ISSN:0091-2751    

DOI:10.1002/jcu.1870070202

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1979

数据来源: WILEY

摘要:

AbstractThe following contribution from Dr. Holmes, founding editor ofJCU, is the first of a series of short articles that will be published on the history of ultrasound technique. It is the firm belief of the present editor that a thorough appreciation of our roots is essential for understanding where we are going. How fortunate we are to have many of the real pioneers with us to relate their experiences.

ISSN:0091-2751    

DOI:10.1002/jcu.1870070203

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1979

数据来源: WILEY

摘要:

AbstractTo assess the value of pancreatic sonography in patients suspected of having pancreatic disease, our first 500 pancreatic examinations using gray scale imaging were reviewed in a prospective manner without clinical information. Various parameters of each examination were recorded. The pancreas was localized by its relationships to surrounding vessels and the duodenum. The ability to define the head, body, and tail of the pancreas as well as anterior‐posterior size measurements were noted and recorded. A retrospective clinical pathologic follow‐up was then carried out and correlated with the1ultrasonic findings. Four categories of patients were identified. The features seen in pancreatic ultrasonography of the entire group, as well as those seen in the individual categories, were analyzed. This analysis indicates that pancreatic sonography can be used in patients suspected of having pancreatic disease, defining both normal and abnormal pancreas. A high index of suspicion for the type of abnormality present can be achie

ISSN:0091-2751    

DOI:10.1002/jcu.1870070204

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1979

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870070205

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1979

数据来源: WILEY

摘要:

AbstractReal‐time ultrasound is a dynamic imaging technique that allows in utero orientation to the fetus. It permits rapid and efficient examination of fetal anatomy and provides a dynamic assessment of fetal well‐being. The energy dissipation can be comparable to that in conventional ultrasonic B‐mode scanning. We have used both linear and dynamically focused phased arrays for fetal examinations in conjunction with conventional gray scale B‐mode scanners. The sophisticated phased‐array real‐time systems have demonstrated higher resolution and an improved gray scale as compared with the linear arrays. Applications of real‐time ultrasound in obstetrics are discussed, and appropriate clinical examples are cited that illustrate the value of the technique for study of both normal and abnormal fetal development. We believe that this technique is the most sensitive method of detecting intrauterine fetal demise. The relative advantages and disadvantages of linear and dynamically focused phased arrays in obstetric evaluation a

ISSN:0091-2751    

DOI:10.1002/jcu.1870070206

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1979

数据来源: WILEY

摘要:

AbstractA retrospective comparison between ultrasound and subsequent laparoscopy was made in 70 female patients to evaluate the sonographic features of minimal pelvic disease (in particular, adnexal thickening). The overall accuracy of sonography as compared with laparoscopy was 75 percent (53 of 70), with a true positive rate of 72 percent (40 of 51) and a true negative rate of 68 percent (13 of 19). In this study the concept of clinical or sonographic adnexal thickening did not correlate with observations at laparoscopy. Of the 7 patients diagnosed by ultrasound as having adnexal thickening, only 1 had pelvic inflammatory disease, whereas the other 6 showed no abnormalities at laparoscopy.

ISSN:0091-2751    

DOI:10.1002/jcu.1870070207

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1979

数据来源: WILEY

摘要:

AbstractThe sectional area of the splenotomogram scanned parallel to the ribs provides useful information for differential diagnosis and determination of prognosis in liver diseases. To establish a relationship between sectional area and actual spleen volume, 10 spleens obtained at splenectomy or autopsy were studied. A good linear correlation (r= 0.956) was present between the sectional area (S) and the actual spleen volume (V). The spleen volume could be calculated asV= 7.5S– 77.5. Therefore the value of the sectional area obtained from one ultrasonic splenotomogram has practical application as a parameter reflecting the spleen volume in viv

ISSN:0091-2751    

DOI:10.1002/jcu.1870070208

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1979

数据来源: WILEY

摘要:

AbstractThis article reports the results of a study designed to evaluate both pancreatic echogenicity and success of visualizing recognizable pancreatic tissue. The acoustic characteristics of the normal pancreas were compared with those of the liver. Of 100 scans reviewed, 65 scans (65 percent) depicted recognizable pancreatic tissue. Two cases were discarded on the basis of hepatocellular disease, and one case was discarded because of hepatic metastases. Thirty‐two cases demonstrated pancreatic echogenicity greater than that of the liver, and 30 cases demonstrated pancreatic echogenicity equivalent to that of the liver. We found no normal pancreas that displayed less echogenicity than the liver. A hypothesis is offered to explain the observed result

ISSN:0091-2751    

DOI:10.1002/jcu.1870070209

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1979

数据来源: WILEY

摘要:

AbstractThe sonographic parallel‐channel sign is not pathognomonic of dilatation of the biliary tree. Often, the so‐called parallel channel is a hepatic artery. The differentiation between a bile duct and a hepatic artery is usually possible with good sonographic techni

ISSN:0091-2751    

DOI:10.1002/jcu.1870070210

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1979

数据来源: WILEY

摘要:

AbstractFour hundred ninety‐two patients, including 449 pregnant patients, 39 nonpregnant control patients, and 4 patients with pelvic masses, had renal ultrasonography using gray scale technique. Measurements of renal pelvic diameters in the normal pregnant patients revealed an overall incidence of 63 percent renal pelvic dilatation over the nonpregnant controls. Maximum normal renal pelvic diameters were 1.1 cm on the right and 0.9 cm on the left. The maximum normal expected renal pelvic diameter (97.5 percent confidence level) in pregnancy is 2.7 cm on the right and 1.8 cm on the left in the last two trimesters of pregnancy. There was no significant difference between primiparous and multiparous patients, but pregnant patients were significantly different from controls in every trimester (p<0.01). Maximum dilatation occurred at 24–28 weeks of gestation. The right renal pelvis was enlarged to the greatest degree in 90 percent of normal patients. Patients with pelvic masses showed a similar pattern of right‐sided hydroneph

ISSN:0091-2751    

DOI:10.1002/jcu.1870070211

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1979

数据来源: WILEY