ISSN:0091-2751    

DOI:10.1002/jcu.1870030402

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

年代:1975

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870030403

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

年代:1975

数据来源: WILEY

摘要:

AbstractThree techniques for producing three‐dimensional ultrasonograms have been investigated. Of these, the optical holographic technique appears to have the advantages of simultaneous viewing of all levels and directions. The effects of magnification, gray scale, manipulation, and more expeditious means of producing such holograms remain to be investigate

ISSN:0091-2751    

DOI:10.1002/jcu.1870030404

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

年代:1975

数据来源: WILEY

摘要:

AbstractOphthalmopathic Graves' disease (endocrine ophthalmopathy) is difficult to diagnose with certainty in the absence of confirmatory laboratory studies. In 11 of 15 patients with proven Graves' ophthalmopathy who were studied with contact B‐scan ultra‐sonography, distinct evidence of orbital edema was demonstrated. Since these abnormalities were not encountered in any of eight patients with tumorous invasion of the rbit causing proptosis, or in any of 50 patients studied for intraocular pathology, it is concluded that contact B‐scan echography is a valuable diagnostic tool and should be utilized early in the study of all patients with orbital di

ISSN:0091-2751    

DOI:10.1002/jcu.1870030405

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

年代:1975

数据来源: WILEY

摘要:

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.

ISSN:0091-2751    

DOI:10.1002/jcu.1870030406

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

年代:1975

数据来源: WILEY

摘要:

AbstractA procedure has been devised for monitoring many critical performance characteristics of clinical ultrasound systems. It is easy to use in a clinical environment and is sufficiently precise to check system consistency or reproducibility. The procedure permits monitoring the system as a whole with enough specificity to locate malfunctioning components. The range response of the system with the beam normal to a planar reflector in distilled water at room temperature is obtained in a single Polaroid image for various control settings. System performance, excluding B mode velocity calibration, display linearity, and position registration, may be routinely monitored with a minimum of measurements. A feasibility test confirmed the method's precision, reproducibility (2%), and ease of performance.

ISSN:0091-2751    

DOI:10.1002/jcu.1870030407

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

年代:1975

数据来源: WILEY

摘要:

AbstractNumerous artifacts can occur during contact B scanning of the abdomen. These artifacts may give anatomically inaccurate scans and thus lead the interpreter into making an inaccurate diagnosis. This paper describes and illustrates artifacts resulting from improper scanning techniques, improperly set gain levels, motion related organ distortion, and acoustic reverberations.

ISSN:0091-2751    

DOI:10.1002/jcu.1870030408

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

年代:1975

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870030409

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

年代:1975

数据来源: WILEY

摘要:

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 paradoxu

ISSN:0091-2751    

DOI:10.1002/jcu.1870030410

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

年代:1975

数据来源: WILEY

摘要:

AbstractA case report of a cystic hygroma detectedin uteroby 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 pur

ISSN:0091-2751    

DOI:10.1002/jcu.1870030411

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

年代:1975

数据来源: WILEY