CT of pancreatic islet cell tumors.


:In 41 patients with clinical evidence of pancreatic islet cell tumors, CT detected 21 of 27 tumors that were proved at surgery (sensitivity 78%) and correctly excluded the diagnosis in 14 of 14 patients with no evidence of tumor at long-term follow-up. Using rapid sequence CT scanning and bolus contrast material infusion, a vascular blush was identified in 13 of 16 tumors (81%). Tumors as small as 0.9 cm were localized. CT identified all malignant tumors, and staging accuracy was 100%. CT is useful as the initial imaging procedure for the diagnosis and staging of suspected islet cell tumors. Pancreatic venous sampling and angiography are complementary to CT for the detection of smaller lesions.






Stark DD,Moss AA,Goldberg HI,Deveney CW




Has Abstract


1984-02-01 00:00:00












  • Diagnostic and Prognostic Value of Long-Axis Strain and Myocardial Contraction Fraction Using Standard Cardiovascular MR Imaging in Patients with Nonischemic Dilated Cardiomyopathies.

    abstract::Purpose To assess the utility of established functional markers versus two additional functional markers derived from standard cardiovascular magnetic resonance (MR) images for their incremental diagnostic and prognostic information in patients with nonischemic dilated cardiomyopathy (NIDCM). Materials and Methods App...


    pub_type: 杂志文章


    authors: Arenja N,Riffel JH,Fritz T,André F,Aus dem Siepen F,Mueller-Hennessen M,Giannitsis E,Katus HA,Friedrich MG,Buss SJ

    更新日期:2017-06-01 00:00:00

  • Venous renal tumor extension: a prospective US evaluation.

    abstract::To evaluate the ability of ultrasonography (US) to determine venous tumor extension, we studied 120 consecutive patients with renal neoplasms. The incidence of renal vein involvement in this group was 18%; caval tumor extension occurred in 11% of the patients. Real-time US clearly visualized the entire retrohepatic in...


    pub_type: 杂志文章


    authors: Schwerk WB,Schwerk WN,Rodeck G

    更新日期:1985-08-01 00:00:00

  • Imaging Surveillance of Breast Cancer Survivors with Digital Mammography versus Digital Breast Tomosynthesis.

    abstract::Background Among breast cancer survivors, detecting a breast cancer when it is asymptomatic (rather than symptomatic) improves survival; thus, imaging surveillance in these patients is warranted. Digital breast tomosynthesis (DBT) is used for screening, but data on DBT for surveillance in this high-risk population are...


    pub_type: 杂志文章


    authors: Bahl M,Mercaldo S,McCarthy AM,Lehman CD

    更新日期:2021-02-01 00:00:00

  • Neurologic status in infants treated with extracorporeal membrane oxygenation: correlation of imaging findings with developmental outcome.

    abstract::A retrospective review was done of intracranial images obtained within the newborn period in 46 infants who had been treated with extracorporeal membrane oxygenation (ECMO). A neuroimaging score was determined on the basis of the extent and severity of findings on both ultrasound and computed tomographic scans. Presen...


    pub_type: 杂志文章


    authors: Taylor GA,Glass P,Fitz CR,Miller MK

    更新日期:1987-12-01 00:00:00

  • Recombinant human tissue-type plasminogen activator for thrombolysis in peripheral arteries and bypass grafts.

    abstract::Recombinant human tissue-type plasminogen activator (rt-PA) was infused intraarterially at 0.1 mg/kg/h for 1-6 1/2 hours in 25 patients with lower extremity thromboembolic occlusions (13 thrombosed arteries, 12 thrombosed bypass grafts). Occlusion duration ranged from 1 hour to 21 days. Thrombolysis occurred in 23 of ...


    pub_type: 临床试验,杂志文章


    authors: Risius B,Graor RA,Geisinger MA,Zelch MG,Lucas FV,Young JR,Grossbard EB

    更新日期:1986-07-01 00:00:00

  • Progressive multifocal leukoencephalopathy in 47 HIV-seropositive patients: neuroimaging with clinical and pathologic correlation.

    abstract::The authors investigated the spectrum of radiologic findings in a large series (n = 47) of patients seropositive to human immunodeficiency virus (HIV) 1 and with pathologically proved progressive multifocal leukoencephalopathy, to determine the characteristic imaging pattern of the disease. Thirty-six computed tomogra...


    pub_type: 杂志文章


    authors: Whiteman ML,Post MJ,Berger JR,Tate LG,Bell MD,Limonte LP

    更新日期:1993-04-01 00:00:00

  • Inflammatory polyp of the renal pelvis simulating transitional cell carcinoma.

    abstract::An inflammatory polyps of the renal pelvis that caused a mass effect at excretory urography simulated transitional cell carcinoma. In the differential diagnoses of intracalyceal masses, therefore, inflammatory polyp must be considered. ...


    pub_type: 杂志文章


    authors: Reuter KL,Krolikowski FJ,D'Orsi CJ,Yu D,Raptopoulos VD

    更新日期:1982-08-01 00:00:00

  • An introduction to biostatistics.

    abstract::This introduction to biostatistics and measurement is the first in a series of articles designed to provide Radiology readers with a basic understanding of statistical concepts. Although most readers of the radiology literature know that application of study results to their practice requires an understanding of stati...


    pub_type: 杂志文章


    authors: Applegate KE,Crewson PE

    更新日期:2002-11-01 00:00:00

  • Aggressive neuroblastoma simulating Wilms tumor.

    abstract::Solid intrarenal neoplasms in children are usually Wilms tumors. Occasionally, however, a neuroblastoma appears to be intrarenal. In six cases where this phenomenon was observed, the histologic findings of each tumor were identical: undifferentiated neuroblastoma. In each case the child's condition rapidly and progres...


    pub_type: 杂志文章


    authors: Rosenfield NS,Leonidas JC,Barwick KW

    更新日期:1988-01-01 00:00:00

  • Persistent bile leak after liver transplantation: biloma drainage and endoscopic retrograde cholangiopancreatographic sphincterotomy.

    abstract::Persistent bile leaks after liver transplantation were successfully treated in three patients with percutaneous or surgical drainage of bilomas and endoscopic retrograde ampullary sphincterotomy. In all three patients, biliary anastomoses were achieved by means of choledochocholedochostomies, with a T-tube stent in th...


    pub_type: 杂志文章


    authors: Ward EM,Wiesner RH,Hughes RW,Krom RA

    更新日期:1991-06-01 00:00:00

  • Safety and Efficacy of an Absorbable Filter in the Inferior Vena Cava to Prevent Pulmonary Embolism in Swine.

    abstract::Purpose To evaluate the immediate and long-term safety as well as thrombus-capturing efficacy for 5 weeks after implantation of an absorbable inferior vena cava (IVC) filter in a swine model. Materials and Methods This study was approved by the institutional animal care and use committee. Eleven absorbable IVC filters...


    pub_type: 杂志文章


    authors: Huang SY,Eggers M,McArthur MJ,Dixon KA,McWatters A,Dria S,Hill LR,Melancon MP,Steele JR,Wallace MJ

    更新日期:2017-12-01 00:00:00

  • Biofunctionalized Hybrid Magnetic Gold Nanoparticles as Catalysts for Photothermal Ablation of Colorectal Liver Metastases.

    abstract::Purpose To demonstrate that anti-MG1 conjugated hybrid magnetic gold nanoparticles (HNPs) act as a catalyst during photothermal ablation (PTA) of colorectal liver metastases, and thus increase ablation zones. Materials and Methods All experiments were performed with approval of the institutional animal care and use co...


    pub_type: 杂志文章


    authors: White SB,Kim DH,Guo Y,Li W,Yang Y,Chen J,Gogineni VR,Larson AC

    更新日期:2017-12-01 00:00:00

  • The cause of superior vena cava syndrome: diagnosis with percutaneous atherectomy.

    abstract::The cause of superior vena cava syndrome (SVCS) in two patients was identified by means of endovascular biopsy of the superior vena cava (SVC) performed with a percutaneous atherectomy catheter. In both cases, the extracted tissues were neoplastic, therefore obviating additional invasive procedures. After a specific d...


    pub_type: 杂志文章


    authors: Dake MD,Zemel G,Dolmatch BL,Katzen BT

    更新日期:1990-03-01 00:00:00

  • Adrenal cortex dysfunction: CT findings.

    abstract::The computed tomographic appearance of the adrenal gland was studied in 302 patients with possible endocrinologic disease and 107 patients undergoing CT for nonendocrinologic reasons. Measurements of adrenal size were also made in 100 adults with no known adrenal pathology. CT proved to be a sensitive diagnostic tool ...


    pub_type: 杂志文章


    authors: Huebener KH,Treugut H

    更新日期:1984-01-01 00:00:00

  • Renal functional response to dopamine during and after arteriography in patients with chronic renal insufficiency.

    abstract::The potential renal vasodilatory effect of dopamine in improving renal function after arteriography was studied. Sixty patients with preexisting renal insufficiency were prospectively randomized into two groups. Patients in the treated group (n = 30) received an infusion of dopamine for 12 hours starting at the beginn...


    pub_type: 临床试验,杂志文章,随机对照试验


    authors: Hans B,Hans SS,Mittal VK,Khan TA,Patel N,Dahn MS

    更新日期:1990-09-01 00:00:00

  • Lymph node metastasis in patients with clinical early-stage cervical cancer: detection with integrated FDG PET/CT.

    abstract:PURPOSE:To prospectively determine the accuracy of combination positron emission tomography-computed tomography (PET/CT) in lymph node staging in patients with early-stage cervical cancer, with histopathologic results as the reference standard. MATERIALS AND METHODS:The study was institutional review board approved, a...


    pub_type: 杂志文章


    authors: Sironi S,Buda A,Picchio M,Perego P,Moreni R,Pellegrino A,Colombo M,Mangioni C,Messa C,Fazio F

    更新日期:2006-01-01 00:00:00

  • Retrievable vena caval filter percutaneously introduced.

    abstract::A vena caval filter than can be introduced percutaneously via the femoral vein is described. We placed these filters in five patients without complications. Experimental work in filter removal one to two weeks after insertion in dogs has been performed. ...


    pub_type: 杂志文章


    authors: Lund G,Rysavy J,Hunter DW,Castaneda-Zuniga WR,Amplatz K

    更新日期:1985-06-01 00:00:00

  • Optical imaging of cancer heterogeneity with multispectral optoacoustic tomography.

    abstract:PURPOSE:To investigate whether multispectral optoacoustic tomography (MSOT) can reveal the heterogeneous distributions of exogenous agents of interest and vascular characteristics through tumors of several millimeters in diameter in vivo. MATERIALS AND METHODS:Procedures involving animals were approved by the governme...


    pub_type: 杂志文章


    authors: Herzog E,Taruttis A,Beziere N,Lutich AA,Razansky D,Ntziachristos V

    更新日期:2012-05-01 00:00:00

  • Proton MR spectroscopic imaging without water suppression.

    abstract::To improve reproducibility in proton magnetic resonance (MR) spectroscopic imaging in human brain, simultaneous acquisition of the internal water reference and metabolite signals was evaluated. Measurements in healthy volunteers showed that the increase in dynamic range from signal oversampling was sufficient to avoid...


    pub_type: 杂志文章


    authors: van Der Veen JW,Weinberger DR,Tedeschi G,Frank JA,Duyn JH

    更新日期:2000-10-01 00:00:00

  • Steady-state free precession imaging in the presence of motion: application for improved visualization of the cerebrospinal fluid.

    abstract::The authors discuss the appropriate FISP (fast imaging with steady-state precession) sequence structure to maintain constant phase at the radio-frequency pulse in the presence of motion. They present preliminary results of its application to head and spine imaging in an effort to maintain contrast between the cerebros...


    pub_type: 杂志文章


    authors: Haacke EM,Wielopolski PA,Tkach JA,Modic MT

    更新日期:1990-05-01 00:00:00

  • Ductal carcinoma in situ: computer-aided detection in screening mammography.

    abstract:PURPOSE:To retrospectively evaluate the sensitivity of computer-aided detection (CAD) in depicting ductal carcinoma in situ (DCIS) on screening mammograms by using biopsy proved lesion location as the reference standard. MATERIALS AND METHODS:Institutional review board approval was obtained, with a waiver of patient i...


    pub_type: 杂志文章


    authors: Pai VR,Gregory NE,Swinford AE,Rebner M

    更新日期:2006-12-01 00:00:00

  • Digital Compared with Screen-Film Mammography: Measures of Diagnostic Accuracy among Women Screened in the Ontario Breast Screening Program.

    abstract:PURPOSE:To compare measures of diagnostic accuracy between large concurrent cohorts of women screened with digital computed radiography (CR), direct radiography (DR), and screen-film mammography (SFM). MATERIALS AND METHODS:This study was approved by the University of Toronto Research Ethics Board; informed consent wa...


    pub_type: 杂志文章


    authors: Prummel MV,Muradali D,Shumak R,Majpruz V,Brown P,Jiang H,Done SJ,Yaffe MJ,Chiarelli AM

    更新日期:2016-02-01 00:00:00

  • First-third ejection fraction at rest compared with exercise radionuclide angiography in assessing patients with coronary artery disease.

    abstract::To compare two methods of evaluating patients with coronary artery disease, the authors assessed the ejection fraction (EF) during the first-third (1/3) of systole by first-pass radionuclide angiography and the EF response to exercise in 22 normal individuals and 40 patients. The 1/3 EF was calculated by averaging 3--...


    pub_type: 杂志文章


    authors: Slutsky R,Battler A,Karliner JS,Froelicher V,Ashburn W

    更新日期:1980-07-01 00:00:00

  • The effects of nuclear magnetic resonance on patients with cardiac pacemakers.

    abstract::The effect of nuclear magnetic resonance (NMR) imaging on six representative cardiac pacemakers was studied. The results indicate that the threshold for initiating the asynchronous mode of a pacemaker is 17 gauss. Radiofrequency levels are present in an NMR unit and may confuse or possibly inhibit demand pacemakers, a...


    pub_type: 杂志文章


    authors: Pavlicek W,Geisinger M,Castle L,Borkowski GP,Meaney TF,Bream BL,Gallagher JH

    更新日期:1983-04-01 00:00:00

  • Absolute speeds of screen-film systems and their absorbed-energy constants.

    abstract::Absolute speeds (mR-1) of screen-film systems were determined accurately and precisely from ten independent measurements over a six month period at several beam qualities that included both scatter and scatter-free conditions. The absorbed x-ray energies in the screens that yielded a net film density of 1.0 were obtai...


    pub_type: 杂志文章


    authors: Kodera Y,Doi K,Chan HP

    更新日期:1984-04-01 00:00:00

  • Releif of severe fecal impactions with water-soluble contrast enemas.

    abstract::High fecal impaction resulted in complete bowel obstruction in 2 children following renal transplantation and in one adult on chemotherapy and narcotics. The usual methods of relief failed, and water-soluble contrast enemas with a high osmolality were employed. Fluoroscopic control assured placement of the enema fluid...


    pub_type: 杂志文章


    authors: Culp WC

    更新日期:1975-04-01 00:00:00

  • Deglutition after near-fatal choking episode: radiologic evaluation.

    abstract::Acute airway obstruction during oral intake is a relatively common event that may be fetal if not relieved immediately. Deglutition was studied in 75 individuals who had experienced a near-fatal choking episode (NFCE) or sudden inability to breathe during food intake that was promptly relieved by means of a Heimlich m...


    pub_type: 杂志文章


    authors: Feinberg MJ,Ekberg O

    更新日期:1990-09-01 00:00:00

  • Cortical deactivation in mild cognitive impairment: high-field-strength functional MR imaging.

    abstract:PURPOSE:To prospectively identify brain regions in which task-related changes in activation during a memory encoding task, measured with functional magnetic resonance (MR) imaging, correlate with degree of memory impairment across Alzheimer disease (AD), mild cognitive impairment (MCI), and elderly control subjects. M...


    pub_type: 杂志文章


    authors: Petrella JR,Wang L,Krishnan S,Slavin MJ,Prince SE,Tran TT,Doraiswamy PM

    更新日期:2007-10-01 00:00:00

  • Multiphase CT Angiography Improves Prediction of Intracerebral Hemorrhage Expansion.

    abstract::Purpose To determine the prevalence of the spot sign and the accuracy of using the spot sign to predict intracerebral hemorrhage (ICH) expansion with standardized multiphase computed tomographic (CT) angiography. Materials and Methods This prospective observational cohort study included 123 consecutive patients with a...


    pub_type: 杂志文章


    authors: Rodriguez-Luna D,Coscojuela P,Rodriguez-Villatoro N,Juega JM,Boned S,Muchada M,Pagola J,Rubiera M,Ribo M,Tomasello A,Demchuk AM,Goyal M,Molina CA

    更新日期:2017-12-01 00:00:00

  • Salivary gland tumors: evaluation with two-phase helical CT.

    abstract:PURPOSE:To evaluate two-phase helical computed tomography (CT) in the characterization of salivary gland tumors. MATERIALS AND METHODS:Sixty-four patients with major salivary gland tumors underwent two-phase helical CT. The histopathologic diagnosis was obtained by means of surgical resection or biopsy in all patients...


    pub_type: 杂志文章


    authors: Choi DS,Na DG,Byun HS,Ko YH,Kim CK,Cho JM,Lee HK

    更新日期:2000-01-01 00:00:00