balloon catheter dilatation through the defunctionalized limb of a colostomy was performed in three infants with postischemic colonic stricture. This experience suggests that balloon catheter dilatation can be an alternative to surgical resection in treating delayed ischemic colonic stricture. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.149.2.6622690
更新日期:1983-11-01 00:00:00
abstract::Digital subtraction laryngography was used to evaluate laryngeal function in 8 patients: 4 with normal larynxes and 4 with laryngeal disease. Subtracted digital images provided a dynamic display of the extent and symmetry of vocal cord excursions and pyriform sinus inflation, and the vocal cord resting position was al...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.147.3.6342030
更新日期:1983-06-01 00:00:00
abstract:PURPOSE:To determine a set of distinctive imaging findings seen in symptomatic patients with pretibial varices. MATERIALS AND METHODS:Medical records and imaging studies of patients who presented with pretibial varices over an 8-year period were collected from four institutions. Findings in six symptomatic patients wi...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.202.3.9051030
更新日期:1997-03-01 00:00:00
abstract::The papillary process of the caudate lobe of the liver may appear separate from the liver and thus mimic lymph nodes or a pancreatic mass. In order to evaluate the sonographic appearance of this anatomic structure, 400 male and female patients with a mean age of 50 years were studied prospectively by means of ultrasou...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.173.3.2682770
更新日期:1989-12-01 00:00:00
abstract::Two patients with superior vena cava syndrome (SVCS) associated with massive thrombosis were treated by means of local thrombolytic therapy and placement of modified Gianturco expandable wire stents. Treatment resulted in complete resolution of the SVCS symptoms. The combination of local thrombolytic therapy and stent...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.167.3.3363130
更新日期:1988-06-01 00:00:00
abstract:PURPOSE:To measure the safety and effectiveness of conscious sedation in order to assess utilization and the effect on magnetic resonance (MR) imaging examinations. MATERIALS AND METHODS:A database of conscious sedation records for MR imaging at the Johns Hopkins Hospital, Baltimore, Md, from 1991 to 1998 was searched...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.216.3.r00se45645
更新日期:2000-09-01 00:00:00
abstract:PURPOSE:To evaluate the potential of quantitative susceptibility (QS) and R2* mapping as surrogate biomarkers of clinically relevant, age-adjusted demyelination and iron deposition in multiple sclerosis (MS). MATERIALS AND METHODS:All study participants gave written informed consent, and the study was approved by the ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.14132475
更新日期:2014-09-01 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:PURPOSE:To quantify inter- and intrascanner conformity in computed tomographic (CT) densitometry of the lungs. MATERIALS AND METHODS:With six scanners from four manufacturers, a lung densitometry protocol with several variations was applied for performance comparison. Phantoms included water, air, and a humanoid thora...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.197.3.7480750
更新日期:1995-12-01 00:00:00
abstract:PURPOSE:To analyze the effect of the 1991 Maryland legislative mandate of screening mammography benefits. MATERIALS AND METHODS:Claims submitted between January 1991 and December 1993 for outpatient mammograms obtained in women covered under Blue Cross Blue Shield of Maryland insurance indemnity contracts were analyze...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.198.3.8628850
更新日期:1996-03-01 00:00:00
abstract:PURPOSE:To evaluate the usefulness of T2-weighted fast spin-echo magnetic resonance (MR) imaging with a 512 x 256 matrix for assessment of the preoperative stage of endometrial carcinoma. MATERIALS AND METHODS:Twenty-eight women with histopathologically proved endometrial carcinoma underwent preoperative T2-weighted f...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.206.2.9457210
更新日期:1998-02-01 00:00:00
abstract::Three-compartment arthrography has been advocated in the current literature for evaluation of the intrinsic ligaments of the wrist. Previous techniques for distal radioulnar joint (DRUJ) injection introduce the needle directly into the joint space. As is done in shoulder arthrography, however, the needle tip can be po...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.199.1.8633160
更新日期:1996-04-01 00:00:00
abstract:PURPOSE:To compare retrospectively the incremental value of indirect computed tomographic (CT) venography performed after multi-detector row CT pulmonary angiography and single-detector row CT pulmonary angiography for the diagnosis of venous thromboembolism (VTE). MATERIALS AND METHODS:The institutional ethics commit...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2401050350
更新日期:2006-07-01 00:00:00
abstract:PURPOSE:To analyze the contribution of the transverse relaxation parameter (T2), macroscopic field inhomogeneities (B0), and blood volume fraction (BVf) to blood oxygen level-dependent (BOLD)-based magnetic resonance (MR) measurements of blood oxygen saturation (SO2) obtained in a brain tumor model. MATERIALS AND METH...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.11110518
更新日期:2012-02-01 00:00:00
abstract:PURPOSE:To retrospectively compare the sensitivity of a computer-aided detection (CAD) system for depicting breast cancer in three digital mammographic views. MATERIALS AND METHODS:This study was conducted with institutional review board approval; informed consent was waived. A commercially available CAD system was ap...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2413051145
更新日期:2006-12-01 00:00:00
abstract:PURPOSE:To evaluate duplex Doppler sonography to assess renal vascular resistance (RVR) in diabetic patients. MATERIALS AND METHODS:Resistive indexes (RIs) and pulsatility indexes (PIs) were measured in intrarenal arteries of 144 patients with diabetes mellitus and 61 control subjects. RIs and PIs were compared for co...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.192.2.8029430
更新日期:1994-08-01 00:00:00
abstract::To enhance the versatility of the short-tau inversion-recovery (STIR) sequences, the authors determined a range of repetition time (TR) and inversion time (TI) combinations that suppress signal intensity from fat by study of both patient and phantom images. To make fast STIR images, variations in the following pulsing...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.179.2.2014300
更新日期:1991-05-01 00:00:00
abstract:PURPOSE:To evaluate the intra- and interreader agreement of two-dimensional computed tomographic (CT) measurements of pulmonary nodules less than 2 cm in diameter. MATERIALS AND METHODS:Three readers independently made three serial measurements of each of 54 pulmonary nodules measuring 3-18 mm that had been observed o...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2312030167
更新日期:2004-05-01 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
abstract::To evaluate the ability of ultrasonography (US) to determine venous tumor extension, we studied 120 consecutive patients with renal neoplasms. The incidence of renal vein involvement in this group was 18%; caval tumor extension occurred in 11% of the patients. Real-time US clearly visualized the entire retrohepatic in...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.156.2.3892580
更新日期:1985-08-01 00:00:00
abstract::Background Traumatic brachial plexus injuries affect 1% of patients involved in major trauma. MRI is the best test for traumatic brachial plexus injuries, although its ability to differentiate root avulsions (which require urgent reconstructive surgery) from other types of nerve injury remains unknown. Purpose To eval...
journal_title:Radiology
pub_type: 杂志文章,meta分析
doi:10.1148/radiol.2019190218
更新日期:2019-10-01 00:00:00
abstract:PURPOSE:To examine whether the different appearances of intramedullary high signal intensity (SI) on T2-weighted MR images in cervical spondylotic myelopathy are related to differences in surgical prognosis. MATERIALS AND METHODS:The magnetic resonance (MR) findings and Japanese Orthopedic Association (JOA) score of 6...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2213010365
更新日期:2001-12-01 00:00:00