Analysis of brain and cerebrospinal fluid volumes with MR imaging: impact on PET data correction for atrophy. Part II. Aging and Alzheimer dementia.

abstract：PURPOSE:To prospectively determine sensitivity and specificity of breast magnetic resonance (MR) imaging in a screening and symptomatic population by using independent double reading, with histologic or cytologic results or a minimum 18-month follow-up as the standard. MATERIALS AND METHODS:Informed consent and ethica...

journal_title：Radiology

authors： Warren RM,Pointon L,Thompson D,Hoff R,Gilbert FJ,Padhani A,Easton D,Lakhani SR,Leach MO,UK Magnetic Resonance Imaging in Breast Screening (MARIBS) Study Group.

更新日期：2005-09-01 00:00:00

abstract：PURPOSE:To evaluate the diagnostic potential of apparent diffusion coefficient (ADC) and intravoxel incoherent motion (IVIM)-derived parameters for differentiation of common pancreatic tumors, chronic pancreatitis, and normal pancreas and for characterization of the malignancy potential of intraductal papillary mucinou...

journal_title：Radiology

authors： Kang KM,Lee JM,Yoon JH,Kiefer B,Han JK,Choi BI

更新日期：2014-02-01 00:00:00

abstract：:Pulmonary arteriography is an invasive but relatively safe diagnostic procedure. It is generally believed that the presence of pulmonary hypertension is one risk factor that increases the likelihood of a major complication. To assess the magnitude of risk, the reports on 1,434 patients who underwent pulmonary arteriog...

journal_title：Radiology

authors： Perlmutt LM,Braun SD,Newman GE,Oke EJ,Dunnick NR

更新日期：1987-01-01 00:00:00

abstract：PURPOSE:To investigate the effect of variations in anatomic features of the circle of Willis on the perfusion territory to deep structures, including the nucleus caudatus, the nucleus lentiformis, and the thalamus. MATERIALS AND METHODS:The ethics committee of the study institution approved the study protocol. A total...

journal_title：Radiology

authors： Hendrikse J,Petersen ET,Chng SM,Venketasubramanian N,Golay X

更新日期：2010-03-01 00:00:00

abstract：:Shaped filters that are constructed of lead-loaded acrylic material for use in patient radiography are discussed. Use of the filters will result in improved overall image quality with significant exposure reduction to the patient (approximately a 2X reduction in breast exposure and a 3X reduction in thyroid gland expo...

journal_title：Radiology

authors： Gray JE,Stears JG,Frank ED

更新日期：1983-03-01 00:00:00

abstract：PURPOSE:To clarify the computed tomographic (CT) features of focal organizing pneumonia. MATERIALS AND METHODS:The authors retrospectively studied CT scans of 18 patients with histologically proved focal organizing pneumonia. Chest radiographs in all 18 patients suggested bronchogenic carcinoma. RESULTS:Seventeen of ...

journal_title：Radiology

authors： Kohno N,Ikezoe J,Johkoh T,Takeuchi N,Tomiyama N,Kido S,Kondoh H,Arisawa J,Kozuka T

更新日期：1993-10-01 00:00:00

abstract：:Twenty-four patients with hepatocellular carcinoma or cholangiocarcinoma were treated with hepatic artery infusion (HAI) of chemotherapeutic agents (14 patients) or hepatic artery embolization (HAE) (11 patients). One patient had a combination of the two treatments. Ten of the 14 (71%) patients who underwent HAI demon...

journal_title：Radiology

authors： Charnsangavej C,Chuang VP,Wallace S,Soo CS,Bowers T

更新日期：1983-04-01 00:00:00

abstract：:The sonographic appearances of primary non-Hodgkin lymphoma developing in the porta hepatis in three patients soon after hepatic transplantation were reviewed. The lymphomas appeared as large hypoechoic masses encasing vital portal structures--the hepatic artery and the common bile duct--in all three cases and displac...

journal_title：Radiology

authors： Moody AR,Wilson SR,Greig PD

更新日期：1992-03-01 00:00:00

abstract：:The medical records and radiographs of 62 patients admitted for smoke inhalation were reviewed to determine the value of the plain chest radiograph in the early detection of inhalation injury. Pulmonary edema resulting from the inhalation injury often leads to pulmonary insufficiency, and its early diagnosis is crucia...

journal_title：Radiology

authors： Teixidor HS,Rubin E,Novick GS,Alonso DR

更新日期：1983-11-01 00:00:00

abstract：PURPOSE:To evaluate diagnostic performance of three nonenhanced methods: variable-refocusing-flip angle (FA) fast spin-echo (SE)-based magnetic resonance (MR) angiography (variable FA MR) and constant-refocusing-FA fast SE-based MR angiography (constant-FA MR) and flow-sensitive dephasing (FSD)-prepared steady-state fr...

journal_title：Radiology

authors： Lim RP,Fan Z,Chatterji M,Baadh A,Atanasova IP,Storey P,Kim DC,Kim S,Hodnett PA,Ahmad A,Stoffel DR,Babb JS,Adelman MA,Xu J,Li D,Lee VS

更新日期：2013-04-01 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 measure the mean diffusional age-related changes of the brain over the full human life span by using diffusion-weighted spin-echo single-shot echo-planar magnetic resonance (MR) imaging and sequential whole-brain apparent diffusion coefficient (ADC) histogram analysis and, secondarily, to build mathematical ...

journal_title：Radiology

authors： Watanabe M,Sakai O,Ozonoff A,Kussman S,Jara H

更新日期：2013-02-01 00:00:00

abstract：PURPOSE:To investigate the effect of injection rate of contrast medium on aortic and hepatic peak enhancement at computed tomography. MATERIALS AND METHODS:Early pharmacokinetics of contrast enhancement was analyzed theoretically and simulated with a compartment model. Contrast enhancement curves were generated from t...

journal_title：Radiology

authors： Bae KT,Heiken JP,Brink JA

更新日期：1998-02-01 00:00:00

abstract：:Background Identification of large vessel occlusion (LVO) is critical to the management of acute ischemic stroke and prerequisite to endovascular therapy in recent trials. Increasing volumes and data complexity compel the development of fast, reliable, and automated tools for LVO detection to facilitate acute imaging ...

journal_title：Radiology

authors： Dehkharghani S,Lansberg M,Venkatsubramanian C,Cereda C,Lima F,Coelho H,Rocha F,Qureshi A,Haerian H,Mont'Alverne F,Copeland K,Heit J

更新日期：2021-01-12 00:00:00

abstract：:Forty-two patients underwent magnetic resonance (MR) imaging for a variety of lesions in the vertebral body. A 0.15-T MR system was employed. Twenty-six patients were found to have malignant metastatic lesions (group 1); 16 had nonneoplastic lesions (group 2). The ability to differentiate between the two groups with M...

journal_title：Radiology

authors： Sugimura K,Yamasaki K,Kitagaki H,Tanaka Y,Kono M

更新日期：1987-11-01 00:00:00

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...

journal_title：Radiology

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

更新日期：1991-06-01 00:00:00

abstract：:Purpose To assess subspecialty practice characteristics of the U.S. radiologist workforce. Materials and Methods This study used the Medicare Physician and Other Supplier Public Use File and did not constitute human subject research. The authors identified 33 090 radiologists who billed for professional services betwe...

journal_title：Radiology

authors： Rosenkrantz AB,Wang W,Hughes DR,Duszak R Jr

更新日期：2018-03-01 00:00:00

abstract：:Experiments were undertaken to determine the behavior of thallium-201 in the thyroid in relation to the iodide-trapping mechanism in rats. Iodide trapping was compared to thyroidal thallium-201 trapping 30 minutes after intravenous injection. Thallium-201 uptake followed iodide uptake in control rats. TSH- and T3-trea...

journal_title：Radiology

authors： Oster ZH,Strauss HW,Harrison K,Burns HD,Pitt B

更新日期：1978-03-01 00:00:00

abstract：:Multicenter, collaborative studies offer an effective way to meet the growing need for timely and generalizable clinical evaluations of imaging technologies. This article discusses issues of study design, statistical analysis, organization, and day-to-day group operation for collaborative prospective clinical evaluati...

journal_title：Radiology

authors： Gatsonis C,McNeil BJ

更新日期：1990-05-01 00:00:00

abstract：:A retrospective analysis of 84 ultrasound examinations (in 77 patients) was performed to assess the frequency of sonographic findings in chronic pancreatitis. The findings included: inhomogeneously increased echogenicity in 53% of these examinations, focal or diffuse enlargement in 41%, focal dense echoes in 40%, pseu...

journal_title：Radiology

authors： Alpern MB,Sandler MA,Kellman GM,Madrazo BL

更新日期：1985-04-01 00:00:00

abstract：:Acquisition and measurement of left ventricular (LV) volumes with a three-dimensional data set of cine magnetic resonance (MR) images from apex to base is a time-consuming process. Results of a study with 10 healthy volunteers and 10 patients with LV hypertrophy were prospectively evaluated. The heart was shown in the...

journal_title：Radiology

authors： Dulce MC,Mostbeck GH,Friese KK,Caputo GR,Higgins CB

更新日期：1993-08-01 00:00:00

abstract：:The extraperitoneal space around the urinary bladder is lamellate, just like the retroperitoneal space around the kidneys. The bladder, urachus, and obliterated umbilical arteries lie within the perivesical space, surrounded by umbilicovesical fascia, analogous to the perinephric space within the renal fascia. A much ...

journal_title：Radiology

authors： Auh YH,Rubenstein WA,Schneider M,Reckler JM,Whalen JP,Kazam E

更新日期：1986-05-01 00:00:00

abstract：:The CT findings in 16 patients with histologically proved primary central nervous system (CNS) reticulum cell sarcoma (RCS) showed this malignancy to have predilection for the basal ganglia and thalamus, the periventricular white matter, the corpus callosum, and the vermis cerebelli. In 43% of patients with untreated ...

journal_title：Radiology

authors： Enzmann DR,Krikorian J,Norman D,Kramer R,Pollock J,Faer M

更新日期：1979-01-01 00:00:00

abstract：PURPOSE:To evaluate prospectively bolus tracking to time hepatic arterial phase (HAP) imaging of hypervascular hepatocellular carcinomas (HCCs) with a 40-detector computed tomographic (CT) scanner. MATERIALS AND METHODS:This study received institutional review board approval; informed consent was obtained. The study i...

journal_title：Radiology

authors： Sultana S,Awai K,Nakayama Y,Nakaura T,Liu D,Hatemura M,Funama Y,Morishita S,Yamashita Y

更新日期：2007-04-01 00:00:00

abstract：PURPOSE:To determine if there is a subset of patients undergoing surgical biopsy for diffuse lung disease in whom accurate diagnosis can be made with computed tomography (CT) only. MATERIALS AND METHODS:Two chest radiologists retrospectively reviewed the CT scans of 85 patients in whom surgical biopsy for diffuse lung...

journal_title：Radiology

authors： Swensen SJ,Aughenbaugh GL,Myers JL

更新日期：1997-10-01 00:00:00

abstract：:A transhepatic computed-tomographic-guided biopsy of a right adrenal mass is described. This method is simpler to perform than the usual posterior biopsy carried out with the patient prone and is less likely to cause a complicating pneumothorax. In seven of eight patients with right adrenal masses, adrenal tissue was ...

journal_title：Radiology

authors： Price RB,Bernardino ME,Berkman WA,Sones PJ Jr,Torres WE

更新日期：1983-08-01 00:00:00

abstract：PURPOSE:To investigate whether apparent diffusion coefficients (ADCs) derived from diffusion-weighted (DW) magnetic resonance (MR) imaging at 3 T correlate with the clinical risk of prostate cancer in patients with tumors that are visible on MR images, with MR imaging/transrectal ultrasonography (US) fusion-guided biop...

journal_title：Radiology

authors： Turkbey B,Shah VP,Pang Y,Bernardo M,Xu S,Kruecker J,Locklin J,Baccala AA Jr,Rastinehad AR,Merino MJ,Shih JH,Wood BJ,Pinto PA,Choyke PL

更新日期：2011-02-01 00:00:00

abstract：:A comprehensive magnetic resonance (MR) imaging protocol for assessment of coronary artery disease (CAD) is presented. The protocol includes multiphase gradient-echo cine MR imaging for assessment of cardiac function, first-pass myocardial perfusion imaging at rest and during adenosine stress, MR imaging with delayed ...

journal_title：Radiology

authors： Plein S,Ridgway JP,Jones TR,Bloomer TN,Sivananthan MU

更新日期：2002-10-01 00:00:00

abstract：PURPOSE:To retrospectively evaluate the influence of postbiopsy hemorrhage on the accuracy of tumor detection at T2-weighted magnetic resonance (MR) imaging, dynamic contrast material-enhanced MR imaging, and diffusion-weighted (DW) MR imaging of prostate cancer, with histologic findings as the reference standard. MAT...

journal_title：Radiology

authors： Tamada T,Sone T,Jo Y,Yamamoto A,Yamashita T,Egashira N,Imai S,Fukunaga M

更新日期：2008-08-01 00:00:00

abstract：:A method by which the tissue parameters - T1, T2, and proton density - can be measured simultaneously was used in 160 patients with brain tumors to test the complete potential of magnetic resonance (MR) imaging for quantitative tissue characterization. MR tissue parameters of a wide variety of tumors, edema, white mat...

journal_title：Radiology

authors： Just M,Thelen M

更新日期：1988-12-01 00:00:00