A closed-chest pulmonary artery occlusion/reperfusion model in the pig: detection of experimental pulmonary embolism with MR angiography and perfusion MR imaging.

abstract：RATIONALE AND OBJECTIVES:Validation of new positron emission tomography (PET) tracers or magnetic (MR) imaging contrast agents is based on isolated rodent heart preparations. The use of larger animals could provide a more direct validation using the devices used for humans. METHODS:An isolated pig heart preparation ha...

journal_title：Investigative radiology

authors： Casali C,Obadia JF,Canet E,Bendjelid K,André-Fouët X,Revel D,Janier MF

更新日期：1997-11-01 00:00:00

abstract：OBJECTIVES:The aim of this study was to investigate the impact of impaired renal function on gadolinium (Gd) retention in various organs after Gd-based contrast agent injection. MATERIALS AND METHODS:After local animal care and review committee approval, 23 normal mice and 26 with renal failure were divided into 4 tre...

journal_title：Investigative radiology

authors： Kartamihardja AA,Nakajima T,Kameo S,Koyama H,Tsushima Y

更新日期：2016-10-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To compare the diagnostic efficacy of a standard dose of MRI contrast agent in the evaluation of primary brain tumors and metastases using a high-field 3 tesla MR unit versus a 1.5 tesla MR unit. METHODS:Sixteen patients with brain tumors were examined at both field strengths using identical a...

journal_title：Investigative radiology

authors： Nöbauer-Huhmann IM,Ba-Ssalamah A,Mlynarik V,Barth M,Schöggl A,Heimberger K,Matula C,Fog A,Kaider A,Trattnig S

更新日期：2002-03-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Measurements of segmental contraction of the left ventricle by standard magnetic resonance imaging (MRI) and two-dimensional echocardiography involve the comparison of diastolic and systolic time frames acquired from the same imaging plane in space. As the cone-shaped left ventricle shortens al...

journal_title：Investigative radiology

authors： Pattynama PM,Doornbos J,Hermans J,van der Wall EE,de Roos A

更新日期：1992-09-01 00:00:00

abstract：:The last two decades have witnessed tremendous strides in the evolution of acceptable and successful methods of prosthetic replacement for the arthritic joint. By and large, these techniques are predictable and durable, though not always to the complete satisfaction of the patient and surgeon. Despite the recent empha...

journal_title：Investigative radiology

authors： Volz RG,Benjamin JB

更新日期：1990-01-01 00:00:00

abstract：OBJECTIVES:To prospectively evaluate accuracy of biliary anatomy depiction and quality of biliary tract visualization of magnetic resonance cholangiography (MRC) at 3.0 T in living potential liver donors (LPLDs). MATERIALS AND METHODS:Our institutional review board approved this study and did not require patient's inf...

journal_title：Investigative radiology

authors： Kim SY,Byun JH,Hong HS,Choi EK,Lee SS,Park SH,Lee MG

更新日期：2008-08-01 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：OBJECTIVES:In late December 2019, an outbreak of coronavirus disease (COVID-19) in Wuhan, China was caused by a novel coronavirus, newly named severe acute respiratory syndrome coronavirus 2. We aimed to quantify the severity of COVID-19 infection on high-resolution chest computed tomography (CT) and to determine its r...

journal_title：Investigative radiology

authors： Xiong Y,Sun D,Liu Y,Fan Y,Zhao L,Li X,Zhu W

更新日期：2020-06-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:As part of a general examination of the effect of blood flow patterns on the growth and risk of rupture of abdominal aortic aneurysms, the authors investigated the flow through an experimental model of a fusiform aneurysm. MATERIALS AND METHODS:Aneurysms were simulated in polyvinyl chloride tu...

journal_title：Investigative radiology

authors： Schrader T,Peattie RA,Bluth EI,Comstock CE

更新日期：1992-07-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Our purpose was to validate contrast-enhanced computed tomography (CECT)-derived quantitative measures of perfusion and permeability against gold standard techniques of fluorescent microspheres and Evan's Blue dye, respectively. MATERIALS AND METHODS:Normal and tumor-bearing (R3230AC) Fischer ...

journal_title：Investigative radiology

authors： Pollard RE,Garcia TC,Stieger SM,Ferrara KW,Sadlowski AR,Wisner ER

更新日期：2004-06-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The author analyzes findings of consistency of rotator-cuff calcifications found at ultrasound (US)-guided needle treatment compared with findings of plain radiography, US, and computed tomography (CT). METHODS:Twenty patients had rotator-cuff calcifications (mean diameter, 1.5 cm; range, 1.1-...

journal_title：Investigative radiology

authors： Farin PU

更新日期：1996-05-01 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：:The biliary and urinary excretion of sodium tyropanoate (Bilopaque) and sodium ipodate (Oragrafin) were studied in unanesthetized bile-fistula dogs using stepwise, increasing, intravenous infusions of the contrast materials. A constant intravenous infusion of sodium taurocholate was administered at the rate of either ...

journal_title：Investigative radiology

authors： Berk RN,Loeb PM,Cobo-Frenkel A,Barnhart JL

更新日期：1977-01-01 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：: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

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：OBJECTIVES:The aims of this study were to investigate and validate quantitative susceptibility mapping (QSM) for lesional iron quantification in cerebral cavernous malformations (CCMs). MATERIALS AND METHODS:Magnetic resonance imaging studies were performed in phantoms and 16 patients on a 3-T scanner. Susceptibility ...

journal_title：Investigative radiology

authors： Tan H,Liu T,Wu Y,Thacker J,Shenkar R,Mikati AG,Shi C,Dykstra C,Wang Y,Prasad PV,Edelman RR,Awad IA

更新日期：2014-07-01 00:00:00

abstract：:Renal arteriography gives a reliable anatomic delineation of the renal vasculature. However, the presence of renal arterial disease does not determine the physiologic significance of the lesion. The intravenous infusion of saralasin, a specific angiotensin II antagonist, has been investigated as a method for identify...

journal_title：Investigative radiology

authors： Tegtmeyer CJ,Latour EA,Vaughan ED Jr,Ayers CR,Carey RM,Wellons HA Jr

更新日期：1977-11-01 00:00:00

abstract：OBJECTIVES:The aims of this study were to assess the discriminative performance of quantitative multiparametric magnetic resonance imaging (mpMRI) between prostate cancer and noncancer tissues and between tumor grade groups (GGs) in a multicenter, single-vendor study, and to investigate to what extent site-specific dif...

journal_title：Investigative radiology

authors： Maas MC,Litjens GJS,Wright AJ,Attenberger UI,Haider MA,Helbich TH,Kiefer B,Macura KJ,Margolis DJA,Padhani AR,Selnæs KM,Villeirs GM,Fütterer JJ,Scheenen TWJ

更新日期：2019-07-01 00:00:00

abstract：:Magnetic resonance spectroscopy (MRS) has been most extensively applied to the study of animal models and not humans. The major reason for this extensive animal research is due to the nature of the early magnetic resonance high-field magnets, which only permitted the study of isolated cells, tissues, or small animals....

journal_title：Investigative radiology

authors： Balaban RS

更新日期：1989-12-01 00:00:00

abstract：:The microangiographic anatomy of the cat's eye is presented. The characteristic vascular pattern of each of the three distinct circulations, retinal choroidal, and ciliary is described and illustrated. ...

journal_title：Investigative radiology

authors： Rothman SL,Kier EL,Deuker DK

更新日期：1975-01-01 00:00:00

abstract：OBJECTIVE:The aim of this study was to optimize computed tomography (CT) surveillance of skeletal metastases in patients with breast cancer through the use of osseous subtraction maps between baseline and follow-up examinations created by a novel software algorithm. The new postprocessing algorithm segments the origina...

journal_title：Investigative radiology

authors： Horger M,Thaiss WM,Wiesinger B,Ditt H,Fritz J,Nikolaou K,Kloth C

更新日期：2017-02-01 00:00:00

abstract：:Although general suggestions have been made regarding a radiology residency curriculum, no specific list of entities has been offered. Over the past ten years, we have developed a resident-run morning conference in musculoskeletal radiology that is supervised by faculty and covers a specific curriculum. We offer our c...

journal_title：Investigative radiology

authors： Renfrew DL,el-Khoury GY,Moore TE,Kathol MH,Whitten CG,Walker CW,Fraser-Hill MA

更新日期：1991-11-01 00:00:00

abstract：OBJECTIVE:We aimed to assess whether migraine is associated with changes in the distribution of the venous drainage through primary and secondary pathways by using phase-contrast magnetic resonance imaging (MRI). METHODS:We examined 26 patients (37.3 ± 13.9 years) with recurring migraine headaches and 26 age- and gend...

journal_title：Investigative radiology

authors： Koerte IK,Schankin CJ,Immler S,Lee S,Laubender RP,Grosse C,Eftimov L,Milde-Busch A,Reiser M,Straube A,Heinen F,Alperin N,Ertl-Wagner B

更新日期：2011-07-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:Studies describing the effects of radiographic contrast media (RCM) in leukocyte chemotaxis have been contradictory. No studies have been performed after in-vivo exposure. The authors assess the effect of RCM on leukocytes following in-vivo exposure. METHODS:Seventeen patients were studied aft...

journal_title：Investigative radiology

authors： Roobottom CA,Farrow R,Wells IP,Hurlock-Fimls N

更新日期：1994-01-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To test noninvasive inductive heating of implanted vascular stents as an alternative approach for reduction or prevention of neointimal hyperplasia. METHODS:Calorimetric pretests were performed to get an orientation on the different parameters of influence for inductive heating of stents. The ...

journal_title：Investigative radiology

authors： Floren MG,Günther RW,Schmitz-Rode T

更新日期：2004-05-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The objective is to assess the diagnostic accuracy and interobserver variability of multiphase 3D gadolinium-enhanced magnetic resonance angiography (3D-Gd-MRA) for assessment of abdominal and pelvic vascular disease. METHODS:In 41 patients from two different institutions multiphase 3D-Gd-MRA ...

journal_title：Investigative radiology

authors： Schoenberg SO,Essig M,Hallscheidt P,Sharafuddin MJ,Stolpen AH,Knopp MV,Yuh WT

更新日期：2002-01-01 00:00:00

abstract：:This article reviews the computer system hardware and software, applications programs, and computer network services that are available on microcomputers for use by the radiologist. The American College of Radiology Institute computer network is described, which is specifically designed to help the practicing radiolog...

journal_title：Investigative radiology

authors： Newell JD,Hunter TB

更新日期：1986-02-01 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:This study sought to evaluate prospectively the diagnostic potential of unenhanced and enhanced color Doppler and power Doppler for the differentiation of tumors and tumorlike lesions of the breast. METHODS:Ninety-two patients with 110 tumors or tumorlike lesions of the breast were investigate...

journal_title：Investigative radiology

authors： Schroeder RJ,Maeurer J,Vogl TJ,Hidajat N,Hadijuana J,Venz S,Weber S,Felix R

更新日期：1999-02-01 00:00:00