33 超音波橫向解像力等於：
(A)一個波束直徑（beam diameter）
(B)半個波束直徑
(C)一個空間脈衝長度（spatial pulse length）
(D)半個空間脈衝長度

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統計： A(107), B(12), C(34), D(13), E(0) #1065027

詳解 (共 2 筆)

#3464078

[解]

Lateralnresolution is equal to beam width innthe scan plane.

Lateralnresolution is the minimum separation between two reflectors at the same depthnsuch that when a beam is scanned across them, two separate echoes are produced.

[補]

 Axialnresolution depends directly on spatial pulse length.

Increasingnthe frequency improves resolution because wavelength is reduced, thus reducingnspatial pulse length.

[出]

SonographicnPrinciples ch3

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#4283115
橫向=側向=1個波束直徑（寬度），單位 ...
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