Dedicated breast CT: radiation dose and image quality evaluation.

abstract：PURPOSE:To estimate the cost-effectiveness of computed tomographic (CT) colonography for colorectal cancer (CRC) screening in average-risk asymptomatic subjects in the United States aged 50 years. MATERIALS AND METHODS:Enrollees in the American College of Radiology Imaging Network National CT Colonography Trial provid...

journal_title：Radiology

authors： Vanness DJ,Knudsen AB,Lansdorp-Vogelaar I,Rutter CM,Gareen IF,Herman BA,Kuntz KM,Zauber AG,van Ballegooijen M,Feuer EJ,Chen MH,Johnson CD

更新日期：2011-11-01 00:00:00

abstract：PURPOSE:To differentiate prostate cancers of different histopathologic grades with dynamic gadolinium-enhanced magnetic resonance (MR) imaging. Results with a conventional small-molecular contrast medium (CM) were compared to those with a prototypic macromolecular CM. MATERIALS AND METHODS:High- and low-grade tumors, ...

journal_title：Radiology

authors： Gossmann A,Okuhata Y,Shames DM,Helbich TH,Roberts TP,Wendland MF,Huber S,Brasch RC

更新日期：1999-10-01 00:00:00

abstract：PURPOSE:To determine the diagnostic performance of diffusion-weighted (DW) imaging for the prediction of treatment failure in primary head and neck squamous cell carcinoma (HNSCC). MATERIALS AND METHODS:The study was approved by the local institutional ethics committee and conducted with informed written consent in pa...

journal_title：Radiology

authors： King AD,Chow KK,Yu KH,Mo FK,Yeung DK,Yuan J,Bhatia KS,Vlantis AC,Ahuja AT

更新日期：2013-02-01 00:00:00

abstract：:Obliteration of varicoceles in men with infertility has been shown to improve semen quality and increase fertility rates. Many current techniques involve complex procedures and specialized equipment and may be associated with adverse effects. Transcatheter thermal vessel occlusion was utilized for spermatic vein oblit...

journal_title：Radiology

authors： Rholl KS,Rysavy JA,Vlodaver Z,Cragg AH,Castaneda-Zuniga WR,Amplatz K

更新日期：1983-07-01 00:00:00

abstract：PURPOSE:To determine the safety and diagnostic accuracy of a provocative protocol with heparin and urokinase to induce bleeding and determine the source in patients with chronic gastrointestinal hemorrhage. MATERIALS AND METHODS:Nine patients had gastrointestinal bleeding from an indeterminate source and had negative ...

journal_title：Radiology

authors： Malden ES,Hicks ME,Royal HD,Aliperti G,Allen BT,Picus D

更新日期：1998-04-01 00:00:00

abstract：PURPOSE:To investigate the association between cumulative operator volume and the risk of hepatocellular carcinoma (HCC) recurrence after potentially curative radiofrequency ablation (RFA). MATERIALS AND METHODS:This study was approved by the Research Ethics Committee. By using the Taiwan National Health Insurance Res...

journal_title：Radiology

authors： Lee TY,Lin JT,Ho HJ,Wu MS,Wu CY

更新日期：2015-07-01 00:00:00

abstract：:Gas cisternography was combined with edge-enhanced computed tomography (CT) in 6 patients and demonstrated the seventh and eighth cranial nerves thorugh both the cerebellopontine angle cistern and the internal auditory canal in the normal patients. The normal nerve outline was lost when a tumor was contained within th...

journal_title：Radiology

authors： Bentson JR,Mancuso AA,Winter J,Hanafee WN

更新日期：1980-09-01 00:00:00

abstract：:The records of 71 patients with adenoid cystic carcinoma of the salivary glands were reviewed to determine the dose response relationships for this aggressive tumor. Local control after treatment was determined for all patients and analyzed with respect to extent of surgery and dose of radiation. Of 70 patients who we...

journal_title：Radiology

authors： Simpson JR,Thawley SE,Matsuba HM

更新日期：1984-05-01 00:00:00

abstract：:Shoulder disease is common in the athletic population and may arise as a consequence of a single traumatic episode or multiple repeated events. Associated labroligamentous injuries can result in substantial disability. Specific athletic and occupational activities result in predictable injury patterns. Imaging in gene...

journal_title：Radiology

authors： Roy EA,Cheyne I,Andrews GT,Forster BB

更新日期：2016-02-01 00:00:00

abstract：:Background MRI with hepatobiliary contrast material is more sensitive than MRI with extracellular contrast material in the detection of hepatocellular carcinoma (HCC). Purpose To determine whether postsurgical outcomes differ between patients who undergo MRI with hepatobiliary contrast material and those who undergo M...

journal_title：Radiology

authors： Kim DK,An C,Chung YE,Choi JY,Lim JS,Park MS,Kim MJ

更新日期：2019-12-01 00:00:00

abstract：:A prospective, comparative study was made of the efficacy of technetium-99m pyrophosphate (Tc PYP) and technetium-99m methylene diphosphonate (Tc MDP) in detecting soft-tissue amyloidosis. Tc PYP and Tc MDP scans were obtained within ten-day intervals in seven patients with histologically proven amyloidosis. Tc PYP wa...

journal_title：Radiology

authors： Lee VW,Caldarone AG,Falk RH,Rubinow A,Cohen AS

更新日期：1983-07-01 00:00:00

abstract：:High fecal impaction resulted in complete bowel obstruction in 2 children following renal transplantation and in one adult on chemotherapy and narcotics. The usual methods of relief failed, and water-soluble contrast enemas with a high osmolality were employed. Fluoroscopic control assured placement of the enema fluid...

journal_title：Radiology

authors： Culp WC

更新日期：1975-04-01 00:00:00

abstract：:Ten patients suspected of having cervical carcinoma underwent magnetic resonance (MR) imaging before and after opacification of the vagina with a mixture of barium, water, and maltodextrin/calcium lactate. Use of vaginal contrast medium resulted in improved visualization of the vaginal wall, lumen, and fornices in all...

journal_title：Radiology

authors： Van Hoe L,Vanbeckevoort D,Oyen R,Itzlinger U,Vergote I

更新日期：1999-11-01 00:00:00

abstract：:The use of intensity-modulated radiation therapy for treatment of dominant intraprostatic lesions may require integration of functional magnetic resonance (MR) imaging with treatment-planning computed tomography (CT). The purpose of this study was to compare prospectively the landmark and iterative closest point metho...

journal_title：Radiology

authors： Huisman HJ,Fütterer JJ,van Lin EN,Welmers A,Scheenen TW,van Dalen JA,Visser AG,Witjes JA,Barentsz JO

更新日期：2005-07-01 00:00:00

abstract：:Measurements of the intensity distribution of a 60-Co beam revealed a significant field distortion caused by minor misalignment of the collimator assembly which was not detected by routine methods. Accurate monitoring of radiation intensity distribution and periodic visual inspection of collimators are suggested for ...

journal_title：Radiology

authors： Zeman GH,Rao GU,Hazra TA

更新日期：1975-07-01 00:00:00

abstract：PURPOSE:To determine if prominent vascularity and low pulsatility index (PI) and resistive index (RI) in endometrial arteries help differentiate carcinoma from benign lesions. MATERIALS AND METHODS:Forty-five postmenopausal women with at least 8-mm-thick endometrium at endovaginal ultrasound (US) underwent color duple...

journal_title：Radiology

authors： Sheth S,Hamper UM,McCollum ME,Caskey CI,Rosenshein NB,Kurman RJ

更新日期：1995-06-01 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 determine the visibility of presumably excised lesions on screen-film mammograms obtained after biopsy and to determine the accuracy of clip deployment on the basis of measurements obtained on routine pre- and postbiopsy mammograms. MATERIALS AND METHODS:One hundred eleven cases of core-needle biopsy with c...

journal_title：Radiology

authors： Rosen EL,Vo TT

更新日期：2001-02-01 00:00:00

abstract：PURPOSE:To determine the effect of the interpretation of plain chest radiographs on the time to definitive diagnosis of aortic dissection. MATERIALS AND METHODS:The authors evaluated chest radiographs from 75 patients in whom chest radiography was performed before aortic dissection was diagnosed. The radiographs and a...

journal_title：Radiology

authors： Luker GD,Glazer HS,Eagar G,Gutierrez FR,Sagel SS

更新日期：1994-12-01 00:00:00

abstract：PURPOSE:To determine whether contrast material-enhanced helical computed tomography (CT) of the thorax and upper abdomen changes the tumor stage and management compared with nonenhanced helical CT in patients with newly diagnosed lung cancer. MATERIALS AND METHODS:During 15 months, any patient in whom lung cancer was ...

journal_title：Radiology

authors： Patz EF Jr,Erasmus JJ,McAdams HP,Connolly JE,Marom EM,Goodman PC,Leder RA,Keogan MT,Herndon JE

更新日期：1999-07-01 00:00:00

abstract：:Twenty-nine patients with known or suspected malignancy were studied with identical T1-weighted (spin echo [SE] and inversion recovery [IR]) and T2-weighted SE magnetic resonance (MR) imaging at 0.5 and 1.5 T to evaluate the relative sensitivities of these sequences for detecting focal hepatic lesions. At 0.5 T, 98 le...

journal_title：Radiology

authors： Steinberg HV,Alarcon JJ,Bernardino ME

更新日期：1990-01-01 00:00:00

abstract：:The purpose of this study was to construct and evaluate a phantom for measurement of magnetic resonance (MR) imaging sections with thicknesses of 0.3-0.6 mm. The phantom consisted of 304 0.1-mm-thick disks, each of which had a single notch filled with a diluted solution of gadopentetate dimeglumine. Qualitative and qu...

journal_title：Radiology

authors： Lemke AJ,Kazi I,de Bary P,Bernhardt U,Foerster PI,Foerster M,Felix R

更新日期：2006-08-01 00:00:00

abstract：PURPOSE:To assess the clinical usefulness of localized proton (hydrogen 1) magnetic resonance (MR) spectroscopy in the characterization of contrast material-enhanced breast lesions on the basis of choline detection. MATERIALS AND METHODS:Examinations were performed at 1.5 T with use of a standard breast coil. Contrast...

journal_title：Radiology

authors： Yeung DK,Cheung HS,Tse GM

更新日期：2001-07-01 00:00:00

abstract：:One hundred fifty-four patients with stenosis of the iliac artery underwent percutaneous transluminal angioplasty (PTA). These patients were followed for 1-7 years. The long-term results of the PTAs were analyzed by computer, and life tables were generated for dilatations of the iliac arteries with unimpaired flow and...

journal_title：Radiology

authors： van Andel GJ,van Erp WF,Krepel VM,Breslau PJ

更新日期：1985-08-01 00:00:00

abstract：:Paraffin block radiography has been shown to be useful in helping identify lesions in biopsy specimens of breast tissue. Use of an orthogonal view enables determination of the approximate depth of a lesion within a paraffin block. This simple technique further guarantees histologic evaluation of the area of radiograph...

journal_title：Radiology

authors： Cardenosa G,Eklund GW

更新日期：1991-09-01 00:00:00

abstract：:The authors describe an adaptive motion correction method for three-dimensional magnetic resonance (MR) imaging. Three-dimensional imaging offers many advantages over two-dimensional multisection imaging but is susceptible to image corruption due to motion. Thus, it has been of limited use in the imaging of mobile str...

journal_title：Radiology

authors： Korin HW,Felmlee JP,Ehman RL,Riederer SJ

更新日期：1990-10-01 00:00:00

abstract：:Background Chest CT is used in the diagnosis of coronavirus disease 2019 (COVID-19) and is an important complement to reverse-transcription polymerase chain reaction (RT-PCR) tests. Purpose To investigate the diagnostic value and consistency of chest CT as compared with RT-PCR assay in COVID-19. Materials and Methods ...

journal_title：Radiology

authors： Ai T,Yang Z,Hou H,Zhan C,Chen C,Lv W,Tao Q,Sun Z,Xia L

更新日期：2020-08-01 00:00:00

abstract：PURPOSE:To evaluate the potential of anti-human epidermal growth factor receptor (HER)1- and anti-HER2-targeted radiolabeled antibodies and magnetic resonance (MR) imaging for imaging of orthotopic malignant pleural mesothelioma (MPM) in mouse models. MATERIALS AND METHODS:Animal studies with 165 mice were performed i...

journal_title：Radiology

authors： Nayak TK,Bernardo M,Milenic DE,Choyke PL,Brechbiel MW

更新日期：2013-04-01 00:00:00

abstract：PURPOSE:To compare lung densitometric measurements that use a three-dimensional (3D) reconstruction of the lungs with those obtained from analysis of two-dimensional (2D) computed tomographic (CT) images, visual emphysema scores, and data from pulmonary function tests. MATERIALS AND METHODS:Thoracic helical CT scans w...

journal_title：Radiology

authors： Park KJ,Bergin CJ,Clausen JL

更新日期：1999-05-01 00:00:00

abstract：PURPOSE:To study white matter (WM) changes in patients with Unverricht-Lundborg progressive myoclonus epilepsy (EPM1) caused by mutations in the cystatin B gene and in the cystatin B-deficient (Cstb-/-) mouse model and to validate imaging findings with histopathologic analysis of mice. MATERIALS AND METHODS:Informed c...

journal_title：Radiology

authors： Manninen O,Koskenkorva P,Lehtimäki KK,Hyppönen J,Könönen M,Laitinen T,Kalimo H,Kopra O,Kälviäinen R,Gröhn O,Lehesjoki AE,Vanninen R

更新日期：2013-10-01 00:00:00