Avtor/Urednik		Šeruga, Tomaž
Naslov		Vrijednost intraoperacijskog ultrazvuka u bolesnika s ekspanzivnim procesom mozga
Tip		monografija
Kraj izdaje		Zagreb
Založnik		Sveučilište u Zagrebu; Medicinski fakultet
Leto izdaje		1997
Obseg		str. 63
Jezik		slo
Abstrakt		Intraoperative real time ultrasound is a simple and cost saving diagnostic imaging method for recognition and differentiation of a normal anatomic brain structures, which are still the best orientation markers from intracranial pathological lesions. Ultrasound image of pathological lesions in some cases differs very little or is very similar to axial computer tomography scan. CAT scans can be sufficiently replaced by US during brain surgery, and provides also immediate control after surgery is done. Pathological lesions provide images that refer to the tissue echogenity. Intracerebral wholes filed with fluid, such as ventricles, arachnoidal cysts and cysts tumors do not reflect ultrasound waves, so they look as dark, hypoechogenic regions. Other pathological lesions in brain mostly reflect sound well, so they look like bright (white) hyperehogenic areas on US scan (oedemas, tumors, haemathomas). Today intraoperative real time US is the only imaging diagnostic method that can be brought into the operating room and used during the surgery. The most important role of intraoperative US is in the detection of small subcortical expansive lesions, that are covered by total normal looking cortical brain tissue. It provides an information that enables the surgeon the extirpate the lesion with minimal damage or trauma to the surrounded normal brain, and enables the shortest and safest way to the deeper laying lesions. Continuous monitoring of the surgery provides possibility to estimate all the changes that take place during intracranial surgery. We can take notice of very subtle changes, such as shifting of brain tissue after opening the dura or after drainage of cysts. We can even see the shifting of the solid part of the tumor after evacuating the cystic part. US guided biopsy provides higher degree of safety for the patient as we can control the whole passage of the biopsy needle to the targeted lesion. (Abstract truncated at 2000 characters.)
Deskriptorji		BRAIN NEOPLASMS INTRAOPERATIVE PERIOD BRAIN ABSCESS HEMATOMA TOMOGRAPHY, X-RAY COMPUTED CEREBRAL ANGIOGRAPHY MAGNETIC RESONANCE IMAGING MENINGIOMA GLIOMA