Central nervous system tumors in children: detection by magnetic resonance imaging.

abstract：:Purpose To characterize intratumoral spatial heterogeneity at perfusion magnetic resonance (MR) imaging and investigate intratumoral heterogeneity as a predictor of recurrence-free survival (RFS) in breast cancer. Materials and Methods In this retrospective study, a discovery cohort (n = 60) and a multicenter validati...

journal_title：Radiology

authors： Wu J,Cao G,Sun X,Lee J,Rubin DL,Napel S,Kurian AW,Daniel BL,Li R

更新日期：2018-07-01 00:00:00

abstract：:Fifty-one pediatric patients (range, 1 mo. to 16 yr.), all of whom had normal clinical findings and laboratory data pertaining to the gallbladder and biliary tract, were examined by ultrasound. Scans showed a gradual increase in the size of the gallbladder with age; only one patient had a gallbladder diameter greater ...

journal_title：Radiology

authors： McGahan JP,Phillips HE,Cox KL

更新日期：1982-09-01 00:00:00

abstract：:Background Isocitrate dehydrogenase (IDH) mutation has become one of the most important prognostic biomarkers in glioma management. Measurement of 2-hydroxyglutarate (2HG) with MR spectroscopy has shown high pooled sensitivity, although false-positive results with MR spectroscopy have been reported. Purpose To investi...

journal_title：Radiology

authors： Suh CH,Kim HS,Paik W,Choi C,Ryu KH,Kim D,Woo DC,Park JE,Jung SC,Choi CG,Kim SJ

更新日期：2019-06-01 00:00:00

abstract：PURPOSE:To retrospectively determine whether blood oxygen level-dependent functional magnetic resonance (MR) imaging can aid prediction of postoperative memory changes in epileptic patients after temporal lobe surgery. MATERIALS AND METHODS:This study was approved by the local ethics committee, and informed consent wa...

journal_title：Radiology

authors： Dupont S,Duron E,Samson S,Denos M,Volle E,Delmaire C,Navarro V,Chiras J,Lehéricy S,Samson Y,Baulac M

更新日期：2010-04-01 00:00:00

abstract：:Seven patients with proved small-bowel infarction were studied to determine whether the radiographic appearance of an ischemic segment is helpful in predicting the severity of the process, in particular the potential viability or nonviability of the affected bowel. It was found that the barium examination is useful in...

journal_title：Radiology

authors： Joffe N,Goldman H,Antonioli DA

更新日期：1977-05-01 00:00:00

abstract：:A prospective study was undertaken to establish the normal spectrum and timing of gadolinium-enhanced magnetic resonance (MR) imaging findings in 15 patients who had resolution of symptoms after successful lumbar disk surgery. Enhancement of the facet joints (in 88% of disk levels) and paraspinal muscles (100%) decrea...

journal_title：Radiology

authors： Boden SD,Davis DO,Dina TS,Parker CP,O'Malley S,Sunner JL,Wiesel SW

更新日期：1992-01-01 00:00:00

abstract：:Purpose To evaluate glass-fiber-based guidewires that are safe for magnetic resonance (MR) imaging-guided endovascular interventions by using a phantom and an in vivo swine model. Materials and Methods MR imaging-safe guidewires were made from micropultruded glass and/or aramid fibers and epoxy resin with diameters of...

journal_title：Radiology

authors： Massmann A,Buecker A,Schneider GK

更新日期：2017-08-01 00:00:00

abstract：:Retrospective analysis of 139 ventilation-perfusion (V/Q) lung scans obtained for suspected pulmonary embolism (PE) was undertaken, using the Biello criteria for interpretation. All scans were correlated with chest radiographs obtained within 24 hours and with pulmonary angiograms obtained within 72 hours of the V/Q s...

journal_title：Radiology

authors： Spies WG,Burstein SP,Dillehay GL,Vogelzang RL,Spies SM

更新日期：1986-05-01 00:00:00

abstract：:Gastric polyps were found in 38 patients in a series of 2,420 consecutive double-contrast studies of the upper gastrointestinal tract. The resulting incidence of 1.6% is four times the highest figure previously reported. Single polyps were usually located in the antrum, multiple polyps in the body of fundus. Two-third...

journal_title：Radiology

authors： Gordon R,Laufer I,Kressel HY

更新日期：1980-01-01 00:00:00

abstract：PURPOSE:To compare breast cancer disease-free survival (DFS) outcomes of patients with newly diagnosed breast cancer without and with preoperative magnetic resonance (MR) imaging. MATERIALS AND METHODS This study was approved by an institutional review board, and informed consent was waived. From 2004 to 2009 (unilater...

journal_title：Radiology

authors： Yi A,Cho N,Yang KS,Han W,Noh DY,Moon WK

更新日期：2015-09-01 00:00:00

abstract：:Studies of pylmonary clearance of tantalum dust labeled with 182Ta in dogs have been extended to as far as 816 days postexposure in order to substantiate earlier pulmonary retention data, examine lymphatic uptake, and seek long-term pathological changes. Exposure to 5-mug and 10-mug powders was compared with the resul...

journal_title：Radiology

authors： Morrow PE,Kilpper RW,Beiter HE,Gibb FR

更新日期：1976-11-01 00:00:00

abstract：PURPOSE:To compare the diagnostic yield of abdominal radiography with that of computed tomography (CT) in adult patients presenting to the emergency department with nontraumatic abdominal pain. MATERIALS AND METHODS:Records of 1,000 consecutive patients presenting to the emergency department with acute abdominal pain ...

journal_title：Radiology

authors： Ahn SH,Mayo-Smith WW,Murphy BL,Reinert SE,Cronan JJ

更新日期：2002-10-01 00:00:00

abstract：PURPOSE:To prospectively evaluate the elastographic appearance of thyroid gland tumors and explore the potential sensitivity and specificity of ultrasonographic (US) elastography for differentiating benign and malignant tumors, with histopathologic analysis as the reference standard. MATERIALS AND METHODS:The study wa...

journal_title：Radiology

authors： Lyshchik A,Higashi T,Asato R,Tanaka S,Ito J,Mai JJ,Pellot-Barakat C,Insana MF,Brill AB,Saga T,Hiraoka M,Togashi K

更新日期：2005-10-01 00:00:00

abstract：PURPOSE:To determine whether liver tumor detection is increased by acquiring multiple dynamic arterial phase and portal venous phase magnetic resonance (MR) images. MATERIALS AND METHODS:Dynamic MR imaging was performed in 205 patients at 1.5 T with use of a fast spoiled gradient-echo technique (repetition time, 9-12 ...

journal_title：Radiology

authors： Peterson MS,Baron RL,Murakami T

更新日期：1996-11-01 00:00:00

abstract：:Molecular imaging, generally defined as noninvasive imaging of cellular and subcellular events, has gained tremendous depth and breadth as a research and clinical discipline in recent years. The coalescence of major advances in engineering, molecular biology, chemistry, immunology, and genetics has fueled multi- and i...

journal_title：Radiology

authors： Kircher MF,Willmann JK

更新日期：2012-06-01 00:00:00

abstract：:Gated radionuclide imaging with 99mTc-labeled red blood cells was employed to assess changes in right atrial (RA) volume in 17 subjects. Studies were repeated within two hours in five of 12 normal subjects and at two and ten days after infarction in five patients. Time-activity curves were generated for the RA and rig...

journal_title：Radiology

authors： Marmor A,Biello DR,Sampathkumaran KS,Geltman EM,Siegel BA,Roberts R

更新日期：1981-06-01 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：PURPOSE:To determine if a tiny enhancing dot is characteristic of small hemangiomas with low attenuation during the hepatic arterial phase (HAP) and portal venous phase (PVP) of two-phase spiral computed tomography (CT). MATERIALS AND METHODS:Among 249 consecutive patients with 377 hemangiomas who underwent two-phase ...

journal_title：Radiology

authors： Jang HJ,Choi BI,Kim TK,Yun EJ,Kim KW,Han JK,Han MC

更新日期：1998-08-01 00:00:00

abstract：PURPOSE:To characterize the radiographic features of ventilator-associated Pseudomonas aeruginosa pneumonia (PAP). MATERIALS AND METHODS:In 56 patients (40 men and 16 women), PAP was documented with fiberoptic bronchoscopy. All patients underwent mechanical ventilation for at least 48 hours before diagnosis. The findi...

journal_title：Radiology

authors： Winer-Muram HT,Jennings SG,Wunderink RG,Jones CB,Leeper KV Jr

更新日期：1995-04-01 00:00:00

abstract：PURPOSE:To investigate the clinical parameters that are associated with the development of brain edema of hypertensive encephalopathy in patients with preeclampsia-eclampsia. MATERIALS AND METHODS:Twenty-eight patients with preeclampsia-eclampsia and neurologic symptoms underwent magnetic resonance (MR) imaging. Clini...

journal_title：Radiology

authors： Schwartz RB,Feske SK,Polak JF,DeGirolami U,Iaia A,Beckner KM,Bravo SM,Klufas RA,Chai RY,Repke JT

更新日期：2000-11-01 00:00:00

abstract：:Preliminary results indicate that film dosimetry is a simple and precise method of determining volume dose distributions. Calculated dose distributions using computers or estimations of surface dose using TLD dosimeters are within 5% of the measured dose. Initial attempts to find suitable alternate techniques tailored...

journal_title：Radiology

authors： Mansfield CM,Ayyangar K,Suntharalingam N

更新日期：1976-09-01 00:00:00

abstract：:During a test of the ability to classify the profusion characteristics of pneumoconiosis recorded in chest radiographs, a constant decision criterion level needs to be maintained or false conclusions regarding the observer's receiver operating characteristic (ROC) curve may result. ...

journal_title：Radiology

authors： Goodenough DJ

更新日期：1975-02-01 00:00:00

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. ...

journal_title：Radiology

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

更新日期：1982-08-01 00:00:00

abstract：:Clinical, pathologic, and computed tomographic (CT) findings were reviewed in 400 patients with ethmoid sinus disease, including 272 who had undergone surgery. The postoperative appearance of ethmoid sinuses on CT scans is a highly neglected subject in radiologic literature. The unique ethmoid anatomy permits a variet...

journal_title：Radiology

authors： Som PM,Lawson W,Biller HF,Lanzieri CF

更新日期：1986-06-01 00:00:00

abstract：:The papillary process of the caudate lobe of the liver may appear separate from the liver and thus mimic lymph nodes or a pancreatic mass. In order to evaluate the sonographic appearance of this anatomic structure, 400 male and female patients with a mean age of 50 years were studied prospectively by means of ultrasou...

journal_title：Radiology

authors： Donoso L,Martínez-Noguera A,Zidan A,Lora F

更新日期：1989-12-01 00:00:00

abstract：:The development and aging of four brain midline structures--the pituitary gland, pons, cerebellar vermis, and corpus callosum--were studied. The dimensions and area of these structures were measured by means of midsagittal magnetic resonance imaging. The study group consisted of 94 patients newborn to 15 years old and...

journal_title：Radiology

authors： Hayakawa K,Konishi Y,Matsuda T,Kuriyama M,Konishi K,Yamashita K,Okumura R,Hamanaka D

更新日期：1989-07-01 00:00:00

abstract：:The authors investigated the contrast enhancement characteristics of the coronary artery stent lumen to assess patency and then evaluated the accuracy of computed tomographic (CT) measurement of the in-stent luminal diameter. Nineteen patients (16 men and three women; mean age, 58.7 years) with 26 stents underwent car...

journal_title：Radiology

authors： Hong C,Chrysant GS,Woodard PK,Bae KT

更新日期：2004-10-01 00:00:00

abstract：:Vascular anomalies of the umbilical cord and fetus were evaluated with ultrasound in 11 fetuses. The anomalies included true knot of the cord (n = 1), umbilical vein varix (n = 1), persistent right umbilical vein (n = 1), and unilateral hypertrophy of the iliac artery in cases of a single umbilical artery (n = 8). One...

journal_title：Radiology

authors： Jeanty P

更新日期：1989-11-01 00:00:00

abstract：:Ten of 152 (7%) consecutive breast cancer patients who underwent excisional biopsy and radiation therapy developed suspect microcalcifications at the biopsy site. All ten patients underwent reexcision. Seventeen other patients developed scattered, coarse, benign macrocalcifications that have remained stable as determi...

journal_title：Radiology

authors： Rebner M,Pennes DR,Adler DD,Helvie MA,Lichter AS

更新日期：1989-03-01 00:00:00

abstract：:Normal kidney length was measured on the excretory urogram in 262 children 0 to 14.5 years of age (422 kidneys). While mean values were similar to those in the literature, the standard deviation (0.785 cm) was much lower than that reported previously. ...

journal_title：Radiology

authors： Currarino G,Williams B,Dana K

更新日期：1984-03-01 00:00:00