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91.
骨骼肌肉恶性肿瘤增强减影MRI 总被引:5,自引:2,他引:3
目的 评估增强减影在骨骼肌肉恶性肿瘤MRI中的临床应用价值。方法 5 0例骨骼肌肉恶性肿瘤病人进行MR增强扫描 ,MR对比剂采用钆喷替酸葡甲胺 (Gd DTPA ,0 1mmol/kg) ,用T1W增强后的图像与增强前的图像进行减影。通过对比度 /噪声比值 (C/Ns值 )以及肿瘤影像征象清晰程度的比较 ,对MR减影与否进行评估。结果 MR对比增强减影图像比传统的T1W增强图像显示更清晰、更直观。所有病例都经手术和病理证实。 5 0例骨骼肌肉恶性肿瘤图像MR减影的C/Ns值比传统T1W增强图像的C/Ns值高。MR减影图像的C/Ns值为 10 9 74± 5 10 ( x±s) ,传统T1W增强图像的C/Ns值为 2 3 6 1± 3 16 (t=10 1 5 1,P <0 0 5 )。减影前后肿瘤影像征象的比较结果显示 :不规则边缘 (χ2 =7 86 ,P <0 0 5 )、肿瘤分叶 (χ2 =7 16 ,P <0 0 5 )和环形强化 (χ2 =7 4 4 ,P <0 0 5 ) ,对肿瘤影像征象清晰度差异的检出具有显著性意义。结论 MR对比增强减影比传统T1WI增强更能有效地显示骨骼肌肉恶性肿瘤。对比增强减影为检出和评估骨骼肌肉恶性肿瘤方面 ,提供了一个全新的诊断工具。 相似文献
92.
Eun Yeon Joo Jee Hyun Kim Woo Suk Tae Sun Jung Han Seunghwan Kim Myoung-Hee Kim Hong Sik Byun Seung Bong Hong 《Journal of neuroimaging》2004,14(4):365-368
A patient with chronic cerebral paragonimiasis began to have new motor seizures of the right face manifested by clonic contractions that occurred several hundred times a day, consistent with simple partial status epilepticus. Ictal electroencephalogram discharges started from the left frontal region and then spread to the left hemisphere with left frontal maximum. But clinical seizures were limited to the right face. The frequent partial seizures were controlled by the intravenous infusion of phenytoin. Brain magnetic resonance imaging showed multiple conglomerated round nodules with encephalomalacia in the left temporal and occipital lobes. Applying the technique of ictal-interictal single-photo emission computed tomography subtraction, the authors were able to localize the focal ictal-hyperperfusion on left precentral cortex adjacent to the lesions that correspond to the anatomical distribution of left face motor area. 相似文献
93.
Summary Cerebellar nuclear afferents from some caudal brain stem nuclei in the cat were studied by means of retrograde transport after implantation of the wheat germ agglutinin-horseradish peroxidase complex in crystalline form in the cerebellar nuclei. The findings give evidence that projections to the cerebellar nuclei from certain nuclei of the reticular formation proper (e.g., from the gigantocellular reticular nucleus) are very modest, while there appears to be no or extremely few cerebellar nuclear afferents from the paramedian reticular, spinal trigeminal, gracile, cuneate and external cuneate nuclei. Previous tracer studies have given evidence that also the pontine and red nuclei send very few, if any, fibres to the cerebellar nuclei. All these brain stem regions are known to project to the cerebellar cortex. This relative lack of mossy fibre collaterals to the cerebellar nuclei is discussed with references to previous literature on the distribution of cerebellar nuclear afferents, and the problem of how the cerebellar nuclei are facilitated is considered.Abbreviations
Br.c.
superior cerebellar peduncle (brachium conjunctivum)
-
Br.p.
middle cerebellar peduncle (brachium pontis)
-
C.r.
interior cerebellar peduncle (restiform body)
-
HRP
horseradish peroxidase
-
L
left
-
N.c.
cuneate nucleus
-
N.c.e.
external cuneate nucleus
-
N.c.t.
nucleus of corpus trapezoideum
-
NIA
anterior interposed nucleus
-
NIP
posterior interposed nucleus
-
NL
lateral (dentate) nucleus
-
N.l.l.
nuclei of lateral lemniscus
-
NM
medial (fastigial) nucleus
-
N.m.X.
dorsal motor vagal nucleus
-
N.mes.
mesencephalic trigeminal nucleus
-
N.r.l.
lateral reticular nucleus (nucleus of the lateral funiculus)
-
N.r.p.
paramedian reticular nucleus
-
N.r.t.
reticular tegmental pontine nucleus
-
N V, VI, VII, XII
root fibres of cranial nerves
-
Ol.s.
superior olive
-
P.h.
nucleus praepositus hypoglossi
-
Py
pyramid
-
R
right
-
R.gc.
gigantocellular reticular nucleus
-
R.l.
lateral reticular nucleus of Meessen and Olszewski
-
R.p.c.
caudal pontine reticular nucleus
-
R.pc.
parvicellular reticular nucleus
-
R.v.
ventral reticular nucleus
-
Tr.sp.V.
spinal tract of the trigeminal nerve
-
T.s.
solitary tract surrounded by nucleus of solitary tract
-
V.m.
medial vestibular nucleus
-
WGA
wheat germ agglutinin
-
WGA-HRP
wheat germ agglutinin-horseradish peroxidase conjugate
-
V, VI, VII, X, XII
motor nuclei of cranial nerves 相似文献
94.
95.
96.
97.
应用促通技术治疗偏瘫20例,治疗前后对患者的肢体运动功能分别进行Brunnstrom评定和Fugl-Meyer评分。结果显示经促通技术治疗后患者的肢体运动功能明显恢复(P<O.001),且Brunnstrom评定与Fugl-Meyer运动积分密切相关。本组治愈率为35%,有效率为100%。促通技术是一种有效的治疗偏瘫的方法。 相似文献
98.
A 78-year-old woman is described who presented with a diaphragmatic hernia through the foramen of Morgagni. A definitive
diagnosis was confirmed by a sagittal view on magnetic resonance imaging prior to surgery. The hernia was repaired laparoscopically
under an abdominal wall lifting technique without pneumoperitoneum, and her symptoms completely resolved postoperatively with
no evidence of recurrence. The laparoscopic repair was considered a suitable and safe procedure for the treatment of a Morgagni
hernia.
Received: 3 April 1996/Accepted: 3 May 1996 相似文献
99.
Bilateral continuous paravertebral block used for postoperative analgesia in an infant having bilateral thoracotomy 总被引:3,自引:0,他引:3
We describe the successful postoperative pain management in an 11-month-old infant who underwent bilateral thoracotomy, using continuous infusions of bupivacaine into two directly placed paravertebral catheters. Haemodynamic parameters and pain scores were measured 1–2 h for 60 h while the infusions were continued and, intermittently, blood samples were taken for subsequent measurement of serum bupivacaine concentrations. The technique provided effective pain relief and the infant required no other analgesia postoperatively. There were no adverse haemodynamic consequences or complications relating to either catheter placement or drug infusions. Serum concentrations of bupivacaine remained below toxic levels throughout the study period, though accumulation did occur. 相似文献
100.
Success of meniscal repair with early or immediate motion depends on the ability of the suture fixation to withstand the loads applied. Vertical and horizontal mattress suture techniques were tested using 2-0 Ethibond, and 0-PDS and 1-PDS sutures (Ethicon, Somerville, NJ). Mulberry knot technique was tested with 0-PDS and 1-PDS sutures. Twenty menisci (60 sutures) were tested for each suture material. Sutures were placed 3 to 4 mm from the peripheral edge of the meniscus with double barreled cannulas for vertical and horizontal mattress techniques or a spinal needle for the mulberry knot technique, reproducing clinical techniques of meniscal repair. Mechanical testing of suture fixation was performed to failure at a rate of 10 mm/min on a MTS material testing system (MTS Systems Corp. Minneapolis, MN). Suture pullouts were reported as the load displacement to failure from the inner fragment only, because clinical failure would ensue should a suture pull through the inner fragment of a tear. Vertical mattress technique with 1-PDS suture had significantly greater load to failure than any other combination (P < .05). Analysis of variance showed that the vertical mattress technique had statistically superior pullout strength (P < .0001) compared with the horizontal mattress and mulberry knot techniques, which were statistically similar. There were significant differences (P < .0001) between suture types, with 1-PDS proving best compared with 0-PDS, which was stronger than 2-0 Ethibond. Selection of suture material had the greatest impact on vertical mattress load to failure and was not important to the strength of the other techniques. 相似文献