bluuebunny/crossref_metadata_2025_split huggingface dataset:
Development and application of new equipment for transrectal ultrasonography
Authors: Watanabe Hiroki , Igari Dairoku , Tanahasi Yoshikatsu , Harada Kazuya , Saitoh Masahito 
Published: February 2007

AbstractWe have successfully developed a new type of equipment for transrectal ultrasonography. The equipment consists of three parts: a transducer assembly, a radial scanner, and a chair. The specially designed transrectal transducer assembly consists of a double tube system; a concave oscillating disc is attached to the rotative inner tube. The top of the transducer tube is covered with a water‐filled rubber balloon which is kept in contact with the rectal wall. The chair has a hole over which the anus is positioned and the tube with the radial scanner is introduced into the rectum from below. The angle of the. projecting transducer tube can be shifted freely with a lever. The depth of insertion of the transducer is controlled by the scanner handle. This “sitting posture” procedure has several advantages over the lithotomy position. The diagnostic application of this method is described for examination of different intrapelvic organs such as the prostate, the urinary bladder and the uterus.
The measurement of systolic time intervals by echocardiography
Authors: Vredevoe Lawrence A. , Creekmore Stephen P. , Schiller Nelson B. 
Published: February 2007

AbstractA study was performed in which the systolic time intervals of 46 patients were measured directly from echocardiograms of their aortic valve motion. These intervals were compared with those obtained from the same patients by the conventional technique of simultaneously recording the carotid pulse, phonocardiogram and electrocardiogram. Several of the measurements were made simultaneously by the two techniques in order to compare the timing of the systolic cycle. The values obtained by the two techniques were in close agreement, with average deviations of 11% or less. This study demonstrates the feasibility of measuring systolic time intervals directly from echocardiograms.
Ultrasonography of the chest wall
Authors: Ekstrand Kenneth E. , Blake Damon D. , Dixon Robert L. 
Published: February 2007

AbstractUltrasonography of the chest wall has been used to aid in radiation therapy treatment planning. The sonogram reveals the lung surface and the sternum in relation to the skin surface. Tumor tissue tends to be more sonolucent than normal breast tissue. This technique has been used to detect post‐mastectomy recurrent tumor.
Opthalmologic effect of ultrasound at diagnostic intensities
Authors: Ziskin Marvin C. , Romayananda Nongnart , Harris Kenneth 
Published: February 2007

AbstractThis study examined the possible harmful effects on the eye of prolonged exposure to ultrasound at diagnostic intensities. The left eyes of 20 rabbits were exposed to 9.5 mHz continuous wave ultrasound at 33.7 mW/cm2 for one to four hours. The right eyes serves as controls. Careful gross and microscopic examination did not reveal any morphological effects caused by ultrasonic irradiation.
Echographic evaluation of abdominal tumor regression during antineoplastic treatment
Authors: Kobayashi Toshji , Osamutakatani  , Hattori Nobu , Kimura Kiyoji 
Published: February 2007

AbstractTwenty patients with malignant abdominal tumors were evaluated by compound contact B‐mode ultrasonic scanning. The studies were carried out during and after antineoplastic treatment with chemotherapy, radiation or surgery. Gain and sensitivity settings were kept constant before and after treatment. The changes in echographic findings were correlated with clinical, laboratory and/or autopsy findings. Ultrasound proved to be a very useful and convenient way to evaluate the antitumor effect of various chemotherapeutic agents. Typical echograms are shown to illustrate the method of ultrasonic evaluation.
Acoustic microscopy of mammalian kidney
Authors: Kessler L. W. , Fields S. I. , Dunn F. 
Published: February 2007

AbstractAcoustic micrographs of unstained specimens of mouse kidney were produced at frequencies of 100 MHz and 220 MHz with resolutions of 20μ m and 9μm, respectively. The acoustically revealed structure has been examined in relation to established microanatomy. High contrast details corresponding to connective tissue boundaries of supporting elements of the nephron are exhibited. In addition, various regions of the kidney such as the cortex and the three medullary regions can be differentiated. At these frequencies, the acoustically exhibited structures are considered to result from scattering at connective tissue interfaces, resulting from local acoustic impedance discontinuities, rather than from intrinsic acoustic absorption within the microstructures of the tissue.
Gray scale ultrasonography in the diagnosis of thyroid swellings (work‐in‐progress)
Authors: Taylor K. J. W. , Carpenter D. A. , Barrett J. J. 
Published: February 2007

AbstractThyroid masses which fail to concentrate radioactive iodine may be benign or malignant cysts or solid tumors. A‐scan examination through any thyroid mass permits the differentation of a solid from a cystic consistency. The nature of solid masses is difficult to determine using the conventional B‐scan ultrasound equipment. Our experience to date suggests that the difficulty can be resolved by the use of high quality gray‐scale techniques which display the structure of normal glandular tissue, while malignant replacement is apparent as defects in this normal anatomy. The size and site of the thyroid implies that greatly improved resolution could be obtained by scanners dedicated to the examination of small superficial organs.
1974 Abstracts American Society of Ultrasound Technical Specialists
Authors: Adams Nan , Vogel John H. K. , Anderson Caroline F. , Corrigan James J. , Giles Harlan R. , Rosenberg David B. , Balint Ronald E. , Balint Ronald E. , Balint Ronald E. , Bolin Janet E. , Stipes Melanie , Carlsen Ernest N. , Chilcote Betty , Chilcote Wayne , Chilcote Betty , Chilcote Wayne , Gegor Carolyn , Gentry Fred , Brickner T. J. , Ellis R. G. , Eakin David V. , Hobbins John C. , May Dolores , Kopta Mazie M. , Korfhagen Joan , Meyer Richard A. , Kaplan Samuel , Moulton Denise , Naglish Marveen , Persaud J. A. , Schuld R. L. , Boughner D. R. , Phillips Betty J. , Friedewald Vincent E. , Poehlmann H. W. , Brown R. E. , Quinter Cynthia , Rosenberg David B. , Giles Harlan R. , Anderson Caroline F. , Smith Sally , Murray Marcia , Vinson Elvira , Shaub Michael , Wilson Robert L. , Swan Diana , Leung Richard , Cunningham Roger J. , Kroetz Frank W. , Webber Milo N. , Aguilar Francine , Cragin Michael , Willard J. W. , McKinney W. , Boyce W. H. , Wilson Edwina E. , Wodraska G. , Tenner M. 
Published: February 2007

AbstractWe are printing the ASUTS abstracts presented at their meeting in Seattle, 5 October 1974. Because of a change in policy in the convention office at Seattle, these were not published in the September issue.
Real‐time imaging with a new ultrasonic camera: Part I, in vitro experimental studies on transmission imaging of biological structures
Authors: Marich Kenneth W. , Green Philip S. , Suarez Joe R. , Zatz Leslie M. , Macovski Albert 
Published: February 2007

AbstractResults are described of in vitro biological experimentation using a new through‐transmission ultrasonic camera system developed at the Stanford Research Institute. The camera system produces real‐time focused, orthographic images of a 15 × 15 cm field. The in vitro studies, which demonstrate the diagnostic potential of the new technique, include transmission images of selected excised organs such as liver, kidney, spleen, and uterus. In addition, preliminary studies evaluating ultrasonic image quality and the effect of out‐of‐focus structures are discussed.
Ultrasonic evaluation of superficial masses
Authors: Goldberg Barry B. 
Published: February 2007

AbstractWhile superficial masses are usually apparent and easily palpated, it is sometimes difficult to determine whether they are cystic, solid, or mixed. Ultrasound was used to evaluate superficial masses determining their size, relationship to other structures and internal characteristics. In a series of 34 patients, ultrasound was able to differentiate among cystic, solid, or complex masses with a 94% accuracy.
Intracavitary echoes in patients with mitral prosthetic valves
Authors: Schuchman Harvey , Feigenbaum Harvey , Dillon James C. , Chang Sonia 
Published: February 2007

AbstractIn the course of doing routine echocardiograms on patients with mitral prosthetic valves, we observed peculiar intracavitary echoes within the left ventricle. Of the 36 valves studied in 31 different patients, 14 echocardiograms demonstrated the abnormal intracavitary echoes and 22 did not. The presence of mitral insufficiency, atrial fibrillation, systemic emboli and warfarin sodium (Coumadin) therapy were roughly equal in the two groups. A higher percentage of abnormal intracavitary echoes occurred in patients with a hemoglobin less than 11 gm/100 ml, other prosthetic valves, cloth covered valves, low platelets, and functional class III–IV. Although this study does not clarify the origin of these abnormal echoes, it is possible that they originate from particulate matter such as tiny fibrin clots or fibers from the cloth covering of the valve.
An ultrasound receiver with programmable time gain control
Authors: Barnes Ralph W. , Nomeir Abdel‐Mohsen , Pardue George T. , Nuss Patricia H. 
Published: February 2007

AbstractAn ultrasound receiver with programmable time gain control (TGC) has been developed. The TCG curve is synthesized from sequentially gated analog switches, each of which controls receiver gain over a range of lcmDiagnostic studies using a receiver with the programmable TGC curve show improved results in the amplitude equalization of received echoes and in the output display.
An ultrasonic deflector for aspiration and biopsy
Authors: Yeh En‐Lin 
Published: February 2007

AbstractA new ultrasonic deflector for aspiration and biopsy is described. It is made of a Plexiglas prism (45°) with an oblique hole (27°). The ultrasonic beam is bent in water by about 23°. A puncture needle inserted through the prism hole passes through the ultrasonic beam in water with only minimal deviation from the beam axis. A fairly strong echo from the needle tip is a useful indicator for positioning the needle for aspiration. The resolution of the ultrasonic scan is not significantly affected by the deflector. This inexpensive ultrasonic deflector is capable of performing the functions offered by the expensive ultrasonic aspiration‐biopsy transducer.
Ultrasound B‐scanning with a gray scale video hard copy unit
Authors: Lee Timothy G. 
Published: February 2007

AbstractA gray scale hard copy unit has been adapted to an ultrasound B‐scanner equipped with a video gray scale system and a conventional hard copier and a Polaroid camera. Comparative recordings were made of all three methods. The new hard copy unit produced a better gray scale image than Polaroid film, with reduction of cost and elimination of the problems inherent in Polaroid film.
Diagnosis of early pregnancy with A‐mode ultrasound A preliminary report
Authors: Haverkamp Albert D. , Thompson Horace E. , Yasuzawa S. Steve 
Published: February 2007

AbstractAn A‐mode ultrasonic analyzer was used to detect pregnancy and to determine gestational age in 102 patients, 77 of whom were pregnant and 25 of whom were not pregnant. All pregnant patients were in the first trimester. Polaroid photographs were taken of the echo pattern display and diagnosis was compared with that of the clinical examination. Results indicate, using only the Polaroid photograph of the patient's A‐scope echo pattern, it is possible to (1) diagnose pregnancy with an accuracy rate of 87.2% and (2) estimate the week of gestation, within a tolerance of 21 days of the clinical examination, with an accuracy rate of 84.5%.
Real‐time color B‐scan ultrasonography
Authors: Bronson Nathaniel R. , Pickering Norman C. 
Published: February 2007

AbstractThe development and early clinical results of a real‐time color B‐scan ultrasonoscope are described. This instrument uses color to display detailed echo amplitude information more quantitatively than is possible with gray scale. With real time, dynamic changes are seen during the examination. Conversion of the amplitude information into binary coded decimal code permits separation into ten color steps and also eliminates “blooming” of the cathode ray tube, as seen in black and white. Integrated circuitry is used, providing a portable, relatively inexpensive unit. Early clinical work in ophthalmology is illustrated.
Experiences with the echo midlinerin children
Authors: Grumme T. H. , Graef G. , Meese W. , Grauthoff H.‐J. , Amtenbrink V. , Frommel G. 
Published: February 2007

AbstractThree hundred eighty‐five children were examined with the Midliner® echoencephalography unit. In examinations termed adequate, correct interpretations were made in 94.6% of healthy children versus 78% ill children. The incidence of adequate examinations increases with the child's age, but 58% of children with hydrocephalus had inadequate examinations, regardless of age. For the measurement of the infantile ventricle system the midliner is not appropriate.
Correlation of the ultrasonic appearance of the portal vein with abdominal arteriography
Authors: Sarti Dennis A. , Lindstrom Rabbe R. , Tabrisky Joseph 
Published: February 2007

AbstractThe ultrasonic appearance and location of the portal vein is documented by correlation with abdominal arteriography. Five patients were studied by both methods. Various characteristic appearances of the portal vein are presented. The importance of localization of the portal vein during an ultrasonic pancreatic examination is discussed.
Echocardiographic observation of ventricular volume changes and swinging septal position in massive pericardial effusion
Authors: Warren Bill H. , Lynn Richard R. , Allen Frank H. 
Published: February 2007

AbstractSwinging interventricular septal position and ventricular volume changes associated with respiration were studied in a patient with massive uremic pericardial effusion and pulsus paradoxus. Inspiration was regularly associated with a posterior swinging septal position which dramatically increased right ventricular (RV) volume with a lesser change in left ventricular (LV) volume. Expiration was consistently accompanied by an anterior swing of septal position which nearly obliterated the RV with slight enlargement of the LV. The above changes produced a pendulum‐like motion of the septal position as the patient breathed. This may reflect the ventricular volume changes that accompany respiration in severe pericardial effusion associated with pulsus paradoxus.
Antenatal detection of fetal structural, defects with ultrasound
Authors: Morgan Carlisle L. , Haney Arthur , Christakos Arthur , Phillips Joseph 
Published: February 2007

AbstractA case report of a cystic hygroma detected in utero by ultrasound at 16 weeks' gestation is presented. The potential for early second trimester detection of both CNS and non‐CNS structural defects by diagnostic ultrasound is discussed. “High risk” groups for fetal structural defects can be identified for screening purposes.
Abdominal cystic lymphangiomatosis: Report of a case involving the liver and spleen and llustration of two cases with origin in the greater omentum and root of the mesentery
Authors: McQuown Dennis S. , Fishbein Michael C. , Moran E. Terrance , Hoffman Richard B. 
Published: February 2007

AbstractB‐scan ultrasonic examination of a 10hyphen;yearhyphen;old Mexicanhyphen;American female with multiple avascular hepatic and splenic defects on both isotopic and angiographic evaluation revealed numerous cystic lesions, a few of which contained numerous internal echoes. Subsequent pathological examination revealed lymphangiomatosis of the liver and spleen. Some of the cysts contained caseous material as predicted only by the ultrasonic examination. Cystic lymphangiomatosis of the spleen is a rare condition and only a few cases of involvement of both the spleen and liver have been reported. This is the first such case evaluated by ultrasound. Two cases are also illustrated of cystic lymphangiomatosis with origin in the greater omentum and root of the mesentery.
Improved radiotherapy dose calculations using ultrasound uterine localization
Authors: Wenzel Wayne W. 
Published: February 2007

AbstractAn easy noninvasive method of accurate uterine measurement using B‐mode ultrasound for subsequent intracavitary dosimetry is presented. Importance of documentation of uterine size is stressed. This method if universally adopted would help to standardize intracavitary dosimetry and thereapy results could be more meaningfully analyzed.
Choledochal cyst: Report of a case with specific ultrasonographic findings
Authors: Filly Roy A. , Carlsen Ernest N. 
Published: February 2007

AbstractA case of choledochal cyst in a 17 month old child is described. The ultrasonographic findings were felt to be specific in this case since the dilated common bile duct was noted to enter directly into a large right upper quadrant cyst. The clinical history, ultrasonographic findings, and differential diagnostic features are discussed.
Ultrasound of the parotid gland
Authors: Neiman Harvey L. , Phillips Joseph F. , Jaques Darrell A. , Brown Thomas L. 
Published: February 2007

AbstractFive cases of parotid gland masses were studied by ultrasound. Only retention cysts and true cysts of the parotid gland appear sonolucent at low and high gain settings. Benign and malignant tumor present as solid masses except for the Warthin's tumor which is sonolucent at lower gain settings but has a lattice of internal echoes at higher gain settings.
Bacterial endocarditis. Echocardiographic and clinical evaluation during therapy
Authors: Nomeir Abdel‐Mohsen , Watts Earl , Philp James R. 
Published: February 2007

AbstractIn two patients with bacterial endocarditis and apparent vegetations, the echocardiographic findings included thickening but normal excursion of the mitral leaflet and abnormal shaggy echoes superimposed on the mitral leaflet echogram. Both patients had had endocarditis several weeks before the study was performed. In both patients the abnormal echoes disappeared after antibiotic therapy. Whether or not the echocardiographic findings are specific to bacterial endocarditis must be determined by further studies. One patient had evidence of “immune complex disease” with vasculitis, hypocomplementemia, and renal failure which persisted for weeks after disappearance of vegetations on the echocardiogram. This sequence was unexpected, as a continued source of antigen for this reaction was not apparent.
The echocardiographic appearance of a partially disrupted ventricular septal defect repair: A case report
Authors: Wilson Robert L. , Shaub Michael S. , Young Guillermo 
Published: February 2007

AbstractCase report detailing the echocardiographic appearance of left ventricular outflow tract obstruction in a patient with a partially disrupted ventricular septal defect patch. After surgery, the echocardiogram revealed a normal‐appearing left outflow tract.
Ultrasonically guided percutaneous aspiration of lymphoceles following renal transplantation: A diagnostic and therapeutic method
Authors: Spigos D. , Capek V. 
Published: February 2007

AbstractPercutaneous aspirations of perirenal collections under ultrasonographic control is a safe and simple therapeutic and diagnostic procedure in patients who have developed lymphoceles after renal transplantation. The diagnostic and therapeutic yield is far superior to any other method, short of surgical exploration. We encountered no complications in our cases. The technique is described in detail.
Newer ultrasonographic anatomy in the upper abdomen: I. The portal and hepatic venous anatomy
Authors: Carlsen Ernest N. , Filly Roy A. 
Published: February 2007

AbstractGray scale ultrasonography has made it possible to identify hepatic and portal venous structures. Single sector sweep scanning is important in depicting these structures. Identification of venous structures is discussed as well as methods for distinguishing large veins from pathologic structures.
The preparation, use, and evaluation of recorded material for teaching ultrasonics in a university master of science course in medical physics
Authors: Chivers R. C. , Hills P. J. 
Published: February 2007

AbstractThe potential value of using recorded instructional material in a university Master's course module in medical ultrasonics is discussed. The procedure for preparation and evaluation of a program of slides with synchronized audio tape is reported. The evaluation indicates that the flexibility of this form of recorded material can make several unique contributions to the teaching program, in acquainting students with clinical problems, in simulating expensive equipment, and encouraging students to use the literature.
Ultrasonic evaluation of the common bile duct
Authors: Perlmutter Gordon S. , Goldberg Barry B. , Scale Gray 
Published: February 2007

AbstractThe efficacy of ultrasound in detecting a tumor in the head of the pancreas as a cause of obstructive jaundice has been well established. With gray scale imaging, it is possible to visualize the biliary tract including the common bile duct, and thereby to differentiate between extrahepatic (obstructive) and intrahepatic (hepatocellular and cholestatic) jaundice in many cases.
Spontaneous drainage of a large cystic tumor
Authors: Winston M. A. , Krishnamurthy G. T. , Taylor Ronald D. 
Published: February 2007

AbstractA case is described of a 58 year old male who presented with a large mass on the left side of the abdomen which was found to be cystic by ultrasound. A presumptive diagnosis of pancreatic pseudocyst was made. Shortly thereafter, the mass drained spontaneously further suggesting this diagnosis. At surgery a month later, however, the mass was found to be a metastic leiomyosarcoma with cystic degeneration that had eroded into the gastric wall. This case serves to illustrate that cystic abdominal masses, even ones that drain spontaneously into the gastrointestinal tract, may not be pancreatic pseudocysts.
Screening for intrauterine growth retardation using the ultrasound biparietal diameter
Authors: Hohler C. W. , Lea J. , Collins H. 
Published: February 2007

AbstractFifteen hundred patients were scanned to predict fetal age and weight by biparietal diameter measurement. Three hundred eleven patients had more than one scan. Fortythree small for gestational age (SGA) babies were ultimately delivered in this population. Prenatal ultrasound screening criteria for grouping into appropriate for gestational age (AGA) or small for gestationa1age (SGA) categories were: a only an absolute biparietal diameter below the third percentile for the reference Rochester region population; b only ΔBPD calculated as less than 50 percent of the mean growth rate for the reference population; and c a combination of these two factors. Intrauterine growth retardation was most accurately determined when an absolutely small biparietal diameter was found (at the time of the last ultrasound examination) in a woman with accurate gestational age assessment. Least accurate was the prediction based on one biparietal diameter measurement in a woman with poor clinical dates. A 50 percent false positive detection rate and poor sensitivity to intrauterine growth retardation were found using ultrasound biparietal diameter measurements as a screening test in this manner.