Introduçao a Tomografia Flashcards

1
Q

Quais as densidades da TC?

A

Agua: 0 unidades
Ar: -1000 unidades

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2
Q

Quais os planos?

A

Axial
Coronal
Sagital

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3
Q

Formas de aplicar contraste?

A

EV, VO, retal

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4
Q

Como reconhecer contraste EV?

A

Olhar estruturas vasculares

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5
Q

Indicaçoes fase sem contraste?

A

Ver sangue, gordura, calcificaçoes

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6
Q

Fase arterial precoce

A

Estudo de vasos arteriais
(O contraste nao chegou ainda nas estruturas parenquimatosas)

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7
Q

Indicaçoes da fase arterial precoce

A

Dissecçao de aorta
Estudo angiografico de carotidas
Aneurisma aorta abdominal
Oclusoes
Trombose arterial

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8
Q

Fase arterial tardia

A

Detecçoes de lesoes hipervasculares
(lesoes que realçam mais que o parenquima adjacente)
+
Detecçao orgaos parenquimatosos

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9
Q

Indicaçoes fase arterial tardia

A

Figado cirrotico com CHC
Distinçao de cortex renal das piramides renais
Carcinoma de celulas renais

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10
Q

Fase portal

A

Detecçao de lesoes hipovasculares
Estudo do parenquima dos diversos orgaos

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11
Q

Indicaçao fase portal

A

Trauma, detecçao de lesoes, metastase, cancer

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12
Q

Fase de equilibrio

A

Detectar lavagem rapida do contraste

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13
Q

Indicaçoes fase de equilibrio

A

Carcinoma hepatocelular

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14
Q

Fase excretora

A

Avaliar sistema coletor (ureter)
Avaliar estruturas fibroticas

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15
Q

Pitfall da fase arterial - baço tigroide

A

Realce esperado esplenico na fase arterial precoce e na tardia

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16
Q

Pitfall da fase arterial - artefato de fluxo com confluencia entre veia cava inferior e veia renal esquerda

A

Isso nao é trombose da veia cava inferior apesar de parecer