Differentiation of delayed kidney graft function with gadolinium-DTPA-enhanced magnetic resonance imaging and Doppler ultrasound.

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

authors： Miyazawa T,Murayama C,Yamanaka T,Fritz-Zieroth B

更新日期：1993-09-01 00:00:00

abstract：:Attenuation correction (AC) is an essential step in the positron emission tomography (PET) data reconstruction process to provide accurate and quantitative PET images. The introduction of PET/magnetic resonance (MR) hybrid systems has raised new challenges but also possibilities regarding PET AC. While in PET/computed...

journal_title：Investigative radiology

authors： Paulus DH,Quick HH

更新日期：2016-10-01 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

authors： Burbank FH,Thompson WM

更新日期：1986-03-01 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

authors： Albright RE Jr,Fram EK

更新日期：1988-12-01 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

authors： Rockette HE,Gur D,Metz CE

更新日期：1992-02-01 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：RATIONALE AND OBJECTIVES:The authors evaluate the use of magnetic resonance (MR) to image pulmonary perfusion in healthy controls and to detect pulmonary defects in patients with unilateral lung transplantation, using dynamic images after contrast administration. METHODS:Five patients with right lung transplantation a...

journal_title：Investigative radiology

authors： Berthezène Y,Croisille P,Bertocchi M,Houzard C,Bendib K,Revel D

更新日期：1997-06-01 00:00:00

abstract：:The density of trabecular bone in the os calcis has been measured in 321 subjects using a gamma ray scattering technique. In normal subjects it was shown that density could be predicted from body weight and age with a standard error of 5.6%. It was also shown that the dependence of density upon weight and age was the ...

journal_title：Investigative radiology

authors： Roberts JG,DiTomasso E,Webber CE

更新日期：1982-01-01 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：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

authors： Zech CJ,Herrmann KA,Dietrich O,Horger W,Reiser MF,Schoenberg SO

更新日期：2008-04-01 00:00:00

abstract：:In this article, we propose a semiautomatic method for time-continuous contour detection in all phases of the cardiac cycle in magnetic resonance sequences. The method is based on multidimensional dynamic programming. After shape parameterization, cost hypercubes are filled with image-feature derived cost function val...

journal_title：Investigative radiology

authors： Uzümcü M,van der Geest RJ,Swingen C,Reiber JH,Lelieveldt BP

更新日期：2006-01-01 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

authors： Schneider M,Arditi M,Barrau MB,Brochot J,Broillet A,Ventrone R,Yan F

更新日期：1995-08-01 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

authors： Gay SB,Chen NC,Burch JJ,Gleason TR,Sagman AM

更新日期：1993-02-01 00:00:00

abstract：:Three methods are presented which provide statistically acceptable estimates of mean transit time of opacified blood during angiography. While the methods vary in precision, the selection of the method appropriate for any particular experimental model depends on the degree of precision required to demonstrate the effe...

journal_title：Investigative radiology

authors： Silverman NR,Rosen L

更新日期：1977-07-01 00:00:00

abstract：:An agent has been identified in lymph from rat kidneys rendered ischemic by partial renal artery occlusion that induces a striking neovascular response in a hamster cheek-pouch assay system. The factor has a high molecular weight, cannot be identified in lymph from normal kidneys, and is associated with a marked incre...

journal_title：Investigative radiology

authors： Hollenberg NK,Paskins-Hurlburt AJ,Abrams HL

更新日期：1985-01-01 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：: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

authors： Herzog RJ,Nelson JA,Staubus AE

更新日期：1976-01-01 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

authors： Bidgood WD Jr,Cuttino JT Jr,Clark RL,Volberg FM

更新日期：1981-01-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Laser-induced interstitial thermotherapy (LITT) may become an attractive modality for minimally invasive tumor therapy. Magnetic resonance imaging (MRI) could be used to assist this procedure. METHODS:A T1-weighted turbo fast low-angle shot (FLASH) sequence for on-line monitoring of the laser-...

journal_title：Investigative radiology

authors： Gewiese B,Beuthan J,Fobbe F,Stiller D,Müller G,Böse-Landgraf J,Wolf KJ,Deimling M

更新日期：1994-03-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To analyze changes in Doppler ultrasound variables of the portal vein in relation to liver biopsy findings, the authors performed a prospective study of 316 Doppler ultrasound examinations in the first 2 weeks after orthotopic liver transplantation on 23 patients. METHODS:Recordings were obtai...

journal_title：Investigative radiology

authors： Kok T,Slooff MJ,Peeters PM,Zwaveling JH,Bijleveld CM,Gi-van Loon CE,Klompmaker IJ,Haagsma EB

更新日期：1996-12-01 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

authors： Fischer A,Kraff O,Orzada S,Nensa F,Schäfer LC,Ladd ME,Umutlu L,Lauenstein TC

更新日期：2014-05-01 00:00:00

abstract：OBJECTIVES:Magnetic resonance imaging guidance has been sporadically reported for renal tumor cryoablation (CA); therefore, clinical experience with this modality is still limited.The aim of this study is to retrospectively analyze our 10-year experience with renal tumor CA performed on a 1.5 T magnetic resonance imagi...

journal_title：Investigative radiology

authors： Cazzato RL,De Marini P,Leonard-Lorant I,Leclerc L,Auloge P,Tricard T,Dalili D,Garnon J,Lang H,Gangi A

更新日期：2020-09-04 00:00:00

abstract：:We compared the damage resulting from intradermal injection of four commonly used radiographic contrast media in laboratory rats. Sixty percent meglumine diatrizoate (Reno M 60) and ioxaglate (Hexabrix) produced significantly more ulceration and crusting on gross inspection and more necrosis, edema, and hemorrhage on ...

journal_title：Investigative radiology

authors： Cohan RH,Leder RA,Bolick D,Herzberg AJ,Hedlund LW,Wheeler CT,Helms MJ,Dunnick NR

更新日期：1990-05-01 00:00:00

abstract：:The effect of three iodinated contrast media (CM) on human plasma butyrylcholinesterase (BuChE) activity was studied during the intravenous pyelography (i.v.P). BuChE is an enzyme that participates in the metabolism of acetylcholine and hydrolyzes food esters and drugs such as nondepolarizing muscle relaxants and loca...

journal_title：Investigative radiology

authors： Mironidou M,Ximitidou O,Christopoulos S,Kokkas B

更新日期：1998-05-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Two independent gold standards and diagnoses from three-dimensional computed tomography (CT) images were used to examine the possibility that craniosynostosis is a binary abnormality that potentially may be diagnosed without error. METHODS:Surgical reports, histology of excised sutures, and th...

journal_title：Investigative radiology

authors： Pilgram TK,Vannier MW,Marsh JL,Kraemer BB,Rayne SC,Gado MH,Moran CJ,McAlister WH,Shackelford GD,Hardesty RA

更新日期：1994-10-01 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

authors： Zach JA,Newell JD Jr,Schroeder J,Murphy JR,Curran-Everett D,Hoffman EA,Westgate PM,Han MK,Silverman EK,Crapo JD,Lynch DA,COPDGene Investigators.

更新日期：2012-10-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Gd-DTPA is a well-characterized, safe contrast agent frequently used in magnetic resonance imaging (MRI) of the central nervous system. The purpose of this double-blind, comparative MRI study of brain, spine, trunk, and limbs was to evaluate the safety and efficacy of Gd-DOTA versus Gd-DTPA in ...

journal_title：Investigative radiology

authors： Oudkerk M,Sijens PE,Van Beek EJ,Kuijpers TJ

更新日期：1995-02-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To evaluate the use of a new thrombus-specific ultrasound contrast agent, MRX-408, in the ultrasonic detection of thrombus in arteriovenous (AV) fistulae. METHODS:Six purpose-bred mongrels with two AV fistulae each were imaged with gray-scale ultrasound 7 weeks after graft implantation before ...

journal_title：Investigative radiology

authors： Unger E,Metzger P 3rd,Krupinski E,Baker M,Hulett R,Gabaeff D,Mills J,Ihnat D,McCreery T

更新日期：2000-01-01 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：:In vitro incompatibilities between nine water-soluble contrast media and 21 intravascular pharmacologic agents were investigated using naked-eye observation and a centrifuge. Most of the previously reported incompatibilities were verified, and a few new incompatibilities were discovered: phentolamine mesylate with dia...

journal_title：Investigative radiology

authors： Kim SH,Lee HK,Han MC

更新日期：1992-01-01 00:00:00