Validation of ultrafast computed tomographic left ventricular volume measurement.

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:To evaluate the imaging characteristics of various iliac artery stents and stent-grafts in a multislice, computed tomography angiography (MSCTA) phantom study. METHODS:Twelve types of stents and three stent-grafts made of different materials (steel, nitinol, tantalum, cobalt-based alloy) were ...

journal_title：Investigative radiology

authors： Maintz D,Fischbach R,Juergens KU,Allkemper T,Wessling J,Heindel W

更新日期：2001-12-01 00:00:00

abstract：:Percutaneous injection of absolute ethanol into adenocarcinomas implanted in the hind leg of rats was evaluated as a potential cancer treatment. Intramuscular alcohol injections up to 10 mL/kg produced a local dose-dependent coagulation necrosis followed by granulation tissue formation and subsequent fibrosis but no a...

journal_title：Investigative radiology

authors： Burgener FA,Steinmetz SD

更新日期：1987-06-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The authors conduct technical feasibility and performance studies on a new 0.009-inch nitinol microguidewire for potential neuroendovascular applications. METHODS:In vivo microcatheterizations of brachiocephalic arteries were performed in four pigs using the 0.009-inch nitinol microguidewire w...

journal_title：Investigative radiology

authors： Putman CM,Chaloupka JC,Kailasnath P,Alderman J

更新日期：1997-04-01 00:00:00

abstract：:Observer performance in radiologic interpretation has traditionally been based upon Receiver Operating Characteristic (ROC) analysis. A statistical method that evaluates the reproducibility or consistency of radiologic interpretation is presented. Since this method is not based upon pathologic verification, it cannot ...

journal_title：Investigative radiology

authors： Herman S,DeBoer G,Rideout DF,Majesky IF

更新日期：1984-11-01 00:00:00

abstract：OBJECTIVES:To prospectively evaluate the image quality and diagnostic accuracy of magnetic resonance cholangiopancreatography (MRCP) at 3.0 T compared with that at 1.5 T used for patients. MATERIALS AND METHODS:This study was approved by our institutional review board, and informed consent was obtained from all patien...

journal_title：Investigative radiology

authors： Onishi H,Kim T,Hori M,Murakami T,Tatsumi M,Nakaya Y,Nakamoto A,Osuga K,Tomoda K,Nakamura H

更新日期：2009-09-01 00:00:00

abstract：:The magnitude and timing of the effects of postural change on pulmonary blood flow distribution were studied in dogs by means of computed tomography (CT) and radioactive microspheres. A change in the mean attenuation values was demonstrated by CT in the anterior and posterior lung zones after change from the supine to...

journal_title：Investigative radiology

authors： Kuribayashi S,Garnic JD,Abrams HL

更新日期：1982-11-01 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：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：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：:We evaluated the incidence of ventricular fibrillation with low-osmolality contrast media by right coronary arteriography in eleven adult mongrel dogs. Following insertion of the catheter into the right coronary artery, a test solution was infused for 25 seconds (total 11 mL) or until fibrillation occurred. The test s...

journal_title：Investigative radiology

authors： Hayakawa K,Yamashita K

更新日期：1989-04-01 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：: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: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:: 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：:Gallbladder sclerotherapy after permanent cystic duct occlusion, to prevent gallstone recurrence in nonsurgical gallstone therapy, is at least a two-stage procedure. A balloon catheter was developed to perform gallbladder sclerotherapy with only temporary occlusion of the cystic duct, and the efficacy and safety of th...

journal_title：Investigative radiology

authors： Brakel K,Laméris JS,Vergunst H,Ten Kate FJ,Nijs HG,Terpstra OT

更新日期：1991-09-01 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：RATIONALE AND OBJECTIVES:A computerized system that applies the case-based approach to training radiologists to diagnose brain tumors was designed. The authors attempted to provide residents a tool that supports their visual memory and inducts case-based reasoning. METHODS:A relational database with a digital image li...

journal_title：Investigative radiology

authors： Macura RT,Macura KJ,Toro VE,Binet EF,Trueblood JH,Ji K

更新日期：1994-04-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To develop a new animal model for the evaluation of the renal tolerance of contrast agent and its application to diatrizoate and iotrolan injections in comparison to saline and mannitol solution. MATERIALS AND METHODS:The nephrotoxic potential of intravenously injected contrast agents in Beagl...

journal_title：Investigative radiology

authors： Krause W,Gilles T

更新日期：2003-11-01 00:00:00

abstract：OBJECTIVE:To investigate three-echo T2*-corrected Dixon magnetic resonance imaging (MRI) for noninvasively estimating hepatic fat content (HFC) compared with biopsy. MATERIALS AND METHODS:One hundred patients (50 men, 50 women; mean age, 57.7±14.2 years) underwent clinically indicated liver core biopsy (102 valid tiss...

journal_title：Investigative radiology

authors： Kühn JP,Evert M,Friedrich N,Kannengiesser S,Mayerle J,Thiel R,Lerch MM,Dombrowski F,Mensel B,Hosten N,Puls R

更新日期：2011-12-01 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：:A method of teaching radiology residents by identification of general and specific objectives to be accomplished during each time segment of the four-year training program has been developed. The objectives are incorporated into an educational contract that is signed by the resident and rotation director at the beginn...

journal_title：Investigative radiology

authors： Howland WJ,Marler D,Bosshart D

更新日期：1986-12-01 00:00:00

abstract：:Advances in the field of magnetic resonance (MR) as it pertains to clinical diagnostic radiology are examined in this review on the basis of publications in Investigative Radiology over the past 2 years (2005-2006). The articles published during that timeframe are discussed, organizationally wise, by anatomic region w...

journal_title：Investigative radiology

authors： Runge VM

更新日期：2006-12-01 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：OBJECTIVES:The aim of this study was to assess quantitative ultra-high b-value (UHB) diffusion magnetic resonance imaging (MRI)-derived parameters in comparison to standard clinical apparent diffusion coefficient (SD-ADC-2b-1000, SD-ADC-2b-1500) for the prediction of clinically significant prostate cancer, defined as G...

journal_title：Investigative radiology

authors： Tavakoli AA,Kuder TA,Tichy D,Radtke JP,Görtz M,Schütz V,Stenzinger A,Hohenfellner M,Schlemmer HP,Bonekamp D

更新日期：2021-02-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:It is widely believed that down-sizing catheters, and possibly needles, will decrease damage to the entry vessel in the performance of angiography. The purposes of this in vitro experiment are to determine if smaller needles produce less arterial wall damage than larger needles and to assess th...

journal_title：Investigative radiology

authors： Smith DC,Hamlin JA,Jensen DA,Pappas JM,Westengard JC,Saukel GW

更新日期：1992-10-01 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：:The morphologic changes in healthy rat kidneys (n = 102) were studied 2 or 48 hours after intravenous injection of 1 or 3 g iodine (I)/kg of high-osmolality diatrizoate, low-osmolality iopromide and iohexol, or iso-osmolality iotrolan, as well as after 0.2 or 0.6 g/kg of the high-osmolality magnetic resonance contrast...

journal_title：Investigative radiology

authors： Tervahartiala P,Kivisaari L,Kivisaari R,Virtanen I,Standertskjöld-Nordenstam CG

更新日期：1991-10-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:The aim of the study was to determine optimal thresholds for semiquantitative perfusion parameters and to evaluate the influence of different segmentation models in detecting malperfused regions. MATERIAL AND METHODS:In 6 healthy subjects and 13 patients with coronary artery disease, contrast-...

journal_title：Investigative radiology

authors： Fenchel M,Kramer U,Helber U,Stauder NI,Franow A,Claussen CD,Miller S

更新日期：2004-09-01 00:00:00

abstract：RATIONALE AND OBJECTIVES:To develop a simple and robust helium3 polarization system dedicated to small animal imaging. To demonstrate the potential of helium3 imaging for pulmonary ventilation and perfusion studies. METHODS:A home-built polarization system based on spin-exchange technique was used. This system was app...

journal_title：Investigative radiology

authors： Stupar V,Berthezène Y,Canet E,Tournier H,Dupuich D,Crémillieux Y

更新日期：2003-06-01 00:00:00