Estimating digital information throughput rates for radiology networks. A model.

abstract：RATIONALE AND OBJECTIVES:To compare the visibility and localization of extratemporal cortical lesions in extratemporal epilepsy by using curved reconstruction (CR) and three-dimensional surface rendering (3D SR) of 3D-acquired MR images and to study the degree of confidence with which localizations are made, particular...

journal_title：Investigative radiology

authors： Meiners LC,Scheffers JM,De Kort GA,Burger H,Van Huffelen AC,Van Rijen PC,Van Veelen CW

更新日期：2001-04-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Because of the complex relationships between the dynamic three-dimensional cardiac surface shape and its projected image, errors arise with the use of two-dimensional silhouettes to measure displacements of the heart. The character and frequency of such errors are examined. METHODS:A high-prec...

journal_title：Investigative radiology

authors： McInerney JJ,Weldner PW,Herr MD,Copenhaver GL

更新日期：1994-03-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The authors differentiate acute tubular necrosis from transplant rejection in patients with delayed kidney graft function using gadolinium (Gd)-DTPA enhanced magnetic resonance (MR) imaging. METHODS:Twenty-four patients after renal transplantation (10 with normal graft function, 14 with delaye...

journal_title：Investigative radiology

authors： Preidler KW,Szolar D,Schreyer H,Ebner F,Kern R,Holzer H,Horina JH

更新日期：1996-06-01 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

authors： Machann J,Schnatterbeck P,Raible A,Lutz O,Claussen CD,Schick F

更新日期：2000-07-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Indium-111 (111In)-labeled leukocyte scanning has been used frequently in patients suspected of having infections. Recently, technetium-99m hexamethylpropylene amine oxime (99mTc-HMPAO) has been used to label leukocytes. This study was undertaken to determine the distribution and dosimetry of 9...

journal_title：Investigative radiology

authors： Brown ML,Hung JC,Vetter RJ,O'Connor MK,Chowdhury S,Forstrom LA

更新日期：1994-04-01 00:00:00

abstract：:Human gallstones were surgically placed into the gallbladders of 200 swine. Eight of these swine were used as a prospective series to verify that the placement and presence of human gallstones in their gallbladders caused no significant pathologic changes in the gallbladder and that the gallstones were not spontaneous...

journal_title：Investigative radiology

authors： Griffith SL,Burney BT,Fry FJ,Franklin TD Jr

更新日期：1989-02-01 00:00:00

abstract：:The effects of edge gradient and blur on the detection pulmonary nodules were studied, using a test series of 175 artificial nodules on 30 chest films. The nodules were of homogeneous texture, about 1 cm in diameter and had a mean contrast of .12. Six observers viewed the film set, scoring both location and confidence...

journal_title：Investigative radiology

authors： Kundel HL,Revesz G,Toto L

更新日期：1979-01-01 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

authors： Revesz G,Kundel HL,Bonitatibus M

更新日期：1983-03-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Target-specific magnetic resonance (MR) contrast agents are being developed to improve the accuracy of MR imaging. The purpose of this study was to determine the mechanism of cell uptake, and modes of intracellular trafficking of a prototypical iron oxide label (RMA) used in the synthesis of so...

journal_title：Investigative radiology

authors： Schulze E,Ferrucci JT Jr,Poss K,Lapointe L,Bogdanova A,Weissleder R

更新日期：1995-10-01 00:00:00

abstract：:Erythrocytes at various concentrations were examined with a sensitive A-mode ultrasonic scanner; simultaneous measurements were made under light microscopic control. Individual erythrocytes caused weak (about 1 dB) echoes while erythrocyte aggregates (ten to 100 cells) produced stronger echoes (up to 15 dB), grossly p...

journal_title：Investigative radiology

authors： Alanen A,Kormano M

更新日期：1985-08-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The authors studied the effect of contrast dose, use of magnetization transfer (MT), and temporal delay on the visualization of contrast enhancement with gadoteridol (Gd HP-DO3A) in a canine brain abscess model. METHODS:Alpha streptococcus brain abscesses were studied in five dogs at 1.5 tesla...

journal_title：Investigative radiology

authors： Runge VM,Wells JW,Kirsch JE

更新日期：1995-03-01 00:00:00

abstract：:Pyrroxamide [N-(1-hydroxymethyl-2,3-dihydroxypropyl)-2,2,5,5-tetramethyl pyrrolidine-1-oxyl-3-carboxyamide] is a newly tested nonionic monomeric nitroxyl compound with demonstrated effectiveness for MRI contrast enhancement at doses as low as 10(-3) M. Pyrroxamide and its hydroxylamine metabolic derivative were tested...

journal_title：Investigative radiology

authors： Gordon DG,Brasch RC,Ogan MD,Deen D

更新日期：1988-08-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The authors studied the incidence and distribution of orthopedic injuries sustained in Operation Desert Shield and Desert Storm by evaluating whether existing diagnostic imaging modalities were sufficient to diagnose the types of musculoskeletal injuries incurred. The authors also sought to det...

journal_title：Investigative radiology

authors： Truax AL,Chandnani VP,Chacko AK,Gonzalez DM

更新日期：1997-03-01 00:00:00

abstract：OBJECTIVES:The purpose of this study was to assess whether fluorochrome-coupled bacterial magnetic nanoparticles can be used as bimodal contrast agent for both magnetic resonance imaging (MRI) and near-infrared fluorescence optical (NIRF) imaging of cultured macrophages. MATERIALS AND METHODS:Bacterial magnetic nanopa...

journal_title：Investigative radiology

authors： Lisy MR,Hartung A,Lang C,Schüler D,Richter W,Reichenbach JR,Kaiser WA,Hilger I

更新日期：2007-04-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Diabetic patients frequently suffer contrast media-induced nephropathy. Hyperglycemia in diabetes mellitus causes gradual deterioration of glomerular mesangial cells (MCs) in the kidney. In this study, the authors investigated the response of rat MCs cultured in high-glucose medium to diatrizoa...

journal_title：Investigative radiology

authors： Wasaki M,Sugimoto J,Shirota K

更新日期：2001-07-01 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

authors： Troupin RH

更新日期：1990-06-01 00:00:00

abstract：:We studied 60 male patients who had concurrent chest films (CXR), computed tomography scans (CT) and pulmonary function tests (PFT) to assess the sensitivity of CT and conventional films in detecting emphysema compared with PFT. We also sought to determine whether emphysema could be diagnosed by CT in patients with no...

journal_title：Investigative radiology

authors： Sanders C,Nath PH,Bailey WC

更新日期：1988-04-01 00:00:00

abstract：:In vivo and in vitro studies have shown that areas of myocardial infarctions can be delineated on CT scans after intravenous administration of iodinated contrast material to dogs with experimental myocardial infarctions. Within the first minute after intravenous administration of contrast material (initial myocardial ...

journal_title：Investigative radiology

authors： Higgins CB,Siemers PT,Newell JD,Schmidt W

更新日期：1980-11-01 00:00:00

abstract：:Because of relatively low acute toxicity, iosulamide meglumine has been recommended as an improved contrast material for intravenous cholangiography. It has been postulated that high doses of the compound could be given safely with the expectation of achieving greater biliary excretion and improved opacification of th...

journal_title：Investigative radiology

authors： Berk RN,Barnhart JL,Nazareno G,Witt BL

更新日期：1981-05-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To compare electron beam tomography (EBT) with MR imaging (MRI) for detection of restenosis after coronary angioplasty (PTCA). METHODS:One hundred eighteen patients after PTCA were investigated. By EBT, 50 axial images were acquired (3-mm slice thickness, 120-160 mL radiographic contrast agent...

journal_title：Investigative radiology

authors： Ropers D,Regenfus M,Stilianakis N,Birke S,Kessler W,Moshage W,Laub G,Daniel WG,Achenbach S

更新日期：2002-07-01 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

authors： Kim TH,Yang DH,Choi JW,Kim ST,Yoon JH,Shin JH,Seo JB,Gong GY,Lim TH

更新日期：2005-01-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To evaluate the safety and pharmacokinetics of a newly developed MR contrast medium consisting of very small superparamagnetic iron oxide particles (VSOP) coated with citrate (VSOP-C184) in a clinical phase I trial. METHODS:A total of 18 healthy subjects received either VSOP-C184 (core diamete...

journal_title：Investigative radiology

authors： Taupitz M,Wagner S,Schnorr J,Kravec I,Pilgrimm H,Bergmann-Fritsch H,Hamm B

更新日期：2004-07-01 00:00:00

abstract：OBJECTIVE:Hydration is widely accepted as an effective measure to prevent contrast media (CM)-induced acute kidney injury (AKI). Whether bicarbonate (NaHCO₃) infusion has a greater effect than saline is disputed. Effective prevention of CM-induced AKI by NaHCO₃ has been found by several clinical trials. However, others...

journal_title：Investigative radiology

authors： Ladwig M,Flemming B,Seeliger E,Sargsyan L,Persson PB

更新日期：2011-11-01 00:00:00

abstract：:We have examined the metabolic behavior of several triiodobenzoic acid derivatives because of the observed mutagenicity and cytotoxicity of 3-amino-5-acetamido-2,4,6-triiodobenzoate (I) and 3,5-diamino-2,4,6-triiodobenzoate (II). Measurements were facilitated using iodine-131 (131I)-labeled compounds. Drug retention i...

journal_title：Investigative radiology

authors： Weiss R,Hsu B,Wheeler L,Norman A,Riley RF

更新日期：1981-11-01 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

authors： Frankel S,Occhipinti K,Kaufman L,Kramer D,Carlson J,Mineyev M,Friedenthal R

更新日期：1994-08-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:New targeted microbubbles directed to the GPIIb IIIa receptor have been developed. The objective was to determine whether targeting microbubbles to clots would enhance ultrasound imaging. Systematic studies were designed to determine whether in vitro methodology is an acceptable predictor of in...

journal_title：Investigative radiology

authors： Schumann PA,Christiansen JP,Quigley RM,McCreery TP,Sweitzer RH,Unger EC,Lindner JR,Matsunaga TO

更新日期：2002-11-01 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

authors： Klibanov AL

更新日期：2006-03-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To assess the abilities of dynamic diffusion-weighted MRI to demonstrate the effects in vivo of a high-viscosity iodinated contrast agent on medullary and cortical blood flow in the rat kidney. METHODS:Dynamic diffusion-weighted, echoplanar MR images obtained from five b-value single-shot acqu...

journal_title：Investigative radiology

authors： Laissy JP,Menegazzo D,Dumont E,Piekarski JD,Karila-Cohen P,Chillon S,Schouman-Claeys E

更新日期：2000-11-01 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

authors： Patrick EA,Moskowitz M,Mansukhani VT,Gruenstein EI

更新日期：1991-06-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The influence of lipiodol injection on hepatic morphology and function was investigated in 119 rabbits with hepatic VX2 tumors. METHODS:The rabbits were divided into the following three groups, according to the materials injected via the proper hepatic artery: group 1 received doxorubicin (Adr...

journal_title：Investigative radiology

authors： Akashi Y,Koreeda C,Mizuno T,Inoue K,Kawa SK,Tanaka Y

更新日期：1993-02-01 00:00:00