Abdominal CT with low tube voltage: preliminary observations about radiation dose, contrast enhancement, image quality, and noise.

abstract：:Pseudostenosis of the rectosigmoid colon due to compression by a dilated urinary bladder may pose a diagnostic problem. Although probably quite common, it has not received much attention in the radiological literature. Four cases are presented and the radiological features on barium enema are described. ...

journal_title：Radiology

authors： Kleinhaus U,Kaftori J

更新日期：1978-06-01 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：:Air in the pancreas--nearly always related to an abscess or a pancreatic fistula--is rarely demonstrated. Over a 3-year period, the authors detected air in the main pancreatic duct with ultrasonography (US) in 11 patients. The ductal caliber was normal in five patients and dilated in six. At US, air in the main pancre...

journal_title：Radiology

authors： Costa PL,Righetti G

更新日期：1991-12-01 00:00:00

abstract：:"Bare sclera" excision followed by 90Sr beta irradiation has been used at Bellevue Hospital for more than 20 years as standard therapy for pterygia. Primary treatment was successful in approximately 90% of cases, and 80% of the failures were salvaged by a second course. This policy is recommended for similar patient p...

journal_title：Radiology

authors： Cooper JS

更新日期：1978-09-01 00:00:00

abstract：:Xeroradiography is an excellent technique in evaluating the fit of extremity prostheses. Because of its inherent characteristics, xeroradiography can clearly demonstrate the stump-socket relationship. Consequently, the degree of contact achieved and attendant pressure problems, if any, can be precisely determined. ...

journal_title：Radiology

authors： Jing BS,Villanueva R,Dodd GD

更新日期：1977-02-01 00:00:00

abstract：PURPOSE:To determine if patients with multiple fluid collections need every collection aspirated and if cross-contamination is a risk if separate sterile procedures are not followed for each aspiration. MATERIALS AND METHODS:Records from 1,076 imaging-guided percutaneous aspirations and drainages over 39 months were r...

journal_title：Radiology

authors： Heneghan JP,Everts RJ,Nelson RC

更新日期：1999-09-01 00:00:00

abstract：:Transrectal catheter drainage was performed under radiologic guidance in eight patients with deep pelvic abscesses during a 7-month period. One patient underwent two procedures. In five patients, the abscess could not be palpated at rectal examination. Seven procedures were performed with fluoroscopic guidance. Transr...

journal_title：Radiology

authors： Bennett JD,Kozak RI,Taylor BM,Jory TA

更新日期：1992-12-01 00:00:00

abstract：PURPOSE:To test the hypothesis that rapid and accurate performance of the proficient observer in mammogram interpretation involves a shift in the mechanism of image perception from a relatively slow search-to-find mode to a relatively fast holistic mode. MATERIALS AND METHODS:This HIPAA-compliant study had institution...

journal_title：Radiology

authors： Kundel HL,Nodine CF,Conant EF,Weinstein SP

更新日期：2007-02-01 00:00:00

abstract：PURPOSE:To correlate the in vivo hydrogen 1 ((1)H) magnetic resonance (MR) spectroscopic features of the chronic hepatitis-involved liver with the histopathologic stages of fibrosis. MATERIALS AND METHODS:Seventy-five patients with chronic hepatitis were examined with (1)H MR spectroscopy, which was performed in the r...

journal_title：Radiology

authors： Cho SG,Kim MY,Kim HJ,Kim YS,Choi W,Shin SH,Hong KC,Kim YB,Lee JH,Suh CH

更新日期：2001-12-01 00:00:00

abstract：:The blood supplies of nodular lesions associated with liver cirrhosis were analyzed in vivo with various imaging modalities. The portal blood supply was evaluated with computed tomography (CT) during arterial portography (CTAP); the arterial blood supply was evaluated with hepatic angiography, CT angiography, CT follo...

journal_title：Radiology

authors： Matsui O,Kadoya M,Kameyama T,Yoshikawa J,Takashima T,Nakanuma Y,Unoura M,Kobayashi K,Izumi R,Ida M

更新日期：1991-02-01 00:00:00

abstract：PURPOSE:To explore the association between diffuse excessive high signal intensity (DEHSI), punctate white matter (WM) lesions, and ventricular dilatation around term-equivalent age (TEA) and at clinical follow-up at 2 years in very preterm infants and the effect on neurodevelopment. MATERIALS AND METHODS:Ethical appr...

journal_title：Radiology

authors： de Bruïne FT,van den Berg-Huysmans AA,Leijser LM,Rijken M,Steggerda SJ,van der Grond J,van Wezel-Meijler G

更新日期：2011-12-01 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：:Background CT deep learning reconstruction (DLR) algorithms have been developed to remove image noise. How the DLR affects image quality and radiation dose reduction has yet to be fully investigated. Purpose To investigate a DLR algorithm's dose reduction and image quality improvement for pediatric CT. Materials and M...

journal_title：Radiology

authors： Brady SL,Trout AT,Somasundaram E,Anton CG,Li Y,Dillman JR

更新日期：2021-01-01 00:00:00

abstract：PURPOSE:To present our experience with helical computed tomographic (CT) arteriography as the initial diagnostic examination in patients suspected to have focal arterial injuries of the proximal extremities. MATERIALS AND METHODS:During 19 months, 142 arterial segments in the proximal portions of the extremities of 13...

journal_title：Radiology

authors： Soto JA,Múnera F,Morales C,Lopera JE,Holguín D,Guarín O,Castrillón G,Sanabria A,García G

更新日期：2001-01-01 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：:One hundred thirty patients with a diversity of knee joint injuries were evaluated with a high-resolution magnetic resonance (MR) imaging technique. The authors report the accuracy of this technique in the evaluation of 105 patients with suspected meniscal tears, 26 patients with suspected cruciate ligament tears, and...

journal_title：Radiology

authors： Reicher MA,Hartzman S,Bassett LW,Mandelbaum B,Duckwiler G,Gold RH

更新日期：1987-02-01 00:00:00

abstract：PURPOSE:To evaluate a percutaneous pulmonary embolism (PE) thrombectomy catheter that aspirates, macerates, and removes thrombus. MATERIALS AND METHODS:Nine in vitro tests were performed by using porcine thrombi at a PE test station that provides continuous fluid output of 2 L/min at a pressure of 50 mmHg. Macroemboli...

journal_title：Radiology

authors： Kucher N,Windecker S,Banz Y,Schmitz-Rode T,Mettler D,Meier B,Hess OM

更新日期：2005-09-01 00:00:00

abstract：:This case is reported because of the unusual blood findings, no duplicate of which I have ever seen described. Whether the blood picture represents merely a freakish poikilocytosis or is dependent on some peculiar physical or chemical condition of the blood, or is characteristic of some particular disease, I cannot at...

journal_title：Radiology

authors： Moran CJ,Siegel MJ,DeBaun MR

更新日期：1998-02-01 00:00:00

abstract：:A retrospective review of 20 cases of endoprosthesis occlusion in 17 patients was performed. The average length of stent patency before occlusion was 3.7 months. Clinical manifestations included one or a combination of the following: cholangitis (n = 17), jaundice (n = 9), and leakage of bile or purulent material from...

journal_title：Radiology

authors： Lee MJ,Mueller PR,Saini S,Morrison MC,Brink JA,Hahn PF

更新日期：1990-08-01 00:00:00

abstract：:Background The full-scale airway network (FAN) flow model shows excellent agreement with limited functional imaging data but requires further validation prior to clinical use. Purpose To validate the ventilation distributions computed with the FAN flow model with xenon ventilation from xenon-enhanced dual-energy (DE) ...

journal_title：Radiology

authors： Kim M,Doganay O,Hwang HJ,Seo JB,Gleeson FV

更新日期：2021-01-01 00:00:00

abstract：:The CT scans of 18 patients with documented pulmonary septic emboli were reviewed. CT features of septic emboli included multiple peripheral nodules ranging in size from 0.5 to 3.5 cm (15 of 18 patients [83%]), a feeding vessel sign (n = 12; [67%]), cavitation (n = 9; [50%]), wedge-shaped peripheral lesions abutting t...

journal_title：Radiology

authors： Kuhlman JE,Fishman EK,Teigen C

更新日期：1990-01-01 00:00:00

abstract：PURPOSE:To compare radiologists' diagnostic accuracy and recall rates for breast tomosynthesis combined with digital mammography versus digital mammography alone. MATERIALS AND METHODS:Institutional review board approval was obtained at each accruing institution. Participating women gave written informed consent. Medi...

journal_title：Radiology

authors： Rafferty EA,Park JM,Philpotts LE,Poplack SP,Sumkin JH,Halpern EF,Niklason LT

更新日期：2013-01-01 00:00:00

abstract：:Purpose To determine the prevalence of the spot sign and the accuracy of using the spot sign to predict intracerebral hemorrhage (ICH) expansion with standardized multiphase computed tomographic (CT) angiography. Materials and Methods This prospective observational cohort study included 123 consecutive patients with a...

journal_title：Radiology

authors： Rodriguez-Luna D,Coscojuela P,Rodriguez-Villatoro N,Juega JM,Boned S,Muchada M,Pagola J,Rubiera M,Ribo M,Tomasello A,Demchuk AM,Goyal M,Molina CA

更新日期：2017-12-01 00:00:00

abstract：:Background During the peak of the coronavirus disease 2019 (COVID-19) pandemic, the authors noted an increase in positive lower-extremity CT angiography examinations in patients who presented with leg ischemia. The goal of this study was to determine whether lower-extremity arterial thrombosis was associated with COVI...

journal_title：Radiology

authors： Goldman IA,Ye K,Scheinfeld MH

更新日期：2020-11-01 00:00:00

abstract：:The sonographic records of 27 children who underwent a Cohen ureteroneocystostomy were reviewed. In 13 children (48%) sonograms demonstrated an echogenic, nonacoustically shadowing structure at or just above the trigone that was fixed in position within the bladder wall and covered by intact mucosa. This constellation...

journal_title：Radiology

authors： Mezzacappa PM,Price AP,Kassner EG,Haller JO,Glassberg KI

更新日期：1987-12-01 00:00:00

abstract：:Twenty-four patients with hepatocellular carcinoma or cholangiocarcinoma were treated with hepatic artery infusion (HAI) of chemotherapeutic agents (14 patients) or hepatic artery embolization (HAE) (11 patients). One patient had a combination of the two treatments. Ten of the 14 (71%) patients who underwent HAI demon...

journal_title：Radiology

authors： Charnsangavej C,Chuang VP,Wallace S,Soo CS,Bowers T

更新日期：1983-04-01 00:00:00

abstract：:Background Most lymphatic imaging examinations of the lower limb require intradermal or subcutaneous injection of tracer material into the foot to demonstrate the lymphatic vessels; however, no standard protocol exists, and single or multiple injections are applied at different sites. Purpose To determine the three-di...

journal_title：Radiology

authors： Shinaoka A,Koshimune S,Suami H,Yamada K,Kumagishi K,Boyages J,Kimata Y,Ohtsuka A

更新日期：2020-01-01 00:00:00

abstract：:Seventeen bilateral upper extremity lymphangiograms were obtained in patients with lymphoma referred for radiation therapy. The projection of the opacified axillary nodes is analyzed when using the mantle technique in various positions. The position of the lymph nodes varies considerably in the supine and prone positi...

journal_title：Radiology

authors： Weisenburger TH,Juillard GJ

更新日期：1977-01-01 00:00:00

abstract：:An analog model of the part of a patient's body containing a tumor is constructed by drawing anatomical contours obtained from computed tomograms on a set of transparent plastic sheets. The coverage of radiotherapy fields in the patient is visualized in three dimensions using the model and the light beam from the radi...

journal_title：Radiology

authors： Tatcher M,Elgrabli S,Kuten A,Kleinhaus U

更新日期：1980-07-01 00:00:00

abstract：PURPOSE:To prospectively investigate the relative accuracy and reproducibility of manual and automated computer software measurements by using polyps of known size in a human colectomy specimen. MATERIALS AND METHODS:Institutional review board approval was obtained for the study; written consent for use of the surgica...

journal_title：Radiology

authors： Taylor SA,Slater A,Halligan S,Honeyfield L,Roddie ME,Demeshski J,Amin H,Burling D

更新日期：2007-01-01 00:00:00