But the sensitivity low, less than 3cm lesions not easily detected, and more than 3cm is typical hemangioma ct manifestations frequently.

但其敏感性较低，小于3cm的病灶不易检出，而3cm以上的血管瘤ct表现常较典型。

youdao

In terms of the low SNR and contrast, the small and dim targets can not be easily detected in a single IR image, so utilizing a sequence of images is an effective method.

红外图像中的弱小目标因为信噪比和对比度较低，用单帧图像检测很难得到满意的效果，利用多帧图像信息进行检测是有效的手段之一。

youdao

But the symptoms and pathological changes were not obvious in mice injected with specimens from patients, rats and chigger mites, so Rickettsia tsutsugamushi (Rt) could not easily be detected.

但用病人、鼠、螨标本接种小白鼠，鼠的症状和病变不明显，且难以检出恙虫病立克次体。

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Tumours not easily detected using other scanning techniques may now be found.

BBC: Cancer screening could move to Cheltenham from Bristol

Misrepresented or unverified performance is a significant industry problem that does not receive the attention it deserves because it is not easily detected.

FORBES: Freakonomics: The Hidden Side of Managing Money ( September 2, 2005 )

She said lumps that were smaller and deeper which could not be detected by surface checks would be more easily detected using the ultrasound technique.

BBC: Prodding 'sounds out' breast lumps