Abstract:
PURPOSE:To retrospectively evaluate the prevalence of neonatal intracranial hemorrhage (ICH) and its relationship to obstetric and neonatal risk factors. MATERIALS AND METHODS:Pregnant women were recruited for a prospective study of neonatal brain development; the study was approved by the institutional review board and complied with HIPAA regulations. After informed consent was obtained from a parent, neonates were imaged with 3.0-T magnetic resonance (MR) imaging without sedation. The images were reviewed by a neuroradiologist with 12 years of experience for the presence of ICH. Medical records were prospectively and retrospectively reviewed for selected risk factors, which included method of delivery, duration of labor, and evidence of maternal or neonatal birth trauma. Risk factors were assessed for relationship to ICH by using Fisher exact test statistics. RESULTS:Ninety-seven neonates (mean age at MR imaging, 20.8 days +/- 6.9 [standard deviation]) underwent MR imaging between the ages of 1 and 5 weeks. Eighty-eight (44 male and 44 female) neonates (65 with vaginal delivery and 23 with cesarean delivery) completed the MR imaging evaluation. Seventeen neonates with ICHs (16 subdural, two subarachnoid, and six parenchymal hemorrhages) were identified. Seven infants had two or more types of hemorrhages. All neonates with ICH were delivered vaginally, with a prevalence of 26% in vaginal births. ICH was significantly associated with vaginal birth (P < .005) but not with prolonged duration of labor or with traumatic or assisted vaginal birth. CONCLUSION:Asymptomatic ICH following vaginal birth in full-term neonates appears to be common, with a prevalence of 26% in this study.
journal_name
Radiologyjournal_title
Radiologyauthors
Looney CB,Smith JK,Merck LH,Wolfe HM,Chescheir NC,Hamer RM,Gilmore JHdoi
10.1148/radiol.2422060133subject
Has Abstractpub_date
2007-02-01 00:00:00pages
535-41issue
2eissn
0033-8419issn
1527-1315pii
2422060133journal_volume
242pub_type
杂志文章相关文献
RADIOLOGY文献大全abstract::Phantom and in vitro studies were performed to evaluate the potential application of digital circular tomosynthesis in imaging of the breast and upper cervical spine. A prototype volumetric x-ray system was used to image a mammographic phantom, a fresh mastectomy specimen, and a head phantom containing the upper cervi...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2282020295
更新日期:2003-08-01 00:00:00
abstract:PURPOSE:To determine the prevalence of clinically serious findings unrelated to stroke on cranial magnetic resonance (MR) images in a population of community-dwelling elderly people. MATERIALS AND METHODS:Neuroradiologists reviewed MR images of 3,672 people aged 65 years and older who were enrolled in a longitudinal, ...
journal_title:Radiology
pub_type: 杂志文章,多中心研究
doi:10.1148/radiology.202.1.8988190
更新日期:1997-01-01 00:00:00
abstract::A new software program provides the real-time display of high-resolution computed tomographic reformation in the axial, coronal, sagittal, or oblique views. The advantages of this new technique over the standard multiplanar format include (a) larger image display format, (b) reconstruction of entire dataset for each o...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.170.1.2909110
更新日期:1989-01-01 00:00:00
abstract:PURPOSE:To evaluate the prevalence and appearance of azygos arch valves at intravenous contrast material-enhanced computed tomography (CT). MATERIALS AND METHODS:Findings of 309 intravenous contrast-enhanced spiral CT examinations of the chest were retrospectively reviewed. The presence of contrast material reflux int...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2301021216
更新日期:2004-01-01 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:PURPOSE:To prospectively determine if kinematic magnetic resonance (MR) imaging of the knee may demonstrate displacement of menisci with tears and, if so, to characterize displaceable and nondisplaceable meniscal tears. MATERIALS AND METHODS:The study was approved by the hospital's review board, and informed consent w...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2381041234
更新日期:2006-01-01 00:00:00
abstract:PURPOSE:To assess the value of magnetic resonance (MR) imaging in the detection of postoperative complications after composite valve graft replacement. MATERIALS AND METHODS:Spin-echo and gradient-echo MR imaging was performed in 52 patients 1/2 to 200 months after composite graft replacement of the ascending aorta (2...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.212.2.r99au02573
更新日期:1999-08-01 00:00:00
abstract::Squamous cell carcinoma is aggressive, destroying surrounding bony margins. The radiographic finding of an expansile mass is rarely if ever caused solely by squamous cell carcinoma, and it should prompt the radiologist to question either the pathological diagnosis or the coexistence of a mucocele. Surgery prior to rad...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.136.1.7384530
更新日期:1980-07-01 00:00:00
abstract::A case of a 19-year-old woman with generalized neurofibromatosis and hypertension due to left main renal artery mesodermal dysplasia is presented. Renal artery stenosis was effectively treated with percutaneous transluminal angioplasty. The relevant literature is also reviewed. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.139.3.6785820
更新日期:1981-06-01 00:00:00
abstract::Radiographic changes produced in the male urethra by instrumentation were studied by pre- and postoperative urethrograms in 50 consecutive men as well as in several hundred selected patients. All 50 patients showed postoperative changes in the urethra. Obvious findings developed in 30% without symptoms while 14% of th...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/116.3.623
更新日期:1975-09-01 00:00:00
abstract::The authors adapted the transport system of a computed tomographic (CT) scanner with continuous rotation capability to examine complete lung subvolumes during a single breath hold. Twenty-four adult patients underwent scanning with up to 12 continuous 1-second rotations, and data acquisition was synchronized with long...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.176.3.2389050
更新日期:1990-09-01 00:00:00
abstract:PURPOSE:To correlate upper gastrointestinal study findings of the position of the duodenum and duodenal-jejunal junction in children after liver transplantation with transplant type, age at transplantation, indication for transplantation, and history of surgery or malrotation. MATERIALS AND METHODS:Upper gastrointesti...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.207.1.9530320
更新日期:1998-04-01 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::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 evaluate fluorine 18 ((18)F) dihydroxyphenylalanine (DOPA) whole-body positron emission tomography (PET) as a biochemical imaging approach for detection of pheochromocytomas. MATERIALS AND METHODS:(18)F DOPA PET and magnetic resonance (MR) imaging were performed in 14 consecutive patients suspected of havin...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2222010622
更新日期:2002-02-01 00:00:00
abstract::Prototype surface coil magnetic resonance (MR) images were obtained from phantoms and 42 subjects at 0.6 T to assess the feasibility of imaging relatively deep abdominal structures. Surface coil images demonstrated a two- to fourfold improvement in signal-to-noise ratio (SNR) when compared with whole-body coil images ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.157.2.4048450
更新日期:1985-11-01 00:00:00
abstract::Radiation dose data were collected from a calibrated multi-detector row computed tomographic (CT) scanner during trauma CT. One protocol (used with 10 case subjects) involved a single-pass continuous whole-body acquisition from cranial vertex to symphysis pubis, while the other, conventional protocol (used with 10 con...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2293021651
更新日期:2003-12-01 00:00:00
abstract::Computer-controlled graphic displays are a necessity in many nuclear medicine studies. The authors propose using a set-up consisting of three modules: (a) a display system based on television technology; (b) an instrument interface employing list mode and having a low information loss rate; and (c) flexible modular so...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/124.3.759
更新日期:1977-09-01 00:00:00
abstract::A new technique for the determination of bone mineral density, based on the detection of both coherently and Compton scattered photons in a narrow beam geometry, is described. Initial results show that this method delivers an accuracy of less than 2% when varying quantities of materials surround the measuring site. ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/120.3.723
更新日期:1976-09-01 00:00:00
abstract::Twenty cases of methadone-induced pulmonary edema confirmed by clinical, laboratory and roentgenographic findings were extensively reviewed and the roentgenographic manifestations defined in terms of patterns, distribution, and duration of the process. Drug tolerance is a major factor in determining the severity of to...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/114.1.51
更新日期:1975-01-01 00:00:00
abstract:PURPOSE:To assess the relationship between imaging findings, therapy, and functional outcome in patients with persistent low back pain who are suspected of having herniated nucleus pulposus. MATERIALS AND METHODS:Data collected during a multicenter, longitudinal study were retrospectively analyzed (n = 1,084). Multiva...
journal_title:Radiology
pub_type: 杂志文章,多中心研究
doi:10.1148/radiology.203.3.9169710
更新日期:1997-06-01 00:00:00
abstract::The authors have occasionally observed nodular areas abutting the lateral diaphragmatic surface and extending into the posterior pararenal space on computed tomographic (CT) scans. Review of the anatomy literature revealed that this finding represents inferolateral extension of the lateral arcuate ligaments, which ref...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.185.1.1523290
更新日期:1992-10-01 00:00:00
abstract::In 3,600 patients evaluated with technetium-99m sulfur colloid for metastatic liver disease, 40 had equivocal scans due to a solitary defect in the interior margin of the right lobe. In these patients, the authors differentiated the gallbladder fossa from a metastatic focus using one of two new hepatobiliary agents: t...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.136.2.7403530
更新日期:1980-08-01 00:00:00
abstract::A total of 24,560 fetal biparietal measurements were made using the B-scan technique. The increase in biparietal diameter was compared in normal pregnancies, in those complicated by diabetes or toxemia, and in fetuses thought to be small for dates. Only the last of these groups demonstrated a statistically significant...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.137.1.7422840
更新日期:1980-10-01 00:00:00
abstract::The diagnosis of pulmonary sequestration has traditionally relied on angiographic demonstration of a systemic artery to the sequestered lung tissue. Rarely, extralobar sequestration can be associated with tension hydrothorax, which in the past has invariably led to fetal hydrops and death. The authors report the cases...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.180.3.1871300
更新日期:1991-09-01 00:00:00
abstract:PURPOSE:To determine the diagnostic accuracy of breath-hold, contrast material-enhanced, three-dimensional (3D) magnetic resonance (MR) angiography in the assessment of the aortoiliac inflow tract and renal arteries with conventional catheter angiography as the standard of reference. MATERIALS AND METHODS:In 39 patien...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.204.2.9240520
更新日期:1997-08-01 00:00:00
abstract::High-resolution magnetic resonance (MR) images of the skin were acquired with a whole-body MR system at 1.5 T by adding a specific imaging module: A saddle-shaped surface gradient coil was connected in place of one of the gradient coils of the system, and a surface radio-frequency coil with a 1.5-cm radius was placed ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.176.2.2367660
更新日期:1990-08-01 00:00:00
abstract::A case of actinomycosis involving the pelvic cavity is reported. The patient had a pelvic mass clinically and radiographically. Barium enema examination showed a mass with extrinsic compression and fixed narrowing of the rectum with mucosal irregularity. A computed tomographic scan showed a pelvic mass displacing the ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.148.2.6867330
更新日期:1983-08-01 00:00:00
abstract:PURPOSE:To identify mechanism(s) responsible for carpal tunnel syndrome (CTS). MATERIALS AND METHODS:At dynamic gadolinium-enhanced magnetic resonance (MR) imaging, the enhancement pattern of the sagittal section of the median nerve in 10 wrists of nine patients with CTS (two men and seven women, aged 43-60 years [mea...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.190.2.8284400
更新日期:1994-02-01 00:00:00
abstract:PURPOSE:To determine the feasibility of measuring choline and glycogen concentrations in normal human liver in vivo with proton (hydrogen 1 [1H]) magnetic resonance (MR) spectroscopy. MATERIALS AND METHODS:Signed consent to participate in an institutional review board-approved and HIPAA-compliant study was obtained fr...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.12112344
更新日期:2012-11-01 00:00:00