Imagistica Flashcards

1
Q

Spect

A
Izotop emitator de fotoni trb sa ajunga in circ cardiaca
Radiofsrmaceutice
Taliu 201
Tecnetiu sestamibi
Tetrofosmin

Gamma camera

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2
Q

Gamma camera

A

Colimator(intra fotonii care s paraleli cu camera, restul sunt respinsi)=>fidelitate anatomica

Cristal care oschileaza cand e lovit de protoni si emite un semnal

Fotomulptiplicatorul multiplica semnalul=> img corespunzatoareconcentratie de radiofarmaceutic in circulatie

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3
Q

Spect imagini

A

Planare
Transversal longitudinal si sagital
Codata-cu cat e mai cald cu atat mai mult radiofarmaceutic
Albastru cu cat e mai fara

Vs-elipsoidal mereu e mai galben
Vd semilunar mai albastru ca i mai subtire

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4
Q

Ce pereti are inima

A

Laterali
Anterior
Inferior!

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5
Q

Cand e buna spect

A

Dinamica vasc cardiaca in repaus vs stres

Img dinamica de ischemie in stres(arata teritoriul amenintat)

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6
Q

Care e investigatia esentiala pt a decela teritoriul cardiac la risc

A

Spect

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7
Q

Stres imagistic

A

Teste de efort

Farmaco: dobutamina(inotrop pozitiv=>creste contractie)
Adenozina
Dipiridamol (ambele sunt vd coronariene deci dilata arterele sanatoase, fura de la alea bolnave=>furt corornarian)
Aminofilina e antidot dipiridamol

Injectez radiofarmaceutic, in 30 min fac spect, se inj vasodil si tecnetiu iar=>img stres in inca 30

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8
Q

Taliu 201

A

Prop spontana de redistributie

La stres se fixeaza de testulul normal si cand dispare stresul revine in circ normala

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9
Q

Scor global de ischemie

Bull eye

A
4 sectiuni
Baza 123456
Mijloc7 8 9 10 11 12
Apical13 14 15 16
Apex 17

1,2,7,8,13,14, 17lad
3,4,9,10,15 rca
Restul lcx

Deci primele 2 din toate lad
Urmatoarele 2 (1apical) dr

E buna ca orientez croronarografistul
Daca fuge in plaman ins ca e tricoronarian grav!!
Ventriculografie izotopica

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10
Q

Pet-de aur pt metab

A
Anihilare pozitronica
Pozitron ciocnit de electron tisular 
Emite 2 fotoni la 180 grd
MASOARA CIRCULATIE SI METABOLISM!!!!!!
Fdg pt metabolism
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11
Q

Hibernant

A

Fara irigare cu metabilism

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12
Q

Cicatrice

A

Fara irigare fara metabolism

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13
Q

Limitari spect si pet

A

Iradiere

Nu cuantifica exact ats

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14
Q

Care sunt metodele cele mai bune pt a det viabilitatea miocardului?
Asta e oblig inainte de orice explorare coronarografica

A

Spect
Pet-de aur
Eco stres dobutamina
Rmn

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15
Q

Ct

A

Detectror care inreg radiatii in slice uri prin miscare pat
Multidetector
Spiral scaning se misca deterctorul(tep)

Sincronizata pe ekg
Unit housefield
Eu sunt sub diafragm

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16
Q

Oct

A

Struct chimica

Bagi catater deci e invaziv si scump

17
Q

Angio ct esential

A

Disectii de aorta

18
Q

Cabg ce artere foloseste

A

Mamare interne

19
Q

Rmn

A

Relaxarea protonilor de h 2 dupa ce au fost excitati de un curent de radiofrecventa intr o miscare in 3 timpi

20
Q

Ce e rmn

A

O harta hidrica
Contrast dupa tipul de spin(t1 sau t2)
Magneti ffff puternici
Sunst de ct gadolinium(strech activated rec)-scade miscarea de spin

Precoce si tardiv
Minoca disf endovasc

Se vad si arterele

Amiloidoza
Hemocromatoza

21
Q

Standar de aur pt fct cardiaca

A

Rmn

22
Q

Late enjancent

A

Ttc
Anatomopatologic
Border zone-cea mai aritmogena!!!!!!

23
Q

Standar de aur pt dg de ima

A

Late enhancement

24
Q

Care e singura metoda de evidentiere a edemului miocardic

A

Rmn

In ima avem efem
In imc avem cicatrice(prin late enhancement)

25
Q

Cn pune dg de miocardita

A

Rmn

Edem hiperemie fibroza!!!!!!!

26
Q

Dg amiloidoza

A

Scintigrama cu fisfor

Rmn

27
Q

Plop sound

A

Mixom