Economic and cost-effectiveness investigations of radiologic practices.

abstract：:History A 47-year-old Sudanese man without a known remarkable medical history presented to the emergency department for a syncopal episode. The patient denied chest pain, dyspnea, focal weakness, or prior similar episodes. He was originally from north Sudan and eventually moved to Saudi Arabia, where he worked as a fa...

journal_title：Radiology

authors： Handran CB,Hurwitz Koweek LM,Mammarappallil JG

更新日期：2019-10-01 00:00:00

abstract：:Twenty-two patients with synthetic ossicular replacements were studied with computed tomography (CT). Twelve patients had total ossicular replacement prostheses (TORPs), and ten patients had partial ossicular replacement prostheses (PORPs). Good results were achieved in 12 patients (eight with TORPs and four with PORP...

journal_title：Radiology

authors： Swartz JD,Berger AS,Zwillenberg S,Granoff DW,Popky GL

更新日期：1987-06-01 00:00:00

abstract：:Magnetic resonance (MR) images of the hips and knees of three healthy volunteers were reviewed and compared with images obtained from the hips of three patients with effusions. Comparison was also made with MR images obtained from two swine knees following the injections of saline in one and blood in the other. The an...

journal_title：Radiology

authors： Beltran J,Noto AM,Herman LJ,Mosure JC,Burk JM,Christoforidis AJ

更新日期：1986-01-01 00:00:00

abstract：PURPOSE:To evaluate characteristics of delayed ischemic stroke after stent-assisted coil placement in cerebral aneurysms and to determine the optimal duration of dual antiplatelet therapy for its prevention. MATERIALS AND METHODS:This retrospective study was approved by the institutional review board, and the requirem...

journal_title：Radiology

authors： Hwang G,Kim JG,Song KS,Lee YJ,Villavicencio JB,Suroto NS,Park NM,Park SJ,Jeong EA,Kwon OK

更新日期：2014-10-01 00:00:00

abstract：:Purpose To compare arterial spin labeling (ASL) data between low- and high-grade brain tumors in children to establish a cutoff to distinguish low- from high-grade neoplasms and to assess potential correlations between cerebral blood flow (CBF) and quantitative histologic microvascular data. Materials and Methods Appr...

journal_title：Radiology

authors： Dangouloff-Ros V,Deroulers C,Foissac F,Badoual M,Shotar E,Grévent D,Calmon R,Pagès M,Grill J,Dufour C,Blauwblomme T,Puget S,Zerah M,Sainte-Rose C,Brunelle F,Varlet P,Boddaert N

更新日期：2016-11-01 00:00:00

abstract：:Ten consecutive patients with biopsy-proved invasive cervical carcinoma underwent magnetic resonance (MR) imaging with both a standard body coil and with an endorectal surface coil. The endorectal coil provided a markedly improved signal-to-noise ratio, enabling the use of small fields of view; thus, the images had si...

journal_title：Radiology

authors： Milestone BN,Schnall MD,Lenkinski RE,Kressel HY

更新日期：1991-07-01 00:00:00

abstract：:Dilatation of the aortic root, outlined by a periaortic fat layer, was observed in 19 of 25 successive cases of aneurysm of the ascending aorta. In one of these cases the aneurysm was entirely confined to the aortic root. In two other cases the aneurysms could not be detected on standard chest radiographs judged in th...

journal_title：Radiology

authors： Szamosi A

更新日期：1981-03-01 00:00:00

abstract：:Transrectal ultrasound (US; also called endosonography) was used to evaluate known or suspected rectal and perirectal masses. Thirty-one patients were examined with commercially available endosonographic probes. Those who obtained and interpreted the sonograms had no knowledge of other diagnostic studies, which includ...

journal_title：Radiology

authors： Rifkin MD,Marks GJ

更新日期：1985-11-01 00:00:00

abstract：PURPOSE:To prospectively investigate the effect of low tube voltage on radiation dose, contrast enhancement, image quality, and image noise at abdominal dynamic computed tomography (CT). MATERIALS AND METHODS:The institutional review board approved this study. Prior informed consent was obtained from all patients. For...

journal_title：Radiology

authors： Nakayama Y,Awai K,Funama Y,Hatemura M,Imuta M,Nakaura T,Ryu D,Morishita S,Sultana S,Sato N,Yamashita Y

更新日期：2005-12-01 00:00:00

abstract：:Twenty-three renal artery stenoses in 21 hypertensive patients, caused by fibromuscular dysplasia, were treated with percutaneous transluminal angioplasty (PTA). Follow-up over a period of 1 to 30 months, including angiography, renal vein renin assay, and radionuclide flow studies, was performed in 8 patients, each wi...

journal_title：Radiology

authors： Tegtmeyer CJ,Elson J,Glass TA,Ayers CR,Chevalier RL,Wellons HA Jr,Studdard WE Jr

更新日期：1982-06-01 00:00:00

abstract：:The authors investigated the spectrum of radiologic findings in a large series (n = 47) of patients seropositive to human immunodeficiency virus (HIV) 1 and with pathologically proved progressive multifocal leukoencephalopathy, to determine the characteristic imaging pattern of the disease. Thirty-six computed tomogra...

journal_title：Radiology

authors： Whiteman ML,Post MJ,Berger JR,Tate LG,Bell MD,Limonte LP

更新日期：1993-04-01 00:00:00

abstract：PURPOSE:To evaluate by using in vivo magnetic resonance (MR) imaging the functionality of a liposomal paramagnetic contrast agent with T1 relaxivity that rapidly and markedly increases at temperatures above the gel-to-liquid crystalline phase transition temperature (T(c)) of the liposome membrane. MATERIALS AND METHOD...

journal_title：Radiology

authors： McDannold N,Fossheim SL,Rasmussen H,Martin H,Vykhodtseva N,Hynynen K

更新日期：2004-03-01 00:00:00

abstract：:Magnetic resonance (MR) gated cardiac imaging was performed in ten subjects using a prototype 0.15-T resistive magnet imaging system. Volume and planar imaging techniques utilizing saturation recovery, proton Tl-weighted relaxation time pulse sequences produced images of the heart and great vessels with exquisite anat...

journal_title：Radiology

authors： Go RT,MacIntyre WJ,Yeung HN,Kramer DM,Geisinger M,Chilcote W,George C,O'Donnell JK,Moodie DS,Meaney TF

更新日期：1984-01-01 00:00:00

abstract：:The value of magnetic resonance (MR) imaging was assessed for 17 pregnant patients with sonograms suggestive of a pelvic mass. The MR imaging signal features improved lesion characterization in 47% (eight of 17) of cases, including two of four mature cystic teratomas of the ovary, three uterine fibroids, one solid ova...

journal_title：Radiology

authors： Kier R,McCarthy SM,Scoutt LM,Viscarello RR,Schwartz PE

更新日期：1990-09-01 00:00:00

abstract：PURPOSE:To evaluate diagnostic performance of three nonenhanced methods: variable-refocusing-flip angle (FA) fast spin-echo (SE)-based magnetic resonance (MR) angiography (variable FA MR) and constant-refocusing-FA fast SE-based MR angiography (constant-FA MR) and flow-sensitive dephasing (FSD)-prepared steady-state fr...

journal_title：Radiology

authors： Lim RP,Fan Z,Chatterji M,Baadh A,Atanasova IP,Storey P,Kim DC,Kim S,Hodnett PA,Ahmad A,Stoffel DR,Babb JS,Adelman MA,Xu J,Li D,Lee VS

更新日期：2013-04-01 00:00:00

abstract：PURPOSE:To evaluate how interreader agreement and the site of the volume of interest (VOI) affect the agreement and variability of liver mean standardized uptake value normalized to lean body mass (SUL(mean)) at fluorine 18 fluorodeoxyglucose (FDG) positron emission tomography (PET)/computed tomography (CT). MATERIALS...

journal_title：Radiology

authors： Viner M,Mercier G,Hao F,Malladi A,Subramaniam RM

更新日期：2013-05-01 00:00:00

abstract：:Capabilities of computed tomography (CT) and magnetic resonance (MR) imaging in the diagnosis of cerebellopontine angle-petromastoid (CPA-PM) lesions were compared in 75 patients. CT and MR demonstrated 95.8% and 98.7% of the lesions, respectively. MR was often more helpful for characterization of neuromas, epidermoid...

journal_title：Radiology

authors： Gentry LR,Jacoby CG,Turski PA,Houston LW,Strother CM,Sackett JF

更新日期：1987-02-01 00:00:00

abstract：:In 24 CT studies in children with brain stem gliomas, the CT appearance was seen to vary with the tumor's physical characteristics. Infiltrative tumors produce diffuse enlargement of the brain stem; they are isodense with brain parenchyma or of decreased density and may show partial enhancement. Some gliomas grow foca...

journal_title：Radiology

authors： Bilaniuk LT,Zimmerman RA,Littman P,Gallo E,Rorke LB,Bruce DA,Schut L

更新日期：1980-01-01 00:00:00

abstract：:Despite the widespread use of interventional radiologic techniques, there has been reluctance to apply these to the spleen. Concern for bleeding and difficulty in negotiating around the colon and pleura have limited its use. The authors report their experience with interventional radiology of the spleen in 35 cases, i...

journal_title：Radiology

authors： Quinn SF,vanSonnenberg E,Casola G,Wittich GR,Neff CC

更新日期：1986-11-01 00:00:00

abstract：PURPOSE:To prospectively evaluate the safety and effectiveness of radiofrequency ablation with a multiple-electrode switching system for the treatment of renal cell carcinoma (RCC). MATERIALS AND METHODS:From November 2009 to December 2010, 33 patients (mean age, 70.7 years; range, 44-86 years) with histologically pro...

journal_title：Radiology

authors： Takaki H,Nakatsuka A,Uraki J,Yamanaka T,Fujimori M,Hasegawa T,Arima K,Sugimura Y,Yamakado K

更新日期：2013-04-01 00:00:00

abstract：:The authors discuss the appropriate FISP (fast imaging with steady-state precession) sequence structure to maintain constant phase at the radio-frequency pulse in the presence of motion. They present preliminary results of its application to head and spine imaging in an effort to maintain contrast between the cerebros...

journal_title：Radiology

authors： Haacke EM,Wielopolski PA,Tkach JA,Modic MT

更新日期：1990-05-01 00:00:00

abstract：:Background Growing evidence indicates an association between cerebral microhemorrhages (MHs) and amyloid β accumulation in Alzheimer disease (AD), but to the knowledge of the authors the association with tau burden is unknown. Purpose To investigate the association between cerebral MH load and tau pathologic structure...

journal_title：Radiology

authors： Rauchmann BS,Ghaseminejad F,Mekala S,Perneczky R,Alzheimer’s Disease Neuroimaging Initiative.

更新日期：2020-07-01 00:00:00

abstract：:Background Existing guidelines are inconsistent regarding the indications for staging brain MRI in patients with newly diagnosed, early-stage non-small cell lung cancer (NSCLC). Purpose To evaluate the diagnostic yield of staging brain MRI in the initial evaluation of lung cancer. Materials and Methods This retrospect...

journal_title：Radiology

authors： Kim M,Suh CH,Lee SM,Kim HC,Aizer AA,Yanagihara TK,Bai HX,Guenette JP,Huang RY,Kim HS

更新日期：2020-11-01 00:00:00

abstract：PURPOSE:To demonstrate coronary sinus-left atrium connections and evaluate coronary sinus function and anatomy in detail by using multidetector computed tomography (CT). MATERIALS AND METHODS:In this institutional review board-approved retrospective study, the authors evaluated coronary CT angiograms obtained in 65 pa...

journal_title：Radiology

authors： Saremi F,Thonar B,Sarlaty T,Shmayevich I,Malik S,Smith CW,Krishnan S,Sánchez-Quintana D,Narula N

更新日期：2011-09-01 00:00:00

abstract：PURPOSE:To determine if wrist arthrography changes surgeons' diagnoses and treatment plans for patients with chronic wrist pain. MATERIALS AND METHODS:Bilateral, three-compartment wrist arthrography was performed in 64 patients. Prospective questionnaires evaluated surgeons' diagnoses and management plans at three sta...

journal_title：Radiology

authors： Yin Y,Evanoff BA,Gilula LA,Littenberg B,Pilgram TK,Kanterman RY

更新日期：1996-09-01 00:00:00

abstract：:Desferal was labeled with 111In and its distribution was studied in normal mice, rabbits bearing turpentine-induced abscesses, and rats bearing Staphylococcus aureus-induced abscesses. The results indicate that 111In Desferal may be used in abscess detection and localization. ...

journal_title：Radiology

authors： Chandra R,Pierno C,Braunstein P

更新日期：1978-09-01 00:00:00

abstract：PURPOSE:To prospectively identify brain regions in which task-related changes in activation during a memory encoding task, measured with functional magnetic resonance (MR) imaging, correlate with degree of memory impairment across Alzheimer disease (AD), mild cognitive impairment (MCI), and elderly control subjects. M...

journal_title：Radiology

authors： Petrella JR,Wang L,Krishnan S,Slavin MJ,Prince SE,Tran TT,Doraiswamy PM

更新日期：2007-10-01 00:00:00

abstract：PURPOSE:To determine the value of ultrasound (US) in the diagnosis of snapping iliopsoas tendon. MATERIALS AND METHODS:In three patients, dynamic US of the hip was performed as the flexed, abducted, and externally rotated hip was extended. The contralateral hip was also evaluated. Hip arthrography was performed in all...

journal_title：Radiology

authors： Cardinal E,Buckwalter KA,Capello WN,Duval N

更新日期：1996-02-01 00:00:00

abstract：:Thirty patients underwent 16-section multi-detector row computed tomographic (CT) angiography of the thorax with retrospective electrocardiographic gating. Institutional review board approval was obtained for retrospective analysis of CT scan data and records; patient informed consent was not required. Images reconstr...

journal_title：Radiology

authors： Hofmann LK,Zou KH,Costello P,Schoepf UJ

更新日期：2004-12-01 00:00:00

abstract：:Five patients underwent bone-marrow transplantation, and graft-vs.-host disease (GVHD) developed. Radiographic features are described. Three patients showed an abrupt transition at the jejuno-ileal junction from normal small bowel to ileal loops which were narrowed, tubular, separated, edematous, and, generally, witho...

journal_title：Radiology

authors： Rosenberg HK,Serota FT,Koch P,Borden S 4th,August CS

更新日期：1981-02-01 00:00:00