Snimanje mozga magnetskom rezonancom i neuropsihologijsko testiranje u jednojajčanih blizanaca nesukladnih na shizofreniju

Magnetic resonance imaging (MRI) scanning of the brain, soft neurologic signs, and personality and neuropsychologic assessment were used in a pair of monozygotic twins aged 25, discordant for schizophrenia. Brain MRI showed diffuse cortical atrophy of frontal, parietal and temporal brain lobes in both twins. Coronal plane MRI revealed decreased amygdala and hippocampus, and enlarged third and fourth lateral ventricles in the affected twin.Snimanje mozga magnetskom rezonancom (MR), nedefinirani (soft) neurološki znaci, neuropsihologijsko i psihologijsko testiranje osobnosti primijenjeni su na jednom paru jednojajčanih blizanaca starih 25 godina, od kojih jedan boluje od shizofrenije. MR mozga je u oba blizanca pokazao difuznu kortikalnu atrofiju frontalnih, parijetalnih i temporalnih režnjeva. MR u koronalnom presjeku pokazao je smanjene amigdale i hipokampus u bolesnog blizanca. U bolesnog je blizanca nađeno i proširenje trećega i lateralnih ventrikla

Magnetska rezonanca mozga i magnetska angiografija u zbrinjavanju bolesnika s ishemijskim moždanim udarom u vertebrobazilarnoj cirkulaciji

Vertebrobasilar occlusion is a life-threatening event that requires prompt diagnostic evaluation and subsequent therapy. Advanced magnetic resonance imaging (MRI) methods, including diffusion-weighted imaging and magnetic resonance angiography (MRA), are highly sensitive for the detection of ischemic tissue injury, and for the detection and localization of intracranial arterial occlusion and stenosis. In the era of thrombolytic therapy, MRI and MRA provide useful information for therapeutic decision making in the early stage of stroke evaluation. This retrospective review included patients with posterior circulation symptomatology examined at our Department between July 2002 and January 2005, 8 female and 11 male, mean age 54.9 years. The aim was to present the possibilities of MRI and MRA in the management of patients with ischemic stroke in posterior circulation. In 19 patients with an ischemia in the vertebrobasilar circulation detected by MRI of the brain, MRA identified 8 cases of basilar artery occlusion, 4 cases of basilar artery stenosis, 3 cases of multiple atherosclerotic stenoses of the vertebral arteries with 2 cases of concurrent vertebral artery occlusion, 2 cases of vasculitis in the posterior circulation, 1 case of proximal posterior cerebral artery occlusion, and 1 case of posterior cerebral artery stenosis. In 8 patients with basilar artery occlusion, the site of occlusion was proximal in 3 cases, proximal and middle in 2 cases, middle and distal in 2 cases, and distal in 1 case. MRI is a powerful tool to detect ischemic changes in stroke immediately upon stroke onset, while MRA is highly sensitive for the detection of occlusive disease in large intracranial arteries as well as in posterior circulation. In the acute stroke setting, MRI and MRA are useful for: 1) early and reliable identification of ischemic stroke; 2) improved choice of treatment modality by helping exclude from thrombolysis patients at high risk of hemorrhage and by identifying those patients most likely to benefit from it; 3) pinpoint the vascular origin of ischemic stroke; 4) determination of neurologic consequences of stroke, including final infarct size, clinical outcome and hemorrhagic risk.Vertebrobazilarna okluzija je za život opasno stanje koje zahtijeva brzu dijagnostičku obradu i terapiju. Suvremene metode magnetske rezonance (MR) mozga, uključujući difuzijski mjerenu sliku i magnetsku angiografiju (MRA), imaju visoku osjetljivost u otkrivanju ishemijske lezije moždanog parenhima, te u otkrivanju i lokalizaciji okluzije i stenoze intrakranijskih arterija. U doba trombolitične terapije MR mozga i MRA daju korisne podatke bitne za donošenje odluke o izboru terapije u procjeni ranog stadija ishemijskog moždanog udara. Proveden je retrospektivni pregled bolesnika sa simptomatologijom stražnje cirkulacije koji su na našem Zavodu pregledani u razdoblju od srpnja 2002. do siječnja 2005. godine, 8 žena i 11 muškaraca srednje životne dobi od 54,9 godina. Cilj je bio pokazati mogućnosti MR mozga i MRA u zbrinjavanju bolesnika s ishemijskim moždanim udarom stražnje cirkulacije. U 19 bolesnika s ishemijskim moždanim udarom vertebrobazilarnog sliva, koji je dokazan pomoću MR mozga, MRA je otkrila 8 okluzija bazilarne arterije, 4 stenoze bazilarne arterije, 3 slučaja višestrukih aterosklerotskih stenoza vertebralnih arterija s 2 slučaja istodobne okluzije vertebralne arterije, 2 vaskulitisa u stražnjoj cirkulaciji, 1 okluziju proksimalnog dijela i 1 stenozu stražnje moždane arterije. Među 8 bolesnika s okluzijom bazilarne arterije mjesto okluzije bilo je proksimalni dio arterije u 3, proksimalni i srednji dio u 2, srednji i distalni dio u 2 slučaja i distalni dio bazilarne arterije u 1 slučaju. MR mozga je moćno sredstvo u otkrivanju ishemijskih promjena neposredno nakon nastupa moždanog udara, dok MRA ima visoku osjetljivost za otkrivanje okluzivne bolesti velikih intrakranijskih arterija. Kod zbrinjavanja akutnog moždanog udara MR mozga i MRA su korisne zbog: 1) brzog i sigurnog otkrivanja ishemije; 2) sigurnijeg izbora oblika terapije pomažući da se tromboliza ne primijeni kod bolesnika s visokim rizikom za razvoj krvarenja te da se otkriju bolesnici koji će imati najviše koristi od iste; 3) mogućnosti točnog određivanja vaskularnog podrijetla ishemijskog moždanog udara; 4) određivanja neuroloških posljedica moždanog udara uključujući konačnu veličinu ishemijske lezije, klinički ishod i rizik od krvarenja

Procjena cerebrovaskularne bolesti magnetskom rezonancijom mozga i magnetskom angiografijom

Magnetic resonance imaging (MRI) is an important imaging technique for evaluation of cerebral ischemic changes. Using magnetic resonance angiography (MRA), both large and medium sized intracranial arteries and veins can be visualized by selecting appropriate imaging parameters. The aim of this retrospective study was to evaluate our own results in the diagnosis of cerebrovascular diseases with MRI and MRA, and to compare them with literature data. Data on 278 patients with cerebrovascular symptomatology (158 female and 120 male, mean age 45-54 years), examined between April 2001 and November 2002, were analyzed. MRA was performed in all 278 and both MRA and MRI in 231 patients. On MRA, 90 pathologic alterations of intracranial arteries (69 aneurysms and 21 vascular malformations), 13Rintracranial arterial occlusions, 19 intracranial arterial stenoses, and 14 cases of intracranial arteriosclerotic changes were identified. On MRI, 114 strokes (73 brain infarctions, 22 cerebral hemorrhages and 19 sub-arachnoid hemorrhages), 14 vascular malformations and 14 cases of small vessel disease were detected. MRI was found to be a powerful tool to detect ischemic lesions immediately upon stroke onset. MRA is highly sensitive for the detection of occlusive disease in large intracranial arteries. For cerebral venous and sinus thrombosis, MRI and MRA are first line studies. MRA of extracranial and intracranial vessels alone or in combination with transcranial color-coded duplex sonography (TCCD) as well as computed tomography angiography (CTA) may eliminate the need of intra-arterial digital subtraction angiography (DSA) in most patients studied for occlusive cerebrovascular disease. DSA may be reserved for those patients in whom there is a disagreement among the results obtained by use of noninvasive techniques, and for the diagnosis of arteriovenous malformations, whereas MRA can prove useful on follow-up examinations.Magnetska rezonancija (MR) mozga je važna tehnika prikazivanja u procjeni ishemijskih promjena moždanoga parenhima. Magnetskom angiografijom (MRA) se birajući odgovarajuće parametre prikaza mogu pokazati i velike i male intrakranijske arterije i vene. Cilj ove retrospektivne studije bila je procjena vlastitih rezultata u dijagnostici cerebrovaskularnih bolesti pomoću MR mozga i MRA, te njihova usporedba s literaturnim podacima. Analizirani su podaci 278 bolesnika (158 žena i 120 muškaraca srednje životne dobi od 45,54 godine), koji su bili pregledani u razdoblju od travnja 2001. do studenoga 2002. Učinjeno je 278 postupaka MRA, a u 231 bolesnika učinjena je i MR mozga. MRA je otkrila 88 patološki promijenjenih intrakranijskih krvnih žila (69 aneurizma i 21 vaskularnu malformaciju), 13 okluzija intrakranijskih arterija, 19 stenoza intrakranijskih arterija, te 14 slučajeva arteriosklerotskih promjena intrakranijskih arterija. MR mozga otkrila je 114 cerebrovaskularnih inzulta (73 cerebralne ishemije, 22 intracerebralne hemoragije i 19 subarahnoidnih hemoragija), 14 vaskularnih malformacija, te 14 slučajeva "patologije malih krvnih žila". MR mozga je moćno sredstvo u otkrivanju ishemijskih promjena neposredno nakon nastupa moždanog inzulta. RMRA ima visoku osjetljivost za otkrivanje okluzivne bolesti velikih intrakranijskih arterija. MR mozga i MRA su osnovne pretrage za dijagnozu tromboze moždanih vena i sinusa. Samo se pomoću MRA ekstrakranijskih i intrakranijskih krvnih žila ili u kombinaciji s obojenom dupleks sonografijom krvnih žila glave i vrata (TCCD) te kompjutoriziranom tomografijskom angiografijom (CTA) može isključiti potreba za intraarterijskom digitalnom subtrakcijskom angiografijom (DSA) u većine bolesnika pregledanih zbog okluzivne cerebrovaskularne bolesti. DSA može biti rezervirana za one bolesnike kod kojih postoji neslaganje između nalaza neinvazivnih metoda pregleda, te za dijagnozu arteriovenskih malformacija, dok se MRA može rabiti za daljnje praćenje

[Der Einfluss der Blasinstrumente auf das Dentoalveolare gebiert]

Ortodontski efekti duhačkih inctrumenata relativno malo su istraživani, posebno od naših autora. U prikazanom radu vrednovali smo djelovanje instrumenata te vrsti u 50 ispitanika. Analizirani i korelirani su relevantni faktori, kao što su vrst instrumenta, dužina sviranja, dob i ortodontski nalaz. Na temelju dobivenih rezultata izvedeni su zaključci.Orthodontic effects of wind instruments have been paid little attention so far as a field of research, especially by our authors. In this paper the authors have evaluated the effects of such musical instruments in 50 cases. They have analysed and correlated the relevant factors: type of instrument, the stretch of time it has been played upon, the age of the patient, and the orthodontic finding. The results they obtained were the basis for some conclusions.Die orthodontischen Auswirkungen der Blasinstrumente sind relativ wenig untersucht, insbesondere von unseren Autoren. In dieser Arbeit wurde die Wirkung dieser Instrumente an 50 Probanden gewertet. Es wurden die relevanten Faktoren, wie die Art der Instrumente, die Dauer des Blasens, das A lter und die orthodontischen Befunde analysiert und koreliert. Aufgrund der erhaltenen Resultate wurden Schlüsse gezogen

Panhipopituitarizam u 45-godišnje bolesnice: prikaz slučaja

A case of a 45-year-old woman with untreated panhypopituitarism is presented. Hypopituitarism is a rare disorder consisting of multiple deficiencies of hormones originating from the adenohypophysis. It is divided into primary and secondary. Primary disorders manifest at the pituitary level, whereas secondary hypopituitarism implies hypothalamic affection. Partial or total loss of all pituitary hormones is called panhypopituitarism. Hypopituitarism can be slow and insidious or severe and life-threatening. The expression of symptoms largely depends on the patient\u27s age and the hormones involved. The leading symptom is growth retardation when the disorder develops in childhood or puberty. Sometimes years may elapse without accurate diagnosis, as in the case described. To date, only a few cases of untreated hypopituitarism have been published. In our patient, clinical examination revealed short stature and weak osteomuscular constitution, primary amenorrhea and lack of development of secondary sex characteristics. The patient\u27s clinical history revealed signs of hypopituitarism from childhood, which had been untreated until she presented to our clinic. The results of complete testing showed the lack of all pituitary hormones and antidiuretic hormone, which was consistent with panhypopituitarism, including central diabetes insipidus.Prikazuje se slučaj 45-godišnje bolesnice s neliječenim panhipopituitarizmom. Hipopituitarizam je rijedak poremećaj koji obilježava manjak više hormona prednjega režnja hipofize. Može biti primaran ili sekundaran. Primarni poremećaji nastaju na razini hipofize, dok su sekundarni na razini hipotalamusa. Djelomičan ili potpun manjak svih hormona hipofize naziva se panhipopituitarizam. Tijek hipopituitarizma može biti spor i podmukao ili nagao i životno ugrožavajući. Izražajnost simptoma ovisi prvenstveno o dobi bolesnika te zahvaćenim hormonima. Vodeći simptom je zaostajanje u rastu, kada bolest zahvati bolesnika u djetinjstvu ili pubertetu. Ponekad može proći niz godina bez potpune dijagnoze, kao što je opisano i u naše bolesnice. Do danas je objavljeno svega nekoliko slučajeva neliječenog hipopituitarizma. Kliničkim pregledom naše bolesnice nađen je nizak rast i slaba osteomuskularna građa, primarna amenoreja i nerazvijene sekundarne spolne značajke. Anamnestički podaci otkrivaju sliku hipopituitarizma od dječje dobi, ali bolesnica nije liječena do dolaska u našu kliniku. Rezultati sveobuhvatne obrade pokazali su manjak svih hormona hipofize i antidiuretičnog hormona, što govori u prilog panhipopituitarizma, uključujući i centralni dijabetes insipidus

Vrijednost CT-a mozga u hitnoj službi: retrospektivna analiza

The objective of the study was evaluation and radiologic - clinical correlation of brain computed tomography (CT) scans performed at emergency service. The relation between the number of urgent and total CT scans performed during a 2-year period (January 1, 2001 - December 31, 2002) was analyzed. Emergency brain CT scans were especially investigated according to clinical indications, requests from particular clinical specialties, and need of anesthesiologist\u27s assistance. CT scans were correlated with clinical examinations and diagnoses as well as with literature data. During the study period, 15,933 CT scans were performed at our department, 3132 (19.66%) of them at emergency service (1757 male and 1375 female, mean age 56.97 years), and 2576 (82.25%) of the latter emergency brain CT scans (1398 male and 1178 female, mean age 57.80 years). Data analysis showed the following distribution of emergency brain CT scans according to hospital departments: neurology 1441 (55.94%), neurosurgery 632 (24.53%), internal medicine 186 (7.22%), surgery 138 (5.36%), other departments 150 (5.82%), and other institutions 29 (1.13%). Clinical diagnoses for emergency brain CT scanning were as follows: stroke 905 (35.13%), subarachnoid hemorrhage 128 (4.97%), head injury 617 (23.95%), consciousness disorders and convulsions 389 (15.10%), intracranial expansive lesions 234 (9.08%), headache and/or vertigo 141 (5.47%), cerebrovascular insufficiency 50 (1.94%), infectious disease 46 (1.79%), hydrocephalus 12 (0.47%), metabolic disorders 2 (0.08%), and lost or unavailable data at the time of the study 52 (2.02%). Anesthesiologist\u27s assistance during emergency brain CT scanning was needed in 234 (9.08%) cases. Correlation of CT findings with clinical diagnosis yielded the following results: 96 (3.73%) lost or unavailable data at the time of the study, 639 (25.77%) normal findings, and 1841 (74.23%) pathologic findings. Study results showed the number of emergency brain CT scans to be quite high with a tendency of continuous growth (cerebrovascular disorders, new therapeutic approaches, head injury). Difficulties encountered on brain CT scanning because of the patient\u27s state, and delicacy of the emergency interpretation of CT scans impose the need of higher availability of a neuroradiologist within the frame of the emergency state algorithm.Cilj ove studije bila je evaluacija i radiološko-klinička korelacija CT pretraga mozga u hitnoj službi. Tijekom dvogodišnjeg razdoblja (1. siječnja 2001. - 31. prosinca 2002.) analiziran je odnos hitnih i sveukupnih CT pretraga. Posebno su obrađeni hitni CT pregledi mozga prema kliničkim indikacijama, zastupljenosti pojedinih kliničkih struka i potrebi anesteziološke asistencije. CT nalazi su korelirani s kliničkim upitima i dijagnozama, te uspoređeni s literaturnim podacima. Tijekom 24 mjeseca na Kliničkom zavodu su izvedene 15.933 CT pretrage, od čega 3132 (19,66%) u hitnoj službi (1757 muškaraca i 1375 žena srednje dobi od 56,97 godina). Čak 2576 (82,25%) svih hitnih CT pretraga bile su hitne CT pretrage mozga (1398 muškaraca i 1178 žena srednje dobi od 57,80 godina). Raspoređenost hitnih CT pretraga mozga prema klinikama bila je slijedeća: neurologija 1441 (55,94%), neurokirurgija 632 (24,53%), interna medicina 186 (7,22%), kirurgija 138 (5,36%), ostale klinike 150 (5,82%) i vanjske ustanove 29 (1,13%). Kliničke indikacije za hitnu CT pretragu mozga bile su slijedeće: moždani udar 905 (35,13%), subarahnoidno krvarenje 128 (4,97%), trauma glave 617 (23,95%), poremećaj svijesti i konvulzije 389 (15,10%), intrakranijska ekspanzija 234 (9,08%), glavobolja i/ili vrtoglavica 141 (5,47%), cerebrovaskularna insuficijencija 50 (1,94%), infekcija 46 (1,79%), hidrocefalus 12 (0,47%), metabolične promjene 2 (0,08%) i nedostupni podaci u vrijeme studije 52 (2,02%). Anesteziološka asistencija pri hitnom CT pregledu mozga bila je potrebna u 234 (9,08%) slučaja. Korelacija CT nalaza s kliničkom dijagnozom (kliničkim upitom) pokazala je kako je 96 (3,73%) podataka bilo nedostupno u vrijeme studije, dok je od 2480 preostalih nalaza hitnih CT pregleda mozga bilo 639 (25,77%) normalnih i 1841 (74,23%) patoloških. Provedena je i usporedba s podacima iz literature. Zaključeno je kako je velik broj hitnih CT pretraga mozga s tendencijom stalnog porasta (cerebrovaskularne bolesti, novi terapijski pristupi, trauma glave). Otežano izvođenje pretrage zbog teškog stanja bolesnika i osjetljivost hitne interpretacije nalaza nameću potrebu veće dostupnosti neuroradiologa uz pridržavanje algoritma pretraga u hitnim stanjima

Vrijednost CT-a mozga u hitnoj službi: retrospektivna analiza

The objective of the study was evaluation and radiologic - clinical correlation of brain computed tomography (CT) scans performed at emergency service. The relation between the number of urgent and total CT scans performed during a 2-year period (January 1, 2001 - December 31, 2002) was analyzed. Emergency brain CT scans were especially investigated according to clinical indications, requests from particular clinical specialties, and need of anesthesiologist\u27s assistance. CT scans were correlated with clinical examinations and diagnoses as well as with literature data. During the study period, 15,933 CT scans were performed at our department, 3132 (19.66%) of them at emergency service (1757 male and 1375 female, mean age 56.97 years), and 2576 (82.25%) of the latter emergency brain CT scans (1398 male and 1178 female, mean age 57.80 years). Data analysis showed the following distribution of emergency brain CT scans according to hospital departments: neurology 1441 (55.94%), neurosurgery 632 (24.53%), internal medicine 186 (7.22%), surgery 138 (5.36%), other departments 150 (5.82%), and other institutions 29 (1.13%). Clinical diagnoses for emergency brain CT scanning were as follows: stroke 905 (35.13%), subarachnoid hemorrhage 128 (4.97%), head injury 617 (23.95%), consciousness disorders and convulsions 389 (15.10%), intracranial expansive lesions 234 (9.08%), headache and/or vertigo 141 (5.47%), cerebrovascular insufficiency 50 (1.94%), infectious disease 46 (1.79%), hydrocephalus 12 (0.47%), metabolic disorders 2 (0.08%), and lost or unavailable data at the time of the study 52 (2.02%). Anesthesiologist\u27s assistance during emergency brain CT scanning was needed in 234 (9.08%) cases. Correlation of CT findings with clinical diagnosis yielded the following results: 96 (3.73%) lost or unavailable data at the time of the study, 639 (25.77%) normal findings, and 1841 (74.23%) pathologic findings. Study results showed the number of emergency brain CT scans to be quite high with a tendency of continuous growth (cerebrovascular disorders, new therapeutic approaches, head injury). Difficulties encountered on brain CT scanning because of the patient\u27s state, and delicacy of the emergency interpretation of CT scans impose the need of higher availability of a neuroradiologist within the frame of the emergency state algorithm.Cilj ove studije bila je evaluacija i radiološko-klinička korelacija CT pretraga mozga u hitnoj službi. Tijekom dvogodišnjeg razdoblja (1. siječnja 2001. - 31. prosinca 2002.) analiziran je odnos hitnih i sveukupnih CT pretraga. Posebno su obrađeni hitni CT pregledi mozga prema kliničkim indikacijama, zastupljenosti pojedinih kliničkih struka i potrebi anesteziološke asistencije. CT nalazi su korelirani s kliničkim upitima i dijagnozama, te uspoređeni s literaturnim podacima. Tijekom 24 mjeseca na Kliničkom zavodu su izvedene 15.933 CT pretrage, od čega 3132 (19,66%) u hitnoj službi (1757 muškaraca i 1375 žena srednje dobi od 56,97 godina). Čak 2576 (82,25%) svih hitnih CT pretraga bile su hitne CT pretrage mozga (1398 muškaraca i 1178 žena srednje dobi od 57,80 godina). Raspoređenost hitnih CT pretraga mozga prema klinikama bila je slijedeća: neurologija 1441 (55,94%), neurokirurgija 632 (24,53%), interna medicina 186 (7,22%), kirurgija 138 (5,36%), ostale klinike 150 (5,82%) i vanjske ustanove 29 (1,13%). Kliničke indikacije za hitnu CT pretragu mozga bile su slijedeće: moždani udar 905 (35,13%), subarahnoidno krvarenje 128 (4,97%), trauma glave 617 (23,95%), poremećaj svijesti i konvulzije 389 (15,10%), intrakranijska ekspanzija 234 (9,08%), glavobolja i/ili vrtoglavica 141 (5,47%), cerebrovaskularna insuficijencija 50 (1,94%), infekcija 46 (1,79%), hidrocefalus 12 (0,47%), metabolične promjene 2 (0,08%) i nedostupni podaci u vrijeme studije 52 (2,02%). Anesteziološka asistencija pri hitnom CT pregledu mozga bila je potrebna u 234 (9,08%) slučaja. Korelacija CT nalaza s kliničkom dijagnozom (kliničkim upitom) pokazala je kako je 96 (3,73%) podataka bilo nedostupno u vrijeme studije, dok je od 2480 preostalih nalaza hitnih CT pregleda mozga bilo 639 (25,77%) normalnih i 1841 (74,23%) patoloških. Provedena je i usporedba s podacima iz literature. Zaključeno je kako je velik broj hitnih CT pretraga mozga s tendencijom stalnog porasta (cerebrovaskularne bolesti, novi terapijski pristupi, trauma glave). Otežano izvođenje pretrage zbog teškog stanja bolesnika i osjetljivost hitne interpretacije nalaza nameću potrebu veće dostupnosti neuroradiologa uz pridržavanje algoritma pretraga u hitnim stanjima

Magnetska rezonanca mozga i magnetska angiografija u zbrinjavanju bolesnika s ishemijskim moždanim udarom u vertebrobazilarnoj cirkulaciji

Vertebrobasilar occlusion is a life-threatening event that requires prompt diagnostic evaluation and subsequent therapy. Advanced magnetic resonance imaging (MRI) methods, including diffusion-weighted imaging and magnetic resonance angiography (MRA), are highly sensitive for the detection of ischemic tissue injury, and for the detection and localization of intracranial arterial occlusion and stenosis. In the era of thrombolytic therapy, MRI and MRA provide useful information for therapeutic decision making in the early stage of stroke evaluation. This retrospective review included patients with posterior circulation symptomatology examined at our Department between July 2002 and January 2005, 8 female and 11 male, mean age 54.9 years. The aim was to present the possibilities of MRI and MRA in the management of patients with ischemic stroke in posterior circulation. In 19 patients with an ischemia in the vertebrobasilar circulation detected by MRI of the brain, MRA identified 8 cases of basilar artery occlusion, 4 cases of basilar artery stenosis, 3 cases of multiple atherosclerotic stenoses of the vertebral arteries with 2 cases of concurrent vertebral artery occlusion, 2 cases of vasculitis in the posterior circulation, 1 case of proximal posterior cerebral artery occlusion, and 1 case of posterior cerebral artery stenosis. In 8 patients with basilar artery occlusion, the site of occlusion was proximal in 3 cases, proximal and middle in 2 cases, middle and distal in 2 cases, and distal in 1 case. MRI is a powerful tool to detect ischemic changes in stroke immediately upon stroke onset, while MRA is highly sensitive for the detection of occlusive disease in large intracranial arteries as well as in posterior circulation. In the acute stroke setting, MRI and MRA are useful for: 1) early and reliable identification of ischemic stroke; 2) improved choice of treatment modality by helping exclude from thrombolysis patients at high risk of hemorrhage and by identifying those patients most likely to benefit from it; 3) pinpoint the vascular origin of ischemic stroke; 4) determination of neurologic consequences of stroke, including final infarct size, clinical outcome and hemorrhagic risk.Vertebrobazilarna okluzija je za život opasno stanje koje zahtijeva brzu dijagnostičku obradu i terapiju. Suvremene metode magnetske rezonance (MR) mozga, uključujući difuzijski mjerenu sliku i magnetsku angiografiju (MRA), imaju visoku osjetljivost u otkrivanju ishemijske lezije moždanog parenhima, te u otkrivanju i lokalizaciji okluzije i stenoze intrakranijskih arterija. U doba trombolitične terapije MR mozga i MRA daju korisne podatke bitne za donošenje odluke o izboru terapije u procjeni ranog stadija ishemijskog moždanog udara. Proveden je retrospektivni pregled bolesnika sa simptomatologijom stražnje cirkulacije koji su na našem Zavodu pregledani u razdoblju od srpnja 2002. do siječnja 2005. godine, 8 žena i 11 muškaraca srednje životne dobi od 54,9 godina. Cilj je bio pokazati mogućnosti MR mozga i MRA u zbrinjavanju bolesnika s ishemijskim moždanim udarom stražnje cirkulacije. U 19 bolesnika s ishemijskim moždanim udarom vertebrobazilarnog sliva, koji je dokazan pomoću MR mozga, MRA je otkrila 8 okluzija bazilarne arterije, 4 stenoze bazilarne arterije, 3 slučaja višestrukih aterosklerotskih stenoza vertebralnih arterija s 2 slučaja istodobne okluzije vertebralne arterije, 2 vaskulitisa u stražnjoj cirkulaciji, 1 okluziju proksimalnog dijela i 1 stenozu stražnje moždane arterije. Među 8 bolesnika s okluzijom bazilarne arterije mjesto okluzije bilo je proksimalni dio arterije u 3, proksimalni i srednji dio u 2, srednji i distalni dio u 2 slučaja i distalni dio bazilarne arterije u 1 slučaju. MR mozga je moćno sredstvo u otkrivanju ishemijskih promjena neposredno nakon nastupa moždanog udara, dok MRA ima visoku osjetljivost za otkrivanje okluzivne bolesti velikih intrakranijskih arterija. Kod zbrinjavanja akutnog moždanog udara MR mozga i MRA su korisne zbog: 1) brzog i sigurnog otkrivanja ishemije; 2) sigurnijeg izbora oblika terapije pomažući da se tromboliza ne primijeni kod bolesnika s visokim rizikom za razvoj krvarenja te da se otkriju bolesnici koji će imati najviše koristi od iste; 3) mogućnosti točnog određivanja vaskularnog podrijetla ishemijskog moždanog udara; 4) određivanja neuroloških posljedica moždanog udara uključujući konačnu veličinu ishemijske lezije, klinički ishod i rizik od krvarenja