Abstract:
:Experimental pulmonary arteritis was produced in rabbits by intravenous injection of alveolar macrophages from donor rabbits. These animals, along with matched controls, were studied with pulmonary angiography to test the hypothesis that angiography could detect the vasculitic process in life. The animals were then sacrificed and postmortem angiography and histologic studies of the fixed inflated lung were used to locate the vascular lesions. The authors conclude that pulmonary vasculitis can be detected by angiography when the chest x-ray is normal.
journal_name
Invest Radioljournal_title
Investigative radiologyauthors
Hicken P,Hogg JC,Pare PDdoi
10.1097/00004424-198007000-00005subject
Has Abstractpub_date
1980-07-01 00:00:00pages
299-307issue
4eissn
0020-9996issn
1536-0210journal_volume
15pub_type
杂志文章abstract:OBJECTIVE:Though functional intravascular parameters such as blood velocity and direction of blood flow are available via imaging modalities such as Doppler ultrasound and phase contrast magnetic resonance imaging, such quantitative information is not yet supported by computed tomography (CT). In this study, we examine...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0b013e3181ea3588
更新日期:2010-12-01 00:00:00
abstract:OBJECTIVES:Comparison of intravenous Fenestra VC-enhanced computed tomography (CT) with gadopentetate dimeglumine and Ferucarbotran contrast-enhanced magnetic resonance imaging (MRI) for the in vivo imaging of hepatic ischemia/reperfusion injury (IRI) in a murine model. MATERIAL AND METHODS:After induction of hepatic ...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0b013e318155aa2e
更新日期:2008-02-01 00:00:00
abstract:PURPOSE:To evaluate the technical feasibility of high spatial resolution contrast-enhanced magnetic resonance angiography (CE-MRA) with highly accelerated parallel acquisition at 3.0 T using a 32-channel phased array coil, and a high relaxivity contrast agent. MATERIALS AND METHODS:Ten adult healthy volunteers (5 men,...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/01.rli.0000261937.77365.6a
更新日期:2007-06-01 00:00:00
abstract::An ultrasound phantom was constructed simulating fetal femurs in amniotic fluid. Bones of 26, 36, 50, 58, and 70 mm, representative of gestational ages ranging from 17 to 36 weeks, were scanned with mechanical sector, phased sector, and linear array systems (ATL, Diasonics, Acuson, and GE). Measurements were made with...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-198505000-00016
更新日期:1985-05-01 00:00:00
abstract::Surgical resection is the standard of care for colorectal metastases isolated to the liver. However, only 10-25% of the patients are eligible for resection because of extent and location of the disease in the liver or concurrent medical conditions. Image-guided radiofrequency (RF) ablation is a minimally invasive tech...
journal_title:Investigative radiology
pub_type: 杂志文章,评审
doi:10.1097/00004424-200411000-00007
更新日期:2004-11-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:The authors investigated whether the ability of human malignant melanoma cells to increase in cell number or their ability to remain viable was compromised by high-field strength static magnetic fields. Normal human fibroblasts also were studied to determine if any magnetic field-related altera...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199210000-00014
更新日期:1992-10-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to evaluate the feasibility of a computed tomography (CT) protocol enabling the visualization of the prostatic artery (PA) before prostatic artery embolization (PAE) in benign prostatic hyperplasia, which provides quantitative perfusion information of the prostate gland. MATERIALS ...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0000000000000582
更新日期:2019-10-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:To evaluate different vein graft-coated stent systems in the endovascular treatment of experimental arteriovenous fistulae (AVF) in a canine model. METHODS:Bilateral carotid-to-external jugular vein AVF were created. Two balloon-expandable tantalum stents (Strecker stent), two self-expanding n...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199901000-00004
更新日期:1999-01-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:Density of trabecular bone structures in human heel bones was assessed by 3D magnetic resonance (MR) gradient echo imaging (GEI) with multiple echoes. Different spatial resolutions were applied to investigate the influence of the pixel size on signal characteristics in GEI and to find suitable ...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-200007000-00001
更新日期:2000-07-01 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
abstract:RATIONALE AND OBJECTIVES:The aim of the study was to determine optimal thresholds for semiquantitative perfusion parameters and to evaluate the influence of different segmentation models in detecting malperfused regions. MATERIAL AND METHODS:In 6 healthy subjects and 13 patients with coronary artery disease, contrast-...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/01.rli.0000133816.83192.38
更新日期:2004-09-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to investigate the impact on metal artifacts and dose efficiency of using a tin filter in combination with high-energy threshold (TH) images of a photon-counting detector (PCD) computed tomography (CT) system. MATERIALS AND METHODS:A 3D-printed spine with pedicle screws was scanned...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0000000000000535
更新日期:2019-04-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:Magnetic resonance imaging (MRI) techniques seem to be very promising for 3D dosimetry studies, but long imaging acquisition time limits their use. A new fast T1 mapping protocol, easy to implement on a conventional MR imager, has been used to determine dose distributions on Fricke gels. METHO...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199903000-00014
更新日期:1999-03-01 00:00:00
abstract::Over the past 120 years, continuous developments in medical imaging has improved diagnosis and treatment for many diseases and has thereby improved treatment outcome and quality of life of many patients. The number of computed tomography (CT) examinations is today increasing by 4% per year worldwide, for a total of ap...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0000000000000696
更新日期:2020-09-01 00:00:00
abstract::Intravenous or intra-aortic injections of meglumine iothalamate in dogs indicate a slightly different tissue distribution and excretory pattern of the meglumine cation and the iothalamate anion. Differences in serum and urinary concentrations of these ions suggest some cellular penetration of the meglumine anion. In a...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-197507000-00004
更新日期:1975-07-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:To investigate the capacity of manganese dipyridoxyl diphosphate (MnDPDP)-enhanced magnetic resonance imaging (MRI) to discriminate the injured myocardium from the normal myocardium in a cat model. MATERIALS AND METHODS:Fourteen cats were prepared for acute myocardial infarction with 90-minute...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:
更新日期:2005-01-01 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::Even though we have made much progress over the last decade, much still needs to be done. I am personally very pleased with the excellent management and authority of my coauthor, Joe Frank, in assuming the Acting Directorship of our DRRP. You will be hearing more from him in the immediate future about this research pr...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199304001-00014
更新日期:1993-04-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:The authors evaluate the use of a new device for interventional creation of atrial septal defects (ASD) working with high-frequency alternating current in an in vitro study with porcine atria. METHODS:The device consists of a symmetrical cage of six superelastic monofile wires, including a mic...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199702000-00003
更新日期:1997-02-01 00:00:00
abstract::In order to measure the accuracy of a diagnostic imaging technique, the correctness of each observer decision must be determined. This is often difficult in clinical cases, and various strategies are frequently used to approximate the truth. Experiments using chest radiographs as an example are reported to show the pi...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-198303000-00018
更新日期:1983-03-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:The authors conduct technical feasibility and performance studies on a new 0.009-inch nitinol microguidewire for potential neuroendovascular applications. METHODS:In vivo microcatheterizations of brachiocephalic arteries were performed in four pigs using the 0.009-inch nitinol microguidewire w...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199704000-00008
更新日期:1997-04-01 00:00:00
abstract::The cerebrovascular toxicity of three water-soluble contrast agents with a low hypertonicity (metrizamide, ioxaglate, iopamidol) was tested. Blood-brain barrier damage after carotid injection was assessed using 32P autoradiography and fluorescent microscopy after Evans blue staining. The damage to carotid endothelium ...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-198011001-00058
更新日期:1980-11-01 00:00:00
abstract:PURPOSE:To evaluate the diagnostic performance of 1.0-M gadobutrol-enhanced, 3-dimensional (3D), dynamic MR images with 3D-MR cholangiography (MRC) in the preoperative evaluation of bile duct cancer staging and resectability. MATERIALS AND METHODS:Our institutional review board approved this retrospective study. Sixty...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0b013e3181d2eeb1
更新日期:2010-04-01 00:00:00
abstract::The authors evaluated double-blind comparative and open-label clinical trials in 1,186 patients who received ioversol to evaluate the safety and efficacy of ioversol, a new nonionic low-osmolality contrast medium, at iodine concentrations of 32%, 24%, and 16%. The results indicate that ioversol was well tolerated in a...
journal_title:Investigative radiology
pub_type: 临床试验,杂志文章
doi:10.1097/00004424-198906001-00020
更新日期:1989-06-01 00:00:00
abstract::Virtually all receiver operating characteristic (ROC) studies of medical imaging methods have involved data collected on a discrete confidence-rating scale, though in principle ROC studies can be conducted with either discrete or continuous scales. Continuous scales provide potential advantages in medical applications...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199202000-00016
更新日期:1992-02-01 00:00:00
abstract:OBJECTIVE:Dynamic ventilation (3)He-MRI is a new method to assess pulmonary gas inflow. As differing airway diameters throughout the ventilatory cycle can influence gas inflow this study intends to investigate the influence of volume and timing of a He gas bolus with respect to the beginning of the tidal volume on insp...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0b013e3181690111
更新日期:2008-06-01 00:00:00
abstract::Because of a need to correlate pulmonary microvascular changes with physiologic data during lung injury, in vitro and in vivo pulmonary capillary microangiography was performed on normal dogs and those subjected to oleic acid injury and glass bead microembolization. During these studies, no significant differences wer...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:
更新日期:1983-01-01 00:00:00
abstract::This paper presents a microcomputer-based technique that accurately quantifies volumes from computed tomographic (CT) scans of irregularly shaped objects as well as displaying 3-D reconstructions. The method uses standard CT film, allowing analysis of previous or outside CT studies. The planimetry method showed less t...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-198812000-00001
更新日期:1988-12-01 00:00:00
abstract:OBJECTIVES:The purposes of this study were to evaluate the reference range of quantitative computed tomography (QCT) measures of lung attenuation and airway parameter measurements in healthy nonsmoking adults and to identify sources of variation in those measures and possible means to adjust for them. MATERIALS AND ME...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0b013e318262292e
更新日期:2012-10-01 00:00:00
abstract:PURPOSE:The aim of this study was to evaluate the diagnostic performance of virtual noncalcium (VNCa) dual-energy computed tomography (DECT) reconstructions enabling visualization of bone marrow edema for characterization of incidental thoracolumbar compression fractures in routine thoracoabdominal staging computed tom...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0000000000000458
更新日期:2018-07-01 00:00:00