Abstract:
:The developing trend for all medical images to be in digital form raises an important question: should diagnostic interpretations be made directly from a CRT or from some form of hard copy recording of the CRT? This question was studied by having two observers read a series of digital images of the thyroid including both conventional scintigrams and computer-generated tomograms. The CRT images were photographed in a carefully controlled fashion. Images were read once from film and a second time directly from the CRT. No significant difference in performance could be found for either display modality based on an ROC analysis. Although based on uncomplicated images and analysis, this result suggests that the decision to read from film or from the CRT can be made on other grounds than observer performance. This important result needs confirmation with more complex images such as ultrasound or CT.
journal_name
Invest Radioljournal_title
Investigative radiologyauthors
Keyes JW Jr,Kline RC,Resinger WW,Rose EA,Koral KF,Rogers WLdoi
10.1097/00004424-198305000-00015subject
Has Abstractpub_date
1983-05-01 00:00:00pages
298-300issue
3eissn
0020-9996issn
1536-0210journal_volume
18pub_type
杂志文章abstract:RATIONALE AND OBJECTIVES:The aim of the study was to examine the effects of azelastine on proliferation, clonogenic activity, cell-cycle, and migration of human aortic smooth-muscle cells (haSMCs) in vitro. METHODS:HaSMCs were treated for 4 days with azelastine (1 micromol/L, 25 micromol/L, 50 micromol/L). Half of the...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-200205000-00002
更新日期:2002-05-01 00:00:00
abstract:OBJECTIVES:The aim of this work was to quantitatively evaluate the pharmacokinetic pattern of Gd-EOB-DTPA in a model of isolated and perfused mouse liver by using magnetic resonance imaging (MRI) and monochromatic quantitative computed tomography (MQCT). MATERIALS AND METHODS:For MQCT, perfusions were realized with th...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/01.rli.0000174474.43772.58
更新日期:2005-09-01 00:00:00
abstract::Capacity-limited elimination of sodium iopanoate and a reproducible apparent transport maximum (Tm) were demonstrated in nonoperated dogs having an intact enterohepatic circulation and normal endogenous bile salt pool. Using a multiple infusion technique, estimation of apparent Tm of iopanoate in the liver was possibl...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-197601000-00007
更新日期:1976-01-01 00:00:00
abstract:OBJECTIVES:Altered systolic blood flow in the ascending aorta has been correlated with increased aortic growth in patients with bicuspid aortic valves (BAVs). We used conventional, 2-dimensional (2D) phase contrast magnetic resonance imaging (PC-MRI) to assess the relationship between altered flow and future growth in ...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0000000000000064
更新日期:2014-10-01 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:OBJECTIVES:The objective of this study was to evaluate the correlation between dynamic gadoxetic acid-enhanced magnetic resonance imaging parameters and specific uptake values (SUVs) derived from ¹⁸fluorodeoxyglucose (¹⁸F-FDG) and ⁶⁸Ga-DOTA-Tyr(3)-octreotate (⁶⁸Ga-DOTATATE) positron emission tomography/computed tomogra...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0b013e3182a4eb4a
更新日期:2014-01-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:To investigate postmortem metabolic and morphologic alterations in the dog brain thalamus and to contribute diagnostic aids in medicolegal science. METHODS:A homogeneous group of 17 dogs was used for in vivo 1H magnetic resonance (MR) spectroscopy and electron microscopic studies, which were p...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199505000-00001
更新日期:1995-05-01 00:00:00
abstract:OBJECTIVES:The objective of this study was to assess the feasibility of the combination of magnetic resonance (MR)-guided biopsy (MRGB) and diagnostic 3T MR imaging in the localization of local recurrence of prostate cancer (PCa) after external beam radiation therapy (EBRT). MATERIALS AND METHODS:Twenty-four consecuti...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0b013e3181c7bcda
更新日期:2010-03-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:To assess the influence of injection rates and volumes on the arrival time of contrast material (CM) in the common carotid artery, the jugular vein and the resulting arterial-venous transit time. Additionally the relationship between injection parameters and the extent of a CM plateau was evalu...
journal_title:Investigative radiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/01.rli.0000105040.40925.c8
更新日期:2004-02-01 00:00:00
abstract:PURPOSE:We sought to evaluate the potential of dynamic contrast enhancement after the intravenous administration of an iodine-based contrast medium in full-field digital mammography. MATERIAL AND METHODS:A protocol for image acquisition was established for contrast-enhanced mammography and the mammography unit (Senogr...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/01.rli.0000167421.83203.4e
更新日期:2005-07-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:Hypertonic X-ray contrast media induce morphologic changes in red blood cells (RBCs) and reduce their deformability when measured in vitro. This study investigated whether RBCs treated with hypertonic contrast media could induce circulatory as well as metabolic disturbances in vivo. METHODS:Au...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:
更新日期:1993-09-01 00:00:00
abstract::A double-blind randomized study of ten patients compared Hexabrix 32% to Renografin-60 in TMJ arthrography. Equivalent volumes of contrast material were injected under fluoroscopic observation, with film quality and patient subjective response graded independently by three radiologists. In immediate arthrogram quality...
journal_title:Investigative radiology
pub_type: 临床试验,杂志文章
doi:10.1097/00004424-198411001-00032
更新日期:1984-11-01 00:00:00
abstract::Early detection of pancreatic ductal adenocarcinoma (PDAC) represents the most significant step toward the treatment of this aggressive lethal disease. Previously, we engineered a preclinical Thy1-targeted microbubble (MBThy1) contrast agent that specifically recognizes Thy1 antigen overexpressed in the vasculature of...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0000000000000697
更新日期:2020-11-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:The basic characteristics of BR1, a novel echo contrast agent based on stabilized sulfur hexafluoride (SF6) microbubbles have been evaluated. METHODS:The authors determined the physicochemical properties (bubble concentration, bubble size distribution, resistance to pressure, and stability) an...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199508000-00001
更新日期:1995-08-01 00:00:00
abstract::A series of 5-hydroxyacylamino-2,4,6-triiodo-N,N'-hydroxy-alkyl-isophtalamides was prepared in order to study the structural requirements for high water solubility and low toxicity. Among the amides substituted by 2-hydroxyethyl; 2,3-dihydroxypropyl; 1,3-dihydroxypropyl-; and 1,1-dihydroxy-methyl-2-oxyethyl- groups, t...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-198011001-00065
更新日期:1980-11-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:Hepatocellular carcinomas (HCCs) usually consist of components of different histologic grade. Using surgically resected specimens, the authors obtained high-resolution magnetic resonance (MR) images and studied the relationship between histologic grade of HCCs and MR signal intensity. METHOD:I...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199308000-00007
更新日期:1993-08-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to conduct a radiopathologic evaluation of right-angled traction bronchiectasis to differentiate idiopathic pulmonary fibrosis (IPF) without honeycombing from idiopathic nonspecific interstitial pneumonia (NSIP). MATERIALS AND METHODS:The derivation cohort included 78 consecutive p...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0000000000000651
更新日期:2020-06-01 00:00:00
abstract::Pyelovenous and pyelolymphatic backflow have been observed during retrograde pyelography in three patients with renal vein thrombosis. The radiographic patterns of backflow following experimental unilateral renal vein occlusion in rabbits were analyzed and correlated with the clinical findings. Capsular, perihilar, pe...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-198101000-00003
更新日期:1981-01-01 00:00:00
abstract::The hardcopy recording technologies of video cameras, slow-scan (digital spot) recorders, and laser film printers are presented and compared. Slow-scan (digital spot) recorders offer a few advantages when compared with multiformat video cameras. But only laser film printers provide the high-quality hardcopy recordings...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199102000-00017
更新日期:1991-02-01 00:00:00
abstract::There are a number of sonographic findings seen in fibroadenoma of the breast. In a retrospective study, we examined the biopsy results of 59 masses given the sonographic diagnosis of fibroadenoma. We also reviewed the sonograms of an additional 26 biopsy-proven fibroadenomas that were not diagnosed as such with ultra...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-198601000-00006
更新日期:1986-01-01 00:00:00
abstract::Radiation dose in computed tomography (CT) has become a hot topic due to an upward trend in the number of CT procedures worldwide and the relatively high doses associated with these procedures. The main aim of this review article is to provide an overview of the most frequently used metrics for CT radiation dose chara...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0000000000000727
更新日期:2021-01-01 00:00:00
abstract:OBJECTIVE:Commercially available iodinated contrast media (CM) show significantly different physico-chemical properties. The relevance of the viscosity of CM may be underestimated as a contributing factor for clinically relevant renal failure as suggested by a large registry data analysis (Swedish registry study). The ...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0b013e318190fbd2
更新日期:2009-02-01 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::The effects of an intravenously administered nitroxyl spin label (PCA) on the magnetic resonance imaging (MRI) appearance and relaxation times of acute canine myocardial infarctions were studied. Twenty-four hours after ligation of the left anterior descending coronary artery (LAD), animals were either sacrificed imme...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:
更新日期:1985-09-01 00:00:00
abstract:OBJECTIVES:The objectives of this study were to assess the feasibility of magnetic resonance cholangiography (MRC) using biliary-secreted gadoxetic acid at 7 T and to compare it with T2-weighted (w) MRC at 3 T. MATERIALS AND METHODS:Ten healthy volunteers were examined on a 7-T whole-body magnetic resonance system. T2...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0000000000000004
更新日期:2014-05-01 00:00:00
abstract::Because of the strong scientific evidence in support of radiation hormesis, we can no longer ignore this concept. There is, however, need for additional, carefully documented investigations in selected biological systems exposed to LLIR if the matter of radiation hormesis is to be settled once and for all. This need s...
journal_title:Investigative radiology
pub_type: 杂志文章,评审
doi:
更新日期:1993-05-01 00:00:00
abstract:PURPOSE:To evaluate the dependency of tumor contrast enhancement (CE) in regard to protein-binding properties of contrast agents, using 4 different agents with a wide range of protein-binding capacities in a standardized rat brain glioma model. MATERIAL AND METHODS:Sixteen rats with implanted brain gliomas were evalua...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0b013e318191a334
更新日期:2009-02-01 00:00:00
abstract::The authors present a numerical deconvolution technique to compensate for image degrading effects caused by scattered photons in radiographic chest images. Fourier transform techniques are used to deconvolve a shift invariant model of the two dimensional point spread response functions of the scattered radiation. This...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-198901000-00008
更新日期:1989-01-01 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::Radiolabeled blood cells are widely used for both clinical and research studies. In vitro and in vivo studies have shown the tagging process does not significantly affect function. The labeling techniques and clinical uses of labeled leukocytes and platelets are reviewed. ...
journal_title:Investigative radiology
pub_type: 杂志文章,评审
doi:10.1097/00004424-198603000-00001
更新日期:1986-03-01 00:00:00