Cerebral computed tomography angiography using a low tube voltage (80 kVp) and a moderate concentration of iodine contrast material: a quantitative and qualitative comparison with conventional computed tomography angiography.

abstract：:Proton magnetic resonance (MR) spectroscopy with homonuclear editing was used to assess lactate accumulation in ischemic and anoxic hearts perfused according to the Langendorff method. An increase in the lactate signal was observed after 5 minutes of ischemia and after 10 to 20 minutes of anoxia. This study demonstrat...

journal_title：Investigative radiology

authors： Richards TL,Terrier F,Sievers RE,Lipton MJ,Moseley ME,Higgins CB

更新日期：1987-08-01 00:00:00

abstract：:We developed a new, cineangiographic method to accurately measure the dynamic changes in the internal diameter of human arteries in vivo. Cine films were digitized at a spatial resolution of 4 microns/pixel, using a line image sensor. The vessel edges, with a Gaussian fit to a unilateral profile curve of the vessel, w...

journal_title：Investigative radiology

authors： Sugahara T,Yanagihara Y,Uyama C,Maeda H,Takafuchi M,Azumi T

更新日期：1989-09-01 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：OBJECTIVE:The aim of this study was to compare power versus manual injection in bolus shape and image quality on contrast-enhanced magnetic resonance angiography (CE-MRA). MATERIALS AND METHODS:Three types of CE-MRA (head-neck 3-dimensional [3D] MRA with a test-bolus technique, thoracic-abdominal 3D MRA with a bolus-t...

journal_title：Investigative radiology

authors： Tsuboyama T,Jost G,Pietsch H,Tomiyama N

更新日期：2017-09-01 00:00:00

abstract：PURPOSE:The aim was to investigate the feasibility and image quality of prospective respiratory gating for 3-D computed tomography (CT) of the lung. MATERIAL AND METHODS:Eight anesthetized pigs underwent prospectively gated multidetector computed tomography using 2 devices: a charge-coupled device (CCD) camera and a l...

journal_title：Investigative radiology

authors： Zaporozhan J,Ley S,Unterhinninghofen R,Saito Y,Fabel-Schulte M,Keller S,Szabo G,Kauczor HU

更新日期：2006-05-01 00:00:00

abstract：RATIONAL AND OBJECTIVES:The feasibility of tubal occlusion by selective salpingography was tested in an animal model; three novel occluding materials also were tested for this application. METHODS:Unilateral selective salpingography was performed in three groups of six rabbits; fallopian tubes were embolized with etha...

journal_title：Investigative radiology

authors： Maubon A,Rouanet JP,Laurent A,Joujoux JM,Cover S,Courtieu C,Wassef M,Godlewski G,Honiger J,Lopez FM

更新日期：1994-02-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The vasoconstriction of the renal arteries is frequently considered as a crucial factor for radiocontrast-induced nephropathy. A direct effect of iodinated radiographic contrast medium (RCM) on vascular smooth muscle is supposed to be one component of the vascular response. We studied the effec...

journal_title：Investigative radiology

authors： Uder M,Humke U,Pahl M,Jansen A,Utz J,Kramann B

更新日期：2002-08-01 00:00:00

abstract：OBJECTIVES:Volumetric magnetic resonance (MR)-guided high-intensity focused ultrasound (HIFU) is a completely noninvasive image-guided thermal ablation technique. Recently, there has been growing interest in the use of MR-HIFU for noninvasive ablation of malignant tumors. Of particular interest for noninvasive ablation...

journal_title：Investigative radiology

authors： Wijlemans JW,Deckers R,van den Bosch MA,Seinstra BA,van Stralen M,van Diest PJ,Moonen CT,Bartels LW

更新日期：2013-06-01 00:00:00

abstract：:Perfluoroctylbromide (PFOB), a radiopaque reticuloendothelial system contrast media for computed tomography, has been shown to accumulate in macrophages. In the current study PFOB was tested in rabbits as an abscess imaging agent. Two abscesses were induced in each of 24 rabbits, one in the liver and the other in the ...

journal_title：Investigative radiology

authors： Mattrey RF,Andrè M,Campbell J,Mitten R,Multer F,Hackney D,Long DM,Higgins CB

更新日期：1984-09-01 00:00:00

abstract：OBJECTIVE:This study aims for targeted biopsy validation of magnetic resonance fingerprinting (MRF) and diffusion mapping for characterizing peripheral zone (PZ) prostate cancer and noncancers. MATERIALS AND METHODS:One hundred four PZ lesions in 85 patients who underwent magnetic resonance imaging were retrospectivel...

journal_title：Investigative radiology

authors： Panda A,OʼConnor G,Lo WC,Jiang Y,Margevicius S,Schluchter M,Ponsky LE,Gulani V

更新日期：2019-08-01 00:00:00

abstract：OBJECTIVES:The aims of this study were to implement and systematically evaluate the performance of a new parameter-free segmented algorithm for analysis of diffusion imaging data using a combined intravoxel incoherent motion and diffusion kurtosis imaging (IVIM-DKI) model of spin diffusion in comparison with the simple...

journal_title：Investigative radiology

authors： Wurnig MC,Kenkel D,Filli L,Boss A

更新日期：2016-03-01 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

authors： Lawaczeck R,Diekmann F,Diekmann S,Hamm B,Bick U,Press WR,Schirmer H,Schön K,Weinmann HJ

更新日期：2003-09-01 00:00:00

abstract：PURPOSE:The aim of this study was to develop a method to delineate the lethally frozen-tissue region (temperature less than -40°C) arising from interventional cryoablation procedures using a short tau inversion-recovery ultrashort echo-time (STIR-UTE) magnetic resonance (MR) imaging sequence. This method could serve as...

journal_title：Investigative radiology

authors： Tokuda J,Wang Q,Tuncali K,Seethamraju RT,Tempany CM,Schmidt EJ

更新日期：2020-05-01 00:00:00

abstract：OBJECTIVES:The purpose of this study was to assess whether the recently developed method of grating-based x-ray dark-field radiography can improve the diagnosis of pulmonary emphysema in vivo. MATERIALS AND METHODS:Pulmonary emphysema was induced in female C57BL/6N mice using endotracheal instillation of porcine pancr...

journal_title：Investigative radiology

authors： Meinel FG,Yaroshenko A,Hellbach K,Bech M,Müller M,Velroyen A,Bamberg F,Eickelberg O,Nikolaou K,Reiser MF,Pfeiffer F,Yildirim AÖ

更新日期：2014-10-01 00:00:00

abstract：OBJECTIVE:The objective of this study was to evaluate a high spatial resolution 3-dimensional (3D) contrast-enhanced magnetic resonance (CE-MR) venography protocol for evaluation of intracranial venous system using highly accelerated parallel imaging at 3.0 T. MATERIALS AND METHODS:Ten patients (4 male, 6 female; age,...

journal_title：Investigative radiology

authors： Nael K,Fenchel M,Salamon N,Duckwiler GR,Laub G,Finn JP,Villablanca JP

更新日期：2006-10-01 00:00:00

abstract：OBJECTIVES:The aim of this study was to achieve initial experience with non-contrast-enhanced (ne) magnetic resonance angiography (MRA) of the lower leg arteries in patients with peripheral arterial occlusive disease (PAOD) at 7 T. MATERIALS AND METHODS:Seven patients with PAOD were examined on a 7-T whole-body magnet...

journal_title：Investigative radiology

authors： Fischer A,Maderwald S,Johst S,Orzada S,Ladd ME,Umutlu L,Lauenstein TC,Kniemeyer HW,Nassenstein K

更新日期：2014-05-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To summarize the chemical synthesis, physicochemical characterization, pharmacokinetic behavior, and biological evaluation of P743, a new macromolecular iodinated contrast medium. METHODS:The synthesis and molecular modeling of the iodinated macromolecule P743 are described. The pharmacokineti...

journal_title：Investigative radiology

authors： Idée JM,Port M,Robert P,Raynal I,Prigent P,Dencausse A,Le Greneur S,Tichkowsky I,Le Lem G,Bourrinet P,Mugel T,Benderbous S,Devoldere L,Bourbouze R,Meyer D,Bonnemain B,Corot C

更新日期：2001-01-01 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：:Using a 1.5 T magnetic resonance imaging (MRI) system, cine phase-contrast and magnitude images were obtained in three phantoms that simulated different anatomic configurations of aortic dissection. The dissection phantoms were made of compliant materials, and pulsatile flow was used in all experiments. Phantoms diffe...

journal_title：Investigative radiology

authors： Iwai F,Sostman HD,Evans AJ,Nadel SN,Hedlund LW,Beam CA,Charles HC,Spritzer CE

更新日期：1991-12-01 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

authors： Gast KK,Hawig K,Windirsch M,Markstaller K,Schreiber WG,Schmiedeskamp J,Düber C,Kauczor HU,Heussel CP

更新日期：2008-06-01 00:00:00

abstract：OBJECTIVES:: To evaluate the performance of a gadolinium-based contrast compound (P846) as well as an ultra-small particle of iron oxide agent (P904) in contrast-enhanced magnetic resonance angiography (MRA) in rabbits and to compare those agents with gadoterate meglumine (Gd-DOTA) for first pass and steady state imagi...

journal_title：Investigative radiology

authors： Kinner S,Maderwald S,Parohl N,Albert J,Corot C,Robert P,Barkhausen J,Vogt FM

更新日期：2011-08-01 00:00:00

abstract：:Video dilution technique (VDT) is currently performed in conjunction with routine cerebral angiography to determine carotid blood flow in humans. Preliminary results indicate that the blood flows (as a percentage of cardial output) of the common, internal, and external carotid arteries are 8.5%, 5.5%, and 3.0%, respec...

journal_title：Investigative radiology

authors： Lantz BM,Dublin AB,McGahan JP,Link DP

更新日期：1981-05-01 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

authors： Ryoo I,Lee JM,Chung YE,Park HS,Kim SH,Han JK,Choi BI

更新日期：2010-04-01 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

authors： Inoue E,Kuroda C,Narumi Y,Fujita M,Kadota T,Kuriyama K,Yoshioka H,Ishiguro S,Sasaki Y,Imaoka S

更新日期：1993-08-01 00:00:00

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

authors： Schöber W,Wiskirchen J,Kehlbach R,Gebert R,Rodegerdts E,Betsch A,Johst U,Feuls R,Claussen CD,Duda SD

更新日期：2002-05-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:This study was conducted to determine whether significant reduction in radiation dose (250 mAs-->50 mAs), in chest computed tomography (CT) using volume acquisition affects image quality or the detectability of pathologic findings in the lung and mediastinum. METHODS:Phantom studies were condu...

journal_title：Investigative radiology

authors： Takahashi M,Maguire WM,Ashtari M,Khan A,Papp Z,Alberico R,Campbell W,Eacobacci T,Herman PG

更新日期：1998-02-01 00:00:00

abstract：OBJECTIVE:The purpose of this study was to assess the effects of gadolinium (Gd3+), provided as gadolinium chloride, on fibroblast function. MATERIALS AND METHODS:Human dermal fibroblasts in monolayer culture and intact skin in organ culture were exposed to the lanthanide metal (1-20 μM). RESULTS:Increased proliferat...

journal_title：Investigative radiology

authors： Bhagavathula N,Dame MK,DaSilva M,Jenkins W,Aslam MN,Perone P,Varani J

更新日期：2010-12-01 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

authors： Kim H,Yoon SH,Lee HJ,Song SG,Koh J,Jeon YK,Chae KJ,Jin GY,Jin KN,Lee KY,Goo JM

更新日期：2020-06-01 00:00:00

abstract：:"Satisfaction of search" (SOS) refers to the effect in which a second lesion remains undetected after detection of another lesion on the same radiograph. The objective of this study was to clarify our understanding of SOS by relating it to total time of inspection and time intervals before, between, and after discover...

journal_title：Investigative radiology

authors： Berbaum KS,Franken EA Jr,Dorfman DD,Rooholamini SA,Coffman CE,Cornell SH,Cragg AH,Galvin JR,Honda H,Kao SC

更新日期：1991-07-01 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