So wunim amemene no mu kurukuruwa ketewaa yi ho asɛm? (Circle of Willis) Momma yɛnka eyi ho asɛm!

So woate ‘Willis Kwansin’ ho asɛm pɛn? Ebia wo duruyɛfo aka ho asɛm akyerɛ wo, anaasɛ woahu wɔ aduruyɛ amanneɛbɔ bi mu. Nokwarem no, ɛyɛ yɛn amemene no fã a ɛho hia yiye. Ɛte sɛ ahobammɔ nhyehyɛe ketewaa bi. Enti, momma yɛnka nea saa `(Circle of Willis)` yi yɛ ne nea ɛyɛ ho asɛm tiawa, okay?

Dɛn ne ‘Willis Kwansin’ no?

Okay, enti dɛn ne `(Circle of Willis)`? Sɛ yɛbɛka no tiawa a, ɛyɛ mogya ntini nhyehyɛe bi a ɛwɔ yɛn amemene no ase pɛɛ, wɔ yɛn ase. Wɔayɛ no te sɛ mprɛte, anaasɛ nsɛso a ɛwɔ afã anum (`(Pentagon)`) . Mogya ntini atitiriw abien na ɛma yɛn amemene no nya mogya a oxygen pii wom na ɛho tew. Baako ne `(Internal Carotid Artery)` nhyehyɛe, na biako nso ne `(Vertebral Artery)` nhyehyɛe. Enti saa `(Circle of Willis)` yi ne baabi a mogya ntini atitiriw abien yi ka bom. `(Internal Carotid Artery)` no de mogya kɔ amemene no anim titiriw, na `(Vertebral Artery)` no de mogya kɔ amemene no akyi titiriw.

Wɔfrɛ eyi sɛ ‘Willis mpɛtea’ a wɔde too nipadua ho nimdefo Thomas Willis din. Ɔno na ɔboaa yɛn ma yehuu nneɛma pii faa saa nhyehyɛe yi ho. Wɔde din afoforo nso frɛ no, sɛ nhwɛso no:

• ` (Amemene mu Ntini Kurukuruwa)` (Amemene mu Ntini Kurukuruwa) .
• ` (Willis Nsεmfua Nsεmfua)` (Willis Nsεmfua) .
• ` (Willis a ɛyɛ nhama)` (Willis a ɛyɛ nhama) .

Eyi te sɛ ‘ade a entumi nyɛ yiye’ ma yɛn amemene, ahobammɔ afiri. Fa no sɛ, sɛ mogya ntini atitiriw abien yi mu biako sɛe, sɛ nhwɛso no, esiane mogya ntini a apae wɔ amemene no mu (Brain Aneurysm) anaasɛ ɔyare a ɛma obi hwe ase nti a, ɔkwan foforo no betumi de mogya bi akɔ saa amemene no fã a asɛe no mu denam eyi so (Circle of Willis). So ɛno nyɛ nwonwa?

So obiara (Circle of Willis) de yɛ pɛ? Anaasɛ nsonsonoe wɔ mu?

Nanso ade no ni. Ɛnyɛ obiara na ɔwɔ ``Circle of Willis'' a ɛyɛ pɛ. Sɛnea nhwehwɛmufo kyerɛ no, nnipa dodow no mu nnu fã na wɔwɔ bi a enni dɛm koraa. Ɛno kyerɛ sɛ ebia nsakrae kakraa bi bɛba wɔ nhyehyɛe mu. Sɛ ɛba saa a, yɛfrɛ no ``Incomplete Circle of Willis'' .

Nsakrae abien na ɛtaa ba, titiriw wɔ mogya ntini a wɔfrɛ no Anterior Communicating Artery a ɛwɔ Circle of Willis no anim no mu:

• Fenestration: Eyi betumi aka nnipa dodow a ɛkɔ soro kodu 21%. Fenestration yɛ bere a mogya ntini bi mu paapae yɛ abien, twa kwan tiaa bi, na afei ɛsan ka bom. Ɛte sɛ ɔkwan bi a ɛpaapae abien na afei ɛsan ka bom.
• `(Duplication)` (Nneɛma abien):Eyi ka nnipa bɛyɛ 18%. ``Duplication`` kyerε sε mogya ntini mmienu a εfiri aseɛ tete ne ho no ka bom yɛ mogya ntini baako.

Afei ebia woresusuw ho sɛ, ‘Na sɛ me Circle of Willis nso nwie pɛyɛ nso ɛ?’ Nha wo ho. Sɛ mpo wo Circle of Willis no nwie pɛyɛ a, wubetumi atra ase a ahoɔden wom a ɔhaw biara nni ho. Mpɛn pii no, ɛnka w’amemene no dwumadi kɛse. Nanso, sɛ wunya amemene mu ntini mu yare bi te sɛ akisikuru a, ɛnde saa sintɔ no nkɛntɛnso betumi ayɛ kɛse kakra. Eyi nyɛ biribi a yebetumi ahyɛ da asesa. Ɔkwan a yɛn mogya ntini no fa so hyehyɛ wɔ awotwaa no fã , kyerɛ sɛ, bere a yɛda so ara wɔ awotwaa mu no so na ɛkyerɛ eyi.

Ɔkwan bɛn so na nea enni mũ (Circle of Willis) abu so?

Enti, sɛnea `(Circle of Willis)` a enni mũ yi abu so dɛn? Nokwarem no, nhwehwɛmufo gye di sɛ ɛtaa ba paa. Nanso ɛyɛ den sɛ yɛbɛka sɛnea ɛtaa ba no pɛpɛɛpɛ. Efisɛ, ɛnyɛ obiara na ɔwɔ `(Scan)` sɔhwɛ a ɛfa amemene no ho. `(Scan)` a ɛte saa nkutoo na wobetumi ahu sɛnea saa `(Circle of Willis)` yi te pɛpɛɛpɛ. Sɛnea nhwehwɛmu ahorow kyerɛ no, ebia saa `(Circle of Willis)` yi nwie pɛyɛ wɔ mpanyimfo 50% kosi 90% mu . Ɛno kyerɛ sɛ nnipa dodow no ara wɔ bi a ɛsono emu biara kakra.

Dɛn ankasa ne Willis Kwansin no dwumadi?

Afei momma yɛnka dwuma a saa `(Circle of Willis)` yi di ho asɛm pefee kakra bio. Fa no sɛ ɛyɛ `(Traffic Roundabout)` a akwan pii bom.

Ntini biara a ɛka bom yɛ `(Circle of Willis)` no te sɛ ɔkwan. `(Highway)` atitiriw abien na ɛwɔ hɔ, kyerɛ sɛ, akwan abien a ɛde mogya pii kɔ. Ɛnonom ne `(Internal Carotid Artery)` nhyehyɛe a yɛadi kan aka ho asɛm, ne `(Vertebral Artery)` nhyehyɛe. Akwan nketewa afoforo a ɛwɔ `(Circle of Willis)` no ka bom, na ɛyɛ kwan a ɛyɛ kurukuruwa a ɛka saa akwan akɛse abien no bom na ɛma mogya (i.e. kar akwan) sen.

Mfaso a ɛwɔ eyi so ne sɛ, sɛ ‘ɔkwan a wɔasiw’ anaa ‘akwanhyia’ bi si mpofirim wɔ saa ɔkwan kɛse no so (i.e., mogya ntini kɛse bi a ɛde mogya kɔ amemene no mu) a, ɔkwan kɛse foforo no betumi de mogya bi akɔ amemene no fã a ɛka no no afa saa kwan a ɛyɛ kurukuruwa yi so. Sɛ yɛbɛka no tiawa a, sɛ wowɔ `(Circle of Willis)` a edi mũ a, ɛkyerɛ sɛ ɔkwan foforo bi wɔ hɔ (`(Detour Route)`) a wobetumi de adi dwuma sɛ biribi siw kwan anaa ɔhaw biara ba a.

Sɛ wowɔ `(Circle of Willis)` a edi mũ a, ebetumi abɔ wo ho ban afi tebea horow bi a emu yɛ den ho. Titiriw nyarewa a ɛka mogya ntini a ɛwɔ saa `(Circle of Willis)` yi mu. Nhwɛsoɔ:

• Srade a ɛwɔ mogya ntini mu (Atherosclerosis) .
• Mogya a ɛtɔ kɔ amemene no mu (sɛ nhwɛso no, esiane opira bi nti (Intracranial Hemorrhage)) .
• Carotid Ntini Yare / Carotid Ntini a Ɛyɛ Stenosis
• Mogya ntini a ɛwɔ amemene no mu a ɛyɛ hyew (Central Nervous System Vasculitis) .
• Mogya ntini a apaapae wɔ amemene no mu (Ruptured Brain Aneurysm) .
• Nnwodwoɔ
• Bere tiaa mu Ischemic Attack (TIA) anaasɛ mini-stroke

Nanso, sɛ wowɔ ``Circle of Willis'' a enni mũ a, saa kurukuruwa no ahobammɔ adwuma no nyɛ adwuma yiye. Afei, wɔ nyarewa a ɛfa amemene no mogya ntini te sɛ eyi mu no, asiane a ɛwɔ hɔ sɛ nkɛntɛnso no mu bɛyɛ den no yɛ kɛse kakra, titiriw wɔ akisikuru ho.

Ɛhe na eyi (Circle of Willis) wɔ?

Ebia wobɛpɛ nso sɛ wuhu baabi pɔtee a saa `(Circle of Willis)` yi wɔ. Ɛwɔ `(Base of your Brain)`, wɔ baabi a ɛwɔ amemene no ntini no akyi kakra (`(Subarachnoid Space)`). Ɛwɔ yɛn `(Pituitary Gland)` dua no ho, wɔ `(Hypothalamus)` ase pɛɛ. Afei nso, yɛn ti nhwi ntini dodow bi (`(Cranial Nerves)`) twam bɛn saa `(Circle of Willis)` yi.

Bere bɛn na ɛsɛ sɛ mibisa oduruyɛfo bi eyi ho asɛm (Circle of Willis)?

Afei ebia worebisa wo ho sɛ, 'Bere bɛn na mɛte saa `(Circle of Willis)` yi ho asɛm afi me duruyɛfo hɔ?' Wiɛ, ebetumi aba sɛ nneɛma pii nti na ɛte saa:

• Sɛ wowɔ amemene mu ntini a ɛyɛ den a: Willis Kwansin no yɛ mmeae a ɛtaa ba amemene no mu a ntini a ɛma mogya tu no ba no mu biako. Nhwehwɛmufoɔ ka sɛ bɛyɛ 85% wɔ intracranial aneurysms mu wɔ beaeɛ a mogya no kɔ wɔ Circle of Willis anim.
• Sɛ wowɔ akisikuru a: Akisikuru betumi aba esiane mogya ntini bi a asiw anaa mogya a ɛretu wɔ Circle of Willis no mu nti.
• Sɛ wowɔ Moyamoya Yare a: Eyi yɛ amemene mu yare a ɛntaa nsi koraa. Ɛba bere a mogya ntini a ɛwɔ wo Circle of Willis mu a ɛde mogya kɔ w’amemene no anim no yɛ ketewaa anaasɛ esiw nkakrankakra no.
• Sɛ wowɔ ‘Subclavian Steal Syndrome’ a: Eyi ba bere a wo ‘Subclavian Artery’ (axillary artery) no yɛ teateaa anaasɛ esiw ano no. Afei ‘wia’ mogya a ɛsɛ sɛ ɛnam wo ‘Vertebral Artery’ (mogya ntini titiriw bi a ɛwɔ ‘Circle of Willis’) so kɔ w’amemene mu no bi.
• Sɛ wɔyɛ w’amemene no oprehyɛn a: Bere a wɔreyɛ oprehyɛn wɔ w’amemene no fã yi – sɛ nhwɛso no, sɛ wɔde bɛsa ntini a ɛyɛ mmerɛw anaa ɔhaw bi a ɛwɔ wo pituitary gland no ho a – asiane ketewaa bi wɔ hɔ sɛ wobɛsɛe wo Circle of Willis ne afã horow a ɛho hia a atwa ho ahyia no. Sɛ Circle of Willis no ankasa sɛe a, ebetumi ama mogya a ɛkɔ amemene no mu no asiw (Brain Ischemia) anaasɛ mogya a ɛkɔ amemene no mu no ayera koraa (Infarction).
• Sɛ woyɛ amemene mu nhwehwɛmu a:Sɛ woyɛ amemene mu nhwehwɛmu, te sɛ amemene mu ntini mu nhwehwɛmu anaa amemene mu MRI (Magnetic Resonance Imaging) a, ebia w’amanneɛbɔ no bɛka Willis Kwansin no ne ne nhyehyɛe ho nsɛm ho.

Sɛ wɔsiw (Circle of Willis) no kwan a, dɛn na ɛba?

Susuw nea ɛbɛba sɛ biribi siw kwan wɔ baabiara wɔ saa `(Circle of Willis)` yi mu. Ɛda adi kɛse sɛ, sɛ ɛba saa a, `(Stroke)` betumi aba. Nanso, sɛnea madi kan aka no, sɛ wowɔ `(Circle of Willis)` a edi mũ a, ebetumi abɔ wo ho ban akodu baabi afi ɔyare a ɛma obi hwe ase ho sɛnkyerɛnne a emu yɛ den no ho.

Dɛn ne ‘Circle of Willis Syndrome’?

Nnuruyɛfo ne nnuruyɛ mu nsɛm bi nso frɛ `(Moyamoya Yare)` a yɛadi kan aka ho asɛm no sɛ `(Circle of Willis Syndrome)`. Edin foforo a wɔde frɛ `(Moyamoya Yare)` ne `(Spontaneous Occlusion of the Circle of Willis)`.

Dɛn na yebetumi ayɛ na ama eyi (Circle of Willis) akɔ so anya apɔwmuden?

Enti, dɛn na yebetumi ayɛ na ama saa ``Circle of Willis'' a ɛho hia yi ne mogya ntini afoforo a ɛwɔ amemene no mu no ayɛ yiye? Ade a ɛho hia sen biara ne sɛ wubedi asiane ahorow a ɛbɛma woanya amemene mu ntini mu yare no so sɛ wowɔ bi a. Saa nneɛma a ɛde asiane ba yi ne:

• Mogya Nhyɛso a Ɛkɔ Anim
• Cholesterol a Ɛdɔɔso
• Asikreyare `(Asikreyare)`
• Koma Yare
• Adwennwen a Enni Sabea
• Obolo
• Sigaretnom / Nicotine a Wɔde Di Dwuma Ho Ɔhaw
• Nsa a Wɔde Di Dwuma Ho Ɔhaw

Ɛho hia yiye sɛ wo ne wo duruyɛfo kasa fa akwan a wobɛfa so adi tebea horow yi ho dwuma ho.

Momma yɛnkae (Take-Home Message) .

Okay, enti dɛn ne nneɛma atitiriw a yɛde fi nea yɛkaa ho asɛm nnɛ no mu?

``Circle of Willis`` yɛ mogya ntini nhyehyɛe a ɛyɛ nwonwa a ɛwɔ yɛn amemene no ase a ɛde mogya kɔ amemene no mu. Ɛte sɛ ahobammɔ afiri.

>

Ɛnyɛ obiara na ɔwɔ eyi a edi mũ, na ɛno yɛ ade a ɛfata. Sɛ enni mũ a, biribiara nni hɔ a ɛsɛ sɛ wohaw wo ho dodo, nanso wɔ amemene mu nyarewa bi mu no, asiane no betumi ayɛ kɛse kakra.

>

Nea ɛho hia sen biara ne sɛ yɛbɛtra ase wɔ ɔkwan bi so a ɛbɛma yɛn amemene mu mogya ntini ayɛ yiye na asiw nyarewa te sɛ akisikuru ano. Ɛno kyerɛ sɛ wubenya suban pa na woadi asiane ahorow a yɛadi kan aka ho asɛm no so.

Ebia nnipa pii nte wɔn `(Circle of Willis)` ho asɛm mpo da. Nanso, sɛ wowɔ amemene mu yare bi, te sɛ `(Aneurysm),` a ebia oduruyɛfo bi aka ho asɛm.Sɛ wo duruyɛfo ka aduruyɛ mu asɛmfua bi a wonte ase da a, nsuro da sɛ wubebisa nkyerɛkyerɛmu. Wowɔ hokwan biara sɛ wuhu nea ɛrekɔ so wɔ wo nipadua mu.

` Ring of Willis, amemene mu mogya a ɛkɔ nipadua no mu, ɔyare a ɛma obi hwe ase, amemene mu ntini ring, mogya ntini a ɛwɔ amemene no mu, amemene no akwahosan, ntini a ɛma mogya tu