Desirability of roentgen esophageal examination immediately after pneumatic dilatation for achalasia.

abstract：:In 41 patients with clinical evidence of pancreatic islet cell tumors, CT detected 21 of 27 tumors that were proved at surgery (sensitivity 78%) and correctly excluded the diagnosis in 14 of 14 patients with no evidence of tumor at long-term follow-up. Using rapid sequence CT scanning and bolus contrast material infus...

journal_title：Radiology

authors： Stark DD,Moss AA,Goldberg HI,Deveney CW

更新日期：1984-02-01 00:00:00

abstract：:The National Institutes of Health (NIH) comprise the largest single source of funding in the world for the support of biomedical research. Much of the work of the NIH focuses on the elucidation of fundamental biophysical, biochemical, and biologic aspects of the molecular, cellular, and tissue processes underlying bot...

journal_title：Radiology

authors： Wolbarst AB,Hendee WR

更新日期：2007-01-01 00:00:00

abstract：PURPOSE:To retrospectively evaluate interobserver variability between breast radiologists by using terminology of the fourth edition of the Breast Imaging Reporting and Data System (BI-RADS) to categorize lesions on mammograms and sonograms and to retrospectively determine the positive predictive value (PPV) of BI-RADS...

journal_title：Radiology

authors： Lazarus E,Mainiero MB,Schepps B,Koelliker SL,Livingston LS

更新日期：2006-05-01 00:00:00

abstract：:Ten ureteral strictures that developed in nine patients after renal transplantation were managed with balloon catheter dilation and placement of a ureteral stent. Four strictures were successfully dilated (40%), with a follow-up of 15-42 months (mean, 29 months). Comparison of these cases with the six cases of unsucce...

journal_title：Radiology

authors： Kim JC,Banner MP,Ramchandani P,Grossman RA,Pollack HM

更新日期：1993-03-01 00:00:00

abstract：:Pulmonary arteriography is an invasive but relatively safe diagnostic procedure. It is generally believed that the presence of pulmonary hypertension is one risk factor that increases the likelihood of a major complication. To assess the magnitude of risk, the reports on 1,434 patients who underwent pulmonary arteriog...

journal_title：Radiology

authors： Perlmutt LM,Braun SD,Newman GE,Oke EJ,Dunnick NR

更新日期：1987-01-01 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：:The efficacy of stereotaxic localization for fine-needle aspiration biopsy in the detection of recurrent cancer manifested as calcifications on mammograms was evaluated in 43 patients that had been treated with local resection and radiation therapy. Six patients had malignant aspirates and one had an atypical aspirate...

journal_title：Radiology

authors： Mitnick JS,Vazquez MF,Roses DF,Harris MN,Schechter S

更新日期：1992-01-01 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 compare the use of dynamic oxygen-enhanced magnetic resonance (MR) imaging with the use of quantitatively assessed computed tomography (CT) for assessment of clinical stage and evaluation of pulmonary functional change due to treatment in patients with asthma. MATERIALS AND METHODS:The institutional review ...

journal_title：Radiology

authors： Ohno Y,Nishio M,Koyama H,Seki S,Yoshikawa T,Matsumoto S,Obara M,van Cauteren M,Sugimura K

更新日期：2014-12-01 00:00:00

abstract：:Reference values (RVs) are recommended by the American Association of Physicists in Medicine for four radiographic projections, computed tomography, fluoroscopy, and dental radiography. RVs are used to compare radiation doses from individual pieces of radiographic equipment with doses from similar equipment assessed i...

journal_title：Radiology

authors： Gray JE,Archer BR,Butler PF,Hobbs BB,Mettler FA Jr,Pizzutiello RJ Jr,Schueler BA,Strauss KJ,Suleiman OH,Yaffe MJ

更新日期：2005-05-01 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：:The safety of small-caliber firearms in a 1.5-T magnetic resonance (MR) imaging environment was assessed with six handguns, which were unloaded before testing. Each firearm was withdrawn barrel-first to assess the interaction of the magnetic field with the hammer and/or trigger. Two of the six weapons discharged repro...

journal_title：Radiology

authors： Kanal E,Shaibani A

更新日期：1994-12-01 00:00:00

abstract：PURPOSE:To investigate the effect of injection rate of contrast medium on aortic and hepatic peak enhancement at computed tomography. MATERIALS AND METHODS:Early pharmacokinetics of contrast enhancement was analyzed theoretically and simulated with a compartment model. Contrast enhancement curves were generated from t...

journal_title：Radiology

authors： Bae KT,Heiken JP,Brink JA

更新日期：1998-02-01 00:00:00

abstract：PURPOSE:To determine whether intraductal perfusion with chilled saline reduces thermal injury to bile ducts during radiofrequency (RF) ablation. MATERIALS AND METHODS:In swine, anesthesia was induced and the common bile duct was surgically cannulated with a pediatric feeding tube. RF thermal lesions were created adjac...

journal_title：Radiology

authors： Raman SS,Aziz D,Chang X,Ye M,Sayre J,Lassman C,Lu DS

更新日期：2004-07-01 00:00:00

abstract：PURPOSE:To determine the accuracy of magnetic resonance (MR) cholangiography for detection of primary sclerosing cholangitis (PSC) and localization of PSC in the biliary tract. MATERIALS AND METHODS:In a prospective case-control study involving 102 patients, the MR cholangiograms obtained in 34 patients with PSC estab...

journal_title：Radiology

authors： Fulcher AS,Turner MA,Franklin KJ,Shiffman ML,Sterling RK,Luketic VA,Sanyal AJ

更新日期：2000-04-01 00:00:00

abstract：:Purpose To investigate the prognostic value of circumferential left ventricular (LV) strain measured by using cardiac MRI for prediction of major adverse cardiac events (MACE) following an acute ST-segment-elevation myocardial infarction (STEMI). Materials and Methods Participants with acute STEMI were prospectively e...

journal_title：Radiology

authors： Mangion K,Carrick D,Carberry J,Mahrous A,McComb C,Oldroyd KG,Eteiba H,Lindsay M,McEntegart M,Hood S,Petrie MC,Watkins S,Davie A,Zhong X,Epstein FH,Haig CE,Berry C

更新日期：2019-02-01 00:00:00

abstract：PURPOSE:To test the hypothesis that computed tomographic (CT) scanning during early rather than middle diastole can significantly reduce the interscan variability of coronary artery calcium (CAC) scores. MATERIALS AND METHODS:Five hundred thirty-eight patients were initially enrolled; 282 of them were found to have CA...

journal_title：Radiology

authors： Mao S,Bakhsheshi H,Lu B,Liu SC,Oudiz RJ,Budoff MJ

更新日期：2001-09-01 00:00:00

abstract：:A system utilizing a multi-image capacity video disc recorder rather than a photographic camera for the initial recording of ultrasound images id described, as well as the resulting benefits. ...

journal_title：Radiology

authors： Skolnick ML

更新日期：1979-11-01 00:00:00

abstract：:The cause of superior vena cava syndrome (SVCS) in two patients was identified by means of endovascular biopsy of the superior vena cava (SVC) performed with a percutaneous atherectomy catheter. In both cases, the extracted tissues were neoplastic, therefore obviating additional invasive procedures. After a specific d...

journal_title：Radiology

authors： Dake MD,Zemel G,Dolmatch BL,Katzen BT

更新日期：1990-03-01 00:00:00

abstract：:366 patients with squamous-cell carcinoma of the oropharynx treated by external irradiation were studied to see whether residual disease at the end of treatment influences control. The frequency of recurrence was found to be significantly greater when residual disease was present. When the total dose was determined by...

journal_title：Radiology

authors： Barkley HT,Fletcher GH

更新日期：1977-08-01 00:00:00

abstract：PURPOSE:To determine whether excess prostate-specific antigen (PSA) improves the accuracy of predicting positive biopsy results. MATERIALS AND METHODS:Results of prostate biopsy in 130 consecutive patients were correlated with transrectal ultrasound (TRUS) findings, digital rectal examination results, serum PSA level,...

journal_title：Radiology

authors： Rubens DJ,Gottlieb RH,Maldonado CE Jr,Frank IN

更新日期：1996-04-01 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

abstract：:A series of image quality measurements were obtained over a two-year period for eight image-intensifier tube fluoroscopic units used in clinical practice. The measurements were in agreement with a radiologist's opinion of the image quality for each tube. The results showed that some systems did not change significantl...

journal_title：Radiology

authors： Lee D,Sourkes AM,Holloway AF,Reed MH

更新日期：1981-02-01 00:00:00

abstract：:Depiction of small-bowel pathologic conditions was optimized with use of a negative luminal contrast agent, spectral fat suppression, and gadolinium enhancement in an excised gut phantom. The method was applied in nine patients in conjunction with standard enteroclysis examinations. Bulk susceptibility effects of oral...

journal_title：Radiology

authors： Faber SC,Stehling MK,Holzknecht N,Gauger J,Helmberger T,Reiser M

更新日期：1997-10-01 00:00:00

abstract：PURPOSE:To quantify inter- and intrascanner conformity in computed tomographic (CT) densitometry of the lungs. MATERIALS AND METHODS:With six scanners from four manufacturers, a lung densitometry protocol with several variations was applied for performance comparison. Phantoms included water, air, and a humanoid thora...

journal_title：Radiology

authors： Kemerink GJ,Lamers RJ,Thelissen GR,van Engelshoven JM

更新日期：1995-12-01 00:00:00

abstract：:Duplex Doppler ultrasound (US) was used in 68 consecutive patients with focal liver lesions, including 12 hepatocellular carcinomas, one cholangiocarcinoma, 37 metastases, 15 hemangiomas, one hemangioendothelioma, and two focal nodular hyperplasias. Of the hepatocellular carcinomas, six were diffusely hyperechoic, two...

journal_title：Radiology

authors： Taylor KJ,Ramos I,Morse SS,Fortune KL,Hammers L,Taylor CR

更新日期：1987-09-01 00:00:00

abstract：:The distal small-bowel loops in the pelvis do not always lend themselves to palpation of easy visualization during conventional small-bowel examinations. When this occurs, an angled view of the pelvis, such as that used to uncoil the sigmoid colon during barium-enema examinations, can separate these overlapping segmen...

journal_title：Radiology

authors： Fisher JK

更新日期：1982-07-01 00:00:00

abstract：PURPOSE:To compare findings with color Doppler sonography and magnetic resonance (MR) angiography in the diagnosis of Budd-Chiari syndrome. MATERIALS AND METHODS:Doppler sonographic scans and MR angiograms in 11 patients (five men and six women; age range, 30-63 years; mean age, 45 years) with proved Budd-Chiari syndr...

journal_title：Radiology

authors： Kane R,Eustace S

更新日期：1995-04-01 00:00:00

abstract：:Results of 133 thoracic percutaneous fine-needle aspiration biopsies performed with a new dual cutting edge needle were analyzed to see if it could reduce the false-negative rate for malignancy compared with that achieved with a sharply beveled spinal needle. Results of cytologic examinations were compared with those ...

journal_title：Radiology

authors： Weisbrod GL,Herman SJ,Tao LC

更新日期：1987-04-01 00:00:00

abstract：:Forty-two patients underwent magnetic resonance (MR) imaging for a variety of lesions in the vertebral body. A 0.15-T MR system was employed. Twenty-six patients were found to have malignant metastatic lesions (group 1); 16 had nonneoplastic lesions (group 2). The ability to differentiate between the two groups with M...

journal_title：Radiology

authors： Sugimura K,Yamasaki K,Kitagaki H,Tanaka Y,Kono M

更新日期：1987-11-01 00:00:00