Development and evaluation of phantom for verification of section thickness at thin-section MR imaging.

abstract：:To reduce radiation exposure to patients and staff during neurointerventional procedures, region-of-interest (ROI) techniques were used with fluoroscopy, road mapping, and digital subtraction angiography in 19 patients. ROI filters, made of multiple layers of gadolinium, were attached to the collimators. Patient skin ...

journal_title：Radiology

authors： Rudin S,Guterman LR,Granger WE,Bednarek DR,Hopkins LN

更新日期：1996-06-01 00:00:00

abstract：PURPOSE:To determine the role of ultrasonography (US) with supplemental computed tomography (CT) in patients with primary hyperparathyroidism who undergo minimally invasive surgery instead of conventional neck exploration. MATERIALS AND METHODS:US and CT were performed in 61 consecutive patients with primary hyperpara...

journal_title：Radiology

authors： van Dalen A,Smit CP,van Vroonhoven TJ,Burger H,de Lange EE

更新日期：2001-09-01 00:00:00

abstract：:Ten percent of children with biliary atresia have an associated complex of anomalies, including polysplenia, azygous continuation of the inferior vena cava, preduodenal portal vein, hepatic arterial anomalies, and bilaterally bilobed lungs. These abnormalities will not be detected if the preoperative workup is limited...

journal_title：Radiology

authors： Abramson SJ,Berdon WE,Altman RP,Amodio JB,Levy J

更新日期：1987-05-01 00:00:00

abstract：:A grid consisting of a focused array of radiopaque strips has been constructed. No interspace material is employed, and, during an exposure, the arrangement moves so that the grid strips remain focused and a uniform film density is obtained. Preliminary measurements and radiographs of patients indicate that such a dev...

journal_title：Radiology

authors： Barnes GT,Moreland RF,Yester MV,Witten DM

更新日期：1980-06-01 00:00:00

abstract：:To standardize femur measurement for the identification of fetuses at risk for Down syndrome, sonographers of varying professional experience and background measured the femurs of 20 Down syndrome fetuses and 709 normal control fetuses. A regression analysis performed to compare biparietal diameter to femur length on ...

journal_title：Radiology

authors： Benacerraf BR,Cnann A,Gelman R,Laboda LA,Frigoletto FD Jr

更新日期：1989-11-01 00:00:00

abstract：PURPOSE:Fast-neutron irradiation and boron-neutron capture therapy (BNCT) have been independently investigated as treatments for malignant disease. This study tested the feasibility of enhancing fast-neutron irradiation with concomitant BNCT. MATERIALS AND METHODS:Seventeen male Fisher rats, each weighing 180-200 g an...

journal_title：Radiology

authors： Buchholz TA,Rasey JS,Laramore GE,Livesey JC,Chin L,Risler R,Hamlin DK,Spence AM,Griffin TW

更新日期：1994-06-01 00:00:00

abstract：PURPOSE:To evaluate whether dynamic magnetic resonance (MR) imaging can increase the diagnostic accuracy in suspected local recurrence of rectal carcinoma. MATERIALS AND METHODS:Eighteen patients (seven men, 11 women, aged 26-78 years) with 19 suspect lesions were examined. T1-weighted (pre- and postcontrast) and T2-w...

journal_title：Radiology

authors： Müller-Schimpfle M,Brix G,Layer G,Schlag P,Engenhart R,Frohmuller S,Hess T,Zuna I,Semmler W,van Kaick G

更新日期：1993-12-01 00:00:00

abstract：:Background It is uncertain whether a deep learning-based automatic detection algorithm (DLAD) for identifying malignant nodules on chest radiographs will help diagnose lung cancers. Purpose To evaluate the efficacy of using a DLAD in observer performance for the detection of lung cancers on chest radiographs. Material...

journal_title：Radiology

authors： Jang S,Song H,Shin YJ,Kim J,Kim J,Lee KW,Lee SS,Lee W,Lee S,Lee KH

更新日期：2020-09-01 00:00:00

abstract：PURPOSE:To examine the feasibility and safety of magnetic resonance (MR)-guided biopsy by using a transgluteal approach in patients with suspicious prostate lesions by using an MR-compatible robotic system and a 1.5-T MR system. MATERIALS AND METHODS:The study was approved by the institutional review board of Universi...

journal_title：Radiology

authors： Zangos S,Melzer A,Eichler K,Sadighi C,Thalhammer A,Bodelle B,Wolf R,Gruber-Rouh T,Proschek D,Hammerstingl R,Müller C,Mack MG,Vogl TJ

更新日期：2011-06-01 00:00:00

abstract：:The value of magnetic resonance (MR) imaging in assessing renal transplants was prospectively studied in 45 patients with 46 allografts. Four allografts were imaged at two different times, and separate diagnoses were given for both examinations. Therefore, this study was based on 50 proved diagnoses: nine normally fun...

journal_title：Radiology

authors： Hricak H,Terrier F,Demas BE

更新日期：1986-05-01 00:00:00

abstract：:Fifteen cases of smooth muscle tumor of the alimentary tract were collected for analysis from several institutions. The findings showed that angiography is the best method available for diagnosis and evaluation of such tumors but is unable to differentiate benign from malignant lesions unless arterial invasion is dete...

journal_title：Radiology

authors： Uflacker R,Amaral NM,Lima S,Wholey M,Pereira EC,Nobrega Filho M,Tavares T

更新日期：1981-05-01 00:00:00

abstract：PURPOSE:To evaluate the variability of true-positive and false-positive cues by using a commercially available computer-aided detection (CAD) system for analysis of 50 malignancies in a screening population. MATERIALS AND METHODS:Fifty breast cancers detected at screening were analyzed by using a commercially availabl...

journal_title：Radiology

authors： Baker JA,Lo JY,Delong DM,Floyd CE

更新日期：2004-11-01 00:00:00

abstract：:It has recently been suggested that the resistive index (RI) in native kidneys of healthy children is age dependent; however, this relationship has not been completely defined or explained. In 110 kidneys in 71 healthy children aged newborn to 11 years, RIs were determined from peripheral sites (presumed to be arcuate...

journal_title：Radiology

authors： Bude RO,DiPietro MA,Platt JF,Rubin JM,Miesowicz S,Lundquist C

更新日期：1992-08-01 00:00:00

abstract：:Vessel rupture complicating transluminal angioplasty is an uncommon event, especially in the renal artery. The authors report such a case, which was treated with immediate balloon tamponade and did not require surgical intervention. Possible causes and appropriate management are discussed, as well as the need for repo...

journal_title：Radiology

authors： Ashenburg RJ,Blair RJ,Rivera FJ,Weigele JB

更新日期：1990-03-01 00:00:00

abstract：:An investigation of the relationship between breast parenchymal patterns and breast cancer prevalence in a large referral population is presented. Mammograms were assigned to one of four categories according to our interpretation of Wolfe's classification. Cancer prevalence for the four patterns was similar when uncor...

journal_title：Radiology

authors： Peyster RG,Kalisher L,Cole P

更新日期：1977-11-01 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：:Clinical prediction rules are multifactorial tools used to aid in clinical decision making. In radiology, clinical prediction rules are an important method for determining who should undergo imaging and, in combination with cost-effectiveness analysis, how imaging should be performed. To be useful, clinical prediction...

journal_title：Radiology

authors： Blackmore CC

更新日期：2005-05-01 00:00:00

abstract：:The authors describe three pediatric patients with diffuse pulmonary hemangiomatosis. Virtually identical clinical, radiographic, and pathologic findings were observed in each case. The combination of diffuse interstitial pulmonary infiltration and bloody pleural effusion in a child is pathognomonic. Early recognition...

journal_title：Radiology

authors： Rowen M,Thompson JR,Williamson RA,Wood BJ

更新日期：1978-05-01 00:00:00

abstract：PURPOSE:To explore the lower limits for radiofrequency (RF) power-induced specific absorption rate (SAR) achievable at 1.5 T for brain magnetic resonance (MR) imaging without loss of tissue signal or contrast present in high-SAR clinical imaging in order to create a potentially viable MR method at ultra-low RF power to...

journal_title：Radiology

authors： Sarkar SN,Alsop DC,Madhuranthakam AJ,Busse RF,Robson PM,Rofsky NM,Hackney DB

更新日期：2011-05-01 00:00:00

abstract：:Lung scintigrams and pulmonary angiograms of 111 patients with suspected pulmonary embolism who had matching perfusion defects and radiographic abnormalities (infiltrate, atelectasis, or effusion) were reviewed. In 14 patients perfusion defects were substantially smaller than the corresponding radiographic opacity; on...

journal_title：Radiology

authors： Biello DR,Mattar AG,Osei-Wusu A,Alderson PO,McNeil BJ,Siegel BA

更新日期：1979-10-01 00:00:00

abstract：PURPOSE:To determine the ultrasonographic (US) findings of normal and acutely torn posterior cruciate ligament (PCL) of the knee and evaluate the usefulness of US in the injured PCL. MATERIALS AND METHODS:US images were obtained in 30 knees in 15 asymptomatic volunteers as a control group and in 35 patients clinically...

journal_title：Radiology

authors： Cho KH,Lee DC,Chhem RK,Kim SD,Bouffard JA,Cardinal E,Park BH

更新日期：2001-05-01 00:00:00

abstract：:Californium 252 low dose rate intracavitary neutron implants combined with conventional external beam therapy for advanced pelvic tumors produced better local response than 137Cs in pelvic brachytherapy. Greater tumor regression was achieved by applying 252Cf while the maximum amount of tumor was present preceding or ...

journal_title：Radiology

authors： Maruyama Y

更新日期：1979-11-01 00:00:00

abstract：:The preangiographic diagnosis of cerebral dural arteriovenous fistula (DAVF) can be difficult. The magnetic resonance (MR) images of 12 patients with angiographically proved DAVF were evaluated to characterize the appearance of these lesions and to identify those patients at increased risk for complications. Patients ...

journal_title：Radiology

authors： De Marco JK,Dillon WP,Halback VV,Tsuruda JS

更新日期：1990-04-01 00:00:00

abstract：:A new software program provides the real-time display of high-resolution computed tomographic reformation in the axial, coronal, sagittal, or oblique views. The advantages of this new technique over the standard multiplanar format include (a) larger image display format, (b) reconstruction of entire dataset for each o...

journal_title：Radiology

authors： Ney DR,Fishman EK,Magid D,Kuhlman JE

更新日期：1989-01-01 00:00:00

abstract：:The Radiation Oncology Center in Sacramento, California, has developed a procedure for establishing an intraoperative radiation therapy facility in a community practice. The logistics pertaining to personnel, equipment, physical measurements, and quality assurance are presented. Particular emphasis is given to the mos...

journal_title：Radiology

authors： Wolkov HB,Chenery SG,Asche DR,McPeek EC,Hanks GE,Holmes TW

更新日期：1988-07-01 00:00:00

abstract：:Thin-section tomography in the lateral and off-lateral projections permits radiographic visualization of the vestibular aqueduct, which is seen as an inverted J. The proximal curved portion has a constant configuration, while the distal straight portion varies according to the width of the external aperture and may be...

journal_title：Radiology

authors： Gado MH,Arenberg IK

更新日期：1975-12-01 00:00:00

abstract：:Remote viewing of ultrasound scans facilitates assessment of a student's technique while minimizing anxiety for both him and the patient. This method may also be effective for the busy physician who must monitor several procedures at the same time. ...

journal_title：Radiology

authors： Raskin MM,Vining PE

更新日期：1979-07-01 00:00:00

abstract：:HistoryA 55-year-old man with a history of chronic pancreatitis secondary to chronic alcohol abuse presented to the hospital with acute abdominal pain, generalized weakness, weight loss, and pyrexia. A clinical examination revealed he was tender to touch in the upper abdomen. Laboratory tests revealed a serum alkaline...

journal_title：Radiology

authors： Aguilar HN,Manolea F,Patel VH,Low G

更新日期：2020-01-01 00:00:00

abstract：PURPOSE:To investigate the potential application of contrast material-enhanced three-dimensional (3D) ultrasonography (US), as compared with contrast-enhanced 3D computed tomography (CT), for characterization of focal liver tumors. MATERIALS AND METHODS:Institutional review board approval and informed patient consent ...

journal_title：Radiology

authors： Luo W,Numata K,Morimoto M,Kondo M,Takebayashi S,Okada M,Morita S,Tanaka K

更新日期：2009-04-01 00:00:00

abstract：PURPOSE:To develop and demonstrate a method for regional evaluation of pulmonary perfusion and gas exchange based on intravenous injection of hyperpolarized xenon 129 ((129)Xe) and subsequent magnetic resonance (MR) imaging of the gas-phase (129)Xe emerging in the alveolar airspaces. MATERIALS AND METHODS:Five Fischer...

journal_title：Radiology

authors： Driehuys B,Möller HE,Cleveland ZI,Pollaro J,Hedlund LW

更新日期：2009-08-01 00:00:00