2024知到答案 核医学 最新智慧树满分章节测试答案
第一章 单元测试
文章目录
1、单选题：
What is the relationship between 123I and 124I?( )
选项：
A:Element
B:Nuclide
C:Isotope
D:Isomer
答案: 【Isotope】
2、判断题：
A nuclide has the same N , Z and energy state .（ ）
选项：
A:错
B:对
答案: 【对】
3、判断题：
When
Tc m decay into 
Tc, the mass is changed. （ ）
选项：
A:对
B:错
答案: 【错】
4、判断题：
Atomic nuclei are spontaneously affected by external influences ，such as temperature, pressure, electromagnetic fields.( )
选项：
A:错
B:对
答案: 【错】
5、单选题：
Which is true for Gamma decay?( )
选项：
A:99mTc decays into 99Tc is a type of gamma decay.
B:The mass number is not changed.
C:It is a type of electromagnetic radiation.
D:The atomic number is changed.
答案: 【The atomic number is changed.】
第二章 单元测试
1、单选题：
What part of an imaging system emits light when it has absorbed a photon?（ ）
选项：
A:pulse height analyzer
B:photomultiplier tube
C:scintillation crystal
D:Collimator
答案: 【scintillation crystal】
2、单选题：
What happens to image size as the distance between a patient and a parallel hole collimator decreases? （ ）
选项：
A:does not change
B:worsens
C:improves
答案: 【does not change】
3、单选题：
The images acquired as a SPECT camera rotates arounda patient are called: （ ）
选项：
A:arcs
B:projections
C:azimuth stops
D:reconstructions
答案: 【projections】
4、单选题：
Most of the photons emitted from the radiopharmaceutical which has been administered to a patient: （ ）
选项：
A:a and b
B:do not contribute to the final image
C:are received by the sodium iodide crystal
D:b and c
E:are converted to a voltage signal
答案: 【do not contribute to the final image】
5、单选题：
A technologist covers the collimator (which is facing the ceiling) with absorbent paper and obtains a uniformity image using a liquid flood source with added 99mTc.A round cold spot is seen on the image. Subsequently the technologist removes the collimator, turns the camera face down and obtains another image using a point source placed on the floor. This image appears uniform.What is the most likely cause of the cold spot on the first image? （ ）
选项：
A:decoupled photomultiplier tube
B:subtle crystal crack
C:collimator defect
D:improper energy peaking
答案: 【decoupled photomultiplier tube】