Abstract:
:The feasibility of control of traumatic hepatic hemorrhage by angiographic transcatheter embolization was investigated. Bleeding sites were created in the livers of each of twelve dogs, and the hepatic artery was occluded with Gelfoam. Successful control of bleeding was demonstrated by postembolization angiography in all twelve animals. Initial elevations in alkaline phosphatase and serum glutamic pyruvic transaminase values returned to their baseline in four weeks. Recanalization of the hepatic artery in the five surviving animals was shown by follow-up angiograms. Transcatheter embolic control of traumatic hepatic hemorrhage may be a useful adjunct to surgical therapy.
journal_name
Invest Radioljournal_title
Investigative radiologyauthors
Tyler T,Rosenbaum HDdoi
10.1097/00004424-197801000-00014subject
Has Abstractpub_date
1978-01-01 00:00:00pages
71-3issue
1eissn
0020-9996issn
1536-0210journal_volume
13pub_type
杂志文章abstract:OBJECTIVE:The objective of this study was to determine the gadolinium (Gd) concentration remaining in human bone tissue after administration of standard clinical doses of 2 Gd-based contrast agents: ProHance and Omniscan. MATERIALS AND METHODS:After administration of 0.1 mmol/kg of Gd chelate to patients undergoing hi...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/01.rli.0000186569.32408.95
更新日期:2006-03-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:To assess the potential of magnetic resonance imaging (MRI) for evaluating the evolution of tumor necrosis, the authors evaluated 28 VX2 carcinomas inoculated in the thigh muscles of rabbits. METHODS:MRI of VX2 carcinomas at 2.0 T was done with spin-echo technique 1 week (14 tumors) and 3 week...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199301000-00010
更新日期:1993-01-01 00:00:00
abstract::Prior to the formation of an intravenous digital subtraction angiography (IV-DSA) image, contrast medium passes through the lesser circulation and is diluted by the blood volume of the heart and lungs. If the contrast medium alone influences central blood volume or cardiac output, the shape of the resultant time-conce...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-198603000-00009
更新日期:1986-03-01 00:00:00
abstract::Electromagnetic flow measurement study was performed in 20 anesthetized dogs to evaluate the effect of selective celiac infusion of vasopressin on the hepatic arterial vasculature. Teh hepatic arterial flow showed a biphasic response with an initial decrease followed by a substantial increase in spite of a continued ...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:
更新日期:1975-05-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:In contrast-enhanced dual-energy subtraction imaging 2 images acquired postcontrast media administration at different energies are subtracted to highlight structures hidden in the absence of contrast media. X-ray spectra of the newly developed digital full-field mammography units (GE Senographe...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/01.RLI.0000077124.24140.bd
更新日期:2003-09-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:Dynamic contrast enhanced (DCE) MR mammography (MRM) uses tumor capillary density differences for prognosis. The heterogeneous response of permeability-surface area products (PS = Kp<-->t) was examined in mammary tumors, as a function of contrast agent size, to determine what effect ROI size mi...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-200204000-00003
更新日期:2002-04-01 00:00:00
abstract:OBJECTIVE:With the introduction of ultrashort echo time (UTE) sequences solid polymeric materials might become visible on clinical whole-body magnetic resonance (MR) scanners. The aim of this study was to characterize solid polymeric materials typically used for instruments in magnetic resonance guided interventions an...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0b013e318188601f
更新日期:2008-11-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:The authors detect activation in the auditory cortex during cochlear electrical stimulation in deaf patients using functional magnetic resonance (MR) imaging. METHODS:Stimulating electrode was inserted gently under local anesthesia close to the round window membrane of the cochlea in seven coc...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199705000-00007
更新日期:1997-05-01 00:00:00
abstract::The Point Spread Function (PSF) in NMR imaging is the result of both the line broadening due to magnet field inhomogeneity and the intrinsic spectrum of the nucleus at resonance. In the case of proton imaging, the line broadening dominates the small chemical shifts and the spectral lines are not resolved. This is not ...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-198503000-00016
更新日期:1985-03-01 00:00:00
abstract::Breast calcification diagnosis was studied by using clinical findings and computerized image processing of a mammogram in a network of trained expert learning systems (Outcome Advisor [OA]). The system was tested with records not used for training and performance was compared with radiologist. The network was 72% accu...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199106000-00004
更新日期:1991-06-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:The purpose of the study was to evaluate the effect of articular fluid distention on patellar position at different degrees of knee angulation. METHODS:Patellar position in 10 cadaveric knee specimens was determined with 30, 100, and 200 mm Hg joint distention at 45, 20, and 5 degrees of knee ...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199602000-00001
更新日期:1996-02-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:At many institutions, three-dimensional magnetic resonance imaging (MRI) is routinely used for examination of the knee. Multiplanar reconstruction (MPR) is a method of displaying three-dimensional datasets. The authors assessed the usefulness of MPR for evaluating knee MRI datasets by comparing...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199302000-00011
更新日期:1993-02-01 00:00:00
abstract::Frequency spectral analysis of cardiac wall motion as calculated from the recorded video kymogram are demonstrated. Characteristic harmonics following the fundamental frequency of the cardiac rate have been demonstrated to have an alternating sequential energy distribution as measured from the free margin of the left ...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-197503000-00005
更新日期:1975-03-01 00:00:00
abstract:OBJECTIVES:To evaluate the performance of black-blood diffusion-weighted (DW)-EPI sequences with parallel imaging for the detection of focal liver lesions in comparison with a standard T2-weighted (T2-w) sequence. MATERIALS AND METHODS:Twenty patients with known or suspected focal liver lesions underwent liver MRI usi...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0b013e31816200b5
更新日期:2008-04-01 00:00:00
abstract::Simultaneous inflation of two balloons may be necessary for balloon dilation valvuloplasty in patients with a large annulus. We examined the cardiovascular effects of dilating the pulmonary annulus with two balloons in 18 normal dogs using pulsed Doppler ultrasound and gross and microscopic examination. When the ratio...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-198808000-00005
更新日期:1988-08-01 00:00:00
abstract::Gastrografin and Amipaque with identical iodine content and flavoring were orally administered in 100 ml doses to 10 healthy volunteers in a double-blind crossover study. The nonionic Amipaque has only about one third of the osmolality of Gastrografin, and draws less fluid into the bowel lumen. Consequently there is l...
journal_title:Investigative radiology
pub_type: 临床试验,杂志文章
doi:10.1097/00004424-197811000-00008
更新日期:1978-11-01 00:00:00
abstract:OBJECTIVES:The aims of this study were to assess the discriminative performance of quantitative multiparametric magnetic resonance imaging (mpMRI) between prostate cancer and noncancer tissues and between tumor grade groups (GGs) in a multicenter, single-vendor study, and to investigate to what extent site-specific dif...
journal_title:Investigative radiology
pub_type: 杂志文章,多中心研究
doi:10.1097/RLI.0000000000000558
更新日期:2019-07-01 00:00:00
abstract::The extent to which various concentrations of the paramagnetic metal ions [gadolinium (III), manganese (II), chromium (III), iron (III), nickel (II), copper (II), and cobalt (II)] affect proton magnetic relaxation times of distilled water, 4% human serum albumin (HSA), and dog plasma was studied in vitro. The pH of wa...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-198602000-00009
更新日期:1986-02-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:The purpose of this study was to determine whether cerebral fat embolism demonstrated reversible or irreversible findings in magnetic resonance (MR) imaging over time and to compare the features in MR images with histologic findings in a cat model. MATERIALS AND METHODS:MR images were obtained...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/01.rli.0000077055.48406.e2
更新日期:2003-10-01 00:00:00
abstract::Chest radiographs are commonly obtained to assess children for bronchiolitis, both to corroborate the diagnosis and to exclude other diagnostic possibilities. Their utility in this setting has not previously been examined. Using a blinded, randomized study design, we examined the interobserver and intraobserver variat...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199102000-00004
更新日期:1991-02-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:Low-field magnetic resonance imaging (MRI) evaluation of breast implants is described, with emphasis on the capabilities provided by different imaging sequences. METHODS:Open architecture MR images using a .064-T permanent magnet and three-dimensional Fourier transform and inversion recovery s...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199408000-00009
更新日期:1994-08-01 00:00:00
abstract::Screening chronic hemodialysis patients (CHD) for acquired cystic disease of the kidneys (ACDK) and its complications (hemorrhage and neoplasm) has become accepted management. We evaluated patients on CHD as well as patients on chronic peritoneal dialysis (CPD) for ACDK. The kidneys of 80 chronic dialysis patients wer...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:
更新日期:1987-09-01 00:00:00
abstract:PURPOSE:To determine whether liver metastases conspicuity is improved at 80 kVp when compared with weighted average (WA) simulated 120 kVp data using dual source dual energy CT. METHODS:A total of 11 patients with 44 hypo-vascular liver metastases underwent contrast enhanced Dual Energy CT (DECT). In all cases the sub...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0b013e3181dfda78
更新日期:2010-07-01 00:00:00
abstract::The residency program at the University of Pennsylvania offers a 1-month fellowship for senior residents in medical student education. Instructional philosophy, methods, and content are discussed, observed, practiced, and evaluated. Close supervision and immediate feedback provide training particularly needed by futur...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199006000-00028
更新日期:1990-06-01 00:00:00
abstract:OBJECTIVES:Over the recent years, there have been increasing concerns that exposure to gadolinium-based contrast agents (GBCAs) may be associated with retention of Gd within the skin, bones, and solid organs in patients with normal renal function, although the clinical implications of this deposition remain to be estab...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0000000000000657
更新日期:2020-07-01 00:00:00
abstract::Radiolabeled ioversol was injected intravenously into two male and two female beagle dogs (6.7 to 10.4 kg) at two dose levels each (0.2 and 1.0 g I/kg). Blood levels of radioactivity were monitored at 2, 5, 10, 20, 40, 60, 90, and 120 minutes and at one and two days. Urine and feces were collected in metabolism cages ...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-198906001-00005
更新日期:1989-06-01 00:00:00
abstract::A method is presented for selective catheterization and filming of the small internal spermatic and proper hepatic arteries in rabbits. The angiograms thus obtained afford clear delineation of the vessels and their branches and can enhance radiographic investigation of a variety of experimental disease models. ...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-197705000-00009
更新日期:1977-05-01 00:00:00
abstract:OBJECTIVE:The aim of the study was to assess the value of in vivo T2 measurements to noninvasively quantify myocardial fibrosis in diabetic mice at 11.75 T. Diabetic cardiomyopathy is characterized by extracellular matrix alteration and microcirculation impairment. These conditions might provide electrical heterogeneit...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0b013e318243e062
更新日期:2012-05-01 00:00:00
abstract::Due to the nature of three-dimensional Fourier transform (3-DFT) data acquisition in magnetic resonance imaging (MRI), the spatial relation between a resolved volume element (a voxel) and the object can be manipulated easily. Those manipulations have practical consequences in terms of registering slice positions with ...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199012000-00006
更新日期:1990-12-01 00:00:00
abstract::The use of microbubble contrast agents for general tissue delineation and perfusion enjoys steady interest in ultrasound imaging. Microbubbles as contrast materials require a small dosage and show excellent detection sensitivity. Targeting ligands on the surface of microbubbles permit the selective accumulation of the...
journal_title:Investigative radiology
pub_type: 杂志文章,评审
doi:10.1097/01.rli.0000199292.88189.0f
更新日期:2006-03-01 00:00:00