MEDICAL IMAGE DATA

Question 1

It is a set of techniques that noninvasively produce images of the internal aspect of the body

Answer 1

MEDICAL IMAGE

Question 2

It is related to how pretty an image is but how well it conveys anatomical/functional info

Answer 2

IMAGE QUALITY

Question 3

What are the parameters of image quality?

Answer 3

Spatial Resolution
Convolution
Blurring
Contrast Resolution
Accuracy & Precision

Question 4

It relates to how small an object can be seen on a particular imaging system

Answer 4

SPATIAL RESOLUTION

Question 5

Uses mathematical components of image reconstruction

Answer 5

CONVOLUTION

Question 6

Spatial Resolution of an image produced by an optical device

Answer 6

BLURRING

Question 7

Refers to the ability to detect very subtle changes in grayscale

Answer 7

CONTRAST RESOLUTION

Question 8

Difference between accuracy and precision

Answer 8

Accuracy - how one gets close to the truth

Precision - description of the variation, scatter or reproductibility

Question 9

Sources of Image Noise

Answer 9

Grain
Electronic
Structured
Anatomical
Quantum

Question 10

What type of image noise has an increase in the density of reduced silver grains when the radiographic film is exposed and processed?

Answer 10

Grain noise

Question 11

This noise refers to the added electrons in the signal that are not the result of signal detection events

Answer 11

electronic noise

Question 12

In this noise, each channel uses its own amplifier circuits. Therefore groups of detector elements that are read out may have different offset noise

Answer 12

Structured noise

Question 13

It is a pattern on an image generated by patient anatomy that’s always present but not important for diagnosis

Answer 13

Anatomical noise

Question 14

appreciable noise in image results due to low numbers of quanta

Answer 14

quantum noise

Question 15

what is quanta

Answer 15

any number of particles or objects that can be counted

Question 16

It is a representation of the internal structure or function of an anatomic region

Answer 16

Medical Image

Question 17

What forms do medical images take?

Answer 17

Pixels and voxels

Question 18

What are the 2 image data formats?

Answer 18

1. Standardize the images generated by diagnostic modalities

2. Born with the aim to facilitate & strengthen post-processing analysis

Question 19

2 ways on how medical images are stored

Answer 19

1. stored in a single file that contains both metadata and image
2. stores metadata in 1 file and image data in a second one

Question 20

4 kinds of image data formats

Answer 20

Analyze, MINC, Nifti, DICOM

Question 21

What was created in the 1980s and where was it created?

Answer 21

Analyze 7.5, Mayo Clinic, Rochester, MN (Minnesota), USA

Question 22

It is the standard “de facto” for the medical imaging post-processing

Answer 22

Analyze

Question 23

Analyze has been designed for ___________?

Answer 23

multidimensional data

Question 24

What was created at the beginning of the 2000s and who created it?

Answer 24

NIFTI, National Institute of Health

Question 25

What does NIFTI mean?

Answer 25

Neuroimaging Informatics Technology Initiative

Question 26

It creates a format for neuroimaging maintaining the advantages of Analyze but eliminating its weakness

Answer 26

NIFTI

Question 27

What is included in nifti?

Answer 27

support

Question 28

What was developed in 1992 and where?

Answer 28

MINC, Montreal Neurological Institute

Question 29

Purpose of MINC is to?

Answer 29

provide a flexible data format for medical imaging

Question 30

it is the first version based on the standard network common data format

Answer 30

MINC1

Question 31

It is the backbone of every medical imaging department

Answer 31

DICOM

Question 32

When and where was DICOM created?

Answer 32

1993, American College of Radiology

Question 33

Meaning of DICOM

Answer 33

Digital Imaging and Communications in Medicine

Question 34

Radiography was also called?

Answer 34

Roentgenography