Unit 3 Computers In Imaging

Question 1

Hospital Information System (HIS)

Answer 1

The electronic database used in the hospital to store, generate, and retrieve information on patients

Question 2

Electronic Medical Record (EMR)/Electronic Health Record (EHR)

Answer 2

Electronic record of patient’s collection of medical documents
-Images, reports, lab results, nursing notes

Question 3

Patient Portal

Answer 3

Web-based portal connected to the EMR where patients can access their own results

Question 4

Radiology Information System (RIS)

Answer 4

Network of hardware and software that manage imaging services
• Patient scheduling
• Exam tracking
• Reporting
• Billing

Question 5

Health-Level 7

Answer 5

International standards for transfer of clinical and administrative data between healthcare providers, electronic transmission of patients health data

Question 6

Algorithm

Answer 6

Set of computer instructions to carry out a specific task
• Look Up Table
• Histogram Rescaling

Question 7

In DR the algorithm is

Answer 7

selected before the exposure is taken

Question 8

In CR the algorithm is

Answer 8

selected after the exposure is taken but before processing

Question 9

Process

Answer 9

Application of predetermined algorithms that convert the acquired information to the display monitor as a digital image

Question 10

3 basic steps of processing

Answer 10

1. Converts analog signal to a digital signal
2. Corrects for noise or missing data
3. Manipulates the data to display a constant image brightness and contrast

Question 11

Pixel

Answer 11

Picture elements, smallest unit of digital image

Question 12

Matrix

Answer 12

Pixels laid out in rows and columns

Question 13

If matrix INCREASES, pixel __________ and spatial resolution ___________

Answer 13

Decreases, Increases

Question 14

If matrix DECREASES, pixel __________ and spatial resolution ___________

Answer 14

Increases, Decreases

Question 15

Voxel

Answer 15

Volume element (used in CT and MRI)

Question 16

How many pixels in a 512 x 512 matrix?

Answer 16

262,144

Question 17

How many pixels in a 1024 X 1024 matrix?

Answer 17

1,048,576

*better spatial resolution

Question 18

Primary display vs Secondary display

Answer 18

• Primary Display: Used for diagnosis, a radiologists workstation

• Secondary Display:
-Workstation units for technologists
-Secondary viewing stations

Question 19

Medical Image Management and Processing System (MIMPS)

Answer 19

Computer network of hardware and software designed to manage medical images and connects all imaging modalities in a radiology department and manages those digital images within a facility
-Store Images
-Retrieve Images
-Distribute Images

*Also known as PACS

Question 20

Medical Image Management and Processing System (MIMPS) advantages

Answer 20

-No need for storage rooms/buildings
-Reduction in Lost Films
-Reduced image retrieval time
-Unlimited storage capacity
-Images connected to the EMR

Question 21

Teleradiology

Answer 21

The transfer of images/studies and reports to remote sites across the world

Question 22

Digital Imaging and Communications in Medicine (DICOM)

Answer 22

Language used by all medical computers for the consistent transmittal, retrieval, and display of medical images OR network communication standard that allows imaging equipment from different manufacturers to transfer images in a standard format

Question 23

Health Insurance and Portability and Accountability Act (HIPAA)

Answer 23

Defines standards for protection of medical and personal information

Question 24

Digital Imaging workflow chart

Answer 24

Question 25

PACS is the same as

Answer 25

MIMPS