Effect of electrocardiogram triggering on reproducibility of coronary artery calcium scoring.

abstract：PURPOSE:To evaluate the feasibility of breast computed tomography (CT) in terms of radiation dose and image quality. MATERIALS AND METHODS:Validated Monte Carlo simulation techniques were used to estimate the average glandular dose (AGD). The calculated photon fluence at the detector for high-quality abdominal CT (120...

journal_title：Radiology

authors： Boone JM,Nelson TR,Lindfors KK,Seibert JA

更新日期：2001-12-01 00:00:00

abstract：:The authors present the postoperative angiographic appearance of the revascularized renal artery in 128 patients. The angiographic findings in four types of surgical procedures (saphenous bypass graft, dacron graft, endarterectomy, and reimplantation of the renal artery) are discussed. Postoperative angiography accura...

journal_title：Radiology

authors： Ekelund L,Gerlock J Jr,Goncharenko V,Foster J

更新日期：1978-02-01 00:00:00

abstract：:Microwave radiometry is a passive and noninvasive technique that allows quick detection of subcutaneous temperature changes. The feasibility of this technique for differentiating normal intravenous infusions of radiographic contrast medium from extravasations of contrast medium was tested in anesthetized dogs. Room-te...

journal_title：Radiology

authors： Shaeffer J,Sigfred SV,Sevcik MA,Grabowy RS,Gemmell LA,Hirschman AD

更新日期：1992-07-01 00:00:00

abstract：:The feasibility of using focused ultrasound for studying structures as small as biliary ducts and correlative radiological and ultrasonic studies of the common and larger hepatic ducts are presented. Patients whose bile ducts were visualized on intravenous or T-tube cholangiography or oral cholecystography underwent r...

journal_title：Radiology

authors： Reid MH

更新日期：1976-01-01 00:00:00

abstract：PURPOSE:To evaluate the effectiveness of noninvasive magnetic resonance (MR) imaging-guided focused ultrasonographic (US) ablation of breast carcinomas. MATERIALS AND METHODS:Before undergoing tumor resection, 12 patients with invasive breast carcinomas were treated with MR imaging-guided focused US ablation consistin...

journal_title：Radiology

authors： Gianfelice D,Khiat A,Amara M,Belblidia A,Boulanger Y

更新日期：2003-06-01 00:00:00

abstract：:Purpose To evaluate an objective computed tomographic (CT) criterion for distinguishing between part-solid (PS) and nonsolid (NS) lung nodules. Materials and Methods This study received institutional review board approval, and patients gave informed consent. Preoperative CT studies in all patients who underwent surger...

journal_title：Radiology

authors： Revel MP,Mannes I,Benzakoun J,Guinet C,Léger T,Grenier P,Lupo A,Fournel L,Chassagnon G,Bommart S

更新日期：2018-01-01 00:00:00

abstract：:Twenty-seven patients presented with painful acute scrotal swelling. After a clinical impression was established, all patients underwent diagnostic imaging with color Doppler ultrasound (US). Seven patients underwent surgical exploration for testicular torsion diagnosed with color Doppler US (100% operative confirmati...

journal_title：Radiology

authors： Lerner RM,Mevorach RA,Hulbert WC,Rabinowitz R

更新日期：1990-08-01 00:00:00

abstract：:During the past century, imaging of the pregnant patient has been performed with radiography, scintigraphy, computed tomography, magnetic resonance imaging, and ultrasonography (US). US imaging has emerged as the primary imaging modality, because it provides real-time images at relatively low cost without the use of i...

journal_title：Radiology

authors： Benson CB,Doubilet PM

更新日期：2014-11-01 00:00:00

abstract：PURPOSE:To investigate the utility of a free-breathing ultrashort echo time (UTE) sequence for the evaluation of small pulmonary nodules in oncology patients by using a hybrid positron emission tomography (PET)/magnetic resonance (MR) imaging system and to compare the nodule detection rate between UTE and a conventiona...

journal_title：Radiology

authors： Burris NS,Johnson KM,Larson PE,Hope MD,Nagle SK,Behr SC,Hope TA

更新日期：2016-01-01 00:00:00

abstract：:Body computed tomographic (CT) scans were reviewed in 73 patients with hematomas of recent onset. The incidence, extent, and morphologic variation of regions of hyperdensity on precontrast scans were assessed. Hyperdensity was also sought in the scans of 80 control subjects with a mass due to neoplasm or abscess demon...

journal_title：Radiology

authors： Wolverson MK,Crepps LF,Sundaram M,Heiberg E,Vas WG,Shields JB

更新日期：1983-09-01 00:00:00

abstract：:In tumor radiobiology, the hypoxic cell has become especially important because of recent evidence of acute hypoxic regions within experimental tumors. The impact of hyperthermia on the development of acute hypoxia is discussed. Two experiments for studying hyperthermia and hypoxia in tumors are presented. Knowledge o...

journal_title：Radiology

authors： Dewhirst MW,Ozimek EJ,Gross J,Cetas TC

更新日期：1980-12-01 00:00:00

abstract：:Background CT deep learning reconstruction (DLR) algorithms have been developed to remove image noise. How the DLR affects image quality and radiation dose reduction has yet to be fully investigated. Purpose To investigate a DLR algorithm's dose reduction and image quality improvement for pediatric CT. Materials and M...

journal_title：Radiology

authors： Brady SL,Trout AT,Somasundaram E,Anton CG,Li Y,Dillman JR

更新日期：2021-01-01 00:00:00

abstract：PURPOSE:To prospectively evaluate the sensitivity and specificity of integrated fluorine 18 fluorodeoxyglucose (FDG) positron emission tomography (PET) and computed tomography (CT) (PET/CT) for the preoperative diagnosis of mediastinal nodal metastasis in stage T1 non-small cell lung cancer (NSCLC), with surgical and h...

journal_title：Radiology

authors： Kim BT,Lee KS,Shim SS,Choi JY,Kwon OJ,Kim H,Shim YM,Kim J,Kim S

更新日期：2006-11-01 00:00:00

abstract：:An asymptomatic hemorrhagic renal cyst was benign at angiography, nephrotomography, cystography, and cytologic examination. Malignancy was found at surgery. Malignancy cannot be excluded in a hemorrhagic cyst which is benign by all other criteria. ...

journal_title：Radiology

authors： Burstein J,Woodside JR

更新日期：1977-06-01 00:00:00

abstract：:Peripheral magnetic resonance (MR) angiography was performed in eight volunteers, with a temperature-controlled water blanket. After warming of the right foot, unobserved vessels became conspicuous in all patients: Average increase in signal intensity was nearly twofold in the major artery and vein depicted. A similar...

journal_title：Radiology

authors： Blackband SJ,Buckley DL,Knowles AJ,Gibbs P,Turnbull LW,Horsman A

更新日期：1996-03-01 00:00:00

abstract：:Radiographs, computed tomograms, and radionuclide bone scans were obtained preoperatively in three children with fibromatosis involving the bones and soft tissues of the extremities. Two of the children had identical scar-like bone lesions of the proximal tibia, which, to the authors' knowledge, have not been reported...

journal_title：Radiology

authors： Capusten BM,Azouz EM,Rosman MA

更新日期：1984-09-01 00:00:00

abstract：:The purpose of this study was to assess the blooming artifacts in ex vivo coronary arteries at multidetector computed tomography (CT) and flat-panel-volume CT by comparing measured areas of calcified plaque with respect to the reference standard of histopathologic findings. Three ex vivo hearts were scanned with multi...

journal_title：Radiology

authors： Sarwar A,Rieber J,Mooyaart EA,Seneviratne SK,Houser SL,Bamberg F,Raffel OC,Gupta R,Kalra MK,Pien H,Lee H,Brady TJ,Hoffmann U

更新日期：2008-10-01 00:00:00

abstract：:The relation of liver fat content to CT number was studied in 20 rabbits (17 experimental, 3 control), where fatty degeneration was produced by carbon tetrachloride (CCl4) ingestion. Liver scanning was performed before and 2--5 days after CCl4 administration.. Changes (decrease) in CT number were compared with triglyc...

journal_title：Radiology

authors： Ducommun JC,Goldberg HI,Korobkin M,Moss AA,Kressel HY

更新日期：1979-02-01 00:00:00

abstract：PURPOSE:To determine whether the "accordion sign" is a specific computed tomographic (CT) sign of Clostridium difficile colitis. MATERIALS AND METHODS:Fifty-seven patients with CT evidence of severe colitis, as judged by colonic wall thickening, an abnormal haustral pattern, the target sign, and stranding of the peric...

journal_title：Radiology

authors： Macari M,Balthazar EJ,Megibow AJ

更新日期：1999-06-01 00:00:00

abstract：:Clinical, angiographic, scintigraphic and pathologic observations in myocardial contusion were correlated. Radionuclide imaging of the injured heart with 99mTc-Sn-polyphosphate provides an accurate diagnosis in acute, even mild, myocardial contusion. The study can be carried out without danger to the critically ill pa...

journal_title：Radiology

authors： Chiu CL,Roelofs JD,Go RT,Doty DB,Rose EF,Christie JH

更新日期：1975-09-01 00:00:00

abstract：:Varicocele is a common and treatable cause of male subfertility. The authors describe a new technique for varicocele detection using radionuclide blood-pool imaging of the scrotum. Of 83 patients studied, 29 had a clinically palpable varicocele of various sizes, and 26 of them were demonstrated by this technique. Two ...

journal_title：Radiology

authors： Freund J,Handelsman DJ,Bautovich GJ,Conway AJ,Morris JG

更新日期：1980-10-01 00:00:00

abstract：:Twenty-one screen-film systems were examined using contrast-detail-dose methods in order to determine which were most dose-efficient for use in pediatric radiography. With a given screen, dose efficiency in the noise-limited region (contrast approximately equal to 0.05) was more or less constant (within the range of e...

journal_title：Radiology

authors： Cohen G,Wagner LK,McDaniel DL,Robinson LH

更新日期：1984-07-01 00:00:00

abstract：:Portosystemic venous collaterals were studied with sonography in 40 patients with known portal hypertension. Eight patients had technically inadequate scans, while 32 had optimal scans. Sixty groups of venous collaterals were identified. At least one collateral pathway was seen in 28 patients, for a sensitivity of 88%...

journal_title：Radiology

authors： Subramanyam BR,Balthazar EJ,Madamba MR,Raghavendra BN,Horii SC,Lefleur RS

更新日期：1983-01-01 00:00:00

abstract：:Diatrizoate (76%) contrast agent heated to 100 degrees C was injected into the veins of dogs and one human volunteer for the nonsurgical occlusion of the vessels. Follow-up venograms and histologic examinations, at intervals varying from one day to four weeks later, revealed thrombosis of the injected veins in all ani...

journal_title：Radiology

authors： Rholl KS,Rysavy JA,Vlodaver Z,Cragg AH,Castaneda-Zuniga WR,Amplatz K

更新日期：1982-11-01 00:00:00

abstract：PURPOSE:To determine the effect of the interpretation of plain chest radiographs on the time to definitive diagnosis of aortic dissection. MATERIALS AND METHODS:The authors evaluated chest radiographs from 75 patients in whom chest radiography was performed before aortic dissection was diagnosed. The radiographs and a...

journal_title：Radiology

authors： Luker GD,Glazer HS,Eagar G,Gutierrez FR,Sagel SS

更新日期：1994-12-01 00:00:00

abstract：:In vivo sodium magnetic resonance (MR) images of various structures--such as the heart, chest wall, kidneys, spine, liver, gallbladder, breasts, knees, hands, and feet--were obtained at 1.9 T. Improved sensitivity relative to standard spin-echo imaging was achieved with use of a modified three-dimensional acquisition ...

journal_title：Radiology

authors： Granot J

更新日期：1988-05-01 00:00:00

abstract：:The authors describe an adaptive motion correction method for three-dimensional magnetic resonance (MR) imaging. Three-dimensional imaging offers many advantages over two-dimensional multisection imaging but is susceptible to image corruption due to motion. Thus, it has been of limited use in the imaging of mobile str...

journal_title：Radiology

authors： Korin HW,Felmlee JP,Ehman RL,Riederer SJ

更新日期：1990-10-01 00:00:00

abstract：:The critical aspects of selection, acceptance testing, and quality control of a radiotherapy treatment simulator are discussed. The selection of a simulator involves consideration of: (a) motions and readouts, (b) safety features, (c) x-ray and imaging systems, and (d) mechanical tolerances (including guarantees). Whe...

journal_title：Radiology

authors： McCullough EC,Earle JD

更新日期：1979-04-01 00:00:00

abstract：:The addition of polytomography considerably increases the sensitivity of pneumoencephalography. The chiasmatic area lends itself particularly well to investigation by polytomoencephalography. In a series of 28 patients, the transverse dimension of the optic chiasm ranged from 4 to 20 mm, with a mean of 18 mm. The post...

journal_title：Radiology

authors： Johnson JC,Lubow M,Stears J

更新日期：1975-03-01 00:00:00

abstract：PURPOSE:To determine the prevalence of clinically serious findings unrelated to stroke on cranial magnetic resonance (MR) images in a population of community-dwelling elderly people. MATERIALS AND METHODS:Neuroradiologists reviewed MR images of 3,672 people aged 65 years and older who were enrolled in a longitudinal, ...

journal_title：Radiology

authors： Yue NC,Longstreth WT Jr,Elster AD,Jungreis CA,O'Leary DH,Poirier VC

更新日期：1997-01-01 00:00:00