Collimator misalignment in high energy therapy machines.

abstract：:Background In the absence of randomized studies, it has been controversial whether the likelihood of acute kidney injury (AKI) differs between intravenous and intra-arterial contrast agent administration. Purpose To compare intravenous versus intra-arterial contrast agent administration in relationship to AKI and anal...

journal_title：Radiology

authors： Schönenberger E,Martus P,Bosserdt M,Zimmermann E,Tauber R,Laule M,Dewey M

更新日期：2019-09-01 00:00:00

abstract：:While high-resolution CT/air cisternography is considered the preferred method of investigating non-enhancing or small acoustic neuromas, it is not without pitfalls. Eighty such studies were reviewed, emphasizing procedural problems and sources of interpretive error. Two patients presented difficulty in transporting t...

journal_title：Radiology

authors： Johnson DW

更新日期：1984-05-01 00:00:00

abstract：:To avoid the disadvantages associated with use of the traditional percutaneous transhepatic cholangiography (PTC) needle in ultrasonically guided percutaneous ethanol injection therapy (PEIT) for hepatocellular carcinoma, the authors developed a needle with a three-sided tip and three holes within 3 mm of the tip. In ...

journal_title：Radiology

authors： Akamatsu K,Miyauchi S,Ito Y,Ohkubo K,Maruyama M

更新日期：1993-01-01 00:00:00

abstract：PURPOSE:To determine whether a 10-minute magnetic resonance (MR) imaging examination of the upper abdomen provides sufficiently comprehensive information to replace a longer MR protocol. MATERIALS AND METHODS:Images obtained with selected breathing-independent and breath hold MR sequences, with 2 minutes of total acqu...

journal_title：Radiology

authors： Semelka RC,Balci NC,Op de Beeck B,Reinhold C

更新日期：1999-04-01 00:00:00

abstract：:Background Modern high-spatial-resolution radiologic methods enable increasingly detailed volumetric postmortem investigations of human neuroanatomy for diagnostic, research, and educational purposes. Purpose To evaluate the viability of postmortem x-ray phase-contrast micro-CT to provide tissue-conserving, high-spati...

journal_title：Radiology

authors： Barbone GE,Bravin A,Mittone A,Grosu S,Ricke J,Cavaletti G,Djonov V,Coan P

更新日期：2021-01-01 00:00:00

abstract：:Purpose To determine whether fructose 1,6-bisphosphatase 1 (FBP1) expression is associated with fluorine 18 (18F) fluorodeoxyglucose (FDG) accumulation in patients with hepatocellular carcinoma (HCC) and to investigate how FBP1 expression and 18F FDG uptake are related to tumor differentiation grade and metabolism and...

journal_title：Radiology

authors： Chen R,Li J,Zhou X,Liu J,Huang G

更新日期：2017-09-01 00:00:00

abstract：:The authors evaluated the safety and efficacy of a biopsy gun for performance of image-guided percutaneous biopsy of hepatic allografts in liver transplant recipients. Two hundred fifty-two liver biopsies were performed in 58 transplant recipients over a 27-month period by using this instrument with an 18-gauge needle...

journal_title：Radiology

authors： Chezmar JL,Keith LL,Nelson RC,Plaire JC,Hertzler GL,Bernardino ME

更新日期：1991-05-01 00:00:00

abstract：:Magnetic resonance (MR) images and computed tomograms of 25 patients with head trauma were compared. MR proved to be superior in many ways for demonstrating extracerebral as well as intracerebral traumatic lesions. Isodense subdural hematomas, which present a diagnostic dilemma on CT images were clearly seen on MR, re...

journal_title：Radiology

authors： Han JS,Kaufman B,Alfidi RJ,Yeung HN,Benson JE,Haaga JR,El Yousef SJ,Clampitt ME,Bonstelle CT,Huss R

更新日期：1984-01-01 00:00:00

abstract：:Differences in magnetic resonance (MR) imaging signal-to-noise (S/N) performance between saddle-shaped and solenoidal coils have been postulated. Each coil shape is tied to a particular magnetic field configuration, so that they are not typically interchangeable except in special situations. The solenoidal coil is pre...

journal_title：Radiology

authors： Arakawa M,Crooks LE,McCarten B,Hoenninger JC,Watts JC,Kaufman L

更新日期：1985-01-01 00:00:00

abstract：PURPOSE:To develop a noninvasive method for demonstrating the main salivary gland duct systems. MATERIALS AND METHODS:The authors developed a magnetic resonance (MR) imaging protocol that uses a heavily T2-weighted (echo time, 750 msec), fat-suppressed pulse sequence and rapid acquisition with relaxation enhancement. ...

journal_title：Radiology

authors： Lomas DJ,Carroll NR,Johnson G,Antoun NM,Freer CE

更新日期：1996-07-01 00:00:00

abstract：PURPOSE:To compare the clinical effectiveness of a covered nitinol stent with that of a polyurethane stent for treatment of lacrimal system obstructions. MATERIALS AND METHODS:A nitinol stent was knit from a single thread of 0.1-mm nitinol wire in a tubular configuration and was covered by dipping the stent into a pol...

journal_title：Radiology

authors： Ko GY,Song HY,Seo TS,Kim TH,Sung KB,Yoon HK

更新日期：2003-04-01 00:00:00

abstract：PURPOSE:To prospectively determine if kinematic magnetic resonance (MR) imaging of the knee may demonstrate displacement of menisci with tears and, if so, to characterize displaceable and nondisplaceable meniscal tears. MATERIALS AND METHODS:The study was approved by the hospital's review board, and informed consent w...

journal_title：Radiology

authors： Boxheimer L,Lutz AM,Zanetti M,Treiber K,Labler L,Marincek B,Weishaupt D

更新日期：2006-01-01 00:00:00

abstract：:Tissue culture techniques were used to study the effect of hyperthermia on several cell types, including normal liver and hepatoma cells, as well as cell lines that have been established in culture for many years. Short exposures (less than 30 min.) at 45 degrees C readily kill a large proportion of cells. The respons...

journal_title：Radiology

authors： Harisiadis L,Hall EJ,Kraljevic U,Borek C

更新日期：1975-11-01 00:00:00

abstract：PURPOSE:To test the hypothesis that computed tomographic (CT) scanning during early rather than middle diastole can significantly reduce the interscan variability of coronary artery calcium (CAC) scores. MATERIALS AND METHODS:Five hundred thirty-eight patients were initially enrolled; 282 of them were found to have CA...

journal_title：Radiology

authors： Mao S,Bakhsheshi H,Lu B,Liu SC,Oudiz RJ,Budoff MJ

更新日期：2001-09-01 00:00:00

abstract：:Four nodules, visualized with 99mTc pertechnetate at 20-60 min., were not visualized with either 123I or 131I at 2-4 hours. Each nodule was demonstrated to have autonomy of function in excess of surrounding normal tissue when imaged with radioiodine after TSH suppression. Rapid turnover of an iodine moiety would seem ...

journal_title：Radiology

authors： Miller JM,Kasenter AG,Marks DS

更新日期：1976-06-01 00:00:00

abstract：:Laboratory tests that are commonly used in the evaluation of rheumatic diseases are described. The techniques for performing these tests; their use in screening, diagnosis, and follow-up; and the pitfalls in interpreting their results are discussed to provide the radiologist with an understanding of the current techno...

journal_title：Radiology

authors： Sack KE,Genant HK

更新日期：1981-06-01 00:00:00

abstract：:Between January 1981 and June 1990, 36 previously untreated patients with squamous cancer of the base of the tongue were treated with radiation therapy. This therapy consisted of a 5,000-5,400-cGy external beam plus a 2,000-3,000-cGy boost to the base of the tongue with an iridium-192 implant. Necks with negative node...

journal_title：Radiology

authors： Harrison LB,Zelefsky MJ,Sessions RB,Fass DE,Armstrong JG,Pfister DG,Strong EW

更新日期：1992-07-01 00:00:00

abstract：PURPOSE:To test the technical feasibility and results of placement of metal stents into ureters obstructed by extensive tumor. MATERIALS AND METHODS:Six consecutive patients (two men and four women, aged 35-66 years and with incurable malignancies) underwent insertion of metallic endoprostheses in nine obstructed uret...

journal_title：Radiology

authors： vanSonnenberg E,D'Agostino HB,O'Laoide R,Donaldson J,Sanchez RB,Hoyt A,Pittman CC

更新日期：1994-06-01 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：PURPOSE:To investigate the incidence and characteristics of cerebellar injury in a cohort of very preterm infants by using the mastoid fontanelle (MF) and posterior fontanelle (PF) approach in addition to routine cranial ultrasonography (US) through the anterior fontanelle (AF), with magnetic resonance (MR) imaging as ...

journal_title：Radiology

authors： Steggerda SJ,Leijser LM,Wiggers-de Bruïne FT,van der Grond J,Walther FJ,van Wezel-Meijler G

更新日期：2009-07-01 00:00:00

abstract：PURPOSE:To evaluate the positive predictive values (PPVs) of Breast Imaging and Reporting Data Systems (BI-RADS) assessment categories for breast magnetic resonance (MR) imaging and to identify the BI-RADS MR imaging lesion features most predictive of cancer. MATERIALS AND METHODS:This institutional review board-appro...

journal_title：Radiology

authors： Mahoney MC,Gatsonis C,Hanna L,DeMartini WB,Lehman C

更新日期：2012-07-01 00:00:00

abstract：:Renal failure induced by intravenous iodinated contrast media is a frequent medical problem. While such cases are generally reported first by the clinician, the phenomenon can be seen even earlier by the radiologist. An abnormally persistent nephrogram is a sign of abnormal clearance, which in turn should alert the ph...

journal_title：Radiology

authors： Older R

更新日期：1979-05-01 00:00:00

abstract：PURPOSE:To quantitatively determine the delivery of systemic liposomal doxorubicin to tumors treated with pulsed high-intensity focused ultrasound and to study the mechanism underlying this delivery in a murine model. MATERIALS AND METHODS:All animal work was performed in compliance with guidelines and approval of ins...

journal_title：Radiology

authors： Yuh EL,Shulman SG,Mehta SA,Xie J,Chen L,Frenkel V,Bednarski MD,Li KC

更新日期：2005-02-01 00:00:00

abstract：:Purpose To determine if the allergic-like breakthrough reaction rate of intravenous corticosteroid prophylaxis administered 5 hours before contrast material-enhanced computed tomography (CT) is noninferior to that of a traditional 13-hour oral regimen. Materials and Methods Institutional review board approval was obta...

journal_title：Radiology

authors： Mervak BM,Cohan RH,Ellis JH,Khalatbari S,Davenport MS

更新日期：2017-11-01 00:00:00

abstract：PURPOSE:To assess pregnancy outcome in patients with amniotic sheets and to determine whether outcome is affected by placental implantation on the amniotic sheet. MATERIALS AND METHODS:Sonograms obtained during the 2nd and 3rd trimesters were reviewed in 157 patients with amniotic sheets to confirm the presence of an ...

journal_title：Radiology

authors： Korbin CD,Benson CB,Doubilet PM

更新日期：1998-03-01 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：:To determine the role of ultrasound (US) in patients with acute flank pain and suspected acute urinary tract obstruction, a prospective study was performed on 20 patients comparing US with emergency excretory urography. US was not as sensitive as excretory urography for diagnosing hydronephrosis, for detecting uretera...

journal_title：Radiology

authors： Laing FC,Jeffrey RB Jr,Wing VW

更新日期：1985-03-01 00:00:00

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：:Adult respiratory distress syndrome (ARDS) from overdose of tricyclic antidepressants (TCA) has been reported but is not well known. During a 1-year period, 81 patients with serious overdose from tranquilizers and other psychotropic drugs were examined. TCA alone induced overdose in 30 patients or were combined with o...

journal_title：Radiology

authors： Varnell RM,Godwin JD,Richardson ML,Vincent JM

更新日期：1989-03-01 00:00:00

abstract：PURPOSE:To increase the capabilities of ultrasonographic (US) technology for the differential diagnosis of solid breast tumors by using a neural network. MATERIALS AND METHODS:One hundred forty US images of solid breast nodules were evaluated. When a sonogram was obtained, an analog video signal from the VCR output of...

journal_title：Radiology

authors： Chen DR,Chang RF,Huang YL

更新日期：1999-11-01 00:00:00