Scanner conformity in CT densitometry of the lungs.

abstract：PURPOSE:To compare the stress experienced by women who had false-positive screening mammograms and had undergone immediate on-site diagnostic imaging evaluation with that experienced by those who had been recalled for subsequent imaging. MATERIALS AND METHODS:A retrospective survey was mailed to women with false-posit...

journal_title：Radiology

authors： Lindfors KK,O'Connor J,Parker RA

更新日期：2001-01-01 00:00:00

abstract：:Abdominal ultrasonography using a high-resolution linear-array real-time scanner was compared to computed tomography, celiac arteriography, and radionuclide imaging in 24 patients with a total of 33 hepatocellular carcinomas (HCC), 10 patients with cavernous hemangioma (12 tumors), and 2 patients with metastatic carci...

journal_title：Radiology

authors： Sheu JC,Sung JL,Chen DS,Yu JY,Wang TH,Su CT,Tsang YM

更新日期：1984-03-01 00:00:00

abstract：PURPOSE:To retrospectively measure repeat rates for high-cost imaging studies, determining their causes and trends, and the impact of radiologist recommendations for a repeat examination on imaging volume. MATERIALS AND METHODS:This HIPAA-compliant study had institutional review board approval, with waiver of informed...

journal_title：Radiology

authors： Lee SI,Saokar A,Dreyer KJ,Weilburg JB,Thrall JH,Hahn PF

更新日期：2007-03-01 00:00:00

abstract：:Irradiation of the orbit is often associated with substantial dose inhomogeneity resulting from the insertion of lens blocks. We postulated that such dose inhomogeneity, which often exceeds 40%, could be halved by the use of two pairs of wedged beams, one angled in the sagittal plane and the other in the commonly empl...

journal_title：Radiology

authors： Harisiadis L,Schell MC,Working KR,Justice T,Wessels BW,Ling CC

更新日期：1985-09-01 00:00:00

abstract：:In a prospective study, the effect of infusion of a low-density contrast material was evaluated as an adjunct to high-density, double-contrast imaging of the sigmoid colon. After double-contrast barium enema (DCBE) study, 52 consecutive patients with sigmoid diverticulosis received an additional 500-750-mL enema eithe...

journal_title：Radiology

authors： Lappas JC,Maglinte DD,Kopecky KK,Cockerill EM,Lehman GA

更新日期：1988-07-01 00:00:00

abstract：:An investigation of the relationship between breast parenchymal patterns and breast cancer prevalence in a large referral population is presented. Mammograms were assigned to one of four categories according to our interpretation of Wolfe's classification. Cancer prevalence for the four patterns was similar when uncor...

journal_title：Radiology

authors： Peyster RG,Kalisher L,Cole P

更新日期：1977-11-01 00:00:00

abstract：:Background Increased cerebral signal intensity (SI) has been reported in patients undergoing MRI with gadolinium-based contrast agents (GBCAs). Published data on gadobenate dimeglumine have been somewhat contradictory. Purpose To evaluate the relationship between dosage of gadobenate dimeglumine and SI change at MRI f...

journal_title：Radiology

authors： Nguyen NC,Molnar TT,Cummin LG,Kanal E

更新日期：2020-07-01 00:00:00

abstract：:The imaging characteristics of microcalcifications in both benign and malignant breast conditions were analyzed in 48 digitized film mammograms. Each case included in this analysis had findings considered suggestive of malignancy by the radiologist, with the underlying histologic structure determined by excisional bio...

journal_title：Radiology

authors： Olson SL,Fam BW,Winter PF,Scholz FJ,Lee AK,Gordon SE

更新日期：1988-11-01 00:00:00

abstract：:A fluoroscopic system was modified to achieve a 95-98% reduction in radiation exposure and dosage to patients compared with other systems that reduce fluoroscopic radiation dosage. This reduction was accomplished by custom selection of a high conversion-factor, triplemode image intensifier; custom design of a variable...

journal_title：Radiology

authors： Wesenberg RL,Amundson GM

更新日期：1984-10-01 00:00:00

abstract：:The relationship of the brain angiographic mode circulation time (AVCT) to the mean transit time of the vascular indicator C15O-labeled hemoglobin (tc15o) and the regional cerebral blood flow (rCBF) as measured by the clearance of the diffusible tracer H2-15O was examined in 38 patients with selected cerebral diseases...

journal_title：Radiology

authors： Gado M,Eichling J,Grubb R,Phelps M,Raichie M,Ter-Pogossian MM

更新日期：1975-04-01 00:00:00

abstract：PURPOSE:To determine the patency of Wallstents placed across the venous anastomosis of prosthetic bridge grafts after percutaneous graft recanalization. MATERIALS AND METHODS:Wallstents were placed across 26 lesions at the venous anastomosis of polytetrafluoroethylene (PTFE) grafts in 25 patients (11 men, 14 women; ag...

journal_title：Radiology

authors： Patel RI,Peck SH,Cooper SG,Epstein DM,Sofocleous CT,Schur I,Falk A

更新日期：1998-11-01 00:00:00

abstract：:A new sign for the diagnosis of lipohemarthrosis on vertical beam lateral knee radiographs depends upon visualization of the joint capsule due to the presence of fat lying both within and outside of the joint. Recognition of lipohemarthrosis on routine knee radiographs may aid in the diagnosis of subtle tibial plateau...

journal_title：Radiology

authors： Sacks BA,Rosenthal DI,Hall FM

更新日期：1977-01-01 00:00:00

abstract：:Intracranial tuberculoma was studied by computed tomography (CT) in eight patients. Upon contrast enhancement, two patterns were seen: (a) a small enhancing ring with a central punctate lucent area, and (b) nodular enhancement. The various CT findings are correlated with the clinical features and with the appearance o...

journal_title：Radiology

authors： Whelan MA,Stern J

更新日期：1981-01-01 00:00:00

abstract：:Surgical cholecystectomy is associated with a high morbidity and mortality in elderly patients with acute calculous cholecystitis and underlying cardiac or pulmonary disease. Currently there are few alternatives for treating these patients. The authors have used percutaneous cholecystolithotomy in 11 such high-risk pa...

journal_title：Radiology

authors： Picus D,Marx MV,Hicks ME,Lang EV,Edmundowicz SA

更新日期：1989-11-01 00:00:00

abstract：PURPOSE:To report the authors' initial experience in treating patients with wide-neck aneurysms with assistance from a recently developed neck-bridge device (TriSpan; Target Therapeutics/Boston Scientific, Fremont, Calif). MATERIALS AND METHODS:Twenty-five patients were examined. Aneurysms were most frequently at the ...

journal_title：Radiology

authors： Raymond J,Guilbert F,Roy D

更新日期：2001-11-01 00:00:00

abstract：:A variation in ossification of the acromial process of the scapula is described. Postmortem radiographs, obtained in 78 infants who died of sudden infant death syndrome, showed an ossific opacity adjacent to the acromial process in 10 infants (13%). This finding was noted bilaterally in six patients and unilaterally i...

journal_title：Radiology

authors： Kleinman PK,Spevak MR

更新日期：1991-07-01 00:00:00

abstract：:The records of 200 patients with generalized cutaneous mycosis fungoides treated with whole body surface electron irradiation were reviewed. Type of skin lesion appeared to be the most important factor with respect to both survival and generalized skin disease-free interval. High-dose irradiation did not seem to influ...

journal_title：Radiology

authors： Lo TC,Salzman FA,Moschella SL,Tolman EL,Wright KA

更新日期：1979-02-01 00:00:00

abstract：:Inferior vena cava filters were placed in 60 patients. Ultrasound (US) of the venous access site was performed before and 3-5 days after filter placement to determine the prevalence of occlusive and nonocclusive access-site thrombosis (AST). Prevalence of symptoms attributable to AST was also evaluated at 1-month clin...

journal_title：Radiology

authors： Molgaard CP,Yucel EK,Geller SC,Knox TA,Waltman AC

更新日期：1992-10-01 00:00:00

abstract：:Magnetic resonance (MR) images of the neck were obtained in 24 patients using a specially designed radio-frequency coil, standard and high-resolution imaging techniques, and a variety of spin echo and inversion recovery pulse sequences. Cervical vascular structures were more easily identified with MR than with CT beca...

journal_title：Radiology

authors： Stark DD,Moss AA,Gamsu G,Clark OH,Gooding GA,Webb WR

更新日期：1984-02-01 00:00:00

abstract：:Two patients with a total of 4 intracerebral hemorrhages were examined by serial computer tomography (CT) over a period of up to 6 months, revealing a progressive decrease in lesion volume and density which eventually became less than that of the surrounding brain tissue. These changes were interpreted as complete clo...

journal_title：Radiology

authors： Messina AV,Chernik NL

更新日期：1976-03-01 00:00:00

abstract：:Radiographic and bone mineral (BM) data were collected over a three-year period on 195 patients with chronic renal failure. Most women maintained BM on dyalysis, whereas 44% of the men lost BM (p less than 0.05). Following transplantation, 86% of the patients either maintained or restored BM. After parathyroidectomy, ...

journal_title：Radiology

authors： Griffiths HJ,Zimmerman RE,Lazarus M,Lowrie E,Gottlieb MN,Phillips E,Pomerantz K

更新日期：1977-03-01 00:00:00

abstract：:CT scans of 87 patients with subdural hematoma were compared to those of 393 patients with midline shift caused by other intracranial lesions with regard to attenuation changes in the lesion and the character of the ventricular deformity. Isoattenuating was exhibited by 25% of the subdural hematomas and 5% of the othe...

journal_title：Radiology

authors： Möller A,Ericson K

更新日期：1979-01-01 00:00:00

abstract：PURPOSE:To evaluate fluorine 18 ((18)F) dihydroxyphenylalanine (DOPA) whole-body positron emission tomography (PET) as a biochemical imaging approach for detection of pheochromocytomas. MATERIALS AND METHODS:(18)F DOPA PET and magnetic resonance (MR) imaging were performed in 14 consecutive patients suspected of havin...

journal_title：Radiology

authors： Hoegerle S,Nitzsche E,Altehoefer C,Ghanem N,Manz T,Brink I,Reincke M,Moser E,Neumann HP

更新日期：2002-02-01 00:00:00

abstract：:Respiratory and other regular motions during two-dimensional Fourier transform magnetic resonance imaging produce image artifacts consisting of local blurring and more or less regularly spaced "ghost" images propagating along the direction of the phase-encoding magnetic field gradient. The patterns of these ghost arti...

journal_title：Radiology

authors： Axel L,Summers RM,Kressel HY,Charles C

更新日期：1986-09-01 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：:Thirty-nine magnetic resonance (MR) studies were performed on 31 women with surgically proved endometriosis. A total of 88 endometriotic lesions ranging in size from 0.2 to 7.5 cm were detected on 24 of 30 MR images of women. The signal intensities ranged from hyperintense on all pulse sequences (41 of 88) to hypointe...

journal_title：Radiology

authors： Zawin M,McCarthy S,Scoutt L,Comite F

更新日期：1989-06-01 00:00:00

abstract：PURPOSE:To establish the relationships between quantitative perfusion computed tomography (CT) parameters-specifically, primary tumor blood flow, blood volume, transit time, and permeability surface-area product-and immunohistologic markers of angiogenesis in colorectal cancer. MATERIALS AND METHODS:After institutiona...

journal_title：Radiology

authors： Goh V,Halligan S,Daley F,Wellsted DM,Guenther T,Bartram CI

更新日期：2008-11-01 00:00:00

abstract：PURPOSE:To prospectively investigate the clinical efficacy of using diffuse optical tomography (DOT) and ultrasonographic (US) localization with conventional US to differentiate malignant solid breast lesions from those that are benign. MATERIALS AND METHODS:The study was approved by the institutional review board and...

journal_title：Radiology

authors： Zhi W,Gu X,Qin J,Yin P,Sheng X,Gao SP,Li Q

更新日期：2012-11-01 00:00:00

abstract：PURPOSE:To evaluate acute myocardial infarction by using first-pass enhancement (FPE) and delayed enhancement (DE) magnetic resonance (MR) imaging compared with thallium 201 ((201)Tl) single photon emission computed tomography (SPECT). MATERIALS AND METHODS:Contrast material-enhanced FPE MR, inversion-recovery DE MR, ...

journal_title：Radiology

authors： Lund GK,Stork A,Saeed M,Bansmann MP,Gerken JH,Müller V,Mester J,Higgins CB,Adam G,Meinertz T

更新日期：2004-07-01 00:00:00

abstract：:Twenty-five patients, each of whom had peripheral intrathoracic lesions that were smaller than 5.0 X 5.0 cm in size and not diagnosed by conventional methods, underwent real-time sonography and ultrasonically guided aspiration biopsy. The lesions included 18 nodules, two infiltrates, and five cavitary lesions. Sonogra...

journal_title：Radiology

authors： Yang PC,Luh KT,Sheu JC,Kuo SH,Yang SP

更新日期：1985-05-01 00:00:00