bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ultrasonography in the management of unexplained renal failure
Authors: Winston M. , Pritchard J. , ARRT Peter Paulin 
Published: February 2007

AbstractA series of seven cases of acute renal failure is presented in which sonographic study of the kidneys provided diagnostic information not otherwise obtainable. Ultrasonic imaging should be among the first diagnostic procedures applied in cases of acute unexplained renal failure because it provides rapid answers to the most urgent management problems — whether there is an obstructive component, and what is the potential for recovery.
Water enema: A new ultrasound technique in defining pelvic anatomy
Authors: Rubin Carl , Kurtz Alfred B. , Goldberg Barry B. 
Published: February 2007

AbstractA new technique is described for delineating pelvic structures by using a distended bladder in combination with a water enema. The distended urinary bladder, which acts as a sonic window to the pelvis, fully defines only the portion of structures that abut against the surface. With fluid in both the bladder and rectosigmoid colon, and occasionally the cecum, a ‘sandwich effect’ can be obtained, resulting in a more complete definition of interposed structures. Questionable masses that might be feces in the bowel can be easily distinguished from significant pathology. This new technique has the potential for increasing accuracy of diagnosis of pelvic masses and delineating tumor extension of masses arising in such pelvic organs as the bladder, prostate, and uterus.
A comparison of the “phrygian cap” deformity with bistable and gray scale ultrasound
Authors: Edell Steven 
Published: February 2007

AbstractSixteen patients with a “phrygian cap” deformity of the gall bladder seen with oral cholecystography were further evaluated with both bistable and gray scale ultrasound. The bistable technique produced internal echoes that were suspicious of gall stones. When this same area was reevaluated with the more accurate gray scale technique, the folded‐fundus deformity was clearly visualized.
Ultrasonic appearance of acute poststreptococcalglomerulonephritis
Authors: Rochester David , Aronson Andrew J. , Bowie James D. , Kunzmann Axel 
Published: February 2007

AbstractWe have described a case of acute post‐streptococcal glomerulonephritis in which the ultrasound findings resemble multiple solid renal masses. The diagnosis of this inflammatory lesion should be considered in the proper clinical setting.
Pelvic horseshoe kidney: Ultrasound findings and case report
Authors: Trackler Richard T. , Resnick Michael L. , Leopold George R. 
Published: February 2007

AbstractA case report illustrating the ultrasonic findings in pelvic horseshoe kidney is presented. The ultrasonic demonstration is correlated with a previous intravenous urogram in a patient with multiple congenital genitourinary anomalies.
Echocardiographic assessment of a blalock‐taussig shunt
Authors: Reitman Milton , Goldberg Herbert , Boris Gayle , Bakst Alvin , Gluck Regina 
Published: February 2007

AbstractA case of echocardiographic confirmation of the patency of a Blalock‐Taussig anastomosis is presented. Using the left atrium‐to‐aortic ratio (LA/Ao), we could document an increase in left atrial size representing an increase in pulmonary blood flow. This is the first report using echocardiography to prove the patency of a systemic‐to‐pulmonary artery anastomosis.
Ultrasonographic identification of dilated intrahepatic bile ducts and their differentiation from portal venous structures
Authors: Lain Faye C. , Londo Linda A. , Fill Roy A. 
Published: February 2007

AbstractThe appearance of dilated intrahepatic bile ducts was evaluated on ultrasonograms of 50 patients with proven extrahepatic biliary obstruction. Five characteristic changes allowed differentiation between biliary and portal venous systems. These changes included: (1) Alteration in the anatomic pattern adjacent to the main right portal venous segment and the main portal vein bifurcation. (2) Irregular walls of dilated bile ducts. (3) Stellate confluence of dilated bile ducts. (4) Acoustic enhancement by dilated bile ducts. (5) Peripheral location of dilated bile ducts. Many patients exhibited more than one of these findings. Parasagittal scans of the main right portal vein were the most sensitive for detection of intrahepatic ductal dilatation. Recognition of the characteristic changes and knowledge of the portal venous anatomy makes it possible to diagnose extrahepatic biliary obstruction with a high degree of confidence.
Echocardiographic and clinical correlations in systemic hyper‐tension
Authors: Ros Allan M. , Pisarczy Michael J. , Calabres Massimo , Crocco J. 
Published: February 2007

AbstractEchocardiographic measurements in 47 asymptomatic hypertensive patients were correlated with duration and severity of blood pressure elevation and with optic fundoscopic findings. These observations were also compared with electrocardiographic and chest roentgenographic measurements. Echo left ventricular wall thickness (LVWT) correlated best with duration of known hypertension. For 22 recent hypertensive patients the LVWT mean was 0.9 ± 0.3 cm whereas mean LVWT for 25 patients hypertensive for five or more years was 1.3 ± 0.2, (p ≤ 0.01). More severe initial diastolic pressure and the presence of hypertensive fundi also correlated with increased wall thickness. Increased left atrial diameter (≥ 2 cm m2) was observed primarily in the presence of longstanding disease. ECG and cardiothoracic ratio by xray did not correlate highly with the echo abnormalities. These observations suggest that echocardiography may be a sensitive and early means of recognizing cardiac changes in hypertensive patients.
B scan detection of pelvic masses: Accuracy compared to the barium enema intravenous pyelogram
Authors: Hogan Michael , Srichomkuan Aree 
Published: February 2007

AbstractOne hundred fifty nine pelvic ultrasonic examinations were performed; 54 were verified. The relative diagnostic accuracy of ultrasound, intravenous pyelograms, and barium enemas in detecting pelvic masses is discussed. Ultrasound is highly accurate except in ascites. While barium enema and intravenous pyelogram are both inaccurate. Ultrasound should be the initial examination for the evaluation of patients with a possible pelvic mass.
Echography of splenic infarct in a case of systemic lupus erythematosus
Authors: Itoh Kouichi , Hayashi Akinori , Kawai Tadashi , Sumiya Morito , Kano Shogo 
Published: February 2007

AbstractA 29 year old female with systemic lupus erythematosus had a splenic infarct. The echogram showed a 4 × 4 × 5 cm cluster of echoes. After splenectomy the preoperative echograms were matched to the gross pathological findings and a post mortem water bath scan. In this single patient, the echosplenograms were of considerable aid in confirming the accuracy of the diagnosis of splenic infarct.
Case report: Benign liver tumor with central necrosis
Authors: Cimmino Christian V. , Scott David W. 
Published: February 2007

AbstractA 38 year old previously well woman had sudden onset of upper abdominal pain and fever. Ultrasound examination revealed a necrotizing lesion in the liver. Arteriography revealed findings consistent with an adenoma or focal nodular hyperplasia. A right lobectomy and wedge resection of a similar lesion in the left lobe were done. Microscopy of both lesions indicated focal nodular hyperplasia. Adenoma is said to be related to the contraceptive oral hormone; focal nodular hyperplasia not. But it is possible that both may have an increased incidence of bleeding in the users of the oral contraceptive hormones.
Ultrasound findings of renal angiomyolipoma
Authors: Lee Timothy G. , Henderson Sidney C. , Freeny Patrick C. , Raskin Michael M. , Benson Eric P. , Pearse Harper D. 
Published: February 2007

AbstractAngiomyolipoma (AML) is a benign renal neoplasm. Preoperative diagnosis is important because of the different surgical approaches to benign and malignant tumors. Angiographic findings of AML and renal carcinoma may be similar and differentiation difficult. B‐mode ultrasound examination of AML demonstrates a different image pattern which may be helpful in differentiation.
Gallbladder wall thickening: A new sign of gallbladder disease visualized by gray scale cholecystosonography
Authors: Marchal G. , Crolla D. , Baert A. L. , Fevery J. , Kerremans R. 
Published: February 2007

AbstractThe use of gray scale equipment in a prospective study of radiologically non‐visualizing gallbladders, permitted detection of a new echographic aspect of gallbladder disease. Along with even, discrete bile thickening and the presence of sand‐sized calculi, thickening of the gallbladder wall in cholecystitis is another ultrasonographic sign of gallbladder disease that can be visualized successfully by gray scale ultrasound.
Carcinoma of the pancreas occuring in a child: A case report with description of gray scale ultrasound findings
Authors: Masterson James B. , Bowie James D. , Port Ronald B. , Elahi Cicely F. , Burrington John D. , Kranzler Jeffrey 
Published: February 2007

AbstractThis is a report of the gray scale ultrasound findings of pancreatic carcinoma occurring in a child. Although this tumor is rare, the preoperative diagnosis can be made if the physician is aware of this possibility. 99mTc sulfur colloid radionuclide scan, liver spleen scan, gallium scan, and ultrasound examinations are helpful in distinguishing the site of origin of upper abdominal masses.
Limitations in prediction of gestational age and birth weight by ultrasonographic methods
Authors: Gonzalez Antonio C. , Dale Edwin , Byers Robert H. , Page D. A. 
Published: February 2007

AbstractThe index of predictability of estimated gestational age (EGA) and birth weight (BW) from biparietal diameter (BPD) was tested in 1333 normal pregnancies; 96% of the patients were black. The correlation BPD and actual weeks to delivery was 0.834, r2 = 69.5%. Confidence limits were established and a nomogram for EGA was derived. Our nomogram and two similar ones were compared. The overall correlation between them was good, but that for specific BPD and EGA was not. In addition, our BPD values were smaller for corresponding gestational ages in other nomograms. The overall accuracy of estimated delivery date was ± 1.6 weeks. We were not able to predict birth weight at all from a single, random BPD measurement. We have demonstrated the serious limitations that exist in the prediction of gestational age from previously established nomograms. We infer that this error is even greater when homogeneous populations are so studied. We suggest that any published BPD‐EGA or BPD‐BW nomogram be given close, intensive statistical scrutiny, within the population studied, before it is used. When such scrutiny is not possible, serial sonographic determinations, or longitudinal use of growth charts, would be more acceptable.
Measurements of left ventricular wall thickness and systolic thickening by M mode echocardiography: Interobserver and intrapatient variability
Authors: Monoson Peter A. , O'Rourke Robert A. , Crawford Michael H. , White David H. 
Published: February 2007

AbstractWe examined interobserver and intrapatient variations in M mode echocardiographic measurements of diastolic and systolic interventricular septal and left ventricular posterior wall thickness and in the calculated percent systolic thickening of both walls. Diastolic measurements were made at the onset of the P wave and at the peak of the R wave of the simultaneously recorded electrocardiograms. In 20 normal subjects and six hypertensive patients, we compared measurements by two independent observers. There was a good correlation between the two observers in measurements of diastolic septal and posterior wall thickness (r > .90), whether or not the thickness was measured before the P wave or at the peak of the R wave. The systolic thickness measurements also correlated well (r > .80). However, the percent of systolic septal and posterior wall thickening as calculated by the two observers varied greatly (r > .60). In 10 normal subjects and the 6 hypertensive patients, two echocardiograms recorded on different days under similar conditions were measured by the same observer. There was a poor correlation in measurements of septal and posterior wall thickness and percent thickening. These data indicate that serial M mode echocardiographic determinations of ventricular wall thickness and percent thickening may show considerable variation because of resolution and definition problems and may be unreliable for quantifying changes in these measures produced by medical or surgical interventions.
An integrated television and real‐time ultrasonic imaging system
Authors: Schuette William H. , Shawker Thomas H. , Whitehouse Willard C. 
Published: February 2007

AbstractA mechanical sector scanning ultrasonic imaging system was integrated with a video character generator and an infrared sensitive television camera to add patient data and scanner position information to a recorded ultrasonic image. A permanent record is made by recording the final composite image on video tape together with simultaneous audio of examiner's comments during examination. This has facilitated both the interpretation of scans and the relocation of the scanner on successive procedures.
On the measurement and specification of acoustic output generated by pulsed ultrasonic diagnostic equipment
Authors: Kossoff G. 
Published: February 2007

AbstractThe method of describing acoustic output generated by pulsed equipment has not been fully formalized and is often inadequately specified. This paper discusses the terms that we have found useful to specify the acoustic output generated by pulsed diagnostic equipment and proposes additional terms that allow a more complete description of irradiation dosage. The application of the proposed specification is illustrated by measurements made on a typical contact echoscope.
Malfunction of a bjork‐shiley prosthetic heart valve in the mitral position producing an abnormal echocardiographic pattern
Authors: Clements Stephen D. , Perkins John V. 
Published: February 2007

AbstractThis report presents an echocardiographic study of a patient with fibrous ingrowth about the sewing ring and hinges of a Bjork‐Shiley valve in the mitral position. The valve was obstructed and produced a distinct motion pattern. In addition to having a rounded diastolic motion, the disk excursion was decreased.
Radiolucent holder for echocardiographic recordings during fluoroscopy and exercise
Authors: Pechacek Leonard W. , Busch Ulrich , Garcia Efrain 
Published: February 2007

AbstractThe design and function of a device that holds an ultrasound transducer against the chest wall in a stationary position is described. This holder is useful for obtaining echocardiograms during cinefluoroscopic procedures, various positional maneuvers, and exercise testing.
The complete echographic evaluation of solid renal masses
Authors: McDonald Daniel G. 
Published: February 2007

AbstractIn the presence of a solid intrarenal mass, ultrasound scans should not be limited to the mass itself. Modern commercial gray scale equipment is capable of demonstrating both tumor extension into the inferior vena cava and the metastatic disease to the liver. The presence of multiple solid intrarenal masses favors the diagnosis of metastatic disease to the kidney or multiple angiomyolipomas. Retroperitoneal lymphadenopathy or an adrenal mass coincidental with an intrarenal mass suggests metastatic disease. These possibilities can be detected by echography if prone scans are performed over the suprarenal region and the contralateral kidney, and supine scans are performed for evaluation of the inferior vena cava, liver, and retroperitoneum.
Real time observation of left ventricular aneurysm by b mode echocardiography
Authors: Kambe Tadashi , Nishimura Kinya , Hibi Norio , Fukui Yoichi , Miwa Arata , Murase Mitsuya 
Published: February 2007

AbstractThis paper describes two cases of left ventricular aneurysm following myocardial infarction by real time B mode echocardiography with a mechanical sector scan. The most distinctive feature was the paradoxical movement of the aneurysmal wall; in systole, it moved posteriorly to form a bulge, whereas the remaining noninfarcted area was oriented toward the left ventricular cavity in contraction. The final diagnosis was verified by aneurysmectomy.
Ultrasonic findings in isolated lymphoma of the spleen simulating splenic abscess
Authors: Cunningham Jerome J. 
Published: February 2007

AbstractBoth isolated lymphoma in the spleen and splenic abscess may give rise to ultrasonic images that show irregular zones of below‐normal echo activity with unimpeded acoustic transmission. The clinical features of splenic abscess and splenic lymphoma overlap considerably and fever is common to both. The distinction between focal splenic abscess and isolated splenic lymphoma may not be possible prior to surgery.
Pitfalls in ultrasonic detection of pleural fluid
Authors: Shin Myung Soo , Gray Paul W. 
Published: February 2007

AbstractThis is a report of proven massive infiltration of Hodgkin's disease of the lung with correlative sonographic, roentgenographic, and pathologic findings. Special emphasis is placed on the difficulties in distinguishing pleural fluid from massive tumor infiltration of the lung by Hodgkin's disease.
Ultrasonographic demonstration of inferior vena caval invasion
Authors: Teng Stephen S. , Laing Faye C. 
Published: February 2007

AbstractWhenever a liver neoplasm is seen ultrasonographically, an effort should be made to visualize the veins within the liver as well as the inferior vena cava for tumor extension. Valuable information can be obtained by the demonstration of this finding which may radically alter the further work‐up and treatment of the patient.
Ultrasonic demonstration of xanthogranulomatous pyelonephritis
Authors: Boutros George A. , Athey Patricia A. 
Published: February 2007

AbstractAn ultrasound examination performed on a young woman with a long history of urinary tract infection demonstrated multiple subcapsular sonolucencies suggestive of multiple abscesses. The combination of the ultrasonic appearance, the clinical history, and a large nonfunctioning kidney with calculi on intravenous pyelography allowed us to suggest the diagnosis of xanthogranulomatous pyelonephritis. Ultrasound plays an even greater role in patients who are allergic to iodinated contrast material in whom intravenous pyelograms and arteriograms may be contraindicated.
Papillary adenoma of the gall bladder: Ultrasonic demonstration
Authors: Carter Stephen J. , Rutledge Joseph , Hirsch Jack H. , Vracko Rudolf , Chikos Paul M. 
Published: February 2007

AbstractA papillary adenoma of the gall bladder was demonstrated by gray scale echography. The pathology of the tumor was described and the ultrasonic characteristics which distinguish it from a calculus were discussed.
Ultrasonic features of Gartner's duct cyst
Authors: Scheible F. William 
Published: February 2007

AbstractGartner's duct cysts will usually be incidental findings during pelvic sonography. Of developmental origin, they may present anywhere along the lateral aspect of the female genital tract. When the cysts are of parovarian origin, they will mimic other fluid‐filled adnexal masses, and no specific diagnosis can be made. When alongside the vagina or cervix, however, their ultrasonographic appearance is probably characteristic.
Enhanced ultrasonic visualization of kidneys via an abdominal compression pillow
Authors: Skolnick M. Leon 
Published: February 2007

AbstractIn order to improve the visualization of kidneys in patients who are scanned prone, a compression pillow is placed under the anterior abdomen at the approximate level of the kidneys. We hypothesize that the improved imaging occurs because the compression reduces the thickness of soft tissues overlying the kidneys and, therefore, lessens the amount of attenuation, scattering, and absorption the ultrasound beam undergoes. The benefits of this technique are illustrated in a patient with a renal cyst.
Determination of trans‐resveratrol in wine by micro‐HPLC with fluorescence detection
Authors: Lopez Ricardo , Dugo Paola , Mondello Luigi 
Published: February 2007

AbstractA new method for the quantitative determination of trans‐resveratrol in wine has been optimized and validated. The method is based on the direct injection of 500 nL of wine in an HPLC system fitted with an RP microcolumn of 10 cm×0.32 mm and spectrofluorometric detection. The linear dynamic range of the method covers the normal range of occurrence of the analyte in wines and extends for two orders of magnitude with r2 = 0.9994. Twenty‐three wines have been analyzed with the proposed method, finding concentrations in the range reported by other authors.
Pharmacophore Refinement and 3D‐QSAR Studies of Histamine H3 Antagonists
Authors: Narkhede Sachin S. , Degani Mariam S. 
Published: February 2007

AbstractMolecular modeling studies were performed to develop a predictive Common Pharmacophore Hypothesis (CPH) and use it for alignment in 3D‐QSAR studies using CoMFA and CoMSIA, with a diverse set of 106 histamine H3 antagonists. A five point CPH with three hydrophobic features, a basic or positive ionizable feature and an acceptor, for pharmacophore‐based alignment of molecules, was derived using PHASE. This hypothesis was selected from a pool, by correlating the observed and estimated activity for the training set and test set of molecules using partial least square analysis. It was found to be comparable to the previously reported hypothesis. The validated pharmacophore hypothesis was used for alignment of molecules in CoMFA and CoMSIA model development. The models so generated showed a good “predictive” r2 value of 0.763 and 0.820 for CoMFA and CoMSIA, respectively. The contour maps of the models were analyzed to give structural insight for activity improvement of future novel histamine H3 antagonists. The CPH can also provide a powerful template for virtual screening and design of new histamine H3 antagonists.
A comparison of methods to analyse continuous data from pseudo cluster randomized trials
Authors: Teerenstra S. , Moerbeek M. , Melis R. J. F. , Borm G. F. 
Published: February 2007

AbstractA major methodological reason to use cluster randomization is to avoid the contamination that would arise in an individually randomized design. However, when patient recruitment cannot be completed before randomization of clusters, the non‐blindedness of recruiters and patients may cause selection bias, while in the control clusters, it may slow recruitment due to patient or recruiter preferences for the intervention. As a compromise, pseudo cluster randomization has been proposed. Because no insight is available into the relative performance of methods to analyse data obtained from this design, we compared the type I and II error rates of mixed models, generalized estimating equations (GEE) and a paired t‐test to those of the estimator originally proposed in this design. The bias in the point estimate and its standard error were also incorporated into this comparison. Furthermore, we evaluated the effect of the weighting scheme and the accuracy of the sample size formula that have been described previously. Power levels of the originally proposed estimator and the unweighted mixed models were in agreement with the sample size formula, but the power of paired t‐test fell short. GEE produced too large type I errors, unless the number of clusters was large (>30–40 per arm). The use of the weighting scheme generally enhanced the power, but at the cost of increasing the type I error in mixed models and GEE. We recommend unweighted mixed models as the best compromise between feasibility and power to analyse data from a pseudo cluster randomized trial. Copyright © 2007 John Wiley & Sons, Ltd.