Abstract:
PURPOSE:To assess the clinical and radiographic findings of pulmonary infections diagnosed by using invasive means. MATERIALS AND METHODS:Fifty-nine episodes of pulmonary infection were diagnosed in 52 (7.2%) of a consecutive series of 725 adult bone marrow transplant recipients. Causative organisms, time of diagnoses, radiographic patterns, and mortality rates were reviewed. RESULTS:Cytomegalovirus and Aspergillus species were the two most common pathogens, accounting for 22 and 17 episodes, respectively. During the first 30 days after bone marrow transplantation, fungi caused the majority (nine [82%] of 11 episodes) of pulmonary infections; from days 31 to 100, viruses predominated (21 [62%] of 34 episodes). Recipients of allogeneic transplants had a higher probability of developing Cytomegalovirus pneumonitis than did the recipients of autologous and syngeneic transplants (P < .001). Radiographic findings of Cytomegalovirus pneumonia consisted of parenchymal opacification (90%) and innumerable nodules smaller than 5 mm (29%); in two patients, radiographs were normal. Nodules, masses, or nodules and masses, present in nine (69%) of the 13 patients with Aspergillus infection, were the most common radiographic findings in invasive aspergillosis. Bone marrow transplant recipients with a documented pulmonary infection were found to have a lower event-free survival than recipients without infection (P < .001). CONCLUSION:Opportunistic pathogens account for the majority of pulmonary infections requiring invasive diagnosis and tend to manifest at predictable times in the course of events following recovery from bone marrow transplantation. Cytomegalovirus, the most common pathogen, causes a spectrum of radiographic findings that includes normal findings. Occurrence of a pulmonary infection is associated with an increased mortality rate.
journal_name
Radiologyjournal_title
Radiologyauthors
Leung AN,Gosselin MV,Napper CH,Braun SG,Hu WW,Wong RM,Gasman Jdoi
10.1148/radiology.210.3.r99mr39699subject
Has Abstractpub_date
1999-03-01 00:00:00pages
699-710issue
3eissn
0033-8419issn
1527-1315journal_volume
210pub_type
杂志文章相关文献
RADIOLOGY文献大全abstract::Absolute speeds (mR-1) of screen-film systems were determined accurately and precisely from ten independent measurements over a six month period at several beam qualities that included both scatter and scatter-free conditions. The absorbed x-ray energies in the screens that yielded a net film density of 1.0 were obtai...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.151.1.6701320
更新日期:1984-04-01 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:PURPOSE:To evaluate the usefulness of a radiographic system with monochromatic synchrotron radiation to depict small vessels and peripheral secretory ducts. MATERIALS AND METHODS:Radiography of various organs was tested in 14 anesthetized dogs and pancreatography was performed in an excised human pancreas by using the...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.201.1.8816540
更新日期:1996-10-01 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::The potential renal vasodilatory effect of dopamine in improving renal function after arteriography was studied. Sixty patients with preexisting renal insufficiency were prospectively randomized into two groups. Patients in the treated group (n = 30) received an infusion of dopamine for 12 hours starting at the beginn...
journal_title:Radiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1148/radiology.176.3.2202010
更新日期:1990-09-01 00:00:00
abstract:PURPOSE:To determine the effects of calculus size, composition, and technique (kilovolt and milliampere settings) on the conspicuity of renal calculi at unenhanced helical computed tomography (CT). MATERIALS AND METHODS:The authors performed unenhanced CT of a phantom containing 188 renal calculi of varying size and c...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2251010242
更新日期:2002-10-01 00:00:00
abstract:PURPOSE:To perform a systematic review to evaluate the diagnostic accuracy of hepatobiliary (HPB) phase gadoxetic acid-enhanced MR imaging of the liver in the diagnosis of focal nodular hyperplasia (FNH) versus hepatocellular adenoma (HCA) and to identify the rate of (a) reported HCAs that are iso- or hyperintense to l...
journal_title:Radiology
pub_type: 杂志文章,评审
doi:10.1148/radiol.2015142986
更新日期:2015-11-01 00:00:00
abstract::The critical aspects of selection, acceptance testing, and quality control of a radiotherapy treatment simulator are discussed. The selection of a simulator involves consideration of: (a) motions and readouts, (b) safety features, (c) x-ray and imaging systems, and (d) mechanical tolerances (including guarantees). Whe...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/131.1.221
更新日期:1979-04-01 00:00:00
abstract::The x-ray photon energies that give the highest signal-to-noise ratios per unit of exposure or average dose in mammography are significantly greater than those used in current film/screen systems. Optimum photon energies for detection of calcifications in a range of thicknesses of water and fat were calculated. Soft-t...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/127.2.517
更新日期:1978-05-01 00:00:00
abstract:PURPOSE:To evaluate the prevalence of testicular microlithiasis (TM) in children who have undergone scrotal ultrasonography (US) and their association with testicular tumors. MATERIALS AND METHODS:This HIPAA-compliant study with waiver of informed consent was approved by the institutional review board. From 2003 to 20...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.13130394
更新日期:2014-03-01 00:00:00
abstract:PURPOSE:To evaluate the value of magnetic resonance (MR) imaging with a flexible surface coil in predicting the resectability of tumors in the lower rectum and the feasibility of sphincteral salvage. MATERIALS AND METHODS:In a prospective study, 61 patients with histologically proved primary adenocarcinoma of the lowe...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.214.2.r00fe08503
更新日期:2000-02-01 00:00:00
abstract::Purpose To compare the diagnostic performance of minimally invasive autopsy with that of conventional autopsy. Materials and Methods For this prospective, single-center, cross-sectional study in an academic hospital, 295 of 2197 adult cadavers (mean age: 65 years [range, 18-99 years]; age range of male cadavers: 18-99...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2018180924
更新日期:2018-12-01 00:00:00
abstract::Steeple-shaped shadows adjacent to the diaphragm are common in upper lobe collapse due to a variety of causes. They call attention to upper lobe collapse and should not be considered indicative of intrinsic lower lobe abnormality. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.134.3.7355230
更新日期:1980-03-01 00:00:00
abstract::History A 43-year-old right-handed man presented with a history of progressive mild left-sided weakness and slowness of movements. Symptoms began 4 years earlier, and the patient noticed a progressive decline in his daily routine due to gait difficulties in the past year. There was no history of head trauma, surgery, ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2017151717
更新日期:2017-05-01 00:00:00
abstract::The American College of Radiology (ACR) convened a "think tank" of experts on aspects of molecular imaging. The purposes of the colloquium were to develop scenarios about how molecular imaging would develop in the future and to make recommendations to the ACR about how to prepare radiologists for this important set of...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2222011530
更新日期:2002-01-01 00:00:00
abstract::An unusually prominent soleal line (a normal anatomic variant) may mimic periosteal reaction along the posterior margin of the proximal tibial shaft. This area of pseudoperiostitis is differentiated from hyperostoses arising from the anterior tibial tubercle and the interosseous membrane. It is always associated with ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/119.1.79
更新日期:1976-04-01 00:00:00
abstract::The United States of America changed the composition of the penny in 1982. It is now a copper-plated, zinc-based coin. Erosions of the edge of this new coin were observed when it was impacted in the esophagus of a 13-month-old child. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.158.2.3941880
更新日期:1986-02-01 00:00:00
abstract::Three patients presented with meningitis associated with congenital defects of the inner ear, consisting of a cyst-like cochlea and a short, wide horizontal semicircular canal. The findings were easily identified on routine skull radiographs, alleviating the need for further studies and leading to treatment of the def...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.135.2.7367630
更新日期:1980-05-01 00:00:00
abstract::The authors report a patient with angina pectoris in whom selective left coronary angiography demonstrated that the pulmonary artery branch to an apical lung segment was supplied by a bronchial collateral vessel which arose from the left circumflex artery. The anatomic and physiological developmental mechanisms, and t...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/126.1.25
更新日期:1978-01-01 00:00:00
abstract:PURPOSE:To evaluate the intrapatient reproducibility of the extent and anatomic distribution of air trapping at sequential expiratory thin-section computed tomographic (CT) examinations in heart-lung transplant recipients. MATERIALS AND METHODS:Nineteen heart-lung transplant recipients (eight with and 11 without bronc...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2293020827
更新日期:2003-12-01 00:00:00
abstract::Five cases, four histologically proved, or hamartoma of the tuber cinereum and hypothalamus in children (age range: 2--12 years) are reported. Three cases had pubertas praecox, and in all of these the hamartoma was located in the basal cistern between the chiasm and pons, and had a collar button shape and size typical...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/127.3.697
更新日期:1978-06-01 00:00:00
abstract::The authors evaluated the safety and efficacy of a biopsy gun for performance of image-guided percutaneous biopsy of hepatic allografts in liver transplant recipients. Two hundred fifty-two liver biopsies were performed in 58 transplant recipients over a 27-month period by using this instrument with an 18-gauge needle...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.179.2.2014290
更新日期:1991-05-01 00:00:00
abstract::Three examples of permanently inflated transluminal catheter balloons are presented. Two of these occurred during attempted percutaneous transluminal angioplasty. Nonsurgical solutions, which were successful in each case, are described. Percutaneous puncture with a needle or a larger diameter coaxial catheter under fl...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.155.3.3159040
更新日期:1985-06-01 00:00:00
abstract::Abnormal collateral vessels develop frequently in patients with right ventricular outflow or pulmonary artery obstruction. Surgery is usually used to obliterate these vessels but may be difficult, involve prolonged operative time, or require a different thoracotomy than that used for correction or palliation of the ca...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.169.3.3186990
更新日期:1988-12-01 00:00:00
abstract::A new type of intravenous digital subtraction angiography using an extra large field size is reported. Excellent image quality of large field size enables better evaluation of widespread vascular disease and eliminates the need for repeated injections of contrast material in almost all patients. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.156.3.2862660
更新日期:1985-09-01 00:00:00
abstract:PURPOSE:To assess the anatomic development of native arteriovenous fistula (AVF) during the first 6 weeks after creation by using ultrasonographic (US) measurements in a multicenter hemodialysis fistula maturation study. MATERIALS AND METHODS:Each institutional review board approved the prospective study protocol, and...
journal_title:Radiology
pub_type: 杂志文章,多中心研究
doi:10.1148/radiol.2015150385
更新日期:2016-05-01 00:00:00
abstract::The purpose of the study was to implement a three-dimensional (3D) magnetic resonance (MR) angiographic technique with acquisition times on the order of 800 msec with use of a spoiled gradient-echo pulse sequence (repetition time, 1.60 msec; echo time, 0.65 msec) and bolus intravenous injection of contrast material do...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2243010984
更新日期:2002-09-01 00:00:00
abstract:PURPOSE:To compare 1.5- and 3.0-T magnetic resonance (MR) images of porcine knee specimens containing artificial cartilage lesions in terms of accuracy of lesion depiction, image quality, and signal-to-noise ratio (SNR). MATERIALS AND METHODS:This Health Insurance Portability and Accountability Act-compliant study had...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2361040747
更新日期:2005-07-01 00:00:00
abstract::Spherical harmonics (SH) were used to approximate the volume and three-dimensional geometry of multiple sclerosis (MS) lesions in deceased patients. The institutional ethical committee does not require its approval for studies involving pathologic specimens. Pathologic findings were used as the reference standard. In ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2353032071
更新日期:2005-06-01 00:00:00
abstract:PURPOSE:To determine whether changes at diffusion-tensor magnetic resonance (MR) imaging were present in children with intractable epilepsy and focal cortical dysplasia (FCD) in (a) subcortical white matter subjacent to MR imaging-visible areas of FCD, (b) subcortical white matter beyond the MR imaging-visible abnormal...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2511081092
更新日期:2009-04-01 00:00:00