Osteosarcoma of the nude rat. A model for experimental magnetic resonance imaging studies of bone tumors.

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：OBJECTIVES:The aim of this study was to investigate the feasibility of kidney stone composition analysis using spectral detector computed tomography scanner (SDCT) with normal- and low-dose imaging protocols. METHODS:A total of 154 stones harvested from nephrolithotripsy or nephrolithotomy with a known monocrystalline...

journal_title：Investigative radiology

authors： Große Hokamp N,Salem J,Hesse A,Holz JA,Ritter M,Heidenreich A,Maintz D,Haneder S

更新日期：2018-08-01 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：:"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：OBJECTIVES:The aim of this study was to quantify image quality gains of a moving coronary plaque phantom using dual-source computed tomography (DSCT) providing 83 milliseconds temporal resolution in direct comparison to 64 slice single-source multidetector CT (MDCT) with a temporal resolution of 165 milliseconds. MATE...

journal_title：Investigative radiology

authors： Reimann AJ,Rinck D,Birinci-Aydogan A,Scheuering M,Burgstahler C,Schroeder S,Brodoefel H,Tsiflikas I,Herberts T,Flohr T,Claussen CD,Kopp AF,Heuschmid M

更新日期：2007-03-01 00:00:00

abstract：:Compounds containing mobile protons can act as contrast agents by increasing the value of the term (1/12 - 1/11). The efficiency of this method is markedly pH- and field-dependent. There are many such compounds allowing a choice to be made based on the characteristics of the tissue or organ, magnetic field strength, a...

journal_title：Investigative radiology

authors： Aime S,Nano R,Grandi M

更新日期：1988-09-01 00:00:00

abstract：OBJECTIVE:: This feasibility study was performed to assess whether dynamic contrast-enhanced ultrasound (CEUS) and transient arterial occlusion are able to detect alterations in the microvascular perfusion and arterial perfusion reserve in patients suffering from peripheral arterial disease (PAD) in comparison with hea...

journal_title：Investigative radiology

authors： Amarteifio E,Weber MA,Wormsbecher S,Demirel S,Krakowski-Roosen H,Jöres A,Braun S,Delorme S,Böckler D,Kauczor HU,Krix M

更新日期：2011-08-01 00:00:00

abstract：OBJECTIVE:To demonstrate a method of assessing radiologic diagnostic agreement utilizing multiple blinded external readers. METHODS:Six body CT studies interpreted by one reader (primary reader) at the host institution were compiled with patient identifiers removed. Brief clinical histories that were available to the ...

journal_title：Investigative radiology

authors： Ryan AF,Semelka RC,Molina PL,Yonkers S,Vaidean G

更新日期：2010-04-01 00:00:00

abstract：:Surgical resection is the standard of care for colorectal metastases isolated to the liver. However, only 10-25% of the patients are eligible for resection because of extent and location of the disease in the liver or concurrent medical conditions. Image-guided radiofrequency (RF) ablation is a minimally invasive tech...

journal_title：Investigative radiology

authors： Lencioni R,Crocetti L,Cioni D,Della Pina C,Bartolozzi C

更新日期：2004-11-01 00:00:00

abstract：OBJECTIVES:The purpose of this study was to develop and validate a computer-aided diagnosis (CAD) tool for automatic classification of pulmonary nodules seen on low-dose computed tomography into solid, part-solid, and non-solid. MATERIALS AND METHODS:Study lesions were randomly selected from 2 sites participating in t...

journal_title：Investigative radiology

authors： Jacobs C,van Rikxoort EM,Scholten ET,de Jong PA,Prokop M,Schaefer-Prokop C,van Ginneken B

更新日期：2015-03-01 00:00:00

abstract：OBJECTIVES:Demonstrate the usability of a new polyetheretherketone (PEEK)-based MR-compatible guidewire for renal artery catheterization, angioplasty, and stenting under MR-guidance using MR-visible markers, in vitro and in vivo. MATERIAL AND METHODS:The new 0.035'' guidewire with fiber-reinforced PEEK core, a soft ti...

journal_title：Investigative radiology

authors： Kos S,Huegli R,Hofmann E,Quick HH,Kuehl H,Aker S,Kaiser GM,Borm PJ,Jacob AL,Bilecen D

更新日期：2009-04-01 00:00:00

abstract：:The study aim was to define potential differences and advantages in magnetic resonance (MR) patterns of tumoral contrast enhancement using either a small molecular, extracellular fluid contrast enhancer [Gd-DTPA] or a macromolecular agent [albumin-(Gd-DTPA)20], designed for primary intravascular biodistribution. MR im...

journal_title：Investigative radiology

authors： Wikström MG,Moseley ME,White DL,Dupon JW,Winkelhake JL,Kopplin J,Brasch RC

更新日期：1989-08-01 00:00:00

abstract：PURPOSE:To determine the reproducibility, accuracy, and predictors of accuracy of computed tomography (CT) angiography to detect and characterize coronary atherosclerotic plaque as compared with intravascular ultrasound. METHODS:Ten ex vivo human coronary arteries were imaged in a moving phantom by dual-source CT (col...

journal_title：Investigative radiology

authors： van der Giessen AG,Toepker MH,Donelly PM,Bamberg F,Schlett CL,Raffle C,Irlbeck T,Lee H,van Walsum T,Maurovich-Horvat P,Gijsen FJ,Wentzel JJ,Hoffmann U

更新日期：2010-11-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The authors determine the relative effect of soft-tissue compartments, body fat (percent [%Bfat] and weight [Bfat kg]) and fat-free mass (FFM kg), on measurements of ultrasound bone velocity (UBV m/second). METHODS:The authors measured UBV in proximal phalanxes and body fat and fat-free mass b...

journal_title：Investigative radiology

authors： Gómez M,Aguado F,Manuel J,Menéndez JM,Revilla M,Villa LF,Cortés J,Rico H

更新日期：1997-10-01 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：OBJECTIVES:The aim of this study was to investigate the impact on metal artifacts and dose efficiency of using a tin filter in combination with high-energy threshold (TH) images of a photon-counting detector (PCD) computed tomography (CT) system. MATERIALS AND METHODS:A 3D-printed spine with pedicle screws was scanned...

journal_title：Investigative radiology

authors： Zhou W,Bartlett DJ,Diehn FE,Glazebrook KN,Kotsenas AL,Carter RE,Fletcher JG,McCollough CH,Leng S

更新日期：2019-04-01 00:00:00

abstract：:A technique to measure absolute arterial blood flow in ml/min has been developed utilizing software programs with high-speed digital recording for the off-line analysis of intra-arterial injections of contrast medium. Measurements of pulsatile flow in a phantom for a physical flow model showed that calculations with t...

journal_title：Investigative radiology

authors： Forbes G,Gray JE,Felmlee JP

更新日期：1985-03-01 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：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：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

authors： Segers J,Le Duc G,Laumonier C,Troprès I,Elst LV,Muller RN

更新日期：2005-09-01 00:00:00

abstract：:High-resolution real-time ultrasonography (5, 7.5, and 10 MHz) was used to examine the menisci of the knee in ten normal volunteers and in ten patients with knee injuries. The posterior horns of the medial and lateral menisci were easily demonstrated. Normal anatomy and pathologic changes could be imaged in the menisc...

journal_title：Investigative radiology

authors： Selby B,Richardson ML,Montana MA,Teitz CC,Larson RV,Mack LA

更新日期：1986-04-01 00:00:00

abstract：:Fractures modeled in the dried skull indicate that the initial plane of computed tomography (CT) section contributes to the accuracy of three-dimensional (3D) images generated from two-dimensional (2D) CT data. The authors retrospectively analyzed seven clinical cases of tripod zygomatic fractures that were imaged wit...

journal_title：Investigative radiology

authors： Levy RA,Kellman RM,Rosenbaum AE

更新日期：1991-05-01 00:00:00

abstract：OBJECTIVES:The aim of this study was to evaluate the effect of structured reports (SRs) in comparison to nonstructured, free-text (FT) rectal magnetic resonance imaging (MRI) reports in patients with histologically proven rectal cancer and potential effects of both types of reporting on referring surgeons' satisfaction...

journal_title：Investigative radiology

authors： Nörenberg D,Sommer WH,Thasler W,DʼHaese J,Rentsch M,Kolben T,Schreyer A,Rist C,Reiser M,Armbruster M

更新日期：2017-04-01 00:00:00

abstract：OBJECTIVE:The purpose of this study was to assess the diagnostic value and safety of the contrast agent gadoterate meglumine (Gd-DOTA, DOTAREM, Guerbet, Roissy CdG Cedex, France) in the setting of a postmarketing surveillance study. MATERIALS AND METHODS:Between January 2004 and October 2005, radiologists in 61 radiol...

journal_title：Investigative radiology

authors： Herborn CU,Honold E,Wolf M,Kemper J,Kinner S,Adam G,Barkhausen J

更新日期：2007-01-01 00:00:00

abstract：:Thirty patients [four normals, eight with mild and 18 with severe coronary artery disease (CAD)] were studied to evaluate left ventricular function type and post coronary angiography. The end diastolic volume (EDV), end systolic volume (ESV), ejection fraction (EF) and the regional contractility fractions (RCF) of eig...

journal_title：Investigative radiology

authors： Sos TA,Baltaxe HA

更新日期：1976-03-01 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：INTRODUCTION:Attenuation correction for magnetic resonance (MR) coils is a new challenge that came about with the development of combined MR and positron emission tomography (PET) imaging. This task is difficult because such coils are not directly visible on either PET or MR acquisitions with current combined scanners ...

journal_title：Investigative radiology

authors： Eldib M,Bini J,Calcagno C,Robson PM,Mani V,Fayad ZA

更新日期：2014-02-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The vascular opacification characteristics of a new nonionic, dimeric contrast agent, iodixanol, have been compared with a nonionic, monomeric agent, iohexol, using ultrafast computed tomography (UFCT). METHODS:In 10 experiments with mongrel dogs, the contrast agents were alternately injected ...

journal_title：Investigative radiology

authors： Gould R,Brasch RC,Sievers R,Baxter A,Aicher K

更新日期：1992-12-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To investigate image mottle in conventional CT images of the abdomen as a function of radiographic technique factors and patient size. METHODS:Water-filled phantoms simulating the abdomens of adult (32 cm in diameter) and pediatric (16 cm in diameter) patients were used to investigate image mo...

journal_title：Investigative radiology

authors： Ende JF,Huda W,Ros PR,Litwiller AL

更新日期：1999-04-01 00:00:00

abstract：:A radiographic method for use in the closed-chest dog is described which allows the quantitation of segmental mechanical performance. Previous work has shown that the area of the pressure-length loop (an approximation of a stress-strain integral) is a useful measure of the mechanical work performed by a segment of myo...

journal_title：Investigative radiology

authors： Ringertz HG,Carlsson E,Tyberg JV

更新日期：1976-11-01 00:00:00