bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ultrasonographic diagnosis of submucosal tumors of the stomach: The “bridging layers” sign
Authors: Miyamoto Yukio , Tsujimoto Fumio , Tada Shimpei 
Published: February 2007

AbstractThe ultrasonic findings in 14 cases with submucosal tumors and one case with extragastric lymphoma using the fluid‐filled stomach method were reviewed to determine the appearance of the stomach wall in submucosal tumors. Two characteristic ultrasound features of submucosal tumors were demonstrated in all 14 lesions except in two located high in the fundus of the stomach. One feature was mucosal bridging layers, i.e., three layers could be seen on the mucosal side of the tumors, and at least two of them continued to layers 1 and 2 of the normal gastric wall. The other was a serosal bridging layer, i.e., layer 5 of the normal gastric wall ran toward the serosal side of the tumor. On the basis of a “bridging layers” sign, we believe a definite diagnosis of submucosal tumor can be obtained from ultrasound images.
Echogenic forms of hydatid cysts: Sonographic diagnosis
Authors: Garcia Francisco J. , Martí‐Bonmatí Luis , Menor Francisco , Rodriguez Belen , Ballesta Antonio 
Published: February 2007

AbstractOf 167 patients with abdominal hydatidosis, 29 showed a total of 36 hydatid cysts in which ultrasound demonstrated an overall echogenic appearance. The following ultrasound characteristics of an abdominal mass suggest the diagnosis of hydatid cyst: round or oval shape, well‐defined borders, partial wall calcification, peripheral cystic structures, internal echogenic linear formations, snowstorm and/or hyperechogenic internal echo pattern, and posterior acoustic enhancement. A comparative study with computed tomography has also been carried out in 10 of these cysts. Pathologic correlation in most cases allows us to postulate that this appearance represents an overmature, probably ruptured, hydatid cyst.
Reverse flow in the human fetal descending aorta as a sign of severe fetal asphyxia preceding intrauterine death
Authors: Illyés Miklós , Gáti István 
Published: February 2007

AbstractFlow velocity waveforms (FVW) in the descending part of the human fetal aorta were monitored in 35 cases of severe intrauterine growth retardation (IUGR) showing pathological intrauterine circulation (end‐diastolic block). In 5 of the 35 fetuses, reversed aortic flow was observable during diastole and the simultaneously recorded CTG findings were pathological. All 5 fetuses having this circulatory sign died in utero within the next day. Controls were 260 healthy fetuses with normal growth curves; no end‐diastolic block or reverse flow was found in this group. Diastolic reverse flow in the fetal descending aorta appears to reflect severely altered circulation preceding imminent fetal death.
The sonographic appearance of the irradiated breast
Authors: Calkins Alison R , Jackson Valerie P , Morphis James G , Stehman Frederick B 
Published: February 2007

AbstractA dedicated supine breast ultrasound scanner was used to perform 48 bilateral breast sonograms on 21 patients who had undergone segmental resection and radiation therapy for breast cancer. Skin thickening was seen in 13 of 21 patients (62%). There was an increased echogenicity of the fat in 13 patients (62%) and poor definition of Cooper's ligaments in nine patients (43%). Fifteen patients (71%) had decreased compressibility and 8 (38%)had decreased penetration of the sound beam into the breast. The radiation changes were seen as early as one month after the completion of radiotherapy and improved by one year in the majority of patients studied with sequential sonograms.
Oligohydramnios associated with bilateral multicystic dysplastic kidneys: Prenatal diagnosis at 15 weeks' gestation
Authors: Stiller Robert J , Pinto Margarita , Heller Charles , Hobbins John C 
Published: February 2007

AbstractLethal fetal renal malformations are invariably associated with oligohydramnios in late antennatal ultrasound examinations. Controversy exists concerning the contribution of fetal urine production to amniotic fluid volume prior to 20 weeks' gestation. We report a pregnancy complicated by maternal gold usage and fetal bilateral multicystic dysplastic kidney disease in which oligohydramnios was detected at 12 weeks' gestation. To our knowledge, no previous cases of lethal fetal renal anomalies have been made in the first trimester. The early diagnosis of fetal renal anomalies, fetal renal contribution to amniotic fluid production, and possible teratogenicity of gold therapy is discussed.
Local texture analysis: An approach to differentiating liver tissue objectively
Authors: Schuster E. , Knoflach P. , Grabner G. 
Published: February 2007

AbstractThe usefulness of local textural analysis in identifying diseases of the liver has been evaluated. In comparing two areas texturally, a random distribution of one or several textural parameters indicates identical tissue, whereas a distinct clustering can be used to discriminate between different tissues. Using this procedure, various diseases of the liver were differentiated accurately whereas different images of the same state of the liver were classified as similar with high accuracy.The consistent results with different patients, sections, sample locations and scanner parameter settings demonstrate that these factors have no impact on the characteristics of the resulting pattern used for discrimination and therefore for the final diagnosis.The overall diagnostic accuracy of this method seems better than conventional sonographic evaluation of parenchymal liver disease and at least competitive with other computerized methods described. The most important result clinically seems to be the high accuracy in differentiating between hepatitis and normal liver, which cannot be achieved by conventional ultrasonography.
A comparison of two different ultrasound methods for estimating fetal weight in preterm gestations
Authors: Campbell Winston A. , Vintzileos Anthony M. , Nochimson David J. 
Published: February 2007

AbstractA prospective study was conducted to evaluate the estimation of fetal weight in preterm pregnancies by use of ultrasound measurements. Two equations for estimating fetal weight, one proposed by Shepard and associates and the other by Hadlock and associates, were evaluated. The ability to estimate fetal weight accurately was evaluated with respect to birth weight and menstrual age. Shepard's equation is associated with a lower mean signed percent error than Hadlock's, when the birth weight is less than 1500 g (4% vs 12%) or when the menstrual age is between 23 weeks to 30 weeks (2% vs 10%). However when the birth weight is between 1500 g and 3500 g, or the menstrual age is between 31 weeks to 36 weeks, Hadlock's equation has a lower mean signed percent error: 1% vs −4% for the birth weight category and 2% vs −3% for the menstrual age category. In preterm gestations both equations estimate fetal age weight with a low mean signed percent error–Shephard's −0.4% versus Hadlock's 6.0%.
FM sonography in gallbladder disease: Efficacy and comparison with conventional sonography
Authors: Henley David S , Ralls Philip W , Johnson Meade B , Colletti Patrick M , Randall D Radin , Boswell William D , Halls James M 
Published: February 2007

AbstractA new type of ultrasound signal processing (“FM sonography”) appears to be beneficial compared to conventional ultrasound (“AM sonography”) in some applications (e.g., diffuse liver disease and prostatic carcinoma). Despite these possible advantages, it is doubtful FM sonography will be widely used unless it is at least as useful as conventional (AM) sonography in all common applications.Fifty‐five patients with suspected gallbladder disease were independently evaluated with both AM and FM sonography. The two modalities were blindly and prospectively compared for accuracy in detecting gallstones and for image quality. No statistically significant difference was found between images produced by FM and conventional signal processing. FM had an accuracy of detecting gallstones of 98.1%, compared to 96.2% for AM. Overall, FM accuracy was 97.7%, while AM had an overall accuracy of 97.3%. Other useful sonographic signs were evaluated (gallbladder wall thickness, diameter of common duct). No AM/FM difference was noted.Our data suggest that FM‐only imaging could be performed in patients with suspected gallbladder disease without loss of accuracy.
Comparison of blood velocity waveform indices recorded by pulsed Doppler and continuous wave Doppler in the umbilical artery
Authors: Van Vugt J. M. G , Ruissen C. J , Nienhuis S. J , Hoogland H. J , de Haan J 
Published: February 2007

AbstractA comparison was made between the AB ratio, resistance index (RI), and pulsatility index (PI), calculated from tracings obtained by pulsed Doppler (PD) and continuous wave (CW) Doppler devices in 14 uncomplicated singleton pregnancies. The AB ratio, RI, and PI were a slightly higher for the CW Doppler compared to the PD system, although not significantly (p = 0.18, p = 0.21, and p = 0.44, respectively). The difference in signal to noise ratio (S/N ratio) between the PD and CW Doppler systems was felt to be the reason for the discrepancy in the calculated velocity waveform indices.
Clinical significance of sonographic findings in the abnormal but intact rotator cuff: A preliminary report
Authors: Crass Jeffrey R , Craig Edward V , Feinberg Samuel B 
Published: February 2007

AbstractShoulder pain is a common orthopedic problem. Clinical examination is often nonspecific and arthrography is normal in those patients with the most frequent cause of shoulder pain—noncalcific tendonitis secondary to impingement.Ultrasonography has recently shown itself to be of value in the diagnosis of rotator cuff tears. In addition to the diagnosis of tears, however, sonography can demonstrate abnormalities within the intact rotator cuff tendon. These abnormalities consist of changes in echogenicity and thickness of the tendon. The patterns of abnormality demonstrated correlate with pathologic changes seen in tendonitis.This preliminary study suggests that the ability to demonstrate an abnormal rotator cuff tendon has potential for becoming a valuable aid to the orthopedist in allowing confident diagnosis of rotator cuff disease in the presence of nonspecific symptomatology and an intact tendon.
The impact of routine admission abdominal sonography on patient care
Authors: Verbanck Johan J , van Aelst Filip , Rutgeerts Louis , Demuynck Hilde , Ghillebert Gilbert , Vergauwe Philippe , Tytgat Hendrik , Segaert Marc 
Published: February 2007

AbstractIn a prospective study of 1000 consecutive patients, abdominal sonography added diagnostic information to that available by history and physical examination in 8.9%. The yield ranged from a high of 27.4% in patients with acute abdominal symptoms to a low of 2.7% in screening sonograms of patients without abdominal symptoms. Sonographically guided biopsy‐proven diagnoses were obtained in 6.6% of the patients and were clinically not suspected in 4.4%. The percentage of false‐positive and false‐negative sonographic studies was 0.5% and 1.1%, respectively. Sonography shortened the duration of hospitalization in 15.3%.
In utero growth of the large‐for‐menstrual‐age fetus
Authors: Miiler Joseph M. , Kissling Grace E. , Brown Haywood L. , Nagel Patricia M. , Korndorffer Frederick A. , Gabert Harvey A. 
Published: February 2007

AbstractIn a cross‐sectional study of 87 large‐for‐menstrual‐age term infants, intrauterine growth was found to be linear, 34 g per day. Differences between diabetic and nondiabetic pregnancies were not evident.
Mathematical modeling of fetal limb growth
Authors: Merz Eberhard , Grüßner Angelika , Kern Franz 
Published: February 2007

AbstractUsing ultrasound measurements of the femur, tibia, humerus, radius (N = 515), and fibula and ulna (N = 385) from normal fetuses between 12 and 40 completed weeks of gestation, growth models were determined for each bone by computer analysis. On the basis of residual analysis, growth of fetal limb bones could best be expressed as a function of tangens hyperbolicus. Growth profiles and growth data are shown with 5th, 10th, 50th, 90th, and 95th percentiles. These results are compared with previous investigations of limb bone measurements.
Evaluation of fetal growth by ultrasonography in twin pregnancy: A comparison between individual and cross‐sectional growth curve standards
Authors: Simon Nicolas V. , Deter Russell L. , Hassinger Kathryn K. , Levisky John S. , Stefos Theodor , Shearer David M. 
Published: February 2007

AbstractCross sectional curves and individual fetal growth curves standards from the Rossavik growth model [P = c(t)k + 8(t)] were generated for abdominal and head circumferences, femur diaphysis length and estimated fetal weight from a sample of 59 women with twin pregnancy. These curves were compared to their counterparts in singleton pregnancies. Cross sectional curves of the four fetal anatomic parameters under study fell progressively below the curves for singletons during the last trimester of gestation. In contrast, there were few differences between individual fetal groth curve standards for twin and singleton pregnancies. In 11 of the 59 patients, both methods were used to evaluate fetal growth in the last trimester of gestation. In 5 of these patients, fetal growth was normal by both methods in all 10 fetuses. In the 6 other patients, there were 3 fetuses with anormal estimated fetal weights (EFWs) by both population and individual standards. However, 3 fetuses had abnormal EFWs by populations standards but not by individual standards while the EFW of another fetus was abnormal by individual standards but not by population standards. These results illustrate that the cross‐sectional approach to the assessment of growth in twins can be misleading and may lead to incorrect conclusions concerning the growth of these fetuses.
Fat pad vs. anterior subphrenic abscess: A new real‐time sign
Authors: Vijayaraghavan S. Boopathy 
Published: February 2007

AbstractAn echo‐poor band of fat is seen between the anterior surface of the left lobe of the liver and the anterior abdominal wall in 25% of patients undergoing an abdominal scan. A similar appearance can be seen in an anterior subphrenic abscess. Normally, with respiration the liver can be seen to slide deeply to this fat band. If the band is due to subphrenic abscess, there is a differential movement due to fixation of the anterior part of the liver. This feature was seen in 4 patients proven to have subphrenic abscesses. This real‐time sign is helpful in differentiating if the band is due to fat or to subphrenic abscess.
Comparison of dynamic image and pulsed Doppler ultrasonography for the diagnosis of intrauterine growth retardation
Authors: Ott William J. 
Published: February 2007

AbstractDynamic image and pulsed Doppler ultrasonography were used to evaluate 104 potentially growth‐retarded fetuses. The two techniques were compared, and then used together to predict whether or not the neonate would be growth retarded. Both ultrasonic diagnostic techniques showed good correlation with neonatal outcome, but their combined use improved diagnostic accuracy.
Transdiaphragmatic liver scanning: A new intraoperative imaging technique for examination of the liver from the thoracic cavity
Authors: Machi Junji , Sigel Bernard , Kurohiji Toshihiko , Hayashida Ryozo , Takeda Jinryo , Kakegawa Teruo 
Published: February 2007

AbstractIn order to examine the liver during thoracotomy, a new intraoperative imaging technique called “transdiaphragmatic liver scanning” was developed. Trans‐diaphragmatic scanning performed with high‐frequency transducers provided clear visualization of the entire liver from the thoracic cavity through the diaphragm. In our study, transdiaphragmatic scanning was used in 27 thoracotomy operations performed for the treatment of malignant diseases, including lung and esophageal cancers. One 5‐mm liver cyst, one 3‐mm × 4‐mm hemangioma, and one 5‐mm × 6‐mm ill‐defined lesion (possible metastasis), all of which were unrecognized preoperatively, were detected. In 3 operations, preoperatively suspected liver metastases were excluded by transdiaphragmatic scanning. Because transdiaphragmatic scanning provides high‐resolution images of the liver and is the only method capable of examining the liver during thoracotomy, this intraoperative scanning technique may become a useful tool in the evaluation of liver metastases from thoracic or mediastinal malignancies.
The value of endovaginal sonography and urinary human chorionic gonadotropin tests for differentiation between intrauterine and ectopic pregnancy
Authors: Enk Lennart , Wikland Matts , Hammarberg Karin , Lindblom Bo 
Published: February 2007

AbstractEffectiveness of vaginal sonography combined with urinary human chorionic gonadotropin (hCG) for identification of ectopic pregnancy (EP) was studied in 107 pregnant women. Eighty‐nine women had clinical symptoms suspicious of EP. It was suggested that 18 women carried an increased risk for developing EP. In 63 women endovaginal sonography showed no evidence of intrauterine pregnancy. Fifty‐eight of these turned out to be pathological pregnancies. In 44 women endovaginal ultrasonography revealed intrauterine pregnancies. Thirty‐two of these turned out to be viable, 10 were not viable and resulted in spontaneous abortions, and 2 turned out to be EP. The sensitivity of vaginal sonography to identify a viable intrauterine pregnancy thus was 81% and its specificity was 97%. The sensitivity and the specificity for endovaginal ultrasonography for identifying EP was 96% and 71%, respectively.Endovaginal ultrasonography demonstrated an intrauterine gestational sac in 54% of the women with urinary HCG as low as 40 IU/L to 500 IU/L.These results show that endovaginal ultrasonography is a sensitive instrument for identifying both early normal intrauterine pregnancies as well as pathological pregnancies.
Changes in fetal hemodynamics with terbutaline treatment and premature labor
Authors: Sharif Dawod S. , Huhta James C. , Moise Kenneth J. , Morrow Robert W. , Yoon Grace Y. 
Published: February 2007

AbstractThe aim of this study was to examine the fetal hemodynamic effects of terbutaline treatment and premature labor. Image‐directed pulsed and continuous wave Doppler ultrasound studies, using 3.3‐MHz and 5‐MHz transducers (GE PASII and ATL echocardiographic machines), were used to assess fetal cardiac blood velocities in three groups of pregnancies matched for menstrual age (MA). Group 1: 13 normal pregnancies, mean MA 31 weeks. Group 2: 7 women in premature labor prior to tocolytic therapy, mean MA 32 weeks. Group 3: 8 women treated with terbutaline, average dose 18.8 mg daily, for previous premature labor, mean MA 31 weeks. Heart rate averaged 150 bpm, 135 bpm, and 127 bpm in the terbutaline, premature labor, and normal groups, respectively, and each were significantly different from each other. Products of time velocity interval and heart rate at the aortic valves were 1603 cm ± 140 cm, 1413 cm ± 190 cm and 1238 cm ± 200 cm, and at the mitral valves 1102 cm ± 170 cm, 812 cm ± 110 cm, and 878 cm ± 150 cm in the terbutaline, premature labor, and the normal groups, respectively. Aortic and mitral blood velocity products of time velocity integrals and heart rates were significantly higher (p = 0.01) in the terbutaline group relative to the normal group. In addition, the terbutaline group was significantly higher than the labor group at the mitral valve (p = 0.01). There was no statistically significant difference in time velocity integrals (a measure of stroke volume) at either valve between the three groups.It is concluded that both terbutaline and premature labor are associated with higher fetal heart rates relative to normals. Higher fetal heart rates were associated with increased left‐sided cardiac blood flows. Stroke volume was constant with increased heart rate, suggesting increased cardiac contractility with both preterm labor and terbutaline treatment.
Ultrasonography of nodular and infiltrative lesions of the skin and subcutaneous tissues
Authors: Nessi Renato , Betti Roberto , Bencini Pier Luca , Crosti Carlo , Blanc Marco , Uslenghi Carlo 
Published: February 2007

AbstractUltrasonography with high‐frequency probes was performed on 80 dermatological patients carrying palpable lesions of the skin. The case list included hemo‐and lymphangiomas (16 cases), cysts (13 cases), Kaposi sarcomas (9 cases), and panniculitis (20 cases). All lesions underwent open biopsy and histological examination.Ultrasound yielded technically adequate images in 74/80 cases (93%). Angiomas appeared as multiple transonic cavities separated by hyperechoic septa; cysts were usually echo free or weakly echogenic, with smooth outlines. Kaposi sarcomas corresponded to superficial hypoechoic nodules with blurred margins, while panniculitis appeared as a diffuse thickening of the subcutaneous space. When acute inflammation was present, as in most cases of erythema nodosum, a nonhomogeneous hypoechoic pattern was found.
Is the corpus luteum normal after ovulation induction?
Authors: Lenz Suzan , Lindenberg Svend 
Published: February 2007

AbstractRepeated ultrasound examinations and blood samplings for determination of estradiol (E), progesterone (P), and luteinizing hormone (LH) were carried out in 15 normal and 11 clomiphene citrate (CC)/human menopausal gonadotropin (hMG) stimulated cycles. Human chorionic gonadotropin (hCG) was administered in the stimulated cycles on the day of the expected LH‐peak as determined in each woman's normal cycle. Ovulation and normalcy of the luteal phase were confirmed by the hormonal values. Ultrasound examinations showed development of a single follicle in the normal group and development of 4.1 follicles on average, of 15 mm or more in diameter in the stimulated group (total of 45 follicles). Midluteal phase images at the site of the former follicle showed echogenic structures or echo‐free structures with scattered echoes in 25 cases in the stimulated group and in 11 cases in the normal group. There was no sign of the former follicle in 1 and 3 cases, respectively, in the two groups. A significantly higher number of “persistent follicles” was seen in the stimulated group: 42% vs. 7%. It is discussed whether a compromized corpus luteum function occurs after stimulation despite a normal luteal phase.
Major complications and deaths due to interventional ultrasonography: A Review of 8000 cases
Authors: Nolsøe Christian , Nielsen Lars , Torp‐Pedersen Søren , Holm Hans Henrik 
Published: February 2007

AbstractComplications related to approximately 8000 ultrasound‐guided punctures performed in our institution during the last 19 years are reported. This study includes 3500 fine needle biopsies, 700 large bore needle biopsies, 2800 punctures of fluid collections using either a 1.2‐mm spinal needle or a 7.5 F pigtail catheter, and 1000 percutaneous nephrostomies. The majority were abdominal punctures. The complication rate was 0.187% (0.100% to 0.313%) and the mortality rate 0.038% (0.013% to 0.113%). Using the fine needle data exclusively, these rates were 0.200% (0.086% to 0.400%) and 0.028% (0.000% to 0.171%), respectively. The 95% confidence limits are in brackets.