ISSN:0091-2751    

DOI:10.1002/jcu.1870120302

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

年代:1984

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870120319

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

年代:1984

数据来源: WILEY

摘要:

AbstractTongue movement during production of the speech sounds /a/, /i/, and /k/ was examined with a real‐time sector scanner positioned submentally. With this technique, it is possible to obtain excellent visualization of the tongue surface and to identify much of the intrinsic soft tissue anatomy of the tongue and floor of the mouth. Tongue movement and configuration were found to be consistent for 10 normal speakers, especially for /i/and /k/. Three patients with neurological disease and dysarthria showed varying but significant differences in articulation compared to normals. It appears that real‐time ultrasound imaging of the oral cavity is a potentially valuable technique for the clinical investigation of normal and abnormal spe

ISSN:0091-2751    

DOI:10.1002/jcu.1870120303

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

年代:1984

数据来源: WILEY

摘要:

AbstractRenal ultrasonographic studies were done in 26 patients with acute tubular necrosis. Prominent findings were an increase in renal size, especially the anteroposterior diameter, and sharp delineation of swollen pyramids. The ratio of anteroposterior to longitudinal diameter (WL) was correlated with serum creatinine levels and inversely correlated with urine osmolalities. It was well correlated with the recovery time of acute renal failure. The patient group having an increased H/L had a mean recovery time of 32.4 days and 11 of the 12 patients required hemodialysis (mean of 10 times). The patient group having a normal H/L had a mean recovery time of 15.5 days and 9 of the 14 required hemodialysis (mean of 3 times).

ISSN:0091-2751    

DOI:10.1002/jcu.1870120304

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

年代:1984

数据来源: WILEY

摘要:

AbstractUltrasound was used for a serial evaluation of gallbladder modifications in 61 patients with acute viral hepatitis during both the acute phase of the illness and recovery. Most of the patients studied within 7 days from the onset of symptoms and/or jaundice showed sonographic abnormalities of the gallbladder (increased wall thickness, reduced volume, abnormal bile content). A normal ultrasound pattern of the gallbladder was progressively restored during the clinical recovery in most of the patients. A statistical correlation was found between the gallbladder wall thickness and the alanine transferase index.

ISSN:0091-2751    

DOI:10.1002/jcu.1870120305

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

年代:1984

数据来源: WILEY

摘要:

AbstractRecently ultrasound has been found to be extremely useful in detecting intracardiac thrombi as well as intracranial hemorrhages in neonates. The principal criterion used for clinical diagnosis of thrombus has been an increase in the echogenicity of clotted blood. However, echogenicity is a rather nonspecific and qualitative description of tissue ultrasonic properties. A rise in echogenicity could be the result of an increase in ultrasonic backscatter, or a decrease in attenuation, or a combination of both. In order to ascertain the mechanism responsible for the clinically observed increase in echogenicity and thus put the technique on a firm foundation, we have measured serially the ultrasonic velocity, attenuation and backscatter in human blood up to 24 hours following the onset of coagulation. Preliminary results show that all three ultrasonic properties increase during this time period. At 24 hours following clotting, the mean rises in velocity, attenuation and backscatter are 3.36 ± 0.35 ± 103cm/sec, 2.3 ± 0.22 db/cm and 18.5 ± 1.2dB per unit volume of blood (at 7.5 MHz and a temperature of 23°C), respectively. These results indicate that the increase in echogenicity of a thrombus is due to a substantial increase in ultrasonic backscatter, which is moderated to a certain extent by the accompanied increase in attenua

ISSN:0091-2751    

DOI:10.1002/jcu.1870120306

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

年代:1984

数据来源: WILEY

摘要:

AbstractThe efficacy of different ultrasound methods for the detection of extracranial arterial disease (E AD) was evaluated on the basis of the comparison with angiography. High‐resolution B‐scan imaging combined with a multigated pulsed Doppler flow pattern analysis (Duplex system) achieved the best results for the detection of morphological and hemodynamic changes ofnonstenotic lesions and low grade stenosis.However, a technically unsatisfactory examination rate of 19%, the failure to differentiate between total and subtotal carotid occlusions, underestimation of significant stenosis and impracticable vertebral flow studies were disadvantages of the Duplex technique. CW‐Doppler examinations proved to be more precise and more reliable for the detection ofsignificant stenosis and occlusions.Since vertebral blood flow studies were impractical with the Duplex system, CW‐Doppler provides more comprehensive information about the hemodynamics of cerebral blood

ISSN:0091-2751    

DOI:10.1002/jcu.1870120307

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

年代:1984

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870120308

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

年代:1984

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870120309

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

年代:1984

数据来源: WILEY

ISSN:0091-2751    

DOI:10.1002/jcu.1870120310

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

年代:1984

数据来源: WILEY