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121.
Fibroepithelial polyps are the most frequently observed mesenchymal tumors of the renal pelvis. We report on one case of
fibroepithelial polyp of the renal pelvis with unusual CT findings of totally cystic structure with septations.
Received: 27 July 1998; Revised: 6 January 1999; Accepted: 8 February 1999 相似文献
122.
Etherington J Keeling J Bramley R Swaminathan R McCurdie I Spector TD 《Calcified tissue international》1999,64(5):389-393
To measure the physiological changes in bone in response to strenuous exercise we performed a prospective study of male army
recruits over 10 weeks of basic training. Measurements performed at the start and completion of training consisted of ultrasound
(US) measurements of the heel: velocity of sound (VOS in m/seconds) and broadband ultrasound attenuation (BUA in dB/MHz) and
bone turnover markers; osteocalcin (OC), bone-specific alkaline phosphatase (BALP), and tartrate-resistant acid phosphatase
(TRAP). Forty subjects were recruited for the study and 26 completed training. Over the 10-week study period there was a significant
1.7% fall in mean VOS [mean paired difference (mpd) 27.2 m/second, SEM 9.5 (95% CI 7.5–46.8) P= 0.009] and a nonsignificant 3.4% increase in BUA (P= 0.159). There were significant falls in markers of bone formation OC [11.6%, mpd 0.11 μg/liter (95% CI 0.07–0.14) P < 0.001] and BALP [13.3%, mpd 3.49 U/liter (CI 0.80–6.18) P= 0.013] and a nonsignificant 9.5% fall in TRAP a marker of bone resorption. The 10 recruits subsequently injured had a significantly
lower VOS on entry [mean difference 24.2 m/seconds (95% CI 4.6–43.7) P= 0.017] and nonsignificantly raised BUA and baseline levels of all bone markers. The ultrasound changes may be accounted
for by increase in trabecular separation and a fall in trabecular connectivity due to microfracture. The decrease in bone
markers implies a fall in bone turnover.
Received: 26 June 1997 / Accepted: 26 August 1998 相似文献
123.
Ultrasound densitometry has been measured in the os calcis of 31 stroke patients (14 women, 17 men), ages 46–87 years, to
determine whether bone density is lower than expected for normal subjects at this site, and to investigate whether or not
the stroke side has lower values than the nonstroke side. We have also measured a large control group of 268(39 men, 228 women)
subjects who showed similar values to other published data. Immobility is a known precursor to bone loss and so we also compared
ultrasound Stiffness Index with an index of mobility in 22 of the stroke patients. In healthy subjects, ultrasound densitometry
(measured as Stiffness) fell by 25% in females from 48–52 to 68–72 years. Stiffness (expressed as z-score) in patients with
stroke was low in females (P < 0.02) but not in males, but both stroke side and nonstroke side were equally low. Stiffness did not decline with time since
stroke, but did correlate with mobility after stroke, on the stroke (r = 0.73) and nonstroke (r = 0.62) side. The data suggest
that stroke patients, particularly females, have low bone density before the stroke event. The greater ultrasound Stiffness
with increasing mobility after stroke may suggest that active rehabilitation after stroke may produce denser bone.
Received: 30 July 1997 / Accepted: 10 June 1999 相似文献
124.
视网膜脱离巩膜环扎术后眼前节结构的初步观察 总被引:4,自引:0,他引:4
目的 观察巩膜环扎术后眼前节结构的变化,探讨术后继发性闭角型青光眼的发病机制。方法 应用超声生物显微镜检查30例(33只眼)孔源视网膜脱离患者术前、后3-7天的活体奶前节形态结构,并分别进行定量测定,检查结果经统计学分析两组间配对tswcw,以P〈0.05作为差异有显著性标准。结果 术前1只眼存在裂隙样睫状体脱离。术后11只眼(33.3%)发生睫状体脱离,睫状体增厚水肿;术前睫状体厚度为(821. 相似文献
125.
外伤性白内障术前B超检查的临床意义 总被引:5,自引:0,他引:5
目的 探讨外伤性白内障术前采用B超检查后囊破损情况的临床意义。方法 外伤性白内障30只眼,术前采用B超检查评估后囊情况,显微镜下白内障摘除术中直接观察后囊情况并记录。结果 14只眼术前B超检查后囊完整,手术证实12只眼后囊完整,2只眼后囊小破坏。16只眼术前B超检查后囊破损,手术证实14只眼后囊存在大小不等的破损,2只眼后囊完整。结论 外伤性白内障术前B超检查为非侵入性、无痛性检查方法,操作简便, 相似文献
126.
While anxiety appears to characterize humans who administer high doses of cocaine or experience withdrawal from cocaine, it is difficult to capture this aspect of cocaine effects in animals. The present study investigated if acute or protracted withdrawal from prolonged low-dose cocaine that is self-administered via the oral route could be detected in tactile startle and vocal distress responses of rats. Adult, male Long-Evans rats had access to cocaine solution (0.1 mg/ml) either for 24 or 4 h/day using the two-bottle choice technique. The amount of solution consumed from each bottle was measured daily for 30 or 60 days. On days 1, 3, 7, 14, 21, 28 of withdrawal, startle and ultrasonic vocal responses (USV, 15–35 kHz) were measured in response to 18 airpuff stimuli (20 psi). Rats drank an average of 5–20 mg/kg per day of the cocaine solution. On average, about half of the daily liquid was consumed from the cocaine solution-containing bottle. USVs were emitted at significantly increased rates on day 3 of withdrawal from 30 or 60 days of cocaine drinking. Startle reactions were slightly, but non-significantly increased on day 1 of withdrawal. Comparable to withdrawal from ethanol, morphine, and diazepam treatments, withdrawal from oral self-administration of low to moderate doses of cocaine increases the rate of ultrasonic vocalizations while increasing minimally the amplitude of startle responses to low-intensity tactile stimuli. Nevertheless, no correlation between the total amount of cocaine self-administered or the duration of treatment with the intensity of the withdrawal manifestations could be detected. 相似文献
127.
Comparison of ultrasound transmission velocity with computed metacarpal radiogrammetry and dual-photon absorptiometry 总被引:2,自引:0,他引:2
A. Sili Scavalli M. Marini A. Spadaro V. Riccieri A. Cremona A. Zoppini 《European radiology》1996,6(2):192-195
The aim of our study was to evaluate the validity of a quantitative US technique for measuring the bone density of the proximal phalanges of the nondominant hand compared with computed metacarpal radiogrammetry and dual-photon absorptiometry (DPA) of the lumbar spine. Mean US bone velocity (UBV) correlated with mean metacarpal cortical index (MCI), with mean metacarpal bone density (MBD) and with bone mineral density (BMD) of the lumbar spine, whereas it was correlated negatively with age and menopause duration. The average UBV was significantly higher in premenopausal women than in postmenopausal women, and higher in normal lumbar DPA patients than in reduced lumbar DPA patients. We conclude that the US evaluation of the nondominant hand proximal phalanges may be a new alternative way for measuring bone mass in screening of osteoporosis.
Correspondence to: A. Sili Scavalli 相似文献
128.
José A. Budo M.D. 《Aesthetic plastic surgery》1996,20(6):489-493
The last decade has been marked by the development of liposuction. A better knowledge of the anatomy of fat tissue, together with an improvement in different devices, has made our results more predictable. However, such areas as the chin, anterior and inner thigh, and knee have remained difficult. This is especially true when large volumes of fat need to be removed. Blood loss has remained a problem as well. The development of ultrasound (U.S.) liposuction is a big step toward even more predictable results and to where blood loss can be negligible.Lipectron B.U.S. Endotron is a device manufactured by and available from MEDICA MAT s.a., Avenue Augustin Dumont 59, F-92240 MALAKOFF. 相似文献
129.
目的评价经超声引导成人与儿童肾活检术的方法和安全性。方法83例肾脏病患者超声引导下经皮穿刺活检,经右肾或左肾下极进针,方向自外下向内上,沿肾下极皮质取材。结果68例获取足够肾组织,总成功率及3针以内成功率分别为82%、53%,成人与儿童间无差异(P>0.05)。肾活检并发症儿童以疼痛为主,成人以血尿为主。结论超声引导下成人与儿童肾活检术是安全可靠的,其病理诊断对临床治疗具有明确的指导意义。 相似文献
130.