Excretory urography in current practice: evidence against overutilization.

abstract：:Cranial magnetic resonance (MR) imaging was performed in 38 pregnant and postpartum women and 30 nonpregnant age-matched control subjects to establish standards for pituitary gland size and shape during this period. Gland height and infundibulum width were measured on midline T1-weighted sagittal images. Gland convexi...

journal_title：Radiology

authors： Elster AD,Sanders TG,Vines FS,Chen MY

更新日期：1991-11-01 00:00:00

abstract：PURPOSE:To assess the reproducibility of the magnetic resonance (MR) estimate of blood oxygen saturation (sO(2)) in the rat brain, to evaluate the relationship between low MR estimate of sO(2) values and tissue hypoxia in a hypoxic and necrotic glioscarcoma model (9L gliosarcoma cells), and to evaluate the capability o...

journal_title：Radiology

authors： Lemasson B,Christen T,Serduc R,Maisin C,Bouchet A,Le Duc G,Rémy C,Barbier EL

更新日期：2012-12-01 00:00:00

abstract：PURPOSE:To evaluate the safety and efficacy of biliary intervention performed by means of percutaneous transjejunal access. MATERIALS AND METHODS:In 28 patients with conventional antecolic Roux-en-Y choledochojejunostomy or hepaticojejunostomy loops, 41 attempts were made at direct percutaneous entry into the jejunal ...

journal_title：Radiology

authors： Perry LJ,Stokes KR,Lewis WD,Jenkins RL,Clouse ME

更新日期：1995-04-01 00:00:00

abstract：:Major socioeconomic changes in the practice of medicine in the past 2 decades have had a great impact on diagnostic radiology and have encouraged other physicians and entrepreneurs to enter many areas of this specialty. Major alterations in the practice of diagnostic radiology will be required if the specialty is to s...

journal_title：Radiology

authors： Meaney TF

更新日期：1989-09-01 00:00:00

abstract：PURPOSE:To analyze the effect of the 1991 Maryland legislative mandate of screening mammography benefits. MATERIALS AND METHODS:Claims submitted between January 1991 and December 1993 for outpatient mammograms obtained in women covered under Blue Cross Blue Shield of Maryland insurance indemnity contracts were analyze...

journal_title：Radiology

authors： Dans PE,Wright AT

更新日期：1996-03-01 00:00:00

abstract：PURPOSE:To determine whether the Wallstent endoluminal prosthesis can be used to maintain patency of venous stenoses and occlusions related to hemodialysis access. MATERIALS AND METHODS:Wallstents were placed in 52 patients with 56 lesions. Thirty-two lesions were in central veins and 24 were in peripheral veins. Sten...

journal_title：Radiology

authors： Gray RJ,Horton KM,Dolmatch BL,Rundback JH,Anaise D,Aquino AO,Currier CB,Light JA,Sasaki TM

更新日期：1995-05-01 00:00:00

abstract：PURPOSE:To investigate the effect of different iodine concentrations of contrast material on aortic and hepatic enhancement and the detectability of hypervascular hepatocellular carcinoma (HCC) with multi-detector row computed tomography (CT) and a uniphasic contrast material injection technique. MATERIALS AND METHODS...

journal_title：Radiology

authors： Awai K,Takada K,Onishi H,Hori S

更新日期：2002-09-01 00:00:00

abstract：:Twenty patients with multiple or recurrent superficial head and facial cancer were treated with low-megavoltage electron-beam therapy, using a readily adaptable polystyrene shield assembly with interchangeable collimators. Patient set-up times were reduced, treatment was simplified, and flexibility of therapy was achi...

journal_title：Radiology

authors： Johnson TS,Garciga CE,Feldman ME,Holcomb MH

更新日期：1975-06-01 00:00:00

abstract：PURPOSE:To investigate whether the presence or absence of gas in the appendix may be considered as additional ultrasonographic (US) criteria to rule out or confirm acute appendicitis. MATERIALS AND METHODS:The appendices in 239 control subjects, 138 patients with lower right quadrant pain without acute appendicitis, a...

journal_title：Radiology

authors： Rettenbacher T,Hollerweger A,Macheiner P,Rettenbacher L,Frass R,Schneider B,Gritzmann N

更新日期：2000-01-01 00:00:00

abstract：:Eight male heart transplant recipients underwent contrast material-enhanced electron-beam computed tomographic angiography. Coronary artery diameters measured with fixed thresholds and adaptive line density profile (LDP) methods were calculated relative to findings at quantitative coronary angiography. Variation with ...

journal_title：Radiology

authors： Funabashi N,Kobayashi Y,Perlroth M,Rubin GD

更新日期：2003-01-01 00:00:00

abstract：:The diagnosis of seminal vesicle invasion by prostatic carcinoma is based on observation of foci of relatively decreased signal intensity on T2-weighted magnetic resonance (MR) images. Similar findings were observed in the absence of tumor invasion in nine patients who had recently undergone prostatic needle biopsy. N...

journal_title：Radiology

authors： Mirowitz SA

更新日期：1992-11-01 00:00:00

abstract：:Purpose To investigate the prevalence of symptomatic carotid web in patients with acute ischemic stroke due to intracranial large vessel occlusion, to determine the clinical and imaging profile of patients with carotid web as well as their association with ischemic stroke, and to determine the interobserver agreement ...

journal_title：Radiology

authors： Compagne KCJ,van Es ACGM,Berkhemer OA,Borst J,Roos YBWEM,van Oostenbrugge RJ,van Zwam WH,Majoie CBLM,Marquering HA,Dippel DWJ,van der Lugt A,Emmer BJ,MR CLEAN Trial Investigators.

更新日期：2018-03-01 00:00:00

abstract：:A method of modified coronal computed tomography (CT) was developed for examination of epiphyseal growth plate arrest and neoplasms near the growth plate. Twenty-four patients were examined with this technique (26 examinations). In all cases, the growth plate and adjacent regions were well demonstrated. ...

journal_title：Radiology

authors： Murray K,Nixon GW

更新日期：1988-01-01 00:00:00

abstract：:In a review of the records of 3,712 drug abusers, 13 patients were identified with neurologic deficits attributable to the use of cocaine. Ischemic manifestations were the most frequent, occurring in seven (54%) patients, with a mean age of 34.2 years. Three (23%) patients had subarachnoid hemorrhage, and three (23%) ...

journal_title：Radiology

authors： Jacobs IG,Roszler MH,Kelly JK,Klein MA,Kling GA

更新日期：1989-01-01 00:00:00

abstract：:Prototype surface coil magnetic resonance (MR) images were obtained from phantoms and 42 subjects at 0.6 T to assess the feasibility of imaging relatively deep abdominal structures. Surface coil images demonstrated a two- to fourfold improvement in signal-to-noise ratio (SNR) when compared with whole-body coil images ...

journal_title：Radiology

authors： Edelman RR,McFarland E,Stark DD,Ferrucci JT Jr,Simeone JF,Wismer G,White EM,Rosen BR,Brady TJ

更新日期：1985-11-01 00:00:00

abstract：PURPOSE:To determine whether magnetic resonance (MR) spectroscopic imaging reveals metabolic changes, especially decreased N-acetylaspartate (NAA) concentrations outside the medial temporal lobe in patients with mesial temporal lobe epilepsy (TLE), consistent with neuropathologic findings of extratemporal neuronal impa...

journal_title：Radiology

authors： Vermathen P,Laxer KD,Schuff N,Matson GB,Weiner MW

更新日期：2003-01-01 00:00:00

abstract：PURPOSE:To retrospectively analyze radiation dose data for six common venous access procedures. MATERIALS AND METHODS:Institutional review board approval was obtained for this HIPAA-compliant study; informed consent was not required. Data review was limited to a quality assurance database. Patient medical records were...

journal_title：Radiology

authors： Storm ES,Miller DL,Hoover LJ,Georgia JD,Bivens T

更新日期：2006-03-01 00:00:00

abstract：:To reduce radiation exposure to patients and staff during neurointerventional procedures, region-of-interest (ROI) techniques were used with fluoroscopy, road mapping, and digital subtraction angiography in 19 patients. ROI filters, made of multiple layers of gadolinium, were attached to the collimators. Patient skin ...

journal_title：Radiology

authors： Rudin S,Guterman LR,Granger WE,Bednarek DR,Hopkins LN

更新日期：1996-06-01 00:00:00

abstract：:Areas of sclerosis in the phalanges, particularly the terminal phalanges, are common in sarcoidosis despite the rarity of osteosclerotic changes in other bones. Of 37 patients with sarcoidosis with osseous changes of the hands or feet, 20 (54%) has sclerosis either alone or in combination with bone destruction. Of 48 ...

journal_title：Radiology

authors： McBrine CS,Fisher MS

更新日期：1975-05-01 00:00:00

abstract：:An unusual case of pneumatosis coli is presented. The patient had acute inflammatory disease with gangrene of the appendix associated with air within the wall of the contiguous right colon. ...

journal_title：Radiology

authors： DiDonato LR

更新日期：1976-07-01 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 retrospectively evaluate the diagnostic performance of magnetic resonance (MR) imaging for the diagnosis of adnexal torsion in a series of patients with an equivocal adnexal mass at ultrasonography (US) in the context of acute or subacute pelvic pain. MATERIALS AND METHODS:The institutional ethics committee...

journal_title：Radiology

authors： Béranger-Gibert S,Sakly H,Ballester M,Rockall A,Bornes M,Bazot M,Daraï E,Thomassin-Naggara I

更新日期：2016-05-01 00:00:00

abstract：PURPOSE:To evaluate the vascular anatomy of the prostate gland with transrectal color Doppler ultrasound (US). MATERIALS AND METHODS:Thirty-five normal prostate glands were studied. Imaging findings were interpreted on the basis of findings from previous anatomic studies. RESULTS:Distribution of flow signals within t...

journal_title：Radiology

authors： Neumaier CE,Martinoli C,Derchi LE,Silvestri E,Rosenberg I

更新日期：1995-08-01 00:00:00

abstract：:Purpose To determine the correlation of the results of conventional B-mode ultrasonography (US) and compression sonoelastography with histologic results in common flexor tendons of the elbow in human cadavers. Materials and Methods Twenty-five common flexor tendons were evaluated in 16 fresh, unembalmed cadavers of 11...

journal_title：Radiology

authors： Klauser AS,Pamminger MJ,Halpern EJ,Abd Ellah MMH,Moriggl B,Taljanovic MS,Deml C,Sztankay J,Klima G,Gruber L,Jaschke WR

更新日期：2017-05-01 00:00:00

abstract：PURPOSE:To use directed biopsy sampling to determine whether microvascular assessment within gliomas, by means of ultrahigh-field-strength high-spatial-resolution gradient-echo (GRE) magnetic resonance (MR) imaging at 8 T, correlates with histopathologic assessment of microvascularity. MATERIALS AND METHODS:The study ...

journal_title：Radiology

authors： Christoforidis GA,Yang M,Abduljalil A,Chaudhury AR,Newton HB,McGregor JM,Epstein CR,Yuh WT,Watson S,Robitaille PM

更新日期：2012-07-01 00:00:00

abstract：:In diagnostic radiology, the routine measurement of exposure levels for a reference patient is an important part of an effective quality assurance program. In the United States, chest radiography is the most frequent examination and has the lowest exposure level of all radiologic examinations. We estimated the amount ...

journal_title：Radiology

authors： Butler PF,Conway BJ,Suleiman OH,Koustenis GH,Showalter CK

更新日期：1985-08-01 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：: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：: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：:The relationship between patient waiting time and capacity and utilization is quantified. By deciding upon the average acceptable and maximum allowable waiting times, the required capacity and resulting utilization rate are fixed. The data needed for analysis include waiting time, patient volume, time required for spe...

journal_title：Radiology

authors： Rhea JT,St Germain RP

更新日期：1979-03-01 00:00:00