Central nervous system lesions biopsied or treated by CT-guided needle placement.

abstract：PURPOSE:To compare the success and infection rates of radiologic placement with those of surgical placement of tunneled central venous access catheters (TCVACs) in infants and small children. MATERIALS AND METHODS:In 17 pediatric patients, TCVACs were placed with vascular access under ultrasound or fluoroscopic guidan...

journal_title：Radiology

authors： Nosher JL,Shami MM,Siegel RL,DeCandia M,Bodner LJ

更新日期：1994-07-01 00:00:00

abstract：PURPOSE:To investigate the challenges and benefits of magnetic resonance (MR) imaging during brain tumor resection. MATERIALS AND METHODS:A short-bore 1.5-T MR system equipped with echo-planar-capable gradients was used in resection of brain tumors in 30 patients. MR sequences and need for contrast material enhancemen...

journal_title：Radiology

authors： Martin AJ,Hall WA,Liu H,Pozza CH,Michel E,Casey SO,Maxwell RE,Truwit CL

更新日期：2000-04-01 00:00:00

abstract：PURPOSE:To retrospectively analyze serial chest radiographs in all patients with severe acute respiratory syndrome (SARS) in Hong Kong for temporal changes and differences between patients who died and those who were discharged from the hospital and to compare radiographic and clinical parameters. MATERIALS AND METHOD...

journal_title：Radiology

authors： Antonio GE,Ooi CG,Wong KT,Tsui EL,Wong JS,Sy AN,Hui JY,Chan CY,Huang HY,Chan YF,Wong TP,Leong LL,Chan JC,Ahuja AT

更新日期：2005-12-01 00:00:00

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...

journal_title：Radiology

authors： Kodera Y,Doi K,Chan HP

更新日期：1984-04-01 00:00:00

abstract：:The incidental radiation dose of lithium fluoride thermoluminescence dosimeters was recorded during 15 treatments of patients with auricular keloids. Two half-value layers were used, and the results were compared. In both instances, the homolateral lens and thyroid received twice the contralateral dose. The oropharynx...

journal_title：Radiology

authors： Fitzgerald RH Jr,Tuten TU,Fenn JO

更新日期：1982-08-01 00:00:00

abstract：:Krypton-81m, an inert, radioactive gas with a physical half-life of 13 seconds was used to evaluate regional lung ventilation in 25 pediatric patients. The results suggest that Kr-81m has several advantages over previous methods employing xenon-133. These include: more favorable physical characteristics for imaging wi...

journal_title：Radiology

authors： Li DK,Treves S,Heyman S,Kirkpatrick JA Jr,Lambrecht RM,Ruth TJ,Wolf AP

更新日期：1979-03-01 00:00:00

abstract：:A linear-array, silicon pixel detector, capable of counting single photons, was applied to mammography by using a synchrotron radiation beam. Images were obtained of both a mammographic phantom and a breast-tissue sample. The phantom image was acquired with a mean glandular dose of 0.32 mGy. This detector combined wit...

journal_title：Radiology

authors： Arfelli F,Bonvicini V,Bravin A,Cantatore G,Castelli E,Dalla Palma L,Di Michiel M,Longo R,Olivo A,Pani S,Pontoni D,Poropat P,Prest M,Rashevsky A,Tromba G,Vacchi A

更新日期：1998-09-01 00:00:00

abstract：:Medical therapy is standard for intrahepatic amebic abscess and generally is effective. However, we have encountered a group of patients in whom percutaneous aspiration and drainage was indicated due to uncertainty of diagnosis or clinical deterioration of the patient. Twenty such patients underwent percutaneous drain...

journal_title：Radiology

authors： vanSonnenberg E,Mueller PR,Schiffman HR,Ferrucci JT Jr,Casola G,Simeone JF,Cabrera OA,Gosink BB

更新日期：1985-09-01 00:00:00

abstract：:The findings on images of liposarcomas of the extremities in 48 patients (26 men and 22 women aged 20-85 years) were reviewed to correlate the histologic subtypes with radiologic appearance. Computed tomographic scans were obtained in 36 patients; magnetic resonance (MR) images, in 27 patients. The study group had 19 ...

journal_title：Radiology

authors： Jelinek JS,Kransdorf MJ,Shmookler BM,Aboulafia AJ,Malawer MM

更新日期：1993-02-01 00:00:00

abstract：PURPOSE:To determine if the addition of three-dimensional (3D) proton magnetic resonance (MR) spectroscopic imaging to endorectal MR imaging helps diagnose extracapsular extension (ECE) of prostate cancer. MATERIALS AND METHODS:Endorectal MR imaging and 3D MR spectroscopic imaging were performed in 53 patients with pr...

journal_title：Radiology

authors： Yu KK,Scheidler J,Hricak H,Vigneron DB,Zaloudek CJ,Males RG,Nelson SJ,Carroll PR,Kurhanewicz J

更新日期：1999-11-01 00:00:00

abstract：PURPOSE:To evaluate the portal and arterial blood supplies to dysplastic nodules in the cirrhotic liver with computed tomography (CT) during arterial portography (CTAP) and CT hepatic arteriography (CTHA). MATERIALS AND METHODS:Nineteen histopathologically proved low-grade dysplastic nodules and 13 high-grade dysplast...

journal_title：Radiology

authors： Lim JH,Cho JM,Kim EY,Park CK

更新日期：2000-03-01 00:00:00

abstract：PURPOSE:To characterize the magnetic resonance (MR) imaging response of brain metastases after gamma knife stereotactic radiosurgery and determine whether imaging features and tumor response rates correlate with local tumor control and survival. MATERIALS AND METHODS:Serial MR examinations were performed in 48 patient...

journal_title：Radiology

authors： Peterson AM,Meltzer CC,Evanson EJ,Flickinger JC,Kondziolka D

更新日期：1999-06-01 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：:A metastatic tumor in the right ventricle was clearly visualized using two-dimensional echocardiography. The location, size, and mobility of the tumor were easily demonstrated. Two-dimensional echocardiography is superior to M-mode echocardiography in such cases. ...

journal_title：Radiology

authors： Jaffe CC,Kelley MJ,Taunt KA

更新日期：1978-11-01 00:00:00

abstract：:An angiographic system capable of simultaneous biplane stereoscopic magnification cerebral angiography was evaluated. Stereoscopic imaging improved the morphologic depiction of aneurysms and of arteriovenous malformations. In a series of 357 patients, procedure time was reduced because the initial biplane stereoscopic...

journal_title：Radiology

authors： Kleefield J,O'Reilly GV,Barsotti JB,Brooks ML

更新日期：1987-11-01 00:00:00

abstract：:Computed tomographic metrizamide myelography (CTMM) was performed on 25 infants and children and 2 adults with normal spinal cords. Both the cord and the cauda equina were precisely outlined. The most detailed information was obtained with a small window setting, with the image subsequently magnified and color-reverse...

journal_title：Radiology

authors： Resjö IM,Harwood-Nash DC,Fitz CR,Chuang S

更新日期：1979-03-01 00:00:00

abstract：:Purpose To investigate whether sinovenous outflow restriction (SOR) is more strongly associated with hemorrhage than cortical venous reflux (CVR) in patients with lateral sinus dural arteriovenous fistulas (DAVFs). Materials and Methods An institutional review board approved this retrospective study and waiver of info...

journal_title：Radiology

authors： Hu YS,Lin CJ,Wu HM,Guo WY,Luo CB,Wu CC,Chung WY,Liu KD,Yang HC,Lee CC

更新日期：2017-11-01 00:00:00

abstract：:The measurement of supine pedal venous pressure as a screening test for deep venous thrombosis is re-evaluated. In 83 extremities studied in 50 patients, the false-positive rate was 62%, the false-negative rate 8%. Chronic venous disease, whatever its etiology but particularly in association with the post-phlebitis sy...

journal_title：Radiology

authors： Martin EC,Cohen L,Sawyer PN,Gordon DH

更新日期：1979-04-01 00:00:00

abstract：PURPOSE:To retrospectively evaluate the role of computer-aided detection (CAD) in reducing the rate of false-negative (FN) findings on screening mammograms considered normal at initial double reading. MATERIALS AND METHODS:At the authors' institution, independent prospective double readings in which the second reader ...

journal_title：Radiology

authors： Destounis SV,DiNitto P,Logan-Young W,Bonaccio E,Zuley ML,Willison KM

更新日期：2004-08-01 00:00:00

abstract：:Hirschprung disease is usually diagnosed in infancy. Occasionally patients reach adulthood without diagnosis or treatment. Four cases of adult Hirschprung disease are described. The principal radiographic findings are a markedly dilated, feces-filled colon above the zone of transition; a narrowed rectum; a cone- or fu...

journal_title：Radiology

authors： Mindelzun RE,Hicks SM

更新日期：1986-09-01 00:00:00

abstract：PURPOSE:To identify mechanism(s) responsible for carpal tunnel syndrome (CTS). MATERIALS AND METHODS:At dynamic gadolinium-enhanced magnetic resonance (MR) imaging, the enhancement pattern of the sagittal section of the median nerve in 10 wrists of nine patients with CTS (two men and seven women, aged 43-60 years [mea...

journal_title：Radiology

authors： Sugimoto H,Miyaji N,Ohsawa T

更新日期：1994-02-01 00:00:00

abstract：:Severe peripheral vasoconstriction of the legs due to hypersensitivity to small doses of ergotamine tartrate developed in a patient with migraine headaches. The vasospasm was successfully treated with continuous intra-arterial and intravenous infusion of sodium nitroprusside. The contribution of angiography in the dia...

journal_title：Radiology

authors： O'Dell CW,Davis GB,Johnson AD,Safdi MA,Brant-Zawadzki M,Bookstein JJ

更新日期：1977-07-01 00:00:00

abstract：PURPOSE:To investigate how changes in kilovolt peak and milliampere second settings, and patient weight affect transmitted x-ray energy fluence and the image contrast-to-noise ratio (CNR) at abdominal computed tomography (CT). MATERIALS AND METHODS:Cylinders of water were used as patient models, and x-ray spectra, inc...

journal_title：Radiology

authors： Huda W,Scalzetti EM,Levin G

更新日期：2000-11-01 00:00:00

abstract：:Complications of indwelling ureteral stents were managed percutaneously in 13 patients. These complications consisted of three fractured, three heavily encrusted, and seven migrated stents. While most ureteral stent malfunctions are routinely managed with retrograde techniques, the percutaneous approach allows effecti...

journal_title：Radiology

authors： LeRoy AJ,Williams HJ Jr,Segura JW,Patterson DE,Benson RC Jr

更新日期：1986-01-01 00:00:00

abstract：PURPOSE:To prospectively evaluate multiobserver diagnostic performance and reader agreement for colorectal polyp detection in a well-characterized cohort of patients with increased number of polyps, compared with an average-risk patient, with colonoscopy as the reference standard. MATERIALS AND METHODS:A cohort of 70 ...

journal_title：Radiology

authors： McFarland EG,Pilgram TK,Brink JA,McDermott RA,Santillan CV,Brady PW,Heiken JP,Balfe DM,Weinstock LB,Thyssen EP,Littenberg B

更新日期：2002-11-01 00:00:00

abstract：PURPOSE:To evaluate the prevalence of testicular microlithiasis (TM) in children who have undergone scrotal ultrasonography (US) and their association with testicular tumors. MATERIALS AND METHODS:This HIPAA-compliant study with waiver of informed consent was approved by the institutional review board. From 2003 to 20...

journal_title：Radiology

authors： Cooper ML,Kaefer M,Fan R,Rink RC,Jennings SG,Karmazyn B

更新日期：2014-03-01 00:00:00

abstract：:Two patients with large arteriovenous malformations (AVM) were successfully treated by transcatheter selective arterial embolization with Gelfoam. An extensive lumbar retroperitoneal acquired AVM was markedly reduced, eliminating any clinical evidence of a persistent left-to-right shunt. A large localized congenital A...

journal_title：Radiology

authors： Stanley RJ,Cubillo E

更新日期：1975-06-01 00:00:00

abstract：:Of the 67-Ga scans obtained in 42 patients with fever and suspected inflammatory lesions, 17 were positive. In 9 patients the scans yielded information about localized inflammation not provided by previous studies. Four patients did not have an inflammatory lesion at the positive site. Ten of 13 abscesses or inflamed ...

journal_title：Radiology

authors： Teates CD,Hunter JG Jr

更新日期：1975-08-01 00:00:00

abstract：PURPOSE:To evaluate possible radiation dose reduction in the extremities with use of digital radiography and a needle-structured image plate (NIP) by comparing this technique with digital radiography performed with a powder-structured image plate (PIP) and a flat-panel detector (FPD). MATERIALS AND METHODS:This study ...

journal_title：Radiology

authors： Wirth S,Treitl M,Reiser MF,Körner M

更新日期：2009-01-01 00:00:00

abstract：:A new technique for the determination of bone mineral density, based on the detection of both coherently and Compton scattered photons in a narrow beam geometry, is described. Initial results show that this method delivers an accuracy of less than 2% when varying quantities of materials surround the measuring site. ...

journal_title：Radiology

authors： Puumalainen P,Uimarihuhta A,Olkkonen H

更新日期：1976-09-01 00:00:00